Sample records for oracle java se

  1. T-641: Oracle Java SE Critical Patch Update Advisory - June 2011...

    Energy Savers [EERE]

    and password. Oracle CVSS scores assume that a user running a Java applet or Java Web Start application has administrator privileges (typical on Windows). Where the user...

  2. V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute...

    Broader source: Energy.gov (indexed) [DOE]

    Oracle Java. REFERENCE LINKS: SecurityTracker Alert ID: 1028466 Oracle IMPACT ASSESSMENT: Medium DISCUSSION: A remote user can create a specially crafted Java application that,...

  3. U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SDK and JRE 1.4.233 and prior ABSTRACT: A remote user can create a Java applet or Java Web Start application that, when loaded by the target user, will access or modify data or...

  4. Process Creation in JavaProcess Creation in Java Note: Java really doesn't implement processes per se, but

    E-Print Network [OSTI]

    Klassner, Frank

    Process Creation in JavaProcess Creation in Java · Note: Java really doesn't implement processes per se, but provides a clean interface to spawn processes to run system programs outside of the JVM · "Process" class in Java ­ Runtime.getRuntime.exec("") method will return a process object (interface

  5. ORACLE CERTIFICATION Oracle Database

    E-Print Network [OSTI]

    Loudon, Catherine

    ORACLE CERTIFICATION Oracle Database Administration Certificate Program Train with the best. Get your Oracle Database Administration education from the number-one provider* of Oracle training-on, lab-based understanding of Oracle, the world's leading database platform, and long the product

  6. U-105:Oracle Java SE Critical Patch Update Advisory | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfactTuscarora Phase IIDOEArbitrary Code

  7. V-181: Oracle Java SE Critical Patch Update Advisory - June 2013 |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015of 2005UNSDepartmentFebruaryPhase|PotomacDepartment ofConductThereDepartment

  8. V-181: Oracle Java SE Critical Patch Update Advisory - June 2013 |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02 TUE 08:59Capability for2:ofDepartment| Department

  9. T-581: Novell Access Manager Java Double Literal Denial of Service...

    Broader source: Energy.gov (indexed) [DOE]

    Vulnerability Report: Novell Access Manager 3.x Oracle FPUpdater Tool IMPACT ASSESSMENT: Medium Discussion: The Double.parseDouble method in Java Runtime Environment in Oracle...

  10. Company Name: Oracle Web Site: www.oracle.com

    E-Print Network [OSTI]

    New Hampshire, University of

    , current product ownership, current and future technology plans and targeted areas of opportunity To viewCompany Name: Oracle Web Site: www.oracle.com Industry: Technology Brief Company Overview: Oracle company. With more than 370,000 customers including 100 of the Fortune 100 in more than 145 countries

  11. Learning Java

    E-Print Network [OSTI]

    Niemeyer, Patrick

    2005-01-01T23:59:59.000Z

    Version 5.0 of the Java 2 Standard Edition SDK is the most important upgrade since Java first appeared a decade ago. With Java 5.0, you'll not only find substantial changes in the platform, but to the language itself-something that developers of Java took five years to complete. The main goal of Java 5.0 is to make it easier for you to develop safe, powerful code, but none of these improvements makes Java any easier to learn, even if you've programmed with Java for years. And that means our bestselling hands-on tutorial takes on even greater significance. Learning Java is the most widely sou

  12. Oracle and Corporate Citizenship Paul Salinger

    E-Print Network [OSTI]

    Loudon, Catherine

    ­ Eastern Europe Oracle OpenWorld Asia 1 Event China Oracle OpenWorld Latin America 1 Event Brazil Federal practices · Environment Management System as part of ISO 14001 · Oracle U.K. uses 100% renewable power ­ Australia/New Zealand OBI 11g Launch 15 Events ­ Western Europe 1 Event ­ North America Oracle Day 11 Events

  13. V-051: Oracle Solaris Java Multiple Vulnerabilities | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3EDepartment of EnergyThe

  14. V-083: Oracle Java Multiple Vulnerabilities | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3EDepartment of

  15. U-191: Oracle Java Multiple Vulnerabilities | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfactTuscarora PhaseArbitraryDrupalCodeMultiple

  16. Experto Universitario Java Enterprise Lenguaje Java Avanzado

    E-Print Network [OSTI]

    Escolano, Francisco

    -2013 Depto. Ciencia de la Computación e IA #12;Experto Universitario Java Enterprise Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Colecciones - 2 Índice · Introducción · Colecciones Java Enterprise Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Colecciones

  17. V-185: Apache OpenOffice SDK Oracle Java JavaDoc Spoofing Vulnerability |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015of 2005UNSDepartmentFebruaryPhase|PotomacDepartmentRemote AdjacentDepartment of

  18. anakan lagoon java: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Last Page Topic Index 1 Java Java Java Computer Technologies and Information Sciences Websites Summary: Java ...

  19. Oracle accrual plans from requirements to implementation

    SciTech Connect (OSTI)

    Rivera, Christine K [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    Implementing any new business software can be an intimidating prospect and this paper is intended to offer some insight in to how to approach this challenge with some fundamental rules for success. Los Alamos National Laboratory (LANL) had undergone an original ERP implementation of HRMS, Oracle Advanced Benefits, Worker Self Service, Manager Self Service, Project Accounting, Financials and PO, and recently completed a project to implement Oracle Payroll, Time and Labor and Accrual Plans. This paper will describe some of the important lessons that can be applied to any implementation as a whole, and then specifically how this knowledge was applied to the design and deployment of Oracle Accrual Plans for LANL. Finally, detail on the functionality available in Oracle Accrual Plans will be described, as well as the detailed setups.that were utilized at LANL.

  20. Java for High Performance Computing Java HPC Codes

    E-Print Network [OSTI]

    Fraguela, Basilio B.

    Motivation Java for High Performance Computing Java HPC Codes Performance Evaluation Conclusions Java for High Performance Computing: Myth or Reality? Guillermo López Taboada Grupo de Arquitectura de López Taboada Java for HPC: Myth or Reality? #12;Motivation Java for High Performance Computing Java HPC

  1. U-083:Oracle Critical Patch Update Advisory - January 2012 |...

    Broader source: Energy.gov (indexed) [DOE]

    10.2.0.3, 10.2.0.4, 10.2.0.5 Oracle Database 10g Release 1, version 10.1.0.5 Oracle Fusion Middleware 11g Release 1, versions 11.1.1.3.0, 11.1.1.4.0, 11.1.1.5.0 Oracle...

  2. Odyssey Oracle 4-30-2014 Emily Auerbach, Project Director; Oracle Editor

    E-Print Network [OSTI]

    Sheridan, Jennifer

    Sentences 34 Thanks to Jonathan Gramling, Richard Baker, Laurie Greenberg, and Keith Meyer for photography in this issue and to Stanley Sallay '07 for sketches of Malcolm X and Martin Luther King. #12;Odyssey Oracle 4

  3. Oracle-Saguaro 115-kV Transmission Line Routine Maintenance Project...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Oracle-Saguaro 115-kV Transmission Line Routine Maintenance Project, Mile 6 to Oracle Substation Categorical Exclusion Continuation Sheet Project Description Maintenance work at...

  4. Model transformation testing: oracle issue Jean-Marie Mottu1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Model transformation testing: oracle issue Jean-Marie Mottu1 , Benoit Baudry1 , Yves Le Traon2 1.letraon@telecom-bretagne.eu Abstract The definition of an oracle function for model transformation is challenging because of the very complex nature of models resulting from a transformation. Validating the correctness of an output model

  5. Automated Black-Box Testing with Abstract VDM Oracles

    E-Print Network [OSTI]

    as test oracles for concrete software. The automation of the resulting testing frame-work is based of a target system. For that reason, a mapping between abstract and concrete test data is requiredAutomated Black-Box Testing with Abstract VDM Oracles Bernhard K. Aichernig Technical University

  6. import java.io.IOException; import java.net.URI;

    E-Print Network [OSTI]

    Ricci, Laura

    import java.io.IOException; import java.net.URI; import java.util.Enumeration; import net.jxta.discovery.DiscoveryService; import net.jxta.document.AdvertisementFactory; import net.jxta.document.Element; import net.jxta.document.MimeMediaType; import net.jxta.document.StructuredDocument; import net.jxta.document.StructuredDocumentFactory; import

  7. V-095: Oracle Java Flaws Let Remote Users Execute Arbitrary Code |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3EDepartment ofPrivileges | Department of Energy Symantec

  8. V-142: Oracle Java Reflection API Flaw Lets Remote Users Execute Arbitrary

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group current C3EDepartment ofPrivileges |VulnerabilitiesCode | Department of

  9. U-014: Oracle Java Runtime Environment (JRE) Multiple Flaws Let Remote

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfactTuscarora Phase IIDOE O 484.1 6-30-20146AccessUsers

  10. Java Vertexing Tools

    SciTech Connect (OSTI)

    Strube, Jan; /Oregon U.; Graf, Norman; /SLAC

    2006-03-03T23:59:59.000Z

    This document describes the implementation of the topological vertex finding algorithm ZVTOP within the org.lcsim reconstruction and analysis framework. At the present date, Java vertexing tools allow users to perform topological vertexing on tracks that have been obtained from a Fast MC simulation. An implementation that will be able to handle fully reconstructed events is being designed from the ground up for longevity and maintainability.

  11. Ecient Blind and Partially Blind Signatures Without Random Oracles

    E-Print Network [OSTI]

    Ecient Blind and Partially Blind Signatures Without Random Oracles Tatsuaki Okamoto NTT eective in many applications (e.g., blind signatures, group signatures, anonymous credentials etc.) than, this paper presents ecient blind signatures and par- tially blind signatures that are secure in the standard

  12. Efficient Blind and Partially Blind Signatures Without Random Oracles

    E-Print Network [OSTI]

    Efficient Blind and Partially Blind Signatures Without Random Oracles Tatsuaki Okamoto NTT effective in many applications (e.g., blind signatures, group signatures, anonymous credentials etc.) than, this paper presents efficient blind signatures and par­ tially blind signatures that are secure

  13. Automated Requirements Testing with Abstract Oracles Bernhard K. Aichernig

    E-Print Network [OSTI]

    , a mapping between abstract and concrete test data is required. The presented framework focuses on the usage of formal requirements specifications as test ora­ cles for concrete implementations. The approach is based, then the model may serve as a test oracle and specification as well. In Fig­ A A op abstract C C op concrete r r

  14. Mining Test Oracles of Web Search Engines Wujie Zheng1

    E-Print Network [OSTI]

    Xie, Tao

    Mining Test Oracles of Web Search Engines Wujie Zheng1 , Hao Ma2 , Michael R. Lyu1 , Tao Xie3 results could mislead or dissatisfy users. As an example, Figure 1 shows the clarification message put the Web data and the information need of users keep changing, the desired search results may change along

  15. Fully Anonymous Group Signatures without Random Oracles Jens Groth #

    E-Print Network [OSTI]

    signature schemes that avoid the random oracle model. Bellare, Micciancio and Warinschi [BMW03] suggested their scheme is not secure in the BMW/BSZ­models. Boyen and Waters [BW06, BW07] suggest group signatures that are secure against key exposure attacks. Their constructions are secure in a restricted version of the BMW

  16. T-658: Java for Mac OS X 10.6 Update 5 & Java for Mac OS X 10...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    an untrusted Java applet to execute arbitrary code outside the Java sandbox. Visiting a web page containing a maliciously crafted untrusted Java applet may lead to arbitrary code...

  17. An Introduction to JavaScript Godmar Back

    E-Print Network [OSTI]

    Back, Godmar

    An Introduction to JavaScript Godmar Back #12;JavaScript ­ The Basics · Standardized as ECMAScript

  18. U-234: Oracle MySQL User Login Security Bypass Vulnerability

    Broader source: Energy.gov [DOE]

    Oracle MySQL is prone to a security bypass vulnerability Attackers can exploit this issue to bypass certain security restrictions.

  19. Oracle Financials PIA, Bechtel Jacobs Company, LLC | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732onMake YourDepartment ofCDepartmenttheOracle Financials PIA,

  20. Chapter 27 JavaBeans and Bean Events 1. A JavaBeans component is a serializable public class with a default public

    E-Print Network [OSTI]

    Liang, Y. Daniel

    Chapter 27 JavaBeans and Bean Events 1. A JavaBeans component is a serializable public class with a default public constructor. Not every GUI class is a JavaBeans component. For example, java.awt.Color is not a JavaBeans component. Every GUI user interface class is a JavaBeans component. However, a JavaBeans

  1. Object and Reference Immutability using Java Generics

    E-Print Network [OSTI]

    Zibin, Yoav

    2007-03-16T23:59:59.000Z

    A compiler-checked immutability guarantee provides useful documentation, facilitates reasoning, and enables optimizations. This paper presents Immutability Generic Java (IGJ), a novel language extension that expresses ...

  2. 1.1.1.1. **** . JAVA Protected

    E-Print Network [OSTI]

    Joo, Su-Chong

    - 155 - 1.1.1.1. **** , , . . , . , [1,2]. . . JAVA Protected Domain[1,3] , * 2006 Framework) [4,5,6]. DOGF . 1 DOGF . (Distributed Programming

  3. V-120: EMC Smarts Network Configuration Manager Java RMI Access...

    Broader source: Energy.gov (indexed) [DOE]

    0: EMC Smarts Network Configuration Manager Java RMI Access Control Flaw Lets Remote Users Gain Full Control V-120: EMC Smarts Network Configuration Manager Java RMI Access Control...

  4. Adaptive nonparametric estimation in heteroscedastic regression models. Part 1: Sharp non-asymptotic Oracle inequalities

    E-Print Network [OSTI]

    Galtchouk, Leonid

    2008-01-01T23:59:59.000Z

    An adaptive nonparametric estimation procedure is constructed for the estimation problem of heteroscedastic regression when the noise variance depends on the unknown regression. A non-asymptotic upper bound for a quadratic risk (an oracle inequality) is constructed.

  5. Sharp non-asymptotic oracle inequalities for nonparametric heteroscedastic regression models

    E-Print Network [OSTI]

    Galtchouk, Leonid

    2010-01-01T23:59:59.000Z

    An adaptive nonparametric estimation procedure is constructed for heteroscedastic regression when the noise variance depends on the unknown regression. A non-asymptotic upper bound for a quadratic risk (oracle inequality) is obtained

  6. What Oracle doesn`t tell you about CASE: An incremental approach

    SciTech Connect (OSTI)

    Weinstein, A.M.

    1995-04-04T23:59:59.000Z

    Oracle CASE is a very large, complex software tool. The incremental-approach method described here helps developers break the analysis paralysis syndrome by using a group of rules of thumb to build more and better applications faster.

  7. Programmation objet et JAVA 0. Bibliographie

    E-Print Network [OSTI]

    Lombardy, Sylvain

    , Tome 1 : c^ot´e client, 2`eme ´edition , Vuibert, novembre 2002. Notes de cours et transparents d fondamentales, 1999. ­ Volume II - Fonctions avanc´ees, 2000. · Ken Arnold, James Gosling, The Java Programming Berstel · Patrick Niemeyer, Joshua Peck (Traduction de Eric Dumas), Java par la Pratique, O'Reilly

  8. Platform Independence Java Virtual Machine (JVM)

    E-Print Network [OSTI]

    Martin, Jonathan E.

    Utility to generate Web of documents 3 #12; Missing Pieces Efficient Compilers Now 1/30 speed of C++ Just Operating System Services File I/O Network I/O User Interface Multiple Threads Safety Byte Code Verifier Hello.html 11 #12; Java versus C Java is like C in low level syntax ... variables, arrays, expressions

  9. Experto Universitario Java Sesin 1: Spring core

    E-Print Network [OSTI]

    Escolano, Francisco

    Enterprise Spring © 2012-2013 Depto. Ciencia de la Computación e IA Spring core Puntos a tratar 2 #12;Experto Universitario Java Enterprise Spring © 2012-2013 Depto. Ciencia de la Computación e IA;Experto Universitario Java Enterprise Spring © 2012-2013 Depto. Ciencia de la Computación e IA Spring core

  10. Experto Universitario Java Enterprise Servicios Web

    E-Print Network [OSTI]

    Escolano, Francisco

    #12;Experto Universitario Java Enterprise Servicios Web © 2012-2013 Depto. Ciencia de la Computación e Enterprise Servicios Web © 2012-2013 Depto. Ciencia de la Computación e IA Procesos BPEL Sincronos;Experto Universitario Java Enterprise Servicios Web © 2012-2013 Depto. Ciencia de la Computación e IA

  11. Finding Memory Leaks in Java with JDeveloper

    E-Print Network [OSTI]

    Livshits, Ben

    believe, Java's garbage collector does not solve all me- mory problems that might occur in practice feature of memory management in Java is its garbage-collected heap. A typical garbage collector that comes all objects reach- able from a set of roots. These reachable objects survive collections because

  12. POLYCOPIE DE JAVA 1. Introduction

    E-Print Network [OSTI]

    Bouzy, Bruno

    a été conçu par James Gosling en 1994 chez Sun. L'idée était d'avoir un langage de développement simple initialisation d'objets 7. Généralisation et héritage 8. Deux classes usuelles : la classe Object et la classe débutants, écrit par le créateur du langage. Niemeyer & Peck : « JAVA par la pratique », Editions O'Reilly

  13. A review of "Divining the Oracle: Monteverdi’s Seconda Prattica." by Massimo Ossi

    E-Print Network [OSTI]

    Steven Saunders

    2005-01-01T23:59:59.000Z

    study, promising that future lengthier analyses will prove fruitful for histo- rians in this field. Massimo Ossi. Divining the Oracle: Monteverdi?s Seconda Prattica. Chicago: University of Chicago Press, 2003. xviii + 280 pp. $60.00. Review... by STEVEN SAUNDERS, COLBY COLLEGE. The central aim of Divining the Oracle seems modest: to explicate a single 210 SEVENTEENTH-CENTURY NEWS musical term, Claudio Monteverdi?s seconda prattica, yet as Massimo Ossi?s title intimates, penetrating the veil...

  14. The JavaGL 3D Graphics Library & JavaNL Network Library Student: Bing-Yu Chen

    E-Print Network [OSTI]

    Ouhyoung, Ming

    The JavaGL 3D Graphics Library & JavaNL Network Library Student: Bing-Yu Chen Advisor: Ming, Taipei, Taiwan, ROC May 1997 #12;Abstract This thesis presents a three dimensional (3D) graphics library presents a new multiparticipant 3D graphics application interface on Internet. By using the JavaGL and Java

  15. JAVA WEB DEVELOPMENT PROGRAM An eight-week comprehensive program covering open-source, lightweight JavaTM enterprise Web

    E-Print Network [OSTI]

    Schaefer, Marcus

    JavaTM enterprise Web development using POJOs (Plain Old Java Objects) DePaul University's Java Web, IL 60604-2300 (312)362-6282 ipd.cdm.depaul.edu #12;JAVA WEB DEVELOPMENT PROGRAM Development impact on the coding of business logic. Spring and Hibernate both allow the programmer to use Plain Old

  16. LIGHTWEIGHT JAVA WEB DEVELOPMENT An eight-week comprehensive program covering open-source, lightweight, Java enterprise Web

    E-Print Network [OSTI]

    Schaefer, Marcus

    -source, lightweight, Java enterprise Web development using POJOs (Plain Old Java Objects) DePaul University. Wabash Avenue, Room 301 Chicago, IL 60604-2300 (312)362-6282 ipd.cdm.depaul.edu #12;LIGHTWEIGHT JAVA WEB and Hibernate both allow the programmer to use Plain Old Java Objects (POJOs) to encode data and business logic

  17. Java Parallel Secure Stream for Grid Computing

    SciTech Connect (OSTI)

    Chen, Jie; Akers, Walter; Chen, Ying; Watson, William

    2001-09-01T23:59:59.000Z

    The emergence of high speed wide area networks makes grid computing a reality. However grid applications that need reliable data transfer still have difficulties to achieve optimal TCP performance due to network tuning of TCP window size to improve the bandwidth and to reduce latency on a high speed wide area network. This paper presents a pure Java package called JPARSS (Java Par-allel Secure Stream) that divides data into partitions that are sent over several parallel Java streams simultaneously and allows Java or Web applications to achieve optimal TCP performance in a gird environment without the necessity of tuning the TCP window size. Several experimental results are provided to show that using parallel stream is more effective than tuning TCP window size. In addi-tion X.509 certificate based single sign-on mechanism and SSL based connection establishment are integrated into this package. Finally a few applications using this package will be discussed.

  18. Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA

    E-Print Network [OSTI]

    Escolano, Francisco

    Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java 2 Índice. Ciencia de la Computación e IA Lenguaje Java 3 Java · Java es un lenguaje OO creado por Sun Microsystems

  19. U-245: Critical Java 0-day flaw exploited

    Broader source: Energy.gov [DOE]

    Targeted attacks exploiting a zero-day Java vulnerability to deliver the Poison Ivy RAT onto the unsuspecting victims' machines

  20. ISTRUZIONI INSTALLAZIONE JAVA SUN JDK (Windows) 1. Scaricare dal sito della SUN (http://java.sun.com/javase/downloads/index.jsp) l'ultima

    E-Print Network [OSTI]

    Roma "La Sapienza", Università di

    ISTRUZIONI INSTALLAZIONE JAVA SUN JDK (Windows) 1. Scaricare dal sito della SUN (http://java.sun default, Java viene installato nella cartella C:\\Sun\\SDK 3. Per compilare programmi Java, occorre settare'installazione non si è deciso di installare Java altrove, il percorso completo è il seguente: C:\\Sun

  1. Experto Universitario Java Enterprise Sesin 2: Acceso a datos

    E-Print Network [OSTI]

    Escolano, Francisco

    Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IASpring Acceso a datos Puntos a tratar · Transaccionalidad declarativa 2 #12;Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la a datos 3 #12;Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e

  2. Proving Properties of Java Threads J Strother Moore

    E-Print Network [OSTI]

    Moore, J. Strother

    Virtual Machine 1 The Apprentice System in Java The problem we consider is suggested by the Java classes shown in Figure 1. Here, the main method in the Apprentice class builds an instance of a Container implemented with Java threads. The name \\Apprentice" is both allusion to the \\Sorcerer's Apprentice" (because

  3. Fair Blind Signatures without Random Oracles Georg Fuchsbauer and Damien Vergnaud

    E-Print Network [OSTI]

    Boyer, Edmond

    Fair Blind Signatures without Random Oracles Georg Fuchsbauer and Damien Vergnaud ´Ecole normale. A fair blind signature is a blind signature with revocable anonymity and unlinkability, i requested it. In this paper we first revisit the security model for fair blind signatures given

  4. U-233: Oracle Database INDEXTYPE CTXSYS.CONTEXT Bug Lets Remote...

    Broader source: Energy.gov (indexed) [DOE]

    Bug Lets Remote Authenticated Users Gain Elevated Privileges PLATFORM: Oracle Database Server versions 10.2.0.3, 10.2.0.4, 10.2.0.5, 11.1.0.7, 11.2.0.2, 11.2.0.3 ABSTRACT: A remote...

  5. C-Oracle: Predictive Thermal Management for Data Centers Luiz Ramos and Ricardo Bianchini

    E-Print Network [OSTI]

    Bianchini, Ricardo

    C-Oracle: Predictive Thermal Management for Data Centers Luiz Ramos and Ricardo Bianchini these infrastructures, several factors may cause high temperatures in data centers: hot spots at the top sections of racks, poor design of the cooling infrastructure or air distri- bution system, inadvertent blocking

  6. Java - Dieng Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJane Capital Partners JumpMissouri:Java - DarajatJava -

  7. Java - Kamojang Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJane Capital Partners JumpMissouri:Java - DarajatJava

  8. Experto Universitario Java Enterprise Servicios Web

    E-Print Network [OSTI]

    Escolano, Francisco

    ;Experto Universitario Java Enterprise Servicios Web © 2012-2013 Depto. Ciencia de la Computación e IA-2013 Depto. Ciencia de la Computación e IA Orquestación de servicios: BPEL Orquestación vs. Coreografía Enterprise Servicios Web © 2012-2013 Depto. Ciencia de la Computación e IA Orquestación de servicios: BPEL

  9. Java programming for high-performance

    E-Print Network [OSTI]

    Goldstein, Seth Copen

    language to solv- ing large computational problems in science and en- gineering. Unless these issuesJava programming for high-performance numerical computing by J. E. Moreira S. P. Midkiff M. Gupta PTM language has taken off as a serious general-purpose programming language. Industry and academia alike have

  10. Titanium and Java Parallelism Arvind Krishnamurthy

    E-Print Network [OSTI]

    Krishnamurthy, Arvind

    1 Titanium and Java Parallelism Arvind Krishnamurthy Fall 2004 Titanium Take the best features: checked at compile time, no unsafe casts Automatic memory management Titanium is (almost) strict superset VisComplex extends Complex { ... } Immutable Classes in Titanium For small objects, would sometimes

  11. CSCI2010U Laboratory #2 Java Programming

    E-Print Network [OSTI]

    Bradbury, Jeremy S.

    " class. After the java files have been created you can copy the source code in "questions, and system prints the average. Part of the source codes is shown in the following image, Fill in the empty, fill in this part and finish the function. #12;Activity 5: Rock, Paper, Scissors (2 marks) Function q5

  12. The state of the Java universe

    ScienceCinema (OSTI)

    None

    2011-10-06T23:59:59.000Z

    Speaker Bio: James Gosling received a B.Sc. in computer science from the University of Calgary, Canada in 1977. He received a Ph.D. in computer science from Carnegie-Mellon University in 1983. The title of his thesis was The Algebraic Manipulation of Constraints. He has built satellite data acquisition systems, a multiprocessor version of UNIX®, several compilers, mail systems, and window managers. He has also built a WYSIWYG text editor, a constraint-based drawing editor, and a text editor called Emacs, for UNIX systems. At Sun his early activity was as lead engineer of the NeWS window system. He did the original design of the Java programming language and implemented its original compiler and virtual machine. He has recently been a contributor to the Real-Time Specification for Java.

  13. The state of the Java universe

    SciTech Connect (OSTI)

    None

    2011-02-08T23:59:59.000Z

    Speaker Bio: James Gosling received a B.Sc. in computer science from the University of Calgary, Canada in 1977. He received a Ph.D. in computer science from Carnegie-Mellon University in 1983. The title of his thesis was The Algebraic Manipulation of Constraints. He has built satellite data acquisition systems, a multiprocessor version of UNIX®, several compilers, mail systems, and window managers. He has also built a WYSIWYG text editor, a constraint-based drawing editor, and a text editor called Emacs, for UNIX systems. At Sun his early activity was as lead engineer of the NeWS window system. He did the original design of the Java programming language and implemented its original compiler and virtual machine. He has recently been a contributor to the Real-Time Specification for Java.

  14. T-606: Sun Java System Access Manager Lets Remote Users Partially...

    Broader source: Energy.gov (indexed) [DOE]

    CVE-2011-0844 CVE-2011-0847 Oracle Critical Patch Update Advisory IMPACT ASSESSMENT: Medium Discussion: A remote authenticated user can partially access data on the target...

  15. Pace Web Server: A Pure Java Web Server

    E-Print Network [OSTI]

    Tao, Lixin

    Pace Web Server: A Pure Java Web Server with a Servlet Container by Priya Srinivasaraghavan University 2003 #12;Abstract Pace Web Server: A Pure Java Web Server with a Servlet Container by Priya their products and services to their customers. An essential ingredient to the Internet has been the web server

  16. Experto Universitario Java Enterprise Sesin 6: Acceso remoto. Pruebas

    E-Print Network [OSTI]

    Escolano, Francisco

    Universitario Java Enterprise Acceso remoto. Pruebas © 2012-2013 Depto. Ciencia de la Computación e IA Spring 2-2013 Depto. Ciencia de la Computación e IA Spring 3 Acceso remoto en Spring · Hacer accesibles nuestros necesitaremos EJBs #12;Experto Universitario Java Enterprise Acceso remoto. Pruebas © 2012-2013 Depto. Ciencia

  17. Java for Safety-Critical Applications Thomas Henties1

    E-Print Network [OSTI]

    Vitek, Jan

    Java for Safety-Critical Applications Thomas Henties1 Siemens AG James J. Hunt aicas Doug Locke Locke Consulting, LLC Kelvin Nilsen Aonix NA Martin Schoeberl Institute of Computer Engineering Vienna for Java in real-time applications with safety requirements has led to an effort to define a new standard

  18. Titanium: Parallel Java http://titanium.cs.berkeley.edu/

    E-Print Network [OSTI]

    Titanium: Parallel Java http://titanium.cs.berkeley.edu/ #12;"Hello World" class Hello Titanium processes must synchronize at the same textual point in the program: ­ Legal barrier example guarantees made #12;Arrays and Domains Two types of Arrays in Titanium ­ Java arrays Work exactly the same

  19. Java Debug Hardware Models using JBits Jonathan Ballagh

    E-Print Network [OSTI]

    the bitstream. The rest of the JBits API is a set of constants that define the configurable resources/JBits-based hardware device models. Using the JBits API, behavioral hardware models can be written in Java and used is needed. #12;2 JBits JBits [1] is a Java API that provides access to every configurable resource in a FPGA

  20. Java - Darajat Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJane Capital Partners JumpMissouri:Java - Darajat

  1. JPARSS: A Java Parallel Network Package for Grid Computing

    SciTech Connect (OSTI)

    Chen, Jie; Akers, Walter; Chen, Ying; Watson, William

    2002-03-01T23:59:59.000Z

    The emergence of high speed wide area networks makes grid computinga reality. However grid applications that need reliable data transfer still have difficulties to achieve optimal TCP performance due to network tuning of TCP window size to improve bandwidth and to reduce latency on a high speed wide area network. This paper presents a Java package called JPARSS (Java Parallel Secure Stream (Socket)) that divides data into partitions that are sent over several parallel Java streams simultaneously and allows Java or Web applications to achieve optimal TCP performance in a grid environment without the necessity of tuning TCP window size. This package enables single sign-on, certificate delegation and secure or plain-text data transfer using several security components based on X.509 certificate and SSL. Several experiments will be presented to show that using Java parallelstreams is more effective than tuning TCP window size. In addition a simple architecture using Web services

  2. Java Jitters -The Effects of Java on Jitter in a Continuous Media Server Mark Claypool and Jonathan Tanner

    E-Print Network [OSTI]

    Claypool, Mark

    1 Java Jitters - The Effects of Java on Jitter in a Continuous Media Server Mark Claypool to the user; Jitter, the variation in latency, can cause gaps in the playout of a stream are the primary concerns for traditional text-based applications. Jitter, however, is a concern unique

  3. MSc CSYM021 Java Programming GJH: 2008 MSc Computing (Internet Technology)

    E-Print Network [OSTI]

    Hill, Gary

    The 2D java GUI application must emulate the movement of a robot (purple sphere) from one corner Office (Open 10:00 - 15:00)). Aim: Produce a technical report and accompanying application using Java 2D/3D. Brief A: 2D Right (East) Panel: The Java Swing application is to include a Java 2D graphics maze

  4. Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA

    E-Print Network [OSTI]

    Escolano, Francisco

    Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Java Avanzado Sesión 3: Tratamiento de errores #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de · Tipos genéricos #12;Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Errores - 3

  5. Radiation dosimetry data management using VAX C, FMS, RMS, DCL, and Oracle

    SciTech Connect (OSTI)

    Voltin, M.J. Jr.; Martin, A.K.

    1991-01-01T23:59:59.000Z

    The External Dosimetry Badge System was developed to support the radiation protection program at Los Alamos National Laboratory. The radiation protection program is responsible for monitoring external radiation exposures to approximately 7,500 Laboratory employees, visitors and contractors each month. External radiation exposure is measured using thermoluminescent dosimeters (TLDs). The system is used to control the assembly and distribution of TLD badges. The system monitors badge return and disassembly at the end of each month, and analyzes the TLDs to determine individual radiation exposure levels. Results are reported and stored in a database designed to maintain detailed individual exposure records. The system maintains a complete history of annual summaries for external exposures. The system is user-friendly with user prompts, menus, and extensive help functions. The completely menu-driven system uses VAX C, VAX Forms Management System, VMS Record Management Services, VMS Digital Command Language, and the Oracle Relational Database Management System. Design and development issues faced, and methods and techniques used in developing the system will be described. Topics discussed include consistent user interface design approaches, considerations for using VAX/VMS programming tools versus Oracle development tools to develop and implement the application, and overall system benefits. 3 refs.

  6. A Desktop 3D Printer in Safety-Critical Java

    E-Print Network [OSTI]

    A Desktop 3D Printer in Safety-Critical Java Tórur Biskopstø Strøm Kongens Lyngby 2012 IMM-MSc-2012-critical use cases implemented according to the specification. This thesis presents a RepRap 3D desktop printer

  7. Granting Java Native Interface Developers Their Wishes Martin Hirzel

    E-Print Network [OSTI]

    Grimm, Robert

    also recon- ciling productivity, safety, portability, and efficiency. This paper presents Jeannie interface. By combining the two languages' syntax and semantics, Jean- nie eliminates verbose boiler legacy libraries, and improve efficiency. For example, most Java programs execute native code, since

  8. T-686: IBM Tivoli Integrated Portal Java Double Literal Denial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    August 8, 2011 - 3:00pm Addthis PROBLEM: A vulnerability in the Java Runtime Environment allows unauthenticated network attacks ( i.e. it may be exploited over a...

  9. V-145: IBM Tivoli Federated Identity Manager Products Java Multiple...

    Broader source: Energy.gov (indexed) [DOE]

    Secunia Advisory SA53233 CVE-2013-0169 CVE-2013-0440 CVE-2013-0443 IMPACT ASSESSMENT: Medium DISCUSSION: CVE-2013-0440 - Unspecified vulnerability in IBM Java Runtime...

  10. Pointer analysis for Java programs : novel techniques and applications

    E-Print Network [OSTI]

    S?lcianu, Alexandru D. (Alexandru Doru), 1975-

    2006-01-01T23:59:59.000Z

    This dissertation presents a pointer analysis for Java programs, together with several practical analysis applications. For each program point, the analysis is able to construct a points-to graph that describes how local ...

  11. Experto Universitario Java Enterprise Validacin e internacionalizacin 2012-2013 Depto. Ciencia de la Computacin e IA Spring

    E-Print Network [OSTI]

    Escolano, Francisco

    Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia #12;Experto Universitario Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia Java Enterprise Validación e internacionalización © 2012-2013 Depto. Ciencia de la Computación e IA

  12. De de se

    E-Print Network [OSTI]

    Anand, Pranav

    2006-01-01T23:59:59.000Z

    In this dissertation, I argue against a unitary treatment of individual de se ascription. Based on consideration of Yoruba logophors and English dream-report pronouns, I show that one mechanism is best analyzed as binding ...

  13. Procedure-level Authorization for Java Remote Method Invocation Using SSL Credentials

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    Procedure-level Authorization for Java Remote Method Invocation Using SSL Credentials Alexander of any thread assumptions. KEYWORDS Java, RMI, RPC, mobile code, SSL, Authorization #12;i TABLE............................................................ 2 Figure 2: The creation and registration of an SSL socket

  14. The loop compiler for Java and JML Joachim van den Berg, Bart Jacobs

    E-Print Network [OSTI]

    Jacobs, Bart

    engineering process. Within this project a dynamic logic for JavaCard, Java's subset for smart cardThe loop compiler for Java and JML Joachim van den Berg, Bart Jacobs Computing Science Institute into their semantics in higher order logic. It serves as a front-end to a the- orem prover in which the actual veri#12

  15. Usage Patterns of the Java Standard API Homan Ma, Robert Amor, Ewan Tempero

    E-Print Network [OSTI]

    Amor, Robert

    Usage Patterns of the Java Standard API Homan Ma, Robert Amor, Ewan Tempero Department of Computer,ewan}@cs.auckland.ac.nz Abstract The Java Standard API has grown enormously since Java's be- ginnings, now consisting of over 3 to help determine the "typical" usage of the Standard API. We find that, in an extensive corpus of open

  16. Visualizing the Size of the Java Standard API Craig Anslow, James Noble,

    E-Print Network [OSTI]

    Anslow, Craig

    Visualizing the Size of the Java Standard API Craig Anslow, James Noble, Stuart Marshall School@cs.auckland.ac.nz ABSTRACT The design of software should be made up of small packages and classes. The Java Standard API, and nearly 50,000 methods. We have con- ducted visual software analysis on the Java Standard API using

  17. Java in the High Performance Computing Arena: Research, Practice and Experience

    E-Print Network [OSTI]

    Fraguela, Basilio B.

    Java in the High Performance Computing Arena: Research, Practice and Experience Guillermo L interest in Java for High Performance Computing (HPC) is based on the appealing features of this language in HPC. Keywords: Java, High Performance Computing, Performance Evaluation, Multi-core Architectures

  18. Component Technologies: Java Beans, COM, CORBA, RMI, EJB and the CORBA Component Model

    E-Print Network [OSTI]

    Emmerich, Wolfgang

    Component Technologies: Java Beans, COM, CORBA, RMI, EJB and the CORBA Component Model Wolfgang, such as Java Beans and distributed object technolo- gies, such as the Common Object Request Broker Archi how these technologies matured into distributed component models, in partiuclar Enterprise Java Beans

  19. A Self-Optimizing Container Design for Enterprise Java Beans Applications Mircea Trofin*

    E-Print Network [OSTI]

    A Self-Optimizing Container Design for Enterprise Java Beans Applications Mircea Trofin* , John component frameworks, such as Enterprise Java Beans (EJB), facilitate the development of easily evolvable-oriented technologies, such as Enterprise Java Beans (EJB) [1], and Commercial Off-The-Shelf (COTS) components, in order

  20. Efficiency of Thread-parallel Java Programs from Scientific Computing Holger Blaar, Matthias Legeler, Thomas Rauber

    E-Print Network [OSTI]

    the Titanium project [11] or the JavaParty project [9]. An MPI- like API for Java (MPJ) has been proposed in [3]. The rest of the paper is organized as follows: Section 2 describes several aspects of thread in the language, see, e.g., [8]. The java.lang package contains a thread API consisting of the class Thread

  1. Using a Java Optimized Processor in a Real World Application

    E-Print Network [OSTI]

    Processor Current software design practice for embedded systems is still archaic compared to soft- ware language on desktop systems, is rarely used in embedded systems. Some features of Java, like thread support in the lan- guage, could greatly simplify development of embedded systems, but the common im- plementations

  2. VMVM: Unit Test Virtualization for Java Jonathan Bell

    E-Print Network [OSTI]

    Kaiser, Gail E.

    VMVM: Unit Test Virtualization for Java Jonathan Bell Columbia University 500 West 120th St, MC New York, NY USA kaiser@cs.columbia.edu ABSTRACT As software evolves and grows, its regression test suites tend to grow as well. When these test suites become too large, they can eventually reach a point

  3. Transformations between Composite and Visitor implementations in Java

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Transformations between Composite and Visitor implementations in Java Akram Ajouli ASCOLA (EMN be chained to perform complex structure transformations. This is useful for recovering the initial a refactoring-based round- trip transformation between these two structures and we study how that transformation

  4. Improving TLB Energy for Java Applications Chinnakrishnan S. Ballapuram

    E-Print Network [OSTI]

    Lee, Hsien-Hsin "Sean"

    Improving TLB Energy for Java Applications on JVM Chinnakrishnan S. Ballapuram School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, Georgia 30332­0250 chinnak@ece.gatech.edu Hsien-Hsin S. Lee School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta

  5. Understanding Java Stack Inspection Dan S. Wallach Edward W. Felten

    E-Print Network [OSTI]

    Myers, Andrew C.

    dependent on specific artifacts of the Java imple- mentation. This paper models the stack inspection algorithm in terms of a well-understood logic for access control and demonstrates how stack inspection is a useful tool for ex- pressing and managing complex trust relationships. We show that an access control

  6. A Java Reinforcement Learning Module for the Recursive Porous

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    common to many types of reinforcement learning Includes algorithms currently in use in social scienceA Java Reinforcement Learning Module for the Recursive Porous Agent Simulation Toolkit Facilitating study and experimentation with reinforcement learning in multi-agent, social science simulations

  7. PROGRAMMER-FRIENDLY DECOMPILED JAVA Nomair A. Naeem

    E-Print Network [OSTI]

    Verbrugge, Clark

    spcifiques au compilateur javac parce qu'ils ciblent le code binaire produit par un compilateur javac for an Abstract Syntax Tree (AST) representation of Java source code and the implementation of flow analyses to semantically-equivalent ASTs that correspond to code that is easier for programmers to understand. The targeted

  8. Exploiting Memory Usage Patterns to Improve Garbage Collections in Java

    E-Print Network [OSTI]

    Lau, Francis C.M.

    Exploiting Memory Usage Patterns to Improve Garbage Collections in Java Liangliang Tong Department Science The University of Hong Kong fcmlau@cs.hku.hk Abstract Copying-based garbage collectors It is a common belief, however, that ob- jects' survival rates are generally too low to make full use

  9. 2009/03/11 1 , , @PPL2009 in Java AOP

    E-Print Network [OSTI]

    Chiba, Shigeru

    /21 2009/03/11 1 , , @PPL2009 in #12;/21 OOP AspectJ Java AOP AOP 2009/03/11 2 , , @PPL2009 in Shape Rectangle Circle TextBox class Rectangle { void setWidth(int w) { update(); } voidJ : + 2009/03/11 , , @PPL2009 in 3 aspect ObserverProtocol { around(): execution(void Shape

  10. Modular Termination Analysis for java bytecode by Term Rewriting

    E-Print Network [OSTI]

    Ábrahám, Erika

    Modular Termination Analysis for java bytecode by Term Rewriting J¨urgen Giesl LuFG Informatik 2, RWTH Aachen University, Germany joint work with C. Otto and M. Brockschmidt #12;Automated Termination (Eindhoven) TTT (Innsbruck) VMTL (Vienna) #12;Automated Termination Tools for TRSs AProVE (Aachen) CARIBOO

  11. Titanium: A Java Dialect for High Performance Computing

    E-Print Network [OSTI]

    California at Berkeley, University of

    1 1 Titanium: A Java Dialect for High Performance Computing U.C. Berkeley and LBNL http://titanium.cs.berkeley.edu Dan Bonachea (slides courtesy of Kathy Yelick) 2 Titanium Group (Past and Present) · Susan Graham ­ Large scale parallel machines · Titanium is designed for methods with ­ Structured grids ­ Locally

  12. A Java-based Science Portal for Neutron Scattering Experiments

    E-Print Network [OSTI]

    Vazhkudai, Sudharshan

    A Java-based Science Portal for Neutron Scattering Experiments Sudharshan S. Vazhkudai James A scattering facility recently commissioned by the US Department of Energy (DOE). The neutron beam produced (SNS) [14] is a large-scale leading- edge neutron scattering facility that hopes to fundamen- tally

  13. Events and Listeners Java Bootcamp -Villanova University Dr. Papalaskari 1

    E-Print Network [OSTI]

    Papalaskari, Mary-Angela

    . //***************************************************************** private class ButtonListener implements Action that describes the event Buttons · A push button is defined by the JButton class · It generates an action event java.awt.event.*; import javax.swing.*; public class PushCounterPanel extends JPanel { private int

  14. JMAD - Integration of MADX into the Java World

    E-Print Network [OSTI]

    Fuchsberger, K; Gorbonosov, R; Herr, W; Kain, V; Mueller, G; Redaelli, S; Schmidt, F; Wenninger, J

    2010-01-01T23:59:59.000Z

    MADX (Methodical Accelerator Design) is the de-facto standard software for modeling accelerator lattices at CERN. This feature-rich software package is implemented and still maintained in the programming languages C and FORTRAN. Nevertheless the controls environment of modern accelerators at CERN, e.g. of the LHC, is dominated by JAVA applications. A lot of these applications, for example for lattice measurement and fitting, require a close interaction with the numerical models, which are all defined by the use of the proprietary MADX scripting language. To close this gap an API to MADX for the JAVA programming language (JMAD) was developed. Already the current implementation provides access to a large subset of the MADX capabilities (e.g. twiss-calculations, matching or querying and setting arbitrary model parameters) without any necessity to define the models in yet another environment. This paper describes shortly the design of this project as well as the current status and some usage examples.

  15. T-606: Sun Java System Access Manager Lets Remote Users Partially Modify Data and Remote Authenticated Users Partially Access Data

    Broader source: Energy.gov [DOE]

    Sun Java System Access Manager Lets Remote Users Partially Modify Data and Remote Authenticated Users Partially Access Data.

  16. A Political Ecology of the Citarum River Basin: Exploring "Integrated Water Resources Management" in West Java, Indonesia

    E-Print Network [OSTI]

    Cavelle, Jenna

    2013-01-01T23:59:59.000Z

    Journal A POLITICAL ECOLOGY OF THE CITARUM RIVER BASINE. , Afiff, S. A. , The Ecology of Java and Bali, Singapore:

  17. A Desktop 3D Printer in Safety-Critical Java Trur Biskopst Strm

    E-Print Network [OSTI]

    Schoeberl, Martin

    A Desktop 3D Printer in Safety-Critical Java Tórur Biskopstø Strøm Department of Informatics according to the specification. In this paper we present a 3D printer and its safety-critical Java level 1 evaluate the specification by implementing a RepRap 3D desktop printer as a use case. A RepRap is a desktop

  18. Dynamic Management of Internet Telephony Servers: A Case Study based on JavaBeans and JDMK

    E-Print Network [OSTI]

    management systems. The results of our work allow us to evaluate JDMK regarding its suitability for the mana such as CORBA and JavaBeans are gaining in- creasing importance for the integrated management of net- worksDynamic Management of Internet Telephony Servers: A Case Study based on JavaBeans and JDMK

  19. Power and Performance of Native and Java Benchmarks on 130nm to 32nm Process Technologies

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Power and Performance of Native and Java Benchmarks on 130nm to 32nm Process Technologies Hadi with chip power reduc- tions. This paper examines how well process technology and mi- croarchitecture delivered on this assumption. This paper evalu- ates power and performance of native and Java workloads

  20. (c) 2001, Laszlo Gulyas, Harvard University Installing a development environment for Java

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    (for installation) ·High resolution graphic adapter and monitor (1024x768 or higher, 256 colors) ·Mouse through the following two main steps: 1.Installing the JavaTM 2 SDK, Standard Edition, v 1.4.0 (or later these steps, one after another. Installing the JavaTM 2 SDK, Standard Edition, v 1.4.1 This section describes

  1. Automated Analysis of Security-Critical JavaScript APIs Stanford University

    E-Print Network [OSTI]

    Pratt, Vaughan

    Automated Analysis of Security-Critical JavaScript APIs Ankur Taly Stanford University ataly. The trusted portion of each application may then expose an API to untrusted code, interposing a reference define the semantics of a restricted version of JavaScript devised by the ECMA Standards committee

  2. Experto Universitario Java Enterprise 2012-2013 Depto. Ciencia de la Computacin e IA

    E-Print Network [OSTI]

    Escolano, Francisco

    Experto Universitario Java Enterprise © 2012-2013 Depto. Ciencia de la Computación e IA Lenguaje Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 2 · El depurador de Eclipse Enterprise Lenguaje Java Avanzado © 2012-2013 Depto. Ciencia de la Computación e IA Depuración y logs - 3 El

  3. Titanium: A High-Performance Java Dialect Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton Miyamoto,

    E-Print Network [OSTI]

    Aiken, Alex

    Titanium: A High-Performance Java Dialect Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton Laboratory Abstract Titanium is a language and system for high-performance parallel scientific computing. Titanium uses Java as its base, thereby leveraging the advantages of that language and allowing us to focus

  4. Titanium: A HighPerformance Java Dialect \\Lambda Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton Miyamoto,

    E-Print Network [OSTI]

    Krishnamurthy, Arvind

    Titanium: A High­Performance Java Dialect \\Lambda Kathy Yelick, Luigi Semenzato, Geoff Pike National Laboratory Abstract Titanium is a language and system for high­performance parallel scientific computing. Titanium uses Java as its base, thereby leveraging the advantages of that language and allowing

  5. Titanium: A High-Performance Java Dialect* Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton Miyamoto,

    E-Print Network [OSTI]

    Titanium: A High-Performance Java Dialect* Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton Laboratory Abstract Titanium is a language and system for high-performance parallel scientific computing. Titanium uses Java as its base, thereby leveraging the advantages of that language and allowing us to focus

  6. Indexing the Java API Using Source Code Homan Ma, Robert Amor, Ewan Tempero

    E-Print Network [OSTI]

    Amor, Robert

    Standard API. The rest of this paper is organised as follows. In the next section, we discuss related workIndexing the Java API Using Source Code Homan Ma, Robert Amor, Ewan Tempero Department of Computer code as the basis for the index. Keywords: Java Standard API, Software Repositories, Source Code

  7. Vol. 48 No. SIG 0(PRO 35) 2007 Java Remote GluonJ Remote GluonJ

    E-Print Network [OSTI]

    Chiba, Shigeru

    Vol. 48 No. SIG 0(PRO 35) 2007 Java Remote GluonJ Remote GluonJ Remote GluonJ Remote GluonJ Java Remote GluonJ Remote GluonJ An AOP based Agile Development Environment for Distributed Software Muga/from the existing program easily. To support software development for Java with our method, we developed Remote

  8. Java-Wayang Windu Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias SolarJane Capital Partners JumpMissouri:Java -

  9. Towards High Performance Processing In Modern Java Based Control Systems

    E-Print Network [OSTI]

    Misiowiec, M; Buttner, M

    2011-01-01T23:59:59.000Z

    CERN controls software is often developed on Java foundation. Some systems carry out a combination of data, network and processor intensive tasks within strict time limits. Hence, there is a demand for high performing, quasi real time solutions. Extensive prototyping of the new CERN monitoring and alarm software required us to address such expectations. The system must handle dozens of thousands of data samples every second, along its three tiers, applying complex computations throughout. To accomplish the goal, a deep understanding of multithreading, memory management and interprocess communication was required. There are unexpected traps hidden behind an excessive use of 64 bit memory or severe impact on the processing flow of modern garbage collectors. Tuning JVM configuration significantly affects the execution of the code. Even more important is the amount of threads and the data structures used between them. Accurately dividing work into independent tasks might boost system performance. Thorough profili...

  10. JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frdric Guidec

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    JAMUS: Java Accommodation of Mobile Untrusted Software Nicolas Le Sommer and Frédéric Guidec VALORIA Laboratory University of South Brittany, France {Nicolas.LeSommer|Frederic.Guidec}@univ-ubs.fr 1

  11. A Limit Study of JavaScript Parallelism Emily Fortuna Owen Anderson Luis Ceze Susan Eggers

    E-Print Network [OSTI]

    Anderson, Richard

    A Limit Study of JavaScript Parallelism Emily Fortuna Owen Anderson Luis Ceze Susan Eggers Computer Science and Engineering, University of Washington {fortuna, owen, luisceze, eggers}@cs.washington.edu http

  12. Using JavaScript to simulate formative assessment questioning in web-based open learning materials 

    E-Print Network [OSTI]

    Bowerman, Chris; Mansfield, Charlie; Sewell, Keith

    1997-12-19T23:59:59.000Z

    This paper provides the JavaScript code for asking questions in web-based learning materials. The paper situates the setting of formative assessment exercises and questioning in the tradition of open learning materials design. Re-usable examples...

  13. A Java Reinforcement Learning Module for the Recursive Porous Agent Simulation Toolkit

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    A Java Reinforcement Learning Module for the Recursive Porous Agent Simulation Toolkit: facilitating study and experimentation with reinforcement learning in social science multi-agent simulations-implemented reinforcement learning algorithms . . . . . 34 4.1 The Roth-Erev algorithm . . . . . . . . . . . . . . . . .

  14. 1 Copyright 2001by ASME We describe a Java process editor to assist designers with the

    E-Print Network [OSTI]

    Cutkosky, Mark

    : a computer, a CNC mill and a vacuum chamber. But without software for decomposing new designs into suitable the process planning so that they can obtain high quality parts. Agent Message Router Java process graph

  15. An Interactive Environment for Beginning Java Programmers Kenneth J. Goldman1

    E-Print Network [OSTI]

    Goldman, Kenneth J.

    computer science. A clean, type-safe language, Java provides a garbage collected heap and a comprehensive learning curve in an artificial syntax survive. Such courses demand a bottom-up learning style and appeal

  16. A distributed and hierarchical naming scheme for Java RMI with support for persistence and caching

    E-Print Network [OSTI]

    Agni, Rohan Madhuker

    1998-01-01T23:59:59.000Z

    of Java Development Kit (JDK) 1.2, RMI shows great promise for building large-scale distributed applications. This new API, supports persistent remote object references which were unsupported formerly. Naming is an important concept in computer systems...

  17. Mineralogy of a perudic Andosol in central Java, Indonesia

    SciTech Connect (OSTI)

    Van Ranst, Eric; Utami, S. R.; Verdoodt, A.; Qafoku, Nikolla

    2008-02-15T23:59:59.000Z

    We studied the mineralogy of a perudic Andosol developed on the Dieng Tephra Sequence in central Java, Indonesia. The objective was to confirm the presence and determine the origin and stability of 2:1 and interlayered 2:1 phyllosilicates in well-drained Andosols. This was and still is a debated topic in the literature. Total elemental and selective dissolution, as well as microscopic and X-ray diffraction analyses, were performed on the soil samples collected from this site. These analyses confirmed that andic properties were present in the soil samples. The allophane content determined by selective dissolution was 3-4% in the A horizons, and increased to 12-18% in the deeper subsoil horizons. In addition, the clay fraction contained dioctahedral smectite, hydroxy-Al-interlayered 2:1 minerals (HIS), Al-chlorite, kaolinite, pyrophyllite, mica, cristobalite and some gibbsite. The silt and sand fractions were rich in plagioclase and pyroxene. The 2:1 minerals (smectite and pyrophyllite), as well as chlorite and kaolinite were of hydrothermal origin and were incorporated in the tephra during volcanic eruption. Besides desilication during dissolution of unstable minerals, Al interlayering of 2:1 layer silicates was most likely the most prominent pedogenic process. Although hydroxy-Al polymeric interlayers would normally stabilize the 2:1 clay phases, the strong weakening, and even disappearance of the characteristic XRD peaks, indicated instability of these minerals in the upper A horizons due to the perudic and intensive leaching conditions.

  18. Measuring Sulphur Dioxide (SO2) Emissions in October, 2010 Catastrophic Eruption from Merapi Volcano in Java, Indonesia

    E-Print Network [OSTI]

    Gilbes, Fernando

    Volcano in Java, Indonesia with Ozone Monitoring Instrument (OMI) José A. Morales-Collazo Geology This paper discusses sulfur dioxide (SO2) cloud emissions from Merapi Volcano in Java, Indonesia during, Indonesia. In October 26th , 2010, a catastrophic eruption was reported from Merapi causing nearly 386

  19. Using Entrez Utilities Web Service with Apache Axis2 for Java Creating a Web Service Client Application

    E-Print Network [OSTI]

    Levin, Judith G.

    Using Entrez Utilities Web Service with Apache Axis2 for Java Creating a Web Service Client Entrez Utilities Web Service using Axis2 for Java. Preinstalled Software You should have Apache Axis2.sh shell script file on Linux) in the bin directory of Axis2 installation. You will use it to generate Web

  20. The Eval that Men Do A Large-scale Study of the Use of Eval in JavaScript Applications

    E-Print Network [OSTI]

    Vitek, Jan

    The Eval that Men Do A Large-scale Study of the Use of Eval in JavaScript Applications Gregor. Transforming text into executable code with a function such as Java- Script's eval endows programmers with the ability to extend applications, at any time, and in almost any way they choose. But, this expressive power

  1. Experto Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 1

    E-Print Network [OSTI]

    Escolano, Francisco

    Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 1 Experto Universitario

  2. Especialista Universitario Java Enterprise Componentes de presentacin 2012-2013 Depto. Ciencia de la Computacin e IA Sesin 4

    E-Print Network [OSTI]

    Escolano, Francisco

    Especialista Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario Java Enterprise Componentes de presentación © 2012-2013 Depto. Ciencia de la Computación e IA Sesión 4 Experto Universitario

  3. HCIL Technical Report No. 99-07 (May 1999); http://www.cs.umd.edu/hcil Jazz: An Extensible 2D+Zooming Graphics Toolkit in Java

    E-Print Network [OSTI]

    Golbeck, Jennifer

    of energy has gone into building tools that support 3D graphics. This is largely due to the complexity of 3D+Zooming Graphics Toolkit in Java Benjamin B. Bederson, Britt McAlister Human-Computer Interaction Lab, Institute that supports applications using zooming object-oriented 2D graphics. It is built entirely in Java using Java2D

  4. Automatic Test Factoring for Java David Saff Shay Artzi Jeff H. Perkins Michael D. Ernst

    E-Print Network [OSTI]

    Ernst, Michael

    Automatic Test Factoring for Java David Saff Shay Artzi Jeff H. Perkins Michael D. Ernst MIT {saff,artzi,jhp,mernst}@csail.mit.edu Abstract Test factoring creates fast, focused unit tests from slow system-wide tests; each new unit test exercises only a subset of the functionality exercised

  5. Ground deformation associated with the eruption of Lumpur Sidoarjo mud volcano, east Java, Indonesia

    E-Print Network [OSTI]

    Aoki, Yosuke

    , Indonesia Yosuke Aoki , Teguh Purnama Sidiq 1 Earthquake Research Institute, University of Tokyo, 1-1 Yayoi. With this background, the eruption of Lumpur Sidoarjo (LUSI), eastern Java Island, Indonesia, pro- vides us), which yields good coherence even in vegetated regions like Indonesia. While Rudolph et al. (2013) used

  6. Modeling study of growth and potential geohazard for LUSI mud volcano: East Java, Indonesia

    E-Print Network [OSTI]

    Manga, Michael

    Modeling study of growth and potential geohazard for LUSI mud volcano: East Java, Indonesia Bambang., Wisma Mulia 22nd Floor, JI. Jend. Gatot Subroto 42, 12710 Jakarta, Indonesia b Bakosurtanal, Jl. Jakarta-Bogor Km. 46, 16911 Cibinong, Indonesia c Applied Geology Research Division, Institute of Technology

  7. Java technology zone technical podcast series: Andrew Glover interviews experts on a variety of topics

    E-Print Network [OSTI]

    Java technology zone technical podcast series: Season 1 Andrew Glover interviews experts on a variety of topics Skill Level: Introductory Andrew Glover Author and developer Beacon50 10 Aug 2010 by the engaging and technically curious Andrew Glover, provides a new way to get information from the sources you

  8. Vol. 2, No. 2, MarchAprile 2003 Interaction between Objects in powerJava

    E-Print Network [OSTI]

    van der Torre, Leon

    programming languages, we take inspiration from how access control is regulated by means of roles. Roles allowVol. 2, No. 2, March­Aprile 2003 Interaction between Objects in powerJava Matteo Baldoni, Universit to different users by means of access control and keep track of the state of the interaction with each user

  9. jCT: A Java Code Tomograph Markus Lumpe, Samiran Mahmud, and Olga Goloshchapova

    E-Print Network [OSTI]

    Lumpe, Markus

    jCT: A Java Code Tomograph Markus Lumpe, Samiran Mahmud, and Olga Goloshchapova Faculty,smahmud,ogoloshchapova}@swin.edu.au Abstract--We are concerned with analyzing software, in par- ticular, with its nature and how developer software engineering where measurement seeks to capture attributes affecting the product, process

  10. Babylon v2.0:Middleware for Distributed, Parallel, and Mobile Java Applications Willem van Heiningen

    E-Print Network [OSTI]

    MacDonald, Steve

    method invocation and remote class loading while providing an easy-to-use interface. Addi- tionally, Babylon v2.0 enables Java applications to seam- lessly create and interact with remote objects while a heat diffusion example to show how they are used in practice. The po- tential cluster computing

  11. Safe Upper-bounds Inference of Energy Consumption for Java Bytecode Applications

    E-Print Network [OSTI]

    Politécnica de Madrid, Universidad

    Safe Upper-bounds Inference of Energy Consumption for Java Bytecode Applications (Extended Abstract relying on autonomous on-board data analysis. Intermediate Representation Resource Usage Analysis Energy- mize energy consumption. Several approaches have been developed for estimating the en- ergy consumption

  12. Especialista Universitario Java Enterprise 2010-2011 Depto. Ciencia de la Computacin e IA

    E-Print Network [OSTI]

    Escolano, Francisco

    Especialista Universitario Java Enterprise © 2010-2011 Depto. Ciencia de la Computación e IA Sesión 1: Introducción a JMS #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la Computación · Una Aplicación JMS · PTP · Pub/Sub #12;Servicios de Mensajes con JMS © 2010-2011 Depto. Ciencia de la

  13. 2010-2011 Depto. Ciencia de la Computacin e IA Especialista Universitario Java Enterprise

    E-Print Network [OSTI]

    Escolano, Francisco

    © 2010-2011 Depto. Ciencia de la Computación e IA Especialista Universitario Java Enterprise Struts Sesión 4: Introducción a Struts 2 #12;© 2010-2011 Depto. Ciencia de la Computación e IA Especialista · Taglibs · Internacionalización · Validación · Conceptos nuevos en Struts 2 #12;© 2010-2011 Depto. Ciencia

  14. Olderfirst Garbage Collection in Practice: Evaluation in a Java Virtual Machine

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Older­first Garbage Collection in Practice: Evaluation in a Java Virtual Machine #3; Darko recently, the best performing copying garbage collectors used a generational policy which repeatedly collects the older space. A previous study that used garbage­ collection simulation pointed to potential

  15. Older-first Garbage Collection in Practice: Evaluation in a Java Virtual Machine,

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Older-first Garbage Collection in Practice: Evaluation in a Java Virtual Machine, Darko Stefanovid performing copying garbage collectorsused a generational policy which repeatedly collects the very youngest. A previous study that used garbage- collection simulation pointed to potential improvements by using an Older

  16. Using a Secure Java Micro-kernel on Embedded Devices for the Reliable Execution of

    E-Print Network [OSTI]

    Binder, Walter

    Using a Secure Java Micro-kernel on Embedded Devices for the Reliable Execution of Dynamically Uploaded Applications Walter Binder and Bal´azs Lichtl CoCo Software Engineering GmbH Margaretenstr. 22 applications. Mobile code is used for application upload, as well as for remote configuration and maintenance

  17. SAT-based Termination Analysis for Java Bytecode with AProVE

    E-Print Network [OSTI]

    Ábrahám, Erika

    SAT-based Termination Analysis for Java Bytecode with AProVE Carsten Fuhs LuFG Informatik 2, RWTH solving engines for the search problems in automated termination analysis. Consequently, the performance of current termination tools heavily relies on the speed of modern SAT solvers on the corresponding SAT

  18. Automated Detection of Non-Termination and NullPointerExceptions for Java Bytecode

    E-Print Network [OSTI]

    Ábrahám, Erika

    Automated Detection of Non-Termination and NullPointerExceptions for Java Bytecode Marc (JBC), which is based on constructing and analyzing termination graphs. These graphs represent all to detect non-termination or NullPointerExceptions. Our approach automatically generates witnesses, i

  19. Analysis of the Seismic Activity Associated with the 20101 Eruption of Merapi Volcano, Java2

    E-Print Network [OSTI]

    Boyer, Edmond

    Analysis of the Seismic Activity Associated with the 20101 Eruption of Merapi Volcano, Java2 3 4 Keywords16 Merapi Volcano, Volcano Seismology, Eruption Forecasting, Pre-eruptive Seismicity,17 RSAM. The main features of the seismic activity during the23 pre-eruptive period and the crisis are presented

  20. Middleware Support for the Deployment of Resource-Aware Parallel Java Components on Heterogeneous Distributed Platforms

    E-Print Network [OSTI]

    Boyer, Edmond

    Distributed Platforms Yves Mahéo, Frédéric Guidec, Luc Courtrai VALORIA Laboratory, Université de Bretagne of the Concerto platform, which is dedicated to supporting the deployment of resource-aware parallel Java components on heteroge- neous distributed platforms, such as pools of workstations in labs or offices. Our

  1. Region Analysis and Transformation for Java Programs Sigmund Cherem and Radu Rugina

    E-Print Network [OSTI]

    Rugina, Radu

    , the compiler automatically translates it into an equivalent output program with region-based memory management]: Program Analysis General Terms Languages, Performance Keywords Region-based memory management, pointer. For instance, the Real-Time Specification for Java (RTSJ) [5] allows real-time programs to manage data with

  2. Oracle BI Answers

    Broader source: Energy.gov (indexed) [DOE]

    Awarded","Total Outlaid","Award Date" "Advanced Research Projects Agency - Energy","AL-ALABAMA","Program Direction - ARPA -E","NASAGEORGE C MARSHALL SPACE FLIGHT...

  3. A genetic-algorithm-based method to find the unitary transformations for any de- sired quantum computation and application to a one-bit oracle decision problem

    E-Print Network [OSTI]

    Jeongho Bang; Seokwon Yoo

    2015-01-07T23:59:59.000Z

    We propose a genetic-algorithm-based method to find the unitary transformations for any desired quantum computation. We formulate a simple genetic algorithm by introducing the "genetic parameter vector" of the unitary transformations to be found. In the genetic algorithm process, all components of the genetic parameter vectors are supposed to evolve to the solution parameters of the unitary transformations. We apply our method to find the optimal unitary transformations and to generalize the corresponding quantum algorithms for a realistic problem, the one-bit oracle decision problem, or the often-called Deutsch problem. By numerical simulations, we can faithfully find the appropriate unitary transformations to solve the problem by using our method. We analyze the quantum algorithms identified by the found unitary transformations and generalize the variant models of the original Deutsch's algorithm.

  4. Seismic facies and growth history of Miocene carbonate platforms, Wonocolo Formation, North Madura area, East Java Basin, Indonesia

    E-Print Network [OSTI]

    Adhyaksawan, Rahadian

    2002-01-01T23:59:59.000Z

    The Miocene Wonocolo Formation in the North Madura area, East Java Basin, contains numerous isolated carbonate platforms that are broadly distributed across a ~3000 sq km area of the Indonesian back-arc region. The Wonocolo platforms provide...

  5. Designing and developing portable large-scale JavaScript web applications within the Experiment Dashboard framework

    E-Print Network [OSTI]

    Andreeva, J; Karavakis, E; Kokoszkiewicz, L; Nowotka, M; Saiz, P; Tuckett, D

    2012-01-01T23:59:59.000Z

    Improvements in web browser performance and web standards compliance, as well as the availability of comprehensive JavaScript libraries, provides an opportunity to develop functionally rich yet intuitive web applications that allow users to access, render and analyse data in novel ways. However, the development of such large-scale JavaScript web applications presents new challenges, in particular with regard to code sustainability and team-based work. We present an approach that meets the challenges of large-scale JavaScript web application design and development, including client-side model-view-controller architecture, design patterns, and JavaScript libraries. Furthermore, we show how the approach leads naturally to the encapsulation of the data source as a web API, allowing applications to be easily ported to new data sources. The Experiment Dashboard framework is used for the development of applications for monitoring the distributed computing activities of virtual organisations on the Worldwide LHC Comp...

  6. method shelters Ruby [1] Open class MultiJava [6] Open

    E-Print Network [OSTI]

    Chiba, Shigeru

    setBorder 3. 2 3. 1 exposedly hiddenly 4 #12;29 (2012 ) 5 1 shelter win7; 2 revise Window{ 3 void set1 29 (2012 ) method shelters 1 Ruby [1] Open class MultiJava [6] Open class GluonJ [5;2 29 (2012 ) method shelters 2 Windows XP GUI Window Windows 7 GUI ( 1) "revise C{ML0 ML1 ....}" C ML

  7. Strong exception-safety for Java-like languages Giovanni Lagorio

    E-Print Network [OSTI]

    Robbiano, Lorenzo

    in Java: sup- pose we need to model a pub serving beers to customers; the following method serve takes a Customer c, as argument, and performs this task. 1 class Pub { 2 void serve(Customer c) 3 throws NoBeersException , 4 NotEnoughMoneyException { 5 getMoneyFrom (c); 6 if (beers.isEmpty ()) 7 throw new NoBeers

  8. Java Programming for High Performance Numerical Computing J. E. Moreira S. P. Midkiff M. Gupta P. V. Artigas M. Snir R. D. Lawrence

    E-Print Network [OSTI]

    Goldstein, Seth Copen

    related to Java's applicability to solving large computational problems in science and engineering. Unless are an essential tool in many areas of science and engineering. Computations with complex numbers needJava Programming for High Performance Numerical Computing J. E. Moreira S. P. Midkiff M. Gupta P. V

  9. 1. Program 6 Instructions, CS102, Prof. Loftin Write the code for a Java applet which draws a traffic light and uses

    E-Print Network [OSTI]

    Loftin, John

    a traffic light and uses a push button to change the state of the light (from green to yellow to red to green in the usual way). Derive the drawing surface from the JPanel class and use another panel should import the needed Java libraries as in FahrenheitPanel.java. You should implement the constructor

  10. Bioavailability of Particle-Associated Se to the Bivalve Potamocorbula

    E-Print Network [OSTI]

    of Se(0) by generatingradioisotopic75Se(0)throughbacterialdissimilatory reduction of 75SeO3 2- by pure by reducing 75SeO3 2- with ascorbic acid (AA). Speciation determinations showed that AA and SES were >90% Se(0. After 113 d of incubation, 36% of SES Se(0) was oxidized to SeO3 2-. Assimilation of total particulate

  11. A Generational On-the-y Garbage Collector for Java Tamar Domani Elliot K. Kolodner y Erez Petrank z

    E-Print Network [OSTI]

    Petrank, Erez

    A Generational On-the- y Garbage Collector for Java Tamar Domani #3; Elliot K. Kolodner y Erez Petrank z Abstract An on-the- y garbage collector does not stop the program threads to perform the collection. Instead, the collector executes in a separate thread (or pro- cess) in parallel to the program

  12. A Generational On-the-y Garbage Collector for Java Tamar Domani Elliot K. Kolodner y Erez Petrank z

    E-Print Network [OSTI]

    Petrank, Erez

    A Generational On-the- y Garbage Collector for Java Tamar Domani #3; Elliot K. Kolodner y Erez Petrank z Abstract An on-the- y garbage collector does not stop the program threads to perform the collection. Instead, the collector executes in a separate thread (or process) in parallel to the program. On

  13. Implementation of Resource Adapter for SAP R/3 and generation of java-proxy class of BAPIs

    E-Print Network [OSTI]

    Moeller, Ralf

    SAP as their Enterprise Information System. Integrating the EIS with the existing Application Server-Oriented approach in accessing the data from the EIS. For the SAP system, java-proxy class of BAPIs can be generated to access the data from SAP R/3. My project work is concerned with developing a Resource Adapter for SAP

  14. Vol. 6, No. 2, Special Issue OOPS Track at SAC 2006, February 2007 Interaction between Objects in powerJava

    E-Print Network [OSTI]

    Torino, Università di

    in powerJava Matteo Baldoni, Universit`a degli Studi di Torino - Italy Guido Boella, Universit`a degli adaptability reasons, offer different operations to different users by means of access control and keep track objects directly in object oriented programming languages, we take inspiration from how access control

  15. Q Cells SE | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form History Facebook icon TwitterZip JumpProwindPudaPvT CapitalQ Cells SE

  16. Understanding resonance graphs using Easy Java Simulations (EJS) and why we use EJS

    E-Print Network [OSTI]

    Wee, Loo Kang; Chew, Charles; Wong, Darren; Tan, Samuel

    2015-01-01T23:59:59.000Z

    This paper reports a computer model- simulation created using Easy Java Simulation (EJS) for learners to visualize how the steady-state amplitude of a driven oscillating system varies with the frequency of the periodic driving force. The simulation shows (N=100) identical spring-mass systems being subjected to (1) periodic driving force of equal amplitude but different driving frequencies and (2) different amount of damping. The simulation aims to create a visually intuitive way of understanding how the series of amplitude versus driving frequency graphs are obtained by showing how the displacement of the system changes over time as it transits from the transient to the steady state. A suggested how to use the model is added to help educators and students in their teaching and learning, where we explained the theoretical steady state equation, time conditions when the model starts allowing data recording of maximum amplitudes to closely match the theoretical equation and steps to collect different runs of deg...

  17. Identification of earthquakes that generate tsunamis in Java and Nusa Tenggara using rupture duration analysis

    SciTech Connect (OSTI)

    Pribadi, S., E-mail: sugengpribadimsc@gmail.com [Tsunami Warning Information Division, Indonesian Meteorological Climatological and Geophysical Agency (BMKG), Jalan Angkasa I No. 2, Jakarta13920 and Graduate Student of Earth Sciences, Faculty of Earth Sciences and Technology, Bandung Institute of T (Indonesia); Puspito, N. T.; Yudistira, T.; Afnimar,; Ibrahim, G. [Global Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology (ITB), Jalan Ganesha 10, Bandung 40132 (Indonesia); Laksono, B. I. [Database Maintenance Division, Indonesian Meteorological Climatological and Geophysical Agency (BMKG), Jalan Angkasa I No.2, Jakarta 13920 (Indonesia); Adnan, Z. [Database Maintenance Division, Indonesian Meteorological Climatological and Geophysical Agency (BMKG), Jalan Angkasa I No. 2, Jakarta 13920 and Graduate Student of Earth Sciences, Faculty of Earth Sciences and Technology, Bandung Institute of Technol (Indonesia)

    2014-09-25T23:59:59.000Z

    Java and Nusa Tenggara are the tectonically active of Sunda arc. This study discuss the rupture duration as a manifestation of the power of earthquake-generated tsunami. We use the teleseismic (30° - 90°) body waves with high-frequency energy Seismometer is from IRIS network as amount 206 broadband units. We applied the Butterworth high bandpass (1 - 2 Hz) filtered. The arrival and travel times started from wave phase of P - PP which based on Jeffrey Bullens table with TauP program. The results are that the June 2, 1994 Banyuwangi and the July 17, 2006 Pangandaran earthquakes identified as tsunami earthquakes with long rupture duration (To > 100 second), medium magnitude (7.6 < Mw < 7.9) and located near the trench. The others are 4 tsunamigenic earthquakes and 3 inland earthquakes with short rupture duration start from To > 50 second which depend on its magnitude. Those events are located far from the trench.

  18. Using Java for Real-Time Critical Industrial Robot Programming Andreas Schierl, Andreas Angerer, Alwin Hoffmann, Michael Vistein and Wolfgang Reif

    E-Print Network [OSTI]

    Reif, Wolfgang

    Using Java for Real-Time Critical Industrial Robot Programming Andreas Schierl, Andreas Angerer, Alwin Hoffmann, Michael Vistein and Wolfgang Reif I. VISION Industrial robotics is characterized programming languages. Additionally, to become an acceptable replacement in industrial applications

  19. Temperature dependent band offsets in PbSe/PbEuSe quantum well heterostructures

    SciTech Connect (OSTI)

    Simma, M.; Bauer, G.; Springholz, G. [Institut fuer Halbleiter und Festkoerperphysik, Johannes Kepler Universitaet, A-4040 Linz (Austria)

    2012-10-22T23:59:59.000Z

    The band offsets of PbSe/Pb{sub 1-x}Eu{sub x}Se multi-quantum wells grown by molecular beam epitaxy are determined as a function of temperature and europium content using temperature-modulated differential transmission spectroscopy. The confined quantum well states in the valence and conduction bands are analyzed using a k{center_dot}p model with envelope function approximation. From the fit of the experimental data, the normalized conduction band offset is determined as 0.45{+-}0.15 of the band gap difference, independently of Eu content up to 14% and temperature from 20 to 300 K.

  20. Reaction kinetics of a-CuInSe2 formation from an In2Se3/CuSe bilayer precursor film

    E-Print Network [OSTI]

    Anderson, Timothy J.

    with Ga or S are proven absorber materials for high efficiency thin film solar cells. Interestingly CIGS system using the stacked elemental film precursors (e.g. glass/Cu/In/Se, glass/Cu/Se, glass

  1. Appears in the proceedings of the First ACM Conference on Computer and Communications Se curity, ACM, November 1993.

    E-Print Network [OSTI]

    Bellare, Mihir

    , ACM, November 1993. Random Oracles are Practical: A Paradigm for Designing Efficient Protocols Mihir and cryptographic practice. In the paradigm we suggest, a practical protocol P is produced by first devising provided a potentially invaluable notion for cryptographic practice: the idea of provable security

  2. Synthesis and optical study of green light emitting polymer coated CdSe/ZnSe core/shell nanocrystals

    SciTech Connect (OSTI)

    Tripathi, S.K., E-mail: surya@pu.ac.in [Department of Physics, Center of Advanced Study in Physics, Panjab University, Chandigarh 160 014 (India); Sharma, Mamta [Department of Physics, Center of Advanced Study in Physics, Panjab University, Chandigarh 160 014 (India)

    2013-05-15T23:59:59.000Z

    Highlights: ? Synthesis of Polymer coated core CdSe and CdSe/ZnSe core/shell NCs. ? From TEM image, the spherical nature of CdSe and CdSe/ZnSe is obtained. ? Exhibiting green band photoemission peak at 541 nm and 549 nm for CdSe core and CdSe/ZnSe core/shell NCs. ? The shell thickness has been calculated by using superposition of quantum confinement energy model. - Abstract: CdSe/ZnSe Core/Shell NCs dispersed in PVA are synthesized by chemical method at room temperature. This is characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV/Vis spectra and photoluminescence spectroscopy (PL). TEM image shows the spherical nature of CdSe/ZnSe core/shell NCs. The red shift of absorption and emission peak of CdSe/ZnSe core/shell NCs as compared to CdSe core confirmed the formation of core/shell. The superposition of quantum confinement energy model is used for calculation of thickness of ZnSe shell.

  3. Cotinga Alirrufa La Cotinga Alirrufa se distribuye en

    E-Print Network [OSTI]

    Cuervo, Andrés

    . inventarios y su estudio, la situación actual de esta especie en Colombia. Se considera casi Aphanotriccus

  4. 31P Solid State NMR Studies of Metal Selenophosphates Containing [P2Se6]4-, [P4Se10]4-, [PSe4]3-, [P2Se7]4-, and [P2Se9]4-Ligands

    E-Print Network [OSTI]

    Weliky, David

    31P Solid State NMR Studies of Metal Selenophosphates Containing [P2Se6]4-, [P4Se10]4-, [PSe4]3-, [P2Se7]4-, and [P2Se9]4- Ligands Christian G. Canlas, Mercouri G. Kanatzidis, and David P. Weliky P solid-state nuclear magnetic resonance (NMR) spectra of 12 metal-containing selenophosphates have

  5. Fluorescence relaxation dynamics of CdSe and CdSe/CdS core/shell quantum dots

    SciTech Connect (OSTI)

    Kaur, Gurvir; Kaur, Harmandeep [Centre of Advanced Study in Physics, Department of Physics, Panjab University, Chandigarh-160014 (India); Tripathi, S. K., E-mail: surya@pu.ac.in [Centre of Advanced Study in Physics, Panjab University, Chandigarh- 160014 (India)

    2014-04-24T23:59:59.000Z

    Time-resolved fluorescence spectra for colloidal CdSe and CdSe/CdS core/shell quantum dots have been investigated to know their electron relaxation dynamics at the maximum steady state fluorescence intensity. CdSe core and CdSe/CdS type I core-shell materials with different shell (CdS) thicknesses have been synthesized using mercaptoacetic acid as a capping agent. Steady state absorption and emission studies confirmed successful synthesis of CdSe and CdSe/CdS core-shell quantum dots. The fluorescence shows a tri-exponential decay with lifetimes 57.39, 7.82 and 0.96 ns for CdSe quantum dots. The lifetime of each recombination decreased with growth of CdS shell over the CdSe core, with maximum contribution to fluorescence by the fastest transition.

  6. Twinning effect on photoluminescence spectra of ZnSe nanowires

    SciTech Connect (OSTI)

    Xu, Jing; Wang, Chunrui, E-mail: crwang@dhu.edu.cn; Wu, Binhe; Xu, Xiaofeng [Department of Applied Physics and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 Renmin Rd. North, Songjiang District, Shanghai 201620 (China); Chen, Xiaoshuang [Department of Applied Physics and State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, 2999 Renmin Rd. North, Songjiang District, Shanghai 201620 (China); National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Science, Shanghai 200083 (China); Oh, Hongseok; Baek, Hyeonjun; Yi, Gyu-Chul [Department of Physics and Astronomy, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-747 (Korea, Republic of)

    2014-11-07T23:59:59.000Z

    Bandgap engineering in a single material along the axial length of nanowires may be realized by arranging periodic twinning, whose twin plane is vertical to the axial length of nanowires. In this paper, we report the effect of twin on photoluminescence of ZnSe nanowires, which refers to the bandgap of it. The exciton-related emission peaks of transverse twinning ZnSe nanowires manifest a 10-meV-blue-shift in comparison with those of longitudinal twinning ZnSe nanowires. The blue-shift is attributed to quantum confinement effect, which is influenced severely by the proportion of wurtzite ZnSe layers in ZnSe nanowires.

  7. Spectral photoresponse of ZnSe/GaAs(001) heterostructures with CdSe ultra-thin quantum well insertions

    SciTech Connect (OSTI)

    Valverde-Chávez, D. A.; Sutara, F.; Hernández-Calderón, I. [Physics Department, Cinvestav-IPN, Av. IPN 2508, 07360 México, DF (Mexico)

    2014-05-15T23:59:59.000Z

    We present a study of the spectral photoresponse (SPR) of ZnSe/GaAs(001) heterostructures for different ZnSe film thickness with and without CdSe ultra-thin quantum well (UTQW) insertions. We observe a significant increase of the SPR of heterostructures containing 3 monolayer thick CdSe UTQW insertions; these results encourage their use in photodetectors and solar cells.

  8. Thermoelectric transport of Se-rich Ag{sub 2}Se in normal phases and phase transitions

    SciTech Connect (OSTI)

    Mi, Wenlong; Lv, Yanhong [State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China); University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049 (China); Qiu, Pengfei; Shi, Xun, E-mail: xshi@mail.sic.ac.cn, E-mail: cld@mail.sic.ac.cn; Chen, Lidong, E-mail: xshi@mail.sic.ac.cn, E-mail: cld@mail.sic.ac.cn [State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (China); CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China); Zhang, Tiansong [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences,1295 Dingxi Road, Shanghai 200050 (China)

    2014-03-31T23:59:59.000Z

    Small amount of Se atoms are used to tune the carrier concentrations (n{sub H}) and electrical transport in Ag{sub 2}Se. Significant enhancements in power factor and thermoelectric figure of merit (zT) are observed in the compositions of Ag{sub 2}Se{sub 1.06} and Ag{sub 2}Se{sub 1.08}. The excessive Se atoms do not change the intrinsically electron-conducting character in Ag{sub 2}Se. The detailed analysis reveals the experiment optimum carrier concentration in Ag{sub 2}Se is around 5?×?10{sup 18}?cm{sup ?3}. We also investigate the temperature of maximum zT and the thermoelectric transport during the first order phase transitions using the recently developed measurement system.

  9. Glass formation and the third harmonic generation of Cu{sub 2}Se–GeSe{sub 2}–As{sub 2}Se{sub 3} glasses

    SciTech Connect (OSTI)

    Reshak, A. H., E-mail: maalidph@yahoo.co.uk [New Technologies-Research Centre, University of West Bohemia, Univerzitni 8, 306 14 Pilsen (Czech Republic); Center of Excellence Geopolymer and Green Technology, School of Material Engineering, University Malaysia Perlis, 01007 Kangar, Perlis (Malaysia); Klymovych, O. S.; Zmiy, O. F. [Department of Inorganic and Physical Chemistry, Lesya Ukrainka Eastern European National University, Voli Av. 13, 43025 Lutsk (Ukraine); Myronchuk, G. L.; Zamuruyeva, O. V. [Department of Physics, Lesya Ukrainka Eastern European National University, Voli Av. 13, 43025 Lutsk (Ukraine); Alahmed, Z. A. [Department of Physics and Astronomy, King Saud University, Riyadh 11451 (Saudi Arabia); Chyský, J.; Bila, Jiri [Department of Instrumentation and Control Engineering, Faculty of Mechanical Engineering, CTU in Prague, Technicka 4, 166 07 Prague 6 (Czech Republic); Kamarudin, H. [Center of Excellence Geopolymer and Green Technology, School of Material Engineering, University Malaysia Perlis, 01007 Kangar, Perlis (Malaysia)

    2014-10-14T23:59:59.000Z

    We have performed the investigation of the nonlinear optical properties namely the third harmonic generation (THG) of the glass-formation region in the Cu{sub 2}Se–GeSe{sub 2}–As{sub 2}Se{sub 3} system. The samples were synthesized by direct single-temperature method from high-purity elementary substances. We have found that the value of disorder parameter ? depends on the composition of the glassy alloys. The measurements show that increasing the Cu{sub 2}Se concentration leads to increased slope of the absorption edge, which may be explained by the decrease of the height of random potential relief for the electrons in the tails of the state density which border the band edges. A very sharp increase in the THG at low temperature was observed. Significant enhancement in THG was obtained with decreasing the energy gap, which agreed well with the nonlinear optical susceptibilities obtained from other glasses.

  10. ammassalik island se: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Park Headquarters, Ventu- ra County, California. Conlee, Christina A 2000-01-01 26 infantil no se denuncia Multidisciplinary Databases and Resources Websites Summary:...

  11. Computer Methods International Corp. (CMiC) is a software Development firm specializing in enterprise financial and cost management systems designed for the

    E-Print Network [OSTI]

    Ellis, Randy

    Computer Methods International Corp. (CMiC) is a software Development firm specializing/SQL o Oracle - 9i / 10g / 11g #12;o Java Reporting Tools · Knowledge / Experience of the following is an asset: o Oracle Reports o JSP / JSF / HTML / Web Technologies · Excellent written and oral communication

  12. E S P A O L V A L E N C I E N G L I S H Experto Java

    E-Print Network [OSTI]

    Escolano, Francisco

    Persistence API (1,5 créditos/ 15 horas) Profesor: Domingo Gallardo Servicios REST (1,5 créditos / 15 horas. Sus versiones más recientes permiten desarrollos ligeros basados en servicios REST y desplegables en tecnologías Java EE 7 (Componentes Web, JPA, Componentes Enterprise Beans, Servicios REST) y su despliegue en

  13. Workshop on Revisions to SE 2004 Mark Ardis David Budgen

    E-Print Network [OSTI]

    Ardis, Mark

    Workshop on Revisions to SE 2004 Mark Ardis David Budgen Stevens Institute of Technology University-day workshop on needed revisions to Software Engineering 2004: Curriculum Guidelines for Undergraduate Degree Programs in Software Engineering (SE 2004). A brief overview of the current guidelines and their revision

  14. HA133F10SE1558 Final Report

    E-Print Network [OSTI]

    HA133F10SE1558 Final Report Trainable Video Analytic Software (HA133F10SE1558) October 20, 2010.4 Machine / Human Concepts 9 4.0 SeaUrchin Data 10 4.1 Halibut Detection Performance 12 4.1.1 Understanding) investigated the use of machine vision technology applied to electronic monitoring of the Rockfish fishery

  15. p1 RJM 07/01/14 SE3SE11 -Sustainable Electrical Energy -Gaia Dr Richard Mitchell 2014

    E-Print Network [OSTI]

    Mitchell, Richard

    p1 RJM 07/01/14 SE3SE11 - Sustainable Electrical Energy - Gaia © Dr Richard Mitchell 2014 1 : Sustainable Electrical Energy - Gaia This module considers the sustainable aspects of Electrical Energy For instance, various colleagues, including Dr George Whitfield, researched photovoltaic solar systems

  16. Optical Probing of metamagnetic phases in epitaxial EuSe

    SciTech Connect (OSTI)

    Galgano, G. D.; Henriques, A. B. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970 Sao Paulo (Brazil); Bauer, G.; Springholz, G. [Institut fuer Halbleiter und Festkoerperphysik, Johannes Kepler Universitaet Linz, 4040 Linz (Austria)

    2011-12-23T23:59:59.000Z

    EuSe is a wide gap magnetic semiconductors with a potential for applications in proof-of-concept spintronic devices. When the temperature is lowered, EuSe goes through sharp transitions between a variety of magnetic phases and is thus described as metamagnetic. The purpose of the present investigation is to correlate the magnetic order to the sharp dichroic doublet, discovered recently in high quality thin epitaxial layers of EuSe, grown by molecular beam epitaxy. We report detailed measurements of the doublet positions and intensities as a function of magnetic field in low temperatures, covering several magnetic phases.

  17. Exploring JavaScript and ROOT technologies to create Web-based ATLAS analysis and monitoring tools

    E-Print Network [OSTI]

    Sanchez, Arturo; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    We explore the potentialities of current web applications to create online interfaces that allow the visualization, interaction and real physics cut-based analysis and monitoring of processes trough a web browser. The project consists in the initial development of web-based and cloud computing services to allow students and researches to perform fast and very useful cut-based analysis on a browser, reading and using real data and official Monte-Carlo simulations stored in ATLAS computing facilities. Several tools are considered: ROOT, JavaScript and HTML. Our study case is the current cut-based H->ZZ->llqq analysis of the ATLAS experiment. Preliminary but satisfactory results have been obtained online; this presentation describes the tests and plans and future upgrades.

  18. Exploring JavaScript and ROOT technologies to create Web-based ATLAS analysis and monitoring tools

    E-Print Network [OSTI]

    Sanchez, Arturo; The ATLAS collaboration

    2015-01-01T23:59:59.000Z

    We explore the potentialities of current web applications to create online interfaces that allow the visualization, interaction and real physics cut-based analysis and monitoring of processes trough a web browser. The project consists in the initial development of web-based and cloud computing services to allow students and researches to perform fast and very useful cut-based analysis on a browser, reading and using real data and official Monte-Carlo simulations stored in ATLAS computing facilities. Several tools are considered: ROOT, JavaScript and HTML. Our study case is the current cut-based $H \\rightarrow ZZ \\rightarrow llqq$ analysis of the ATLAS experiment. Preliminary but satisfactory results have been obtained online.

  19. Hot exciton transport in ZnSe quantum wells

    E-Print Network [OSTI]

    Zhao, Hui; Moehl, Sebastian; Wachter, Sven; Kalt, Heinz

    2002-02-01T23:59:59.000Z

    The in-plane transport of excitons in ZnSe quantum wells is investigated directly by microphotoluminescence in combination with a solid immersion lens. Due to the strong Froehlich coupling, the initial kinetic energy of the excitons is well...

  20. Campus Security Report 1 Campus seCurity

    E-Print Network [OSTI]

    Wilmers, Chris

    Campus Security Report 1 Campus seCurity and Fire saFety report UC Santa Cruz 2010 #12;Campus Security Report 2 UC Santa Cruz Geography ........................................................ 8 Security and Access to Campus Buildings and Grounds ........................................ 8

  1. Inkrafttreten Diese Ordnung tritt mit Genehmigung durch die Se-

    E-Print Network [OSTI]

    Hoffmeister, Thomas S.

    § 7 Inkrafttreten Diese Ordnung tritt mit Genehmigung durch die Se- natorin für Bildung und. Artikel 2 Die �nderung tritt nach der Genehmigung des Rek- tors mit Wirkung vom 1. Oktober 2007 in Kraft

  2. Quantum size effects and transport phenomena in PbSe quantum wells and PbSe/EuS superlattices

    SciTech Connect (OSTI)

    Rogacheva, E. I.; Nashchekina, O. N.; Ol'khovskaya, S. I.; Sipatov, A. Yu. [National technical university Kharkov polytechnic institute, 21 Frunze St., Kharkov, 61002 (Ukraine); Dresselhaus, M. S. [Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge MA 02139 (United States)

    2013-12-04T23:59:59.000Z

    It is established that the room-temperature dependences of transport properties on the total thickness of PbSe layers d in PbSe/EuS superlattices exhibit an oscillatory behavior. It is shown that the oscillation period ?d practically coincides with the period of the thickness oscillations observed earlier in single PbSe/EuS quantum well. The non-monotonic character of these dependences is attributed to quantum size effects. The theoretically estimated and experimentally determined ?d values are in good agreement.

  3. MINIREVIEW / MINISYNTHE` SE The role of chromatin structure in regulating

    E-Print Network [OSTI]

    Krebs, Jocelyn E.

    within many stress-induced promoters, such as stress re- sponse elements and heat shock elements, allow. Key words: chromatin, transcription, stress response, heat shock. Re´sume´ : Toutes les cellules, quMINIREVIEW / MINISYNTHE` SE The role of chromatin structure in regulating stress

  4. se de doctorat en informatique Comprendre le Web cach

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    niveau à l'aide de telles descriptions. Abstract e hidden Web (also known as deep or invisible Web'informations, complexité Keywords: hidden Web, deep Web, databases, information extraction, complexity tel-00198150,versionèse de doctorat en informatique Comprendre le Web caché Understanding the Hidden Web Pierre

  5. EXTERIOR POWERS OF SYMMETRIC BILINEAR FORMS SE'AN MCGARRAGHY

    E-Print Network [OSTI]

    -fold exterior power of V . Then the ring of* * isomorphism classes of finite-dimensional K-vector spaces under]. 3. Exterior and symmetric powers of symmetric bilinear forms Let V be a vector space of dimension EXTERIOR POWERS OF SYMMETRIC BILINEAR FORMS SE

  6. SeRLoc: Robust Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hochberg, Michael

    SeRLoc: Robust Localization for Wireless Sensor Networks LOUKAS LAZOS and RADHA POOVENDRAN University of Washington Many distributed monitoring applications of Wireless Sensor Networks (WSNs) require of Wireless Sensor Networks to determine their location in an untrusted environment, known as the secure

  7. Structural Changes in Vitreous GeSe4 under Pressure

    SciTech Connect (OSTI)

    Skinner L. B.; Parise J.; Benmore, C.J,; Antao, S.; Soignard, E.; Amin, S.A.; Bychkov, E.; Rissi, E. and Yarger, J.L.

    2011-11-21T23:59:59.000Z

    High-energy X-ray diffraction experiments have been performed on GeSe{sub 4} glass up to pressures of 8.6 GPa, and the equation of state has been measured up to 10 GPa. The X-ray structure factors reveal a decrease in the first sharp diffraction peak intensity and broadening with pressure, which signifies a break-up of the intermediate range order in the glass. In contrast, the principal peak in the structure factor shows an increase in intensity and a sharpening with pressure, which is attributed to an increase in extended range order and coherence of the compacted units. The average nearest neighbor coordination number is found to remain constant in GeSe{sub 4} glass (within experimental error) over the pressure range measured. This is in contrast with the gradual increase found in GeSe{sub 2} glass. Rather, in GeSe{sub 4} glass the densification mechanism is shown to be associated with large inward shifts of the second neighbor and higher coordination shells. These features appear as additional correlations at 3.3 and 5.3 {angstrom} in the differences taken between adjacent pair distribution functions with increasing pressure.

  8. con Diabetes Su diabetes s se puede controlar!

    E-Print Network [OSTI]

    Do Well, Be Well con Diabetes ¡Su diabetes sí se puede controlar! Educational programs of the Texas, and the County Commissioners Courts of Texas Cooperating. to develop diabetes self-care skills, to improve eating habits and maintain good nutrition, to increase physical activity, to prevent diabetes complications

  9. KTH Aeronautical and Vehicle Engineering, Teknikringen 8, SE-10044 Stockholm. Phone: +46 70 6522441. E-mail: mabe@kth.se Pg: 1 56 53-9. Bg: 895-9223. VAT: SE202100305401. www.kth.se

    E-Print Network [OSTI]

    Haviland, David

    KTH Aeronautical and Vehicle Engineering, Teknikringen 8, SE-10044 Stockholm. Phone: +46 70 6522441 on Energy Usage of Tracked Taxis Car-like vehicles running on elevated guideways in urban areas or airports vehicles and traditional vehicles, including both measurements and simulations. - Study the rolling

  10. Postal address P.O. Box 118, SE-221 00 LUND Visiting address John Ericssons vg 3 Telephone switchboard +46 46-222 00 00 E-mail outgoing@kansli.lth.se Internet http://www.lth.se

    E-Print Network [OSTI]

    switchboard +46 46-222 00 00 E-mail outgoing@kansli.lth.se Internet http://www.lth.se International Office Telephone switchboard +46 46-222 00 00 E-mail outgoing@kansli.lth.se Internet http://www.lth.se ARGENTINA Sciences (Lahti Yrkeshögskola) Oulun yliopisto Tampereen Teknillinen Korkeakoulu University of Lapland

  11. Reverse Monte Carlo simulation of Se{sub 80}Te{sub 20} and Se{sub 80}Te{sub 15}Sb{sub 5} glasses

    SciTech Connect (OSTI)

    Abdel-Baset, A. M.; Rashad, M. [Physics Department, Faculty of Science , Assiut University, Assiut, P.O. Box 71516 (Egypt); Moharram, A. H. [Faculty of Science, King Abdul Aziz Univ., Rabigh Branch, P.O. Box 433 (Saudi Arabia)

    2013-12-16T23:59:59.000Z

    Two-dimensional Monte Carlo of the total pair distribution functions g(r) is determined for Se{sub 80}Te{sub 20} and Se{sub 80}Te{sub 15}Sb{sub 5} alloys, and then it used to assemble the three-dimensional atomic configurations using the reverse Monte Carlo simulation. The partial pair distribution functions g{sub ij}(r) indicate that the basic structure unit in the Se{sub 80}Te{sub 15}Sb{sub 5} glass is di-antimony tri-selenide units connected together through Se-Se and Se-Te chain. The structure of Se{sub 80}Te{sub 20} alloys is a chain of Se-Te and Se-Se in addition to some rings of Se atoms.

  12. APS/DPP 111207-se 1 University Fusion Association Meeting

    E-Print Network [OSTI]

    University Funding FY 2007-2008 ($ Millions) Program Element FY 2007 FY 2008 Sept Plan Oct Plan · C.0 · HEDLP 1.8 1.9 · Intl, Diagnostics, HBCU, Other 4.3 4.8 · Total University Funding 76.8 78.1 #12;APSAPS/DPP 111207-se 1 University Fusion Association Meeting Orlando, FL November 12, 2007 Stephen

  13. Bi-Se doped with Cu, p-type semiconductor

    DOE Patents [OSTI]

    Bhattacharya, Raghu Nath; Phok, Sovannary; Parilla, Philip Anthony

    2013-08-20T23:59:59.000Z

    A Bi--Se doped with Cu, p-type semiconductor, preferably used as an absorber material in a photovoltaic device. Preferably the semiconductor has at least 20 molar percent Cu. In a preferred embodiment, the semiconductor comprises at least 28 molar percent of Cu. In one embodiment, the semiconductor comprises a molar percentage of Cu and Bi whereby the molar percentage of Cu divided by the molar percentage of Bi is greater than 1.2. In a preferred embodiment, the semiconductor is manufactured as a thin film having a thickness less than 600 nm.

  14. Sanden Vendo America: Proposed Penalty (2014-SE-52002) | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy atLLC - FE DKT. 10-160-LNG -Energy Proposed Penalty (2014-SE-52002)

  15. Structure, nonlinear properties, and photosensitivity of (GeSe2)100-x(Sb2Se3)x glasses

    E-Print Network [OSTI]

    -Anne, J. Charrier, J.-P. Guin, and A. Moréac, "Sputtering and pulsed laser deposition for near- and mid-infrared to increase the n2 from 2 to 710-18 m2 /W for As2S3 glass to 11-3010-18 m2 /W for As2Se3 glass at near-infrared measurements were performed with 10 mg powdered samples, heated up to 450°C at heating rate of 10 °C.min-1

  16. Fluorescence quenching of CdSe quantum dots on graphene

    SciTech Connect (OSTI)

    Guo, Xi Tao; Hua Ni, Zhen, E-mail: zhni@seu.edu.cn; Yan Nan, Hai; Hui Wang, Wen [Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189 (China)] [Department of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189 (China); Yan Liao, Chun [Physics Department, National Photoelectric Technology and Functional Materials and Application of Science and Technology International Cooperation Base, Northwest University, Xi'an 710069 (China)] [Physics Department, National Photoelectric Technology and Functional Materials and Application of Science and Technology International Cooperation Base, Northwest University, Xi'an 710069 (China); Zhang, Yan; Wei Zhao, Wei [Jiangsu Key Laboratory for Design and Fabrication of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189 (China)] [Jiangsu Key Laboratory for Design and Fabrication of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189 (China)

    2013-11-11T23:59:59.000Z

    We studied systematically the fluorescence quenching of CdSe quantum dots (QDs) on graphene and its multilayers, as well as graphene oxide (GO) and reduced graphene oxide (rGO). Raman intensity of QDs was used as a quantitatively measurement of its concentration in order to achieve a reliable quenching factor (QF). It was found that the QF of graphene (?13.1) and its multilayers is much larger than rGO (?4.4), while GO (?1.5) has the lowest quenching efficiency, which suggests that the graphitic structure is an important factor for quenching the fluorescence of QDs. It was also revealed that the QF of graphene is not strongly dependent on its thicknesses.

  17. Effect of selenium deficiency on the thermoelectric properties of n-type In4Se3-x [In subscript 4 Se subscript 3-x] compounds

    E-Print Network [OSTI]

    Zhu, G. H.

    Thermoelectric properties of dense bulk polycrystalline In4Se3?x [In subscript 4 Se subscript 3-x] (x = 0, 0.25, 0.5, 0.65, and 0.8) compounds

  18. Distance Oracles A compact data structure

    E-Print Network [OSTI]

    Shamir, Ron

    ,pi(v)), 1i(k-1) 1 1 k O kn space #12;27 Query answering algorithm w0=u v w1=p1(v)A1 w2=p2(u)A2 w3=p3(v(u) } return (u,w)+ (w,v) Takes O(k) time #12;29 Bound the strech w0=u v w1=p1(v)A1 w2=p2(u)A2 w3=p3(v)A3 2 2

  19. A practical oracle for sequential code parallelization

    E-Print Network [OSTI]

    Garcia, Saturnino; Garcia, Saturnino

    2012-01-01T23:59:59.000Z

    bfs heartwall hotspot kmeans lavaMD lud nn nw pathfinderbfs cfd heartwall hotspot kmeans lavaMD nn nw pathfinder

  20. A practical oracle for sequential code parallelization

    E-Print Network [OSTI]

    Garcia, Saturnino; Garcia, Saturnino

    2012-01-01T23:59:59.000Z

    Bruening, and S. Amarasinghe. Umbra: Efficient and scalablesimilar to that of Umbra [ZBA10a], Kremlin’s overall

  1. Oracle SQL Exercise 1. Executing SQL Commands

    E-Print Network [OSTI]

    Lakshmanan, Laks V.S.

    . The command may extend over several lines and can be broken anywhere there is a space. SQL commands must end*Plus command. List n - displays the nth line of the command SQL> List 2 #12;Run - lists and executes the last in the buffer can be edited using the following commands. Only the current line is affected. c(hange) /oldstring

  2. A practical oracle for sequential code parallelization

    E-Print Network [OSTI]

    Garcia, Saturnino; Garcia, Saturnino

    2012-01-01T23:59:59.000Z

    the first screen in digital media. Copyrights for componentsor the first screen in digital media. Copyrights for com-the first screen in digital media. Copyrights for components

  3. Oracle, Arizona: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio:Opower Social JumpOptimum Energy

  4. MoSe2 thin films synthesized by solid state reactions between Mo and Se J. Pouzet (1) and J. C. Bernede (2)

    E-Print Network [OSTI]

    Boyer, Edmond

    807 MoSe2 thin films synthesized by solid state reactions between Mo and Se thin films J. Pouzet (1 reaction, induced by annealing, between the Mo and Se constituents in thin films form. The films have been thin films annealed under selenium pressure at only 770 K are well crystallized. The electrical

  5. Photoluminescence study of the substitution of Cd by Zn during the growth by atomic layer epitaxy of alternate CdSe and ZnSe monolayers

    SciTech Connect (OSTI)

    Hernández-Calderón, I. [Physics Department,Cinvestav, Ave. IPN2508, 07360, México City, DF. (Mexico); Salcedo-Reyes, J. C. [Thin Films Group, Physics Department, Pontificia Universidad Javeriana, Cr. 7 No. 43-82, Ed. 53, Lab. 404, Bogotá, D.C. (Colombia)

    2014-05-15T23:59:59.000Z

    We present a study of the substitution of Cd atoms by Zn atoms during the growth of alternate ZnSe and CdSe compound monolayers (ML) by atomic layer epitaxy (ALE) as a function of substrate temperature. Samples contained two quantum wells (QWs), each one made of alternate CdSe and ZnSe monolayers with total thickness of 12 ML but different growth parameters. The QWs were studied by low temperature photoluminescence (PL) spectroscopy. We show that the Cd content of underlying CdSe layers is affected by the exposure of the quantum well film to the Zn flux during the growth of ZnSe monolayers. The amount of Cd of the quantum well film decreases with higher exposures to the Zn flux. A brief discussion about the difficulties to grow the Zn{sub 0.5}Cd{sub 0.5}Se ordered alloy (CuAu-I type) by ALE is presented.

  6. The influence of Se pressure on the electronic properties of CuInSe{sub 2} grown under Cu-excess

    SciTech Connect (OSTI)

    Deprédurand, Valérie; Bertram, Tobias; Regesch, David; Henx, Benjamin; Siebentritt, Susanne [Laboratory for Photovoltaics, Physics and Materials Science Research Unit, University of Luxembourg, L-4422 Belvaux (Luxembourg)

    2014-10-27T23:59:59.000Z

    Standard Cu-poor Cu(In,Ga)Se{sub 2} solar cell absorbers are usually prepared under high Se excess since the electronic properties of the absorbers are better if prepared under high Se pressure. However, in CuInSe{sub 2}, grown under Cu-excess, it was found that solar cell properties improve with lowering the Se pressure, mostly because of reduced tunnel contribution to the recombination path. Lower Se pressure during Cu-rich growth leads to increased (112) texture of the absorber films, to better optical film quality, as seen by increased excitonic luminescence and to lower net doping levels, which explains the reduced tunnelling effect. These findings show an opposite trend from the one observed in Cu-poor Cu(In,Ga)Se{sub 2}.

  7. LISTE ELECTORALE BELFORT Bureau Secrtariat SeT NOM PRENOM DEPARTEMENT ETABLISSEMENT

    E-Print Network [OSTI]

    Jeanjean, Louis

    Serge FEMTO-ST ENERGIE UFC AHMED Fayez-Shakil SeT UTBM AIT ALI Kahina SeT UTBM AIT-CHEIK-BIHI Wafaa SeT UTBM AMRANE Sofiane FEMTO-ST ENERGIE UFC ASENSIO SAUTO Joseba FEMTO-ST ENERGIE UFC ATTIA Dhouha SeT UTBM BAERT Jérôme FEMTO-ST ENERGIE UFC BAKKALI Zouheir FEMTO-ST ENERGIE UTBM BASSO Gillian SeT UTBM

  8. Running with Java

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResourcesjobs Running jobs QuickRunning on CarverRunning

  9. Ann bay lodyans 13 / Se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    apral fe le sa a, papa? Papa: Le sa a, se Pari, se manje nan gran restoran, se bwe chanpay, se bel fanm! Pitit: Men, si boul la pa tonbe, papa? Papa: Le sa a, pitit mwen, se lakay, se kasav, se kleren, se manman ou. 8 PAPIYON AK DEMWAZEL Se te... li pre yon fie jon. Tet li foure nan ke fie a, li t ap bwe lawouze ladann, li t ap souse ti poud jon lan. Ti papiyon an te leje, le a te pi leje pase I. Ti papiyon an t ap bat zel li. L6 li fin bwe jouk tan tet li vire ak tout like I te bwe nan...

  10. Leveraging on Easy Java Simulation tool and open source computer simulation library to create interactive digital media for mass customization of high school physics curriculum

    E-Print Network [OSTI]

    Wee, Loo Kang

    2012-01-01T23:59:59.000Z

    This paper highlights the diverse possibilities in the rich community of educators from the Conceptual Learning of Science (CoLoS) and Open Source Physics (OSP) movement to engage, enable and empower educators and students, to create interactive digital media through computer modeling. This concept revolves around a paradigmatic shift towards participatory learning through immersive computer modeling, as opposed to using technology for information transmission. We aim to engage high school educators to professionally develop themselves by creating and customizing simulations possible through Easy Java Simulation (Ejs) and its learning community. Ejs allows educators to be designers of learning environments through modifying source codes of the simulation. Educators can conduct lessons with students' using these interactive digital simulations and rapidly enhance the simulation through changing the source codes personally. Ejs toolkit, its library of simulations and growing community contributed simulation cod...

  11. Thermal Processing Effects on Microstructure and Composition of Cu3SbSe3

    SciTech Connect (OSTI)

    Majsztrik, Paul W [ORNL; Kirkham, Melanie J [ORNL; Garcia Negron, Valerie [Polytechnic University of Puerto Rico (PUPR); Lara-Curzio, Edgar [ORNL; Skoug, Eric [Michigan State University, East Lansing; Morelli, Donald [Michigan State University, East Lansing

    2013-01-01T23:59:59.000Z

    We report on the effects of thermal processing on the microstructure and composition of a system with overall stoichiometry of 3Cu:1Sb:3Se with the aim of producing single-phase Cu3SbSe3. It was found that slowly cooling from the melt produced a multiphase material consisting of Cu2Se and CuSbSe2, but devoid of Cu3SbSe3. Cooling rapidly from the melt resulted in three-phase microstructures consisting of Cu2Se, CuSbSe2, and Cu3SbSe3. Subsequent annealing of the three-phase material between 325 C and 400 C shifted composition towards nearly pure Cu3SbSe3, the target compound of this work. The kinetics of the transformation into Cu3SbSe3 is successfully described using a modified Avrami model, which suggests that diffusion is the rate-controlling step. Values of Young s modulus and hardness, obtained by nanoindentation, are reported for Cu2Se, CuSbSe2, and Cu3SbSe3.

  12. ENG ME/EC/SE 701: Optimal and robust control Fall 2011 ENG ME/EC/SE 701: Optimal and Robust Control, Fall 2011

    E-Print Network [OSTI]

    emphases given on the optimal control portion. Under optimal control, topics will include the linear-domain (or classical) control (at the level of ME 404) and linear system theory (at the level of ME 501ENG ME/EC/SE 701: Optimal and robust control Fall 2011 ENG ME/EC/SE 701: Optimal and Robust Control

  13. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    Lin, Xi

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power considers key technical and economic characteristics of power systems and presents their interaction.e., the safeguard of security and stability in today's complex power systems. Course Overview We review the key

  14. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/4 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/4 Syllabus ENG EC/ME/SE 543 Sustainable Power of power systems and presents their interaction in the design and operation of markets that foster's complex power systems. Course Overview We review the key characteristics of Electric Power Transmission

  15. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power. Under this premise, the course considers key technical and economic characteristics of power systems efficiency while allowing for the safeguard of security and stability in today's complex power systems

  16. ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 ENG EC/ME/SE 543 Sustainable Power Systems: Planning, Operation, and Markets

    E-Print Network [OSTI]

    ENG EC/ME/SE 543 Sustainable Power Systems Page 1/5 Syllabus ENG EC/ME/SE 543 Sustainable Power of power systems and presents their interaction in the design and operation of markets that foster systems. Course Overview We review the key characteristics of Electric Power Transmission and Distribution

  17. Mechanisms of the Wurtzite to Rocksalt Transformation in CdSe Nanocrystals Michael Grunwald,1

    E-Print Network [OSTI]

    Rabani, Eran

    Mechanisms of the Wurtzite to Rocksalt Transformation in CdSe Nanocrystals Michael Gru¨nwald,1 Eran transition from the four-coordinate wurtzite to the six-coordinate rocksalt structure in CdSe nanocrystals wurtzite structure to the six-coordinate rocksalt structure in CdSe is strongly influenced by crystal size

  18. DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE

    E-Print Network [OSTI]

    Sites, James R.

    i DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT Submitted ENTITLED `ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT' BE ACCEPTED(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT The demand for alternative sources of energy is rapidly

  19. Cu(In,Ga)Se2based Photovoltaics: Challenges and Opportunities

    E-Print Network [OSTI]

    Firestone, Jeremy

    % Different companies, processes, substrates Substrate Mo Cu(InGa)Se2 buffer TCO Cu(InGa)Se2 Solar Cells #12-evaporation using 3-stage process (ZSW, NREL) Reaction of sputtered precursors (Solar Frontier) From pilot; High optical absorption Unique properties for solar cells Compositional tolerance Cu(InGa)Se2 Thin

  20. DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Submitted by Markus Gloeckler PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Thin-film solar cells have the potential to be an important

  1. Observation and Measurement of Se-79 in SRS High-Level Tank Fission Product Waste

    SciTech Connect (OSTI)

    Dewberry, R.A.

    2000-08-21T23:59:59.000Z

    The authors report the first observation of confirmed Se-79 activity in Savannah River Site high level fission product waste. Se-79 was measured after a seven step chemical treatment to remove interfering activity from Cs-137, Sr-90, and plutonium at levels 105 times higher than the observed Se-79 content and to remove Tc-99 at levels 300 times higher than observed Se-79. Se-79 was measured by liquid scintillation beta-decay counting after specific tests to eliminate uncertainties from possible contributions from Tc-99, Pm-147, Sm-151, Zr-93, or Pu-241, whose beta-decay spectra could appear similar to that of Se-79, and whose content would be expected at levels near or greater than Se-79.

  2. High-Pressure Synthesis and Structure Determination of K6(SeO4)(SeO5), The First Potassium Orthoselenate(VI)

    SciTech Connect (OSTI)

    Orosel,D.; Dinnebeier, R.; Jansen, M.

    2006-01-01T23:59:59.000Z

    The authors report on the first synthesis of a potassium orthoselenate(VI), K{sub 6}(SeO{sub 4})(SeO{sub 5}), and the structure determination from synchrotron powder diffraction data. The title compound crystallizes in the tetragonal space group P4{sub 1}2{sub 1}2 with a = 8.1259(1) {angstrom}, c = 17.4953(2) {angstrom}, V = 1155.21(2) {angstrom}{sup 3}, and Z = 4. Selenium displays two different complex anions, tetrahedral SeO{sub 4}{sup 2-} and trigonal-bipyramidal SeO{sub 5}{sup 4-}. When the formula is reduced to A{sub 3}B, the spatial arrangement of the constituting building units can be derived from the Li{sub 3}Bi type of structure.

  3. tutimura@mist.i.u-tokyo.ac.jp kaneko@ipl.t.u-tokyo.ac.jp

    E-Print Network [OSTI]

    Murota, Kazuo

    /12/01) · Java http://www.y-adagio.com/public/standards/tr_javalang/ · Java API http://java.sun.com/j2se/1.4/ja/docs/ja/apiString() · ­ p.27/33 #12;API, · · import · import java.lang.*; import java.util.ArrayList; // import java.util.*; ... java.util.ArrayList a; ArrayList b; // import ­ p.28/33 #12;JavaDoc · HTML · Java API

  4. ADVANCES IN SE-79 ANALYSES ON SAVANNAH RIVER SITE RADIOACTIVE WASTE MATRICES

    SciTech Connect (OSTI)

    Diprete, D; C Diprete, C; Ned Bibler, N; Cj Bannochie, C; Michael Hay, M

    2009-03-16T23:59:59.000Z

    Waste cleanup efforts underway at the United States Department of Energy's (DOE) Savannah River Site (SRS) in South Carolina, as well as other DOE nuclear sites, have created a need to characterize {sup 79}Se in radioactive waste inventories. Successful analysis of {sup 79}Se in high activity waste matrices is challenging for a variety of reasons. As a result of these unique challenges, the successful quantification of {sup 79}Se in the types of matrices present at SRS requires an extremely efficient and selective separation of {sup 79}Se from high levels of interfering radionuclides. A robust {sup 79}Se radiochemical separation method has been developed at the Savannah River National Laboratory (SRNL) which is routinely capable of successfully purifying {sup 79}Se from a wide range of interfering radioactive species. In addition to a dramatic improvements in the Kd, ease, and reproducibility of the analysis, the laboratory time has been reduced from several days to only 6 hours.

  5. Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals

    SciTech Connect (OSTI)

    Ma, Wanli; Luther, Joseph; Zheng, Haimei; Wu, Yue; Alivisatos, A. Paul

    2009-02-05T23:59:59.000Z

    We report solar cells based on highly confined nanocrystals of the ternary compound PbSxSe1-x. Crystalline, monodisperse alloyed nanocrystals are obtained using a one-pot, hot injection reaction. Rutherford back scattering and energy filtered transmission electron microscopy suggest that the S and Se anions are uniformly distributed in the alloy nanoparticles. Photovoltaic devices made using ternary nanoparticles are more efficient than either pure PbS or pure PbSe based nanocrystal devices.

  6. Pressure-induced phase transformation of In2Se3 Anya M. Rasmussen,1

    E-Print Network [OSTI]

    McCluskey, Matthew

    13 February 2013) In2Se3 has potential as a phase-change material for memory applications and the defect wurtzite c phase.1 Recently, In2Se3 has received attention as a phase-change material that could be used in phase-change random access memory (PRAM) applications.2,3 In2Se3 may be preferable over Ge2Sb2

  7. Synthesis and Crystal Structure Study of 2’-Se-Adenosine-Derivatized DNA

    SciTech Connect (OSTI)

    Sheng, J.; Salon, J; Gan, J; Huang, Z

    2010-01-01T23:59:59.000Z

    The selenium derivatization of nucleic acids is a novel and promising strategy for 3D structure determination of nucleic acids. Selenium can serve as an excellent anomalous scattering center to solve the phase problem, which is one of the two major bottlenecks in macromolecule X-ray crystallography. The other major bottleneck is crystallization. It has been demonstrated that the incorporated selenium functionality at the 2'-positions of the nucleosides and nucleotides is stable and does not cause significant structure perturbation. Furthermore, it was observed that the 2'-Se-derivatization could facilitate crystallization of oligonucleotides with fast crystal growth and high diffraction quality. Herein, we describe a convenient synthesis of the 2'-Se-adenosine phosphoramidite, and report the first synthesis and X-ray crystal structure determination of the DNA containing the 2'-Se-A derivatization. The 3D structure of 2'-Se-A-DNA decamer [5'-GTACGCGT(2'-Se-A)C-3']{sub 2} was determined at 1.75 {angstrom} resolution, the 2'-Se-functionality points to the minor groove, and the Se-modified and native structures are virtually identical. Moreover, we have observed that the 2'-Se-A modification can greatly facilitate the crystal growth with high diffraction quality. In conjunction with the crystallization facilitation by the 2'-Se-U and 2'-Se-T, this novel observation on the 2'-Se-A functionality suggests that the 2'-Se moiety is sole responsible for the crystallization facilitation and the identity of nucleobases does not influence the crystal growth significantly.

  8. SciTech Connect: A Solution for Solution-Produced [beta]-FeSe...

    Office of Scientific and Technical Information (OSTI)

    A Solution for Solution-Produced beta-FeSe: Elucidating and Overcoming Factors that Prevent Superconductivity Citation Details In-Document Search Title: A Solution for...

  9. Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals

    E-Print Network [OSTI]

    Alivisatos, A. Paul

    2009-01-01T23:59:59.000Z

    performance. The x-axis represents composition change from pure PbSe, to pure PbS, versus various photovoltaic

  10. Photovoltaic performance of ultra-small PbSe quantum dots

    E-Print Network [OSTI]

    Ma, Wanli

    2014-01-01T23:59:59.000Z

    Photovoltaic performance of ultra-small PbSe quantum dotssize on the photovoltaic performance of simple Schottky-typeconfinement on the photovoltaic performance, we adopted

  11. Electrical Transport of Topological Insulator-Bi2Se3 and Thermoelectric Properties of Graphene

    E-Print Network [OSTI]

    WEI, PENG

    2011-01-01T23:59:59.000Z

    tapes are detached to exfoliate the crystal into thinnercan also be utilized to exfoliate Bi 2 Se 3 on top of SrTiO

  12. Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals

    E-Print Network [OSTI]

    Alivisatos, A. Paul

    2009-01-01T23:59:59.000Z

    Photovoltaic Devices Employing Ternary PbS x Se 1-xalloy nanoparticles. Photovoltaic devices made using ternaryInformation for Efficient Photovoltaic Devices Employing

  13. Photovoltaic performance of ultra-small PbSe quantum dots

    E-Print Network [OSTI]

    Ma, Wanli

    2014-01-01T23:59:59.000Z

    Y; Alivisatos, AP, Photovoltaic Devices Employing TernaryPhotovoltaic performance of ultra-small PbSe quantum dotsquantum dot, solar cell, photovoltaic, quantum size effect

  14. Phase diagram of the CulnSe{sub 2}-CuGaSe{sub 2} pseudobinary system studied by combined ab initio density functional theory and thermodynamic calculation

    SciTech Connect (OSTI)

    Xue, H. T.; Tang, F. L., E-mail: tfl03@mails.tsinghua.edu.cn [State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050 (China); Science and Technology on Surface Engineering Laboratory, Lanzhou Institute of Physics, Lanzhou 730000 (China); Lu, W. J.; Li, X. K.; Zhang, Y. [State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050 (China); Feng, Y. D. [Science and Technology on Surface Engineering Laboratory, Lanzhou Institute of Physics, Lanzhou 730000 (China)

    2014-08-07T23:59:59.000Z

    The phase diagram of the CuInSe{sub 2}-CuGaSe{sub 2} pseudobinary system was determined using a combination of special quasirandom structure approach, ab initio density functional theory calculations, and thermodynamic modelling. It is shown that the CuIn{sub 1?x}Ga{sub x}Se{sub 2} solution phase has a tendency to phase separation at low temperature. The calculated consolute temperature is 485?K. It is found that both the binodal and spinodal curves are significantly asymmetric and on both curves there are a local maximum and a local minimum, which have not been reported in the previous studies. Our phase diagram can well explain the finding that the inhomogeneity of CuIn{sub 0.25}Ga{sub 0.75}Se{sub 2} is higher than that of CuIn{sub 0.75}Ga{sub 0.25}Se{sub 2} at the same temperature, while the previous phase diagrams cannot. Hence, our phase diagram should be more reliable and applicable.

  15. Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses

    E-Print Network [OSTI]

    Osterloh, Frank

    -iodopropionic acid treated LiMo3Se3 nanowire bundles with oleic acid-stabilized Fe3O4 nanoparticles of 2.8, 5Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses Frank E. Osterloh,*, Hiroki A scaleable chemical approach to functional nanoscale analogues of the magnetic compasses in magnetotactic

  16. Photovoltaic cells fabricated by electrophoretic deposition of CdSe nanocrystals

    E-Print Network [OSTI]

    Smith, Nathanael J.

    Photovoltaic cells fabricated by electrophoretic deposition of CdSe nanocrystals Nathanael J. Smith Electrophoretic deposition was used to deposit CdSe nanocrystals on TiO2 for use in photovoltaic cells formed. A solar cell constructed using electrophoretic deposition exhibited a photovoltaic response from

  17. Testing models for the Messinian salinity crisis: The Messinian record in Almera, SE Spain

    E-Print Network [OSTI]

    Riding, Robert

    Testing models for the Messinian salinity crisis: The Messinian record in Almería, SE Spain Juan C Fuentenueva s.n., Universidad de Granada, 18002 Granada, Spain b School of Earth, Ocean and Planetary Sciences, SE Spain, display excellent exposures of Messinian (Late Miocene) sequences. The Sorbas, Almería

  18. Rapid degradation of CdSe/ZnS colloidal quantum dots exposed to gamma irradiation

    E-Print Network [OSTI]

    New Mexico, University of

    Rapid degradation of CdSe/ZnS colloidal quantum dots exposed to gamma irradiation Nathan J. Withers are reported. Optical degradation is evaluated by tracking the dependence of photoluminescence intensity on irradiation dose. CdSe/ZnS quantum dots show poor radiation hardness, and severely degrade after less than 20

  19. Ultrathin Topological Insulator Bi2Se3 Nanoribbons Exfoliated by Atomic Force

    E-Print Network [OSTI]

    Cui, Yi

    Ultrathin Topological Insulator Bi2Se3 Nanoribbons Exfoliated by Atomic Force Microscopy Seung Sae, Stanford University, Stanford, California 94305 ABSTRACT Ultrathin topological insulator nanostructures), the layered bismuth selenide (Bi2Se3), a single Dirac-cone topological insulator with a large bulk gap, can

  20. Development of a Low Cost Insulated Foil Substrate for Cu(InGaSe)2 Photovoltaics

    SciTech Connect (OSTI)

    ERTEN ESER

    2012-01-22T23:59:59.000Z

    The project validated the use of stainless steel flexible substrate coated with silicone-based resin dielectric, developed by Dow Corning Corporation, for Cu(InGa)Se2 based photovoltaics. The projects driving force was the high performance of Cu(InGa)Se2 based photovoltaics coupled with potential cost reduction that could be achieved with dielectric coated SS web substrate.

  1. Thermoelectric Properties of p-Type PbSe Nanowires Wenjie Liang1,3

    E-Print Network [OSTI]

    Yang, Peidong

    Thermoelectric Properties of p-Type PbSe Nanowires Wenjie Liang1,3 , Oded Rabin1,4 , Allon I-009-9039-2 Research Article Address correspondence to p_yang@berkeley.edu ABSTRACT The thermoelectric properties to 300 K. Thermal annealing of the PbSe nanowires allowed their thermoelectric properties

  2. CdSe Nanocrystals using the Oleic Acid Synthesis Nathanael J. Smith, Fall 2008

    E-Print Network [OSTI]

    Smith, Nathanael J.

    #12;4 M Se in TPB Take 15 g of Se powder in an appropriately sized glass bottle (it must hold at least the lid on the bottle to stop the TBP from evaporating). Perodically give the contents of the bottle

  3. Charge transport in mixed CdSe and CdTe colloidal nanocrystal films

    E-Print Network [OSTI]

    Bawendi, Moungi G.

    We report the influence of trap states on charge transport through films of mixed CdTe and CdSe nanocrystals (NCs) between lateral electrodes, through layered films of CdTe and CdSe NCs in a layered geometry, and through ...

  4. Superconductivity in Strong Spin Orbital Coupling Compound Sb2Se3

    E-Print Network [OSTI]

    Shen, Guoyin

    Superconductivity in Strong Spin Orbital Coupling Compound Sb2Se3 P. P. Kong1 , F. Sun1,3 , L. Y induce Sb2Se3 into a topological nontrivial state. Here, we report on the discovery of superconductivity superconductive at high pressures above 10 GPa proceeded by a pressure induced insulator to metal like transition

  5. Phase equilibria in the quasi-ternary system Ag{sub 2}Se–Ga{sub 2}Se{sub 3}–In{sub 2}Se{sub 3} and physical properties of (Ga{sub 0.6}In{sub 0.4}){sub 2}Se{sub 3}, (Ga{sub 0.594}In{sub 0.396}Er{sub 0.01}){sub 2}Se{sub 3} single crystals

    SciTech Connect (OSTI)

    Ivashchenko, I.A., E-mail: inna.ivashchenko@mail.ru [Department of Inorganic and Physical Chemistry, Eastern European National University, Voli Ave 13, Lutsk 43025 (Ukraine); Danyliuk, I.V.; Olekseyuk, I.D. [Department of Inorganic and Physical Chemistry, Eastern European National University, Voli Ave 13, Lutsk 43025 (Ukraine); Halyan, V.V. [Department of General Physics, Eastern European National University, Voli Ave 13, Lutsk 43025 (Ukraine)

    2014-02-15T23:59:59.000Z

    The quasi-ternary system Ag{sub 2}Se–Ga{sub 2}Se{sub 3}–In{sub 2}Se{sub 3} was investigated by differential thermal, X-ray phase, X-ray structure, microstructure analysis and microhardness measurements. Five quasi-binary phase diagrams, six polythermal sections, isothermal section at 820 K and the liquidus surface projection were constructed. The character and temperature of the invariant processes were determined. The specific resistance of the single crystals (Ga{sub 0.6}In{sub 0.4}){sub 2}Se{sub 3}, (Ga{sub 0.594}In{sub 0.396}Er{sub 0.01}){sub 2}Se{sub 3} was measured, 7.5×10{sup 5} and 3.15×10{sup 5} ? m, respectively, optical absorption spectra in the 600–1050 nm range were recorded at room temperature, and the band gap energy was estimated which is 1.95±0. 01 eV for both samples. - Graphical abstract: The article reports for the first time the investigated liquidus surface projection of the Ag{sub 2}Se–Ga{sub 2}Se{sub 3}–In{sub 2}Se{sub 3} system and isothermal section at 820 K of the system. Five phase diagrams, six polythermal sections, isothermal section at 820 K and the liquidus surface projection were built at the first time. The existence of the large region of the solid solutions based on AgIn{sub 5}Se{sub 8}, Ga{sub 2}Se{sub 3} and AgGa{sub 1?x}In{sub x}Se{sub 2} was investigated. The existence of two ternary phases was established in the Ga{sub 2}Se{sub 3}–In{sub 2}Se{sub 3} system. Two single crystals (Ga{sub 0.6}In{sub 0.4}){sub 2}Se{sub 3}, (Ga{sub 0.594}In{sub 0.396}Er{sub 0.01}){sub 2}Se{sub 3} were grown and some of optical properties of them were studied at first time. Display Omitted - Highlights: • Liquidus surface projection was built for Ag{sub 2}Se–Ga{sub 2}Se{sub 3}–In{sub 2}Se{sub 3} system. • Solid solution ranges of AgIn{sub 5}Se{sub 8}, Ga{sub 2}Se{sub 3} and AgGa{sub 1?x}In{sub x}Se{sub 2} were investigated. • Two single crystals (Ga{sub 0.6}In{sub 0.4}){sub 2}Se{sub 3}, (Ga{sub 0.594}In{sub 0.396}Er{sub 0.01}){sub 2}Se{sub 3} were grown. • Some optical properties of these single crystals were studied.

  6. SE HAN FINALIZADO LOS PREPARATIVOS PARA LA CONFERENCIA NACIONAL DE JUSTICIA MEDIOAMBIENTAL Y PROGRAMA DE FORMACIÓN 2013

    Broader source: Energy.gov [DOE]

    La National Environmental Justice Conference, Inc. (Conferencia de Justicia Medioambiental) se prepara para otro exitoso acontecimiento, ya que se aproxima la Conferencia Nacional de Justicia...

  7. Schreibender Quelltextanalyse String

    E-Print Network [OSTI]

    Arndt, Holger

    Das Package java.net 15.8 Sockets 15­21 1 15.7.4 Wiederverwendbarkeit von Applets ­ e r als Java einfache Client­Server­Anwendung /etc/services ei c ie t ei c c et JavaNet/Socket/MeinEchoClient.java 21 c et ei c c et ne c et st JavaNet/Socket/MeinEchoSe ve .java 2 erver c et server c et ne erver c et 22

  8. Diamond-machined ZnSe immersion grating for NIR high-resolution spectroscopy

    SciTech Connect (OSTI)

    Ikeda, Y; Kobayashi, N; Kuzmenko, P J; Little, S L; Yasui, C; Kondo, S; Minami, A; Motohara, K

    2008-07-25T23:59:59.000Z

    ZnSe immersion gratings (n {approx} 2.45) provide the possibility of high-resolution spectroscopy for the near-infrared (NIR) region. Since ZnSe has a lower internal attenuation than other NIR materials, it is most suitable for immersion grating, particularly in short NIR region (0.8-1.4 {micro}m). We are developing an extremely high-resolution spectrograph with {lambda}/{Delta}{lambda} = 100,000, WINERED, customized for the short NIR region, using ZnSe (or ZnS) immersion grating. However, it had been very difficult to make fine grooves on ZnSe substrate with a small pitch of less than 50 {micro}m because ZnSe is a soft/brittle material. We have overcome this problem and successfully machined sharp grooves with fine pitch on ZnSe substrates by nano precision fly-cutting technique at LLNL. The optical testing of the sample grating with HeNe laser shows an excellent performance: the relative efficiency more than 87.4 % at 0.633 {micro}m for a classical grating configuration. The diffraction efficiency when used as an immersion grating is estimated to be more than 65 % at 1 {micro}m. Following this progress, we are about to start machining a grating on a large ZnSe prism with an entrance aperture of 23mm x 50mm and the blaze angle of 70{sup o}.

  9. Hydrothermal synthesis, structure, and magnetic properties of Pu(SeO{sub 3}){sub 2}

    SciTech Connect (OSTI)

    Bray, Travis H. [Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849 (United States); Skanthakumar, S.; Soderholm, L. [Chemistry Division, Argonne National Laboratory, Argonne, IL 60439 (United States); Sykora, Richard E. [Department of Chemistry, University of South Alabama, Mobile, AL 36688 (United States); Haire, Richard G. [Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Albrecht-Schmitt, Thomas E. [Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849 (United States)], E-mail: albreth@auburn.edu

    2008-03-15T23:59:59.000Z

    The reaction between PuO{sub 2} and SeO{sub 2} under mild hydrothermal conditions results in the formation of Pu(SeO{sub 3}){sub 2} as brick-red prisms. This compound adopts the Ce(SeO{sub 3}){sub 2} structure type, and consists of one-dimensional chains of edge-sharing [PuO{sub 8}] distorted bicapped trigonal prisms linked by [SeO{sub 3}] units into a three-dimensional network. Crystallographic data: Pu(SeO{sub 3}){sub 2}, monoclinic, space group P2{sub 1}/n, a=6.960(1) A, b=10.547(2) A, c=7.245(1) A, {beta}=106.880(9){sup o}, V=508.98(17) A{sup 3}, Z=4 (T=193 K), R(F)=2.92% for 83 parameters with 1140 reflections with I>2{sigma}(I). Magnetic susceptibility data for Pu(SeO{sub 3}){sub 2} are linear from 35 to 320 K and yield an effective moment of 2.71(5) {mu}{sub B} and a Weiss constant of -500(5) K. - Graphical abstract: A depiction of the three-dimensional structure of Pu(SeO{sub 3}){sub 2} formed from the interconnection of one-dimensional chains of edge-sharing PuO{sub 8} dodecahedra by selenite anions.

  10. INCOSE Systems Engineering Handbook v3.2: Improving the Process for SE Practitioners

    SciTech Connect (OSTI)

    R. Douglas Hamelin; David D. Walden; Michael E. Krueger

    2010-07-01T23:59:59.000Z

    The INCOSE Systems Engineering Handbook is the official INCOSE reference document for understanding systems engineering (SE) methods and conducting SE activities. Over the years, the Handbook has evolved to accommodate advances in the SE discipline and now serves as the basis for the Certified Systems Engineering Professional (CSEP) exam. Due to its evolution, the Handbook had become somewhat disjointed in its treatment and presentation of SE topics and was not aligned with the latest version of International Organization for Standardization (ISO)/International Electrotechnical Commission (IEC) 15288:2008, Systems and Software Engineering. As a result, numerous inconsistencies were identified that could confuse practitioners and directly impact the probability of success in passing the CSEP exam. Further, INCOSE leadership had previously submitted v3.1 of the Handbook to ISO/IEC for consideration as a Technical Report, but was told that the Handbook would have to be updated to conform with the terminology and structure of new ISO/IEC15288:2008, Systems and software engineering, prior to being considered. The revised INCOSE Systems Engineering Handbook v3.2 aligns with the structure and principles of ISO/IEC 15288:2008 and presents the generic SE life-cycle process steps in their entirety, without duplication or redundancy, in a single location within the text. As such, the revised Handbook v3.2 serves as a comprehensive instructional and reference manual for effectively understanding SE processes and conducting SE and better serves certification candidates preparing for the CSEP exam.

  11. Characterization of ZnSe scintillating bolometers for Double Beta Decay

    E-Print Network [OSTI]

    C. Arnaboldi; S. Capelli; O. Cremonesi; L. Gironi; M. Pavan; G. Pessina; S. Pirro

    2010-06-30T23:59:59.000Z

    ZnSe scintillating bolometers are good candidates for future Double Beta Decay searches, because of the 82Se high Q-value and thanks to the possibility of alpha background rejection on the basis of the scintillation signal. In this paper we report the characteristics and the anomalies observed in an extensive study of these devices. Among them, an unexpected high emission from alpha particles, accompanied with an unusual pattern of the light vs. heat scatter plot. The perspectives for the application of this kind of detectors to search for the Neutrinoless Double Beta Decay of 82Se are presented.

  12. Optimal packing size of non-ligated CdSe nanoclusters for microstructure synthesis

    SciTech Connect (OSTI)

    Tefera, Anteneh G.; Mochena, Mogus D. [Department of Physics, Florida A and M University, Tallahassee, Florida 32307 (United States); Johnson, Elijah [School of Environment, Florida A and M University, Tallahassee, Florida 32307 (United States); Dickerson, James [Department of Physics, Brown University, Providence, Rhode Island 02912 (United States)

    2014-09-14T23:59:59.000Z

    Structural and electrostatic properties of nanoclusters of CdSe of diameter 1–2?nm are studied with first principle calculations to determine the optimal size for synthesizing microstructures. Based on robustness of the core structure, i.e., the retention of tetrahedral geometry, hexagonal ring structure, and overall wu{sup ¨}rtzite structure to surface relaxations, we conclude that nanoclusters of ?2?nm diameter are the best candidates to form a dense microstructure with minimal interstitial space. Se-terminated surfaces retain a zigzag structure as Se atoms are pulled out and Cd atoms are pulled in due to relaxation, therefore, are best suited for inter-nanocluster formations.

  13. A comparative transport study of Bi{sub 2}Se{sub 3} and Bi{sub 2}Se{sub 3}/yttrium iron garnet

    SciTech Connect (OSTI)

    Jiang, Zilong; Tang, Chi; Shi, Jing [Department of Physics and Astronomy, University of California, Riverside, California 92521 (United States); Katmis, Ferhat; Wei, Peng; Moodera, Jagadeesh S. [Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2014-06-02T23:59:59.000Z

    Bilayers of 20 quintuple layer Bi{sub 2}Se{sub 3} on 30?nm thick yttrium iron garnet (YIG) have been grown with molecular beam epitaxy in conjunction with pulsed laser deposition. The presence of the ferri-magnetic insulator YIG causes additional scattering to the surface states of the Bi{sub 2}Se{sub 3} topological insulator layer, as indicated by the temperature dependence of the resistivity. From the two-channel analysis of the Hall data, we find that the surface contribution in the bilayer samples is greatly reduced. Furthermore, the weak antilocalization effect from the surface states is clearly suppressed due to the presence of the YIG layer.

  14. Hidden Superlattice in Tl2(SC6H4S) and Tl2(SeC6H4Se) Solved from Powder X-ray Diffraction

    SciTech Connect (OSTI)

    K Stone; D Turner; M Singh; T Vaid; P Stephens

    2011-12-31T23:59:59.000Z

    The crystal structures of the isostructural title compounds poly[({mu}-benzene-1,4-dithiolato)dithallium], Tl{sub 2}(SC{sub 6}H{sub 4}S), and poly[({mu}-benzene-1,4-diselenolato)dithallium], Tl{sub 2}(SeC{sub 6}H{sub 4}Se), were solved by simulated annealing from high-resolution synchrotron X-ray powder diffraction. Rietveld refinements of an initial structure with one formula unit per triclinic cell gave satisfactory agreement with the data, but led to a structure with impossibly close non-bonded contacts. A disordered model was proposed to alleviate this problem, but an alternative supercell structure leads to slightly improved agreement with the data. The isostructural superlattice structures were confirmed for both compounds through additional data collection, with substantially better counting statistics, which revealed the presence of very weak superlattice peaks not previously seen. Overall, each structure contains Tl-S or Tl-Se two-dimensional networks, connected by phenylene bridges. The sulfur (or selenium) coordination sphere around each thallium is a highly distorted square pyramid or a 'see-saw' shape, depending upon how many Tl-S or Tl-Se interactions are considered to be bonds. In addition, the two compounds contain pairs of Tl{sup I} ions that interact through a closed-shell 'thallophilic' interaction: in the sulfur compound there are two inequivalent pairs of Tl atoms with Tl-Tl distances of 3.49 and 3.58 {angstrom}, while in the selenium compound those Tl-Tl interactions are at 3.54 and 3.63 {angstrom}.

  15. Enhanced Thermoelectric Power and Electronic Correlations in RuSe2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wang, Kefeng [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Wang, Aifeng [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Tomic, A. [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Wang, Limin [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Abeykoon, A.M. Milinda [Brookhaven National Laboratory (BNL), Upton, NY (United States). Photon Sciences Directorate; Dooryhee, E. [Brookhaven National Laboratory (BNL), Upton, NY (United States). Photon Sciences Directorate; Billinge, S. J.L. [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Columbia Univ., New York, NY (United States); Petrovic, C. [Brookhaven National Laboratory (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

    2015-04-01T23:59:59.000Z

    We report the electronic structure, electric and thermal transport properties of Ru1-xIrxSe2 (x ? 0:2). RuSe2 is a semiconductor that crystallizes in a cubic pyrite unit cell. The Seebeck coefficient of RuSe2 exceeds -200 ?#22;V/K around 730 K. Ir substitution results in the suppression of the resistivity and the Seebeck coefficient, suggesting the removal of the peaks in density of states near the Fermi level. Ru0.8Ir0.2Se2 shows a semiconductor-metal crossover at about 30 K. The magnetic field restores the semiconducting behavior. Our results indicate the importance of the electronic correlations in enhanced thermoelectricity of RuSb2.

  16. Evidence for Gassy Sediments on the Inner Shelf of SE Korea From Geoacoustic Properties

    E-Print Network [OSTI]

    , Gwang H. Lee 6 , Young K. Seo 5 1 * Hawaii Natural Energy Institute, University of Hawaii, P.O.S.T. Bldg Properties; Attenuation; Biodegradation; Bubbles; Core Analysis; Gassy Sediments; SE Korea Shelf #12

  17. Electrical Transport of Topological Insulator-Bi2Se3 and Thermoelectric Properties of Graphene

    E-Print Network [OSTI]

    WEI, PENG

    2011-01-01T23:59:59.000Z

    Hall effect and topological insulators. Phys Today Klitzing,L. & Mele, E. J. Topological insulators in three dimensions.Zhang, H. J. et al. Topological insulators in Bi 2 Se 3 , Bi

  18. Polarization dependent photocurrents in thin films of the topological insulator Bi?Se?

    E-Print Network [OSTI]

    Lau, Claudia (Claudia M.)

    2012-01-01T23:59:59.000Z

    Topological insulators are a new class of three-dimensional quantum materials whose interior or bulk is an insulator but whose surface is a conductor. Bi?Se? is a prototypical topological insulator that physicists at MIT ...

  19. UNIDAD GUADALAJARA La Unidad Guadalajara del Cinvestav se inici el 14 de noviembre de 1988 con

    E-Print Network [OSTI]

    años de distancia, la Unidad Guadalajara se ha convertido en uno de los grupos de ingeniería eléctrica, Canadá, y Japón. La Unidad Guadalajara del Cinvestav tiene cinco grupos de trabajo que desa- rrollan

  20. UNIDAD GUADALAJARA La Unidad Guadalajara del Cinvestav se inici el 14 de noviembre de 1988 con

    E-Print Network [OSTI]

    años de distancia, la Unidad Guadalajara se ha convertido en uno de los grupos de ingeniería eléctrica Estados Unidos, Canadá, y Japón. La Unidad Guadalajara del Cinvestav tiene cinco grupos de trabajo que

  1. WEATHERIZATION INDUSTRIES SAVE ENERGY ST SE SALEM, OREGON 97301 (503) 5691381 WEATHERIZATIONALLIES@GMAIL.COM

    E-Print Network [OSTI]

    WEATHERIZATION INDUSTRIES SAVE ENERGY 565 21ST ST SE SALEM, OREGON 97301 · (503) 5691381 · WEATHERIZATIONALLIES@GMAIL.COM COMMENTS ON ACHIEVABLE SAVINGS: A RETROSPECTIVE LOOK AT THE NORTHWEST POWER AND CONSERVATION COUNCIL'S CONSERVATION PLANNING ASSUMPTIONS Weatherization Industries Save Energy (WISE

  2. Structure, Magnetism, and Transport of CuCr2Se4 Thin Films

    E-Print Network [OSTI]

    2008-01-01T23:59:59.000Z

    Structure, Magnetism, and Transport of CuCr 2 Se 4 Thindichroism shows that the magnetism persists to the surfacesuch as the nature of magnetism at surfaces and interfaces.

  3. Phonon properties of BaFe?X? (X=S, Se) spin ladder compounds

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Popovicq, Z. V.; Petrovic, C.; Scepanovic, M.; Lazarevic, N.; Opacic, M.; Radonjic, M. M.; Tanaskovic, D.; Lei, Hechang

    2015-02-01T23:59:59.000Z

    We present the Raman scattering spectra of the S=2 spin ladder compounds BaFe?X? (X=S,Se) in a temperature range between 20 and 400 K. Although the crystal structures of these two compounds are both orthorhombic and very similar, they are not isostructural. The unit cell of BaFe?S? (BaFe?Se?) is base-centered Cmcm (primitive Pnma), giving 18 (36) modes to be observed in the Raman scattering experiment. We have detected almost all Raman active modes, predicted by factor group analysis, which can be observed from the cleavage planes of these compounds. Assignment of the observed Raman modes of BaFe?S(Se)? is supported by themore »lattice dynamics calculations. The antiferromagnetic long-range spin ordering in BaFe?Se? below TN=255K leaves a fingerprint both in the A1g and B3g phonon mode linewidth and energy.« less

  4. Time resolved fluorescence of CdSe nanocrystals using single molecule spectroscopy

    E-Print Network [OSTI]

    Fisher, Brent R

    2005-01-01T23:59:59.000Z

    A wide variety of spectroscopic studies of CdSe nanocrystals (NCs) are presented in this thesis, all studying some aspect of the temporal evolution of NC fluorescence tinder different conditions. In particular the methods ...

  5. Nanofabrication, Plasmon Enhanced Fluorescence and Photo-oxidation Kinetics of CdSe Nanoparticles

    E-Print Network [OSTI]

    Chen, Jixin

    2011-08-08T23:59:59.000Z

    nanosphere (left) and nanoprism (right) solutions and (B) their corresponding absorption spectra displayed in yellow and green line, respectively. (C) TEM image of photoinduced Ag nanoprisms. The inserts show the electron diffraction analysis... this synthetic method, typical commercial CdSe nanocrystals have a size deviation less than 10% and narrow emission spectra with peak widths at half height of around 30- 50 nm for small ones that have 4 nm in diameter. The color changes of the CdSe quantum...

  6. Unique Challenges Accompany Thick-Shell CdSe/nCdS (n > 10) Nanocrystal Synthesis

    SciTech Connect (OSTI)

    Guo, Y; Marchuk, K; Abraham, R; Sampat, S; Abraham, R.; Fang, N; Malko, AV; Vela, J

    2011-12-23T23:59:59.000Z

    Thick-shell CdSe/nCdS (n {ge} 10) nanocrystals were recently reported that show remarkably suppressed fluorescence intermittency or 'blinking' at the single-particle level as well as slow rates of Auger decay. Unfortunately, whereas CdSe/nCdS nanocrystal synthesis is well-developed up to n {le} 6 CdS monolayers (MLs), reproducible syntheses for n {ge} 10 MLs are less understood. Known procedures sometimes result in homogeneous CdS nucleation instead of heterogeneous, epitaxial CdS nucleation on CdSe, leading to broad and multimodal particle size distributions. Critically, obtained core/shell sizes are often below those desired. This article describes synthetic conditions specific to thick-shell growth (n {ge} 10 and n {ge} 20 MLs) on both small (sub2 nm) and large (>4.5 nm) CdSe cores. We find added secondary amine and low concentration of CdSe cores and molecular precursors give desired core/shell sizes. Amine-induced, partial etching of CdSe cores results in apparent shell-thicknesses slightly beyond those desired, especially for very-thick shells (n {ge} 20 MLs). Thermal ripening and fast precursor injection lead to undesired homogeneous CdS nucleation and incomplete shell growth. Core/shells derived from small CdSe (1.9 nm) have longer PL lifetimes and more pronounced blinking at single-particle level compared with those derived from large CdSe (4.7 nm). We expect our new synthetic approach will lead to a larger throughput of these materials, increasing their availability for fundamental studies and applications.

  7. Synthesis of CdSe quantum dots for quantum dot sensitized solar cell

    SciTech Connect (OSTI)

    Singh, Neetu, E-mail: singh.neetu1985@gmail.com; Kapoor, Avinashi [Department of Electronic Science, University of Delhi South Campus, New Delhi-110 021 (India); Kumar, Vinod [Department of Physics, University of the Free State, Bloemfontein, ZA9300 (South Africa); Mehra, R. M. [School of Engineering and Technology, Sharda University, Greater Noida-201 306, U.P. (India)

    2014-04-24T23:59:59.000Z

    CdSe Quantum Dots (QDs) of size 0.85 nm were synthesized using chemical route. ZnO based Quantum Dot Sensitized Solar Cell (QDSSC) was fabricated using CdSe QDs as sensitizer. The Pre-synthesized QDs were found to be successfully adsorbed on front ZnO electrode and had potential to replace organic dyes in Dye Sensitized Solar Cells (DSSCs). The efficiency of QDSSC was obtained to be 2.06 % at AM 1.5.

  8. Native defects in tetradymite Bi2(TexSe3-x) topological insulators

    SciTech Connect (OSTI)

    Wang, Lin-Lin [Ames Laboratory; Huang, Mianliang [South Dakota School of Mines; Thimmaiah, Srinivasa [Ames Laboratory; Alam, Aftab [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; Kaminski, Adam [Ames Laboratory; Lograsso, Thomas A. [Ames Laboratory; Canfield, Paul [Ames Laboratory; Johnson, Duane D. [Ames Laboratory

    2013-03-08T23:59:59.000Z

    Formation energies of native defects in Bi2(TexSe3-x), with comparison to ideal Bi2Te2S, are calculated in density-functional theory to assess transport properties. Bi2Se3 is found to be n type for both Bi- and Se-rich growth conditions, while Bi2Te3 changes from n to p type going from Te- to Bi-rich conditions, as observed. Bi2Te2Se and Bi2Te2S are generally n type, explaining observed heavily doped n-type behavior in most samples. A (0/-) transition level at 16 meV above valence-band maximum for Bi on Te antisites in Bi2Te2Se is related to the observed thermally active transport gap causing a p-to-n transition at low temperature. Bi2(TexSe3-x) with x>2 are predicted to have high bulk resistivity due to effective carrier compensation when approaching the n-to-p crossover. Predicted behaviors are confirmed from characterization of our grown single crystals.

  9. Novel Approaches to Wide Bandgap CuInSe2 Based Absorbers

    SciTech Connect (OSTI)

    William N. Shafarman

    2011-04-28T23:59:59.000Z

    This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film module efficiency as a means to reduce costs. Specific objectives of the research project were: 1) to develop the processes and materials required to improve the performance of wide bandgap thin film solar cells based on alloys of CuInSe2, and 2) to provide the fundamental science and engineering basis for the material, electronic, and device properties required to effectively apply these processes and materials to commercial manufacture. CuInSe2-based photovoltaics have established the highest efficiencies of the thin film materials at both the cell and module scales and are actively being scaled up to commercialization. In the highest efficiency cells and modules, the optical bandgap, a function of the CuInSe2-based alloy composition, is relatively low compared to the optimum match to the solar spectrum. Wider bandgap alloys of CuInSe2 produce higher cell voltages which can improve module performance and enable the development of tandem solar cells to boost the overall efficiency. A focus for the project was alloying with silver to form (AgCu)(InGa)Se2 pentenary thin films deposited by elemental co-evaporation which gives the broadest range of control of composition and material properties. This alloy has a lower melting temperature than Ag-free, Cu-based chalcopyrite compounds, which may enable films to be formed with lower defect densities and the (AgCu)(InGa)Se2 films give improved material properties and better device performance with increasing bandgap. A comprehensive characterization of optical, structural, and electronic properties of (AgCu)(InGa)Se2 was completed over the complete compositional range 0 ? Ga/(In+Ga) ? 1 and 0 ? Ag/(Ag+Cu) ? 1. Evidence of improved material quality includes reduced sub-bandgap optical absorption, sharper bandtails, and increased grain size with Ag addition. The Ag alloying was shown to increase the range of bandgaps over which solar cells can be fabricated without any drop-off in performance. With bandgap greater than 1.6 eV, in the range needed for tandem solar cells, (AgCu)(InGa)Se2 gave higher efficiency than other CuInSe2-based alloys. Using a simple single-stage co-evaporation process, a solar cell with 17.6% efficiency using a film with bandgap = 1.3 eV was achieved, demonstrating the viability of (AgCu)(InGa)Se2 for high efficiency devices. With a three-stage co-evaporation process for (AgCu)(InGa)Se2 deposition a device with efficiency = 13.0 % and VOC = 890 mV with JSC = 20.5 mA/cm2, FF = 71.3% was achieved. This surpasses the performance of other wide bandgap CuInSe2-based solar cells. Detailed characterization of the electronic properties of the materials and devices including the application of advanced admittance-based easements was completed.

  10. Optically pumped quantum-dot Cd(Zn)Se/ZnSe laser and microchip converter for yellow-green spectral region

    SciTech Connect (OSTI)

    Lutsenko, E V; Voinilovich, A G; Rzheutskii, N V; Pavlovskii, V N; Yablonskii, G P; Sorokin, S V; Gronin, S V; Sedova, I V; Kop'ev, Petr S; Ivanov, Sergei V; Alanzi, M; Hamidalddin, A; Alyamani, A

    2013-05-31T23:59:59.000Z

    The room temperature laser generation in the yellow-green ({lambda} = 558.5-566.7 nm) spectral range has been demonstrated under optical pumping by a pulsed nitrogen laser of Cd(Zn)Se/ZnSe quantum dot heterostructures. The maximum achieved laser wavelength was as high as {lambda} = 566.7 nm at a laser cavity length of 945 {mu}m. High values of both the output pulsed power (up to 50 W) and the external differential quantum efficiency ({approx}60%) were obtained at a cavity length of 435 {mu}m. Both a high quality of the laser heterostructure and a low lasing threshold ({approx}2 kW cm{sup -2}) make it possible to use a pulsed InGaN laser diode as a pump source. A laser microchip converter based on this heterostructure has demonstrated a maximum output pulse power of {approx}90 mW at {lambda} = 560 nm. The microchip converter was placed in a standard TO-18 (5.6 mm in diameter) laser diode package. (semiconductor lasers. physics and technology)

  11. A Novel and Functional Single Layer Sheet of ZnSe

    SciTech Connect (OSTI)

    Zhou, Jia [ORNL; Sumpter, Bobby G [ORNL; Kent, Paul R [ORNL; Huang, Jingsong [ORNL

    2015-01-01T23:59:59.000Z

    In this Communication, we report a novel singlelayer sheet of ZnSe, with a three-atomic thickness, which demonstrates a strong quantum confinement effect by exhibiting a large blue shift of 2.0 eV in its absorption edge relative to the zinc blende (ZB) bulk phase. Theoretical optical absorbance shows that the largest absorption of this ultrathin single-layer sheet of ZnSe occurs at a wavelength similar to its four-atom-thick doublelayer counterpart but with higher photoabsorption efficiency, suggesting a superior behavior on incident photon-to-current conversion efficiency for solar water splitting, among other potential applications. The results presented herein for ZnSe may be generalized to other group II-VI analogues.

  12. Critical Fields, Thermally Activated Transport, and Critical Current Density of Beta-FeSe Single Crystals

    SciTech Connect (OSTI)

    Petrovic, C.; Lei, H.; Hu, R.

    2011-07-27T23:59:59.000Z

    We present critical fields, thermally activated flux flow (TAFF), and critical current density of tetragonal phase {beta}-FeSe single crystals. The upper critical fields H{sub c2}(T) for H {parallel} (101) and H {perpendicular} (101) are nearly isotropic and are likely governed by the Pauli limiting process. The large Ginzburg-Landau parameter {Kappa} {approx} 72.3(2) indicates that {beta}-FeSe is a type-II superconductor with a smaller penetration depth than in Fe(Te, Se). The resistivity below T{sub c} follows Arrhenius TAFF behavior. For both field directions below 30 kOe, single-vortex pinning is dominant, whereas collective creep becomes important above 30 kOe. The critical current density J{sub c} from M-H loops for H {parallel} (101) is about five times larger than for H {perpendicular} (101), yet much smaller than in other iron-based superconductors.

  13. Recrystallization method to selenization of thin-film Cu(In,Ga)Se.sub.2 for semiconductor device applications

    DOE Patents [OSTI]

    Albin, David S. (Denver, CO); Carapella, Jeffrey J. (Evergreen, CO); Tuttle, John R. (Denver, CO); Contreras, Miguel A. (Golden, CO); Gabor, Andrew M. (Boulder, CO); Noufi, Rommel (Golden, CO); Tennant, Andrew L. (Denver, CO)

    1995-07-25T23:59:59.000Z

    A process for fabricating slightly Cu-poor thin-films of Cu(In,Ga)Se.sub.2 on a substrate for semiconductor device applications includes the steps of forming initially a slightly Cu-rich, phase separated, mixture of Cu(In,Ga)Se.sub.2 :Cu.sub.x Se on the substrate in solid form followed by exposure of the Cu(In,Ga)Se.sub.2 :Cu.sub.x Se solid mixture to an overpressure of Se vapor and (In,Ga) vapor for deposition on the Cu(In,Ga)Se.sub.2 :Cu.sub.x Se solid mixture while simultaneously increasing the temperature of the solid mixture toward a recrystallization temperature (about 550.degree. C.) at which Cu(In,Ga)Se.sub.2 is solid and Cu.sub.x Se is liquid. The (In,Ga) flux is terminated while the Se overpressure flux and the recrystallization temperature are maintained to recrystallize the Cu.sub.x Se with the (In, Ga) that was deposited during the temperature transition and with the Se vapor to form the thin-film of slightly Cu-poor Cu.sub.x (In,Ga).sub.y Se.sub.z. The initial Cu-rich, phase separated large grain mixture of Cu(In,Ga)Se.sub.2 :Cu.sub.x Se can be made by sequentially depositing or co-depositing the metal precursors, Cu and (In, Ga), on the substrate at room temperature, ramping up the thin-film temperature in the presence of Se overpressure to a moderate anneal temperature (about 450.degree. C.) and holding that temperature and the Se overpressure for an annealing period. A nonselenizing, low temperature anneal at about 100.degree. C. can also be used to homogenize the precursors on the substrates before the selenizing, moderate temperature anneal.

  14. Thermodynamic Model for the Solubility of Ba(SeO4, SO4) Precipitates

    SciTech Connect (OSTI)

    Rai, D.; Felmy, Andrew R.; Moore, Dean A.; Kitamura, Akira; Yoshikawa, Hideki; Doi, Reisuke; Yoshida, Yasushi

    2014-08-15T23:59:59.000Z

    Abstract: The solubility of Ba(SeO4, SO4) precipitates was determined as a function of the BaSeO4 mole fractions, ranging from 0.0015 to 0.3830, and time with an equilibration period extending to as long as 302 days. Equilibrium/steady state conditions in this system are reached in ? 65 days. Pitzer’s ion interaction model was used to calculate solid and aqueous phase activity coefficients. Thermodynamic analyses showed that the data do not satisfy Gibbs-Duhem equation, thereby demonstrating that a single-solid solution phase does not control both the selenate and sulfate concentrations. Our extensive data with log 10 [Ba] ranging from ?3.6 to ?5.9 mol kg?1, log 10 [SeO4] rangingfrom?3.6 to -5.2 mol kg?1, and log 10 [SO4] ranging from?4.0 to ?5.3 mol kg?1 can be explained with the formation of an ideal BaSeO4 solid solution phase that controls the selenium concentrations and a slightly disordered/less-crystalline BaSO4(s) (log 10𝐾?sp = ?9.5 instead of ?10.05 for barite) that controls the sulfate concentrations. In these experiments the BaSO4 component of the solid solution phase never reaches thermodynamic equilibrium with the aqueous phase. Thermodynamic interpretations of the data show that both the ideal BaSeO4 solid solution phase and less-crystalline BaSO4 (s) phase are in equilibrium with each other in the entire range of BaSeO 4 mole fractions investigated in this study.

  15. Speciation, characterization, and mobility of As, Se, and Hg in flue gas desulphurization residues

    SciTech Connect (OSTI)

    Souhail R. Al-Abed; Gautham Jegadeesan; Kirk G. Scheckel; Thabet Tolaymat [United States Environmental Protection Agency, Cincinnati, OH (United States). National Risk Management Research Laboratory

    2008-03-01T23:59:59.000Z

    Flue gas from coal combustion contains significant amounts of volatile toxic trace elements such as arsenic (As), selenium (Se), and mercury (Hg). The capture of these elements in the flue gas desulphurization (FGD) scrubber unit has resulted in generation of a metal-laden residue. With increasing reuse of the FGD residues in beneficial applications, it is important to determine metal speciation and mobility to understand the environmental impact of its reuse. In this paper, we report the solid phase speciation of As, Se, and Hg in FGD residues using X-ray absorption spectroscopy (XAS), X-ray fluorescence spectroscopy (XRF), and sequential chemical extraction (SCE) techniques. The SCE results combined with XRF data indicated a strong possibility of As association with iron oxides, whereas Se was distributed among all geochemical phases. Hg appeared to be mainly distributed in the strong-complexed phase. XRF images also suggested a strong association of Hg with Fe oxide materials within FGD residues. XAS analysis indicated that As existed in its oxidized state (As(V)), whereas Se and Hg was observed in primarily reduced states as selenite (Se(IV)) and Hg(I), respectively. The results from the SCE and variable pH leaching tests indicated that the labile fractions of As, Se, and Hg were fairly low and thus suggestive of their stability in the FGD residues. However, the presence of a fine fraction enriched in metal content in the FGD residue suggested that size fractionation is important in assessing the environmental risks associated with their reuse. 34 refs., 3 figs., 4 tabs.

  16. Ann bay lodyans 3 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 3 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml ANN BAY LODYANS 3 Se Bryant Freeman...

  17. Ann bay lodyans 16 / Se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 16 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml ANN BAYL0DYANS16 Yon Ti Degi Se Bryant...

  18. Ann bay lodyans 1 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 1 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml ANN BAY LODYANS 1 Se Bryant Freeman...

  19. Ann bay lodyans 8 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    dlo." Eklid Etyen, Teryewouj 1 2 TI GOUT TI GOUT, KONPE CHAT PEDI Yon jou diskisyon mete pye ant konpe Chen ak konpe Chat. Te gen yon moso vyann ate a. Konpe Chen di se li menm ki te we I anvan, men konpe Chat di se li menm ki te we I anvan... mak sonje. Konsa, Chat ale kay yon boko. Li di: "Papa, m vin lakay ou pou touye tout chen ki gen sou late. M ap peye ou mezi ou vie pou sa." Boko a reponn: "A monche, m ap ba ou sa sou de chez. Eske ou ka jwenn yon ti gout pipi chen?" Konpe Chat...

  20. Investigations of CuInSe sub 2 thin films and contacts

    SciTech Connect (OSTI)

    Nicolet, M.A. (California Inst. of Tech., Pasadena, CA (United States))

    1991-10-01T23:59:59.000Z

    This report describes research into electrical contacts for copper indium diselenide (CuInSe{sub 2}) polycrystalline thin films used for solar cell applications. Molybdenum contacts have historically been the most promising for heterojunction solar cells. This program studied contact stability by investigating thermally induced bilayer reactions between molybdenum and copper, indium, and selenium. Because selenization is widely used to fabricate CuInSe{sub 2} thin films for photovoltaic cells, a second part of the program investigated how the morphologies, phases, and reactions of pre-selenization Cu-In structures are affected by the deposition process and heat treatments. 7 refs., 6 figs.

  1. Ann bay lodyans 2 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 2 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Communication and Copyright. Please share your stories about how Open Access to this article benefits you. This is the published version of the book, made available with the permission of the publisher. Freeman, Bryant C., ed. Ann bay lodyans 2 / se Bryant...

  2. Ann bay lodyans 5 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 5 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Communication and Copyright. Please share your stories about how Open Access to this article benefits you. This is the published version of the book, made available with the permission of the publisher. Freeman, Bryant C., ed. Ann bay lodyans 5 / se Bryant...

  3. Ann bay lodyans 4 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 4 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml Tl CHAT: PI PITI PI RED Vwala se te...

  4. Ann bay lodyans 15 / Se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 15 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml ANN BAY LODYANS15 Se Bryant Freeman...

  5. Ann bay lodyans 6 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 6 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml ANN BAYLODYANS g Se Bryant Freeman...

  6. Pair correlations in nuclei involved in neutrinoless double beta decay: 76Ge and 76Se

    E-Print Network [OSTI]

    S. J. Freeman; J. P. Schiffer; A. C. C. Villari; J. A. Clark; C. Deibel; S. Gros; A. Heinz; D. Hirata; C. L. Jiang; B. P. Kay; A. Parikh; P. D. Parker; J. Qian; K. E. Rehm; X. D. Tang; V. Werner; C. Wrede

    2007-03-23T23:59:59.000Z

    Precision measurements were carried out to test the similarities between the ground states of 76Ge and 76Se. The extent to which these two nuclei can be characterized as consisting of correlated pairs of neutrons in a BCS-like ground state was studied. The pair removal (p,t) reaction was measured at the far forward angle of 3 degrees. The relative cross sections are consistent (at the 5% level) with the description of these nuclei in terms of a correlated pairing state outside the N=28 closed shells with no pairing vibrations. Data were also obtained for 74Ge and 78Se.

  7. 186 VHDL: LENGUAJE PARA S INTESIS Y MODELADO DE CIRCUITOS c El cronograma correspondiente, como resultado de la simulacion, se muestra en la

    E-Print Network [OSTI]

    Valencia, Universidad de

    , como resultado de la simulaciâ??on, se muestra en la figura 12.6 donde se han incluido todas las se

  8. Supplemental Figure 1. Root lengths of S. pinnata and S. albescens grown on vertically placed agar plates after 30 days of growth from germination. Plants treated without () Se (open bars) and with (+) 20 M SeO4

    E-Print Network [OSTI]

    ) and with (+) 20 M SeO4 2- (gray bars). Data represent the average of 4-5 different plants ± SE. P-values using and S. albescens grown with or without 20 M SeO4 2- . The only significant difference between treatments. pinnata when compared with S. albescens grown with and without 20 M SeO4 2- . #12;Supplemental Figure 4

  9. Method of fabricating high-efficiency Cu(In,Ga)(Se,S){sub 2} thin films for solar cells

    DOE Patents [OSTI]

    Noufi, R.; Gabor, A.M.; Tuttle, J.R.; Tennant, A.L.; Contreras, M.A.; Albin, D.S.; Carapella, J.J.

    1995-08-15T23:59:59.000Z

    A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S){sub 2} comprises depositing a first layer of (In,Ga){sub x} (Se,S){sub y} followed by depositing just enough Cu+(Se,S) or Cu{sub x} (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga){sub x} (Se,S){sub y} is deposited first, followed by deposition of all the Cu+(Se,S) or Cu{sub x} (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu{sub x} (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga){sub x} (Se,S){sub y} to go slightly Cu-poor in the final Cu(In,Ga)(Se,S){sub 2} thin film. 5 figs.

  10. Distance-Engineered Plasmon-Enhanced Light Harvesting in CdSe Quantum Dots

    E-Print Network [OSTI]

    Distance-Engineered Plasmon-Enhanced Light Harvesting in CdSe Quantum Dots Shengye Jin,,§, Erica De) is essential for the development of efficient QD-based solar energy conversion systems. In this study, plasmon as a function of interparticle (QD to Ag NP) distance. Up to 24-fold plasmonic enhancement of fluorescence from

  11. To appear in JSiSE, 18(2), 2001 July 30, 2001

    E-Print Network [OSTI]

    Matsuda, Noboru

    To appear in JSiSE, 18(2), 2001 July 30, 2001 1. (Intelligent Tutoring System: ITS) () "" 2. Graesser (1995) Chi (2001 to appear) #12;Graesser Chi Graesser 70 Chi Graesser Chi ITS ITS "" 3. (Graesser , 2001 to appear) - Building Dialogue Systems for Tutoring

  12. FI 10 19 dcembre 2006 page Alan Turing se fraye un chemin jusqu'

    E-Print Network [OSTI]

    Teuscher, Christof

    FI 10 ­ 19 décembre 2006 ­ page Alan Turing se fraye un chemin jusqu'à la place de lPiccard,cheminJeanTschumi,avenueForel,rue RobertMercier,chemin, place ou rueAlanTuring. EtquefaisaitAlanTuringcheminfaisant?Leplus souvent,craqueurducodesecretdela machineEnigma?Certesexagéré,maisle succèsaplusieursparentsetAlanTuring estaumoinslegrandpèreoul

  13. From Bad to Worse: Senior economic inSecurity on the riSe

    E-Print Network [OSTI]

    Snider, Barry B.

    From Bad to Worse: Senior economic inSecurity on the riSe Tatjana Meschede Laura Sullivan Thomas the Senior Financial Stability Index, economic insecurity among senior households increased by one demographic groups, economic security of seniors has deteriorated further. Contrary to the popular belief

  14. Molecular Adsorption to LiMo3Se3 Nanowire Film Chemiresistors

    E-Print Network [OSTI]

    Chiang, Shirley

    Molecular Adsorption to LiMo3Se3 Nanowire Film Chemiresistors Xiubin Qi, Frank E. Osterloh,*, S. A that the temporal and steady-state resistance changes of the films depend on the time following the adsorption and on the number of molecules that adsorb to the nanowire films at a given pressure. The adsorption ability

  15. Hydrogen adsorption on Pd/TiFe (110) surface S.E. Kulkovaa

    E-Print Network [OSTI]

    Kim, Jai Sam

    Hydrogen adsorption on Pd/TiFe (110) surface S.E. Kulkovaa , S.V. Eremeeva,b,*, V.E. Egorushkinc February 2003 by E.L. Ivchenko Abstract Adsorption of hydrogen on the TiFe (110) surface covered the local density approximation. Influence of palladium coating to adsorption properties of the TiFe (110

  16. A n n u A l Campus seCurity And

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    A n n u A l Campus seCurity And Fire saFety report 2012 #12;Dear UC Santa Cruz Community, UC Santa are primarily responsible for ensuring the safety and security of the UC Santa Cruz community from all hazards in the responsibility of keeping our community safe. As such, we encourage you to read our Annual Campus Security

  17. Mn-Substituted Inorganic-Organic Hybrid Materials Based on ZnSe

    E-Print Network [OSTI]

    Li, Jing

    for optoelectronics and information storage technology. In this study, we demonstrate that the hybrid nanostructuresMn-Substituted Inorganic-Organic Hybrid Materials Based on ZnSe: Nanostructures That May Lead are highly desirable and extremely attractive in the development of new multifunctional devices

  18. Electrodeposition of CuGaSe2 from Thiocyanate-Containing Electrolytes

    E-Print Network [OSTI]

    Suni, Ian Ivar

    . Manuscript received September 8, 2010. Published December 2, 2010. CuInxGa1-xSe2 CIGS thin film solar cells- nation velocities.1 Thin film solar cells promise significant economic benefits, because the optical, electrochemical deposition methods may be significantly less expensive for scale-up of thin film solar cells,3

  19. Diffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells

    E-Print Network [OSTI]

    Rockett, Angus

    conversion efficiency of solar cells made from this material [1]. One of the special qualities of the CIGS improve the solar cell performance. In many of the different CIGS fabrication techniques, an in depthDiffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells O. Lundberga,*, J. Lua , A

  20. Mechanical impedance and CPX noise of SMA V.F. Vazquez and S.E. Paje

    E-Print Network [OSTI]

    Boyer, Edmond

    to the volume population affected, are transportation systems like motor vehicles. Tire road noise is the noiseMechanical impedance and CPX noise of SMA pavements V.F. V´azquez and S.E. Paje UCLM-LA2IC, Av 2012 Nantes Conference 23-27 April 2012, Nantes, France 167 #12;CPX noise is the sound measured

  1. Runions LMDZ6 se lancer dans la prparation des configuration futures,

    E-Print Network [OSTI]

    Madeleine, Jean-Baptiste

    . Première réunion improvisée au milieu de l'été parce qu'on se posait des questions sur le bout par lequel 19 paramètres, etc ...) - Changement de code radiatif et nouveaux forçages pour IPCC

  2. Photovoltaic effect in InSe Application to Solar Energy Conversion

    E-Print Network [OSTI]

    Boyer, Edmond

    253 Photovoltaic effect in InSe Application to Solar Energy Conversion A. Segura, J. P. Guesdon, JSe is shown to be a new material with attractive characteristics for solar energy conversion. PerformanceV at 300 K and it is thus close to the theoretical optimum for solar energy conversion. Since its transport

  3. SeRLoc: Secure Range-Independent Localization for Wireless Sensor Networks

    E-Print Network [OSTI]

    Hochberg, Michael

    SeRLoc: Secure Range-Independent Localization for Wireless Sensor Networks Loukas Lazos and Radha, radha}@ee.washington.edu ABSTRACT In many applications of wireless sensor networks (WSN), sensors Localization, Wireless sensor networks, range-independent This work was supported in part by the following

  4. RisNyt NO2 2005 I de kommende rtier vil vi se store

    E-Print Network [OSTI]

    fjerde i en se- rie, der sætter energiemner i perspektiv på globalt, regionalt og dansk niveau. Danmark har gode muligheder for at bevare førertrøjen I Danmark er vi allerede nået langt. Energi vigtigere rolle og især vindenergi er kraftigt udbygget. Samtidig kan Danmark fungere som en slags "buffer

  5. Polarized Luminescence of Defects in CuGaSe2 Susanne Siebentritt1,2

    E-Print Network [OSTI]

    Rockett, Angus

    ). But for the whole group of I-III-VI2 chalcopyrite semiconductors no reliable identification of native defects by ESR been found in CuInSe2. [14] In the effort of relating the energy positions of the defects to defect. Res. Soc. Symp. Proc. Vol. 1012 © 2007 Materials Research Society 1012-Y13-01 #12;the experiment

  6. 7900 SE 28th Street, Suite 200 Mercer, Island, WA 98040-2970

    E-Print Network [OSTI]

    7900 SE 28th Street, Suite 200 Mercer, Island, WA 98040-2970 v 206.236.7200 f 206.236.3019 www Administration. The Joint Proposal is a comprehensive settlement that will bring to an end the long costs, when the responsibility for reaching agreements with IPPs, is dispersed directly to the load

  7. Characterization of an FFDM unit based on a-Se direct conversion detector

    E-Print Network [OSTI]

    Lanconelli, Nico

    Characterization of an FFDM unit based on a-Se direct conversion detector Achille Albanese1 µm. The direct conversion of X-rays into charge provides excellent imaging performance. In this work, detectors based on a direct-conversion technology seem to give a better performance, especially at high

  8. A highly efficient (>6%) Cd1xMnxSe quantum dot sensitized solar cell

    E-Print Network [OSTI]

    Cao, Guozhong

    A highly efficient (>6%) Cd1ÀxMnxSe quantum dot sensitized solar cell Jianjun Tian,*a Lili Lv,a Chengbin Fei,b Yajie Wang,b Xiaoguang Liua and Guozhong Cao*bc Quantum dot sensitized solar cells (QDSCs-effective solar cell. The design and synthesis of quantum dots (QDs) for achieving high photoelectric performance

  9. Phonon and thermal properties of exfoliated TaSe2 thin films T. R. Pope,2

    E-Print Network [OSTI]

    films exfoliated from TaSe2 and other metal dichalcogenides, as well as for evaluating self-heating-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California its bulk value of $16 W/mK to $9 W/mK in 45-nm thick films. The measurement of electrical resistivity

  10. Xenosaurus phalaroanthereon: Edmica a Oaxaca y se distribuye en dos localidades en la

    E-Print Network [OSTI]

    Nacional Autónoma de México, Universidad

    Oficial Mexicana sólo se encuentran enlistadas tres de las especies que conforman el género (X. grandis, X concretas para su conservación y evaluar el estado de las poblaciones existentes. A pesar de que en la Norma:Xenosauridae) del sureste de Hidalgo, México. Boletín de la Sociedad Herpetológica Mexicana 15:20-22. Por: Luis

  11. Study of light-induced vector changes in the local atomic structure of AsSe glasses by EXAFS

    E-Print Network [OSTI]

    Drabold, David

    Study of light-induced vector changes in the local atomic structure of As­Se glasses by EXAFS G changes in the local structure of As­Se glasses using extended X-ray ab- sorption fine structure (EXAFS

  12. First-principles molecular-dynamics study of glassy As2Se3 Jun Li and D. A. Drabold

    E-Print Network [OSTI]

    Drabold, David

    static structure factor in the range 2­6 Å 1 . The preferred structural unit is pyramidal AsSe3 loosely on the cluster model8 consisting mostly of pyramidal AsSe3 molecules,9 and the other is the layer structure using a molecular model and several vibrational frequencies were assigned to pyramidal AsSe3

  13. Compiling Java for Real-Time Systems Compiling Java for

    E-Print Network [OSTI]

    Licentiate Thesis, 2004 Department of Computer Science Lund Institute of Technology Lund University #12;In 1652-4691 Licentiate Thesis 1, 2004 LU-CS-LIC:2004-1 Thesis submitted for partial fulfillment of the degree of licentiate. Department of Computer Science Lund Institute of Technology Lund University Box 118

  14. Thermoelectric properties of indium doped PbTe{sub 1-y}Se{sub y} alloys

    SciTech Connect (OSTI)

    Bali, Ashoka; Mallik, Ramesh Chandra, E-mail: rcmallik@physics.iisc.ernet.in [Thermoelectric Materials and Devices Laboratory, Department of Physics, Indian Institute of Science, Bangalore 560012, Karnataka (India); Wang, Heng; Snyder, G. Jeffrey [Department of Materials Science, California Institute of Technology, Pasadena, California 91125 (United States)

    2014-07-21T23:59:59.000Z

    Lead telluride and its alloys are well known for their thermoelectric applications. Here, a systematic study of PbTe{sub 1-y}Se{sub y} alloys doped with indium has been done. The powder X-Ray diffraction combined with Rietveld analysis confirmed the polycrystalline single phase nature of the samples, while microstructural analysis with scanning electron microscope results showed densification of samples and presence of micrometer sized particles. The temperature dependent transport properties showed that in these alloys, indium neither pinned the Fermi level as it does in PbTe, nor acted as a resonant dopant as in SnTe. At high temperatures, bipolar effect was observed which restricted the zT to 0.66 at 800?K for the sample with 30% Se content.

  15. Algorithmically scalable block preconditioner for fully implicit shallow water equations in CAM-SE

    SciTech Connect (OSTI)

    Lott, P Aaron [Lawrence Livermore National Laboratory (LLNL); Woodward, Carol [Lawrence Livermore National Laboratory (LLNL); Evans, Katherine J [ORNL

    2015-01-01T23:59:59.000Z

    Performing accurate and efficient numerical simulation of global atmospheric climate models is challenging due to the disparate length and time scales over which physical processes interact. Implicit solvers enable the physical system to be integrated with a time step commensurate with processes being studied. The dominant cost of an implicit time step is the ancillary linear system solves, so we have developed a preconditioner aimed at improving the efficiency of these linear system solves. Our preconditioner is based on an approximate block factorization of the linearized shallow-water equations and has been implemented within the spectral element dynamical core within the Community Atmospheric Model (CAM-SE). In this paper we discuss the development and scalability of the preconditioner for a suite of test cases with the implicit shallow-water solver within CAM-SE.

  16. CdS/PbSe heterojunction for high temperature mid-infrared photovoltaic detector applications

    SciTech Connect (OSTI)

    Weng, Binbin, E-mail: binbinweng@ou.edu, E-mail: shi@ou.edu; Qiu, Jijun; Zhao, Lihua; Chang, Caleb [The School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019 (United States); Shi, Zhisheng, E-mail: binbinweng@ou.edu, E-mail: shi@ou.edu [The School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma 73019 (United States); Nanolight, Inc., Norman, Oklahoma 73069 (United States)

    2014-03-24T23:59:59.000Z

    n-CdS/p-PbSe heterojunction is investigated. A thin CdS film is deposited by chemical bath deposition on top of epitaxial PbSe film by molecular beam epitaxy on Silicon. Current-voltage measurements demonstrate very good junction characteristics with rectifying ratio of ?178 and ideality factor of 1.79 at 300?K. Detectors made with such structure exhibit mid-infrared spectral photoresponse at room temperature. The peak responsivity R{sub ?} and specific detectivity D{sup *} are 0.055?A/W and 5.482?×?10{sup 8}?cm·Hz{sup 1/2}/W at ??=?4.7??m under zero-bias photovoltaic mode. Temperature-dependent photoresponse measurements show abnormal intensity variation below ?200?K. Possible reasons for this phenomenon are also discussed.

  17. Optical nonlinear absorption characteristics of Sb{sub 2}Se{sub 3} nanoparticles

    SciTech Connect (OSTI)

    Muralikrishna, Molli, E-mail: muralikrishnamolli@sssihl.edu.in; Kiran, Aditha Sai, E-mail: muralikrishnamolli@sssihl.edu.in; Ravikanth, B., E-mail: muralikrishnamolli@sssihl.edu.in; Sowmendran, P., E-mail: muralikrishnamolli@sssihl.edu.in; Muthukumar, V. Sai, E-mail: muralikrishnamolli@sssihl.edu.in; Venkataramaniah, Kamisetti, E-mail: muralikrishnamolli@sssihl.edu.in [Department of Physics, Sri Sathya Sai Institute of Higher Learning, Prasanthinilayam-515 134 (India)

    2014-04-24T23:59:59.000Z

    In this work, we report for the first time, the nonlinear optical absorption properties of antimony selenide (Sb{sub 2}Se{sub 3}) nanoparticles synthesized through solvothermal route. X-ray diffraction results revealed the crystalline nature of the nanoparticles. Electron microscopy studies revealed that the nanoparticles are in the range of 10 - 40 nm. Elemental analysis was performed using EDAX. By employing open aperture z-scan technique, we have evaluated the effective two-photon absorption coefficient of Sb{sub 2}Se{sub 3} nanoparticles to be 5e-10 m/W at 532 nm. These nanoparticles exhibit strong intensity dependent nonlinear optical absorption and hence could be considered to have optical power limiting applications in the visible range.

  18. Automatic Test Factoring for Java

    E-Print Network [OSTI]

    Saff, David

    2005-06-08T23:59:59.000Z

    Test factoring creates fast, focused unit tests from slow system-widetests; each new unit test exercises only a subset of the functionalityexercised by the system test. Augmenting a test suite with factoredunit tests ...

  19. Magnetism in La?O?(Fe??xMnx)?Se? tuned by Fe/Mn ratio

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lei, Hechang; Bozin, Emil S.; Llobet, A.; Ivanovski, V.; Koteski, V.; Belosevic-Cavor, J.; Cekic, B.; Petrovic, C.

    2012-09-01T23:59:59.000Z

    We report the evolution of structural and magnetic properties in La?O?(Fe??xMnx)?Se?. Heat capacity and bulk magnetization indicate an increased ferromagnetic component of the long-range magnetic order and possible increased degree of frustration. Atomic disorder on Fe(Mn) sites suppresses the temperature of the long-range order whereas intermediate alloys show a rich magnetic phase diagram.

  20. A inevitabilidade de um sismo em Lisboa, s no se sabendo

    E-Print Network [OSTI]

    Instituto de Sistemas e Robotica

    ALTO RISCO SÍSMICO EM LISBOA · A inevitabilidade de um sismo em Lisboa, só não se sabendo a data.balasteiro@sol.pt O SOL fez uma ronda pela capital, acompanhado por especialistas: em caso de sismo, muitos hospitais prô- i ximo sismo de gran- I des dimensões em I Lisboa - uma certe- z a científica, segun- do os

  1. High-Temperature Order/Disorder Transition in the Thermoelectric Cu3SbSe3

    SciTech Connect (OSTI)

    Kirkham, Melanie J [ORNL; Majsztrik, Paul W [ORNL; Skoug, Eric [Michigan State University, East Lansing; Morelli, Donald [Michigan State University, East Lansing; Wang, Hsin [ORNL; Porter, Wallace D [ORNL; Payzant, E Andrew [ORNL; Lara-Curzio, Edgar [ORNL

    2011-01-01T23:59:59.000Z

    We report the results from an investigation into the structural evolution of a potential new thermoelectric material, Cu3SbSe3, as a function of temperature from 25 to 390 C. From high-temperature X-ray diffraction data, the refined lattice parameters were seen to change non-linearly, but continuously, with temperature, with an increased rate of thermal expansion in the a and b lattice parameters from around 125 C until around 175 C and negative thermal expansion in the c axis from around 100 C until around 175 C. Crystallographic charge flipping analysis indicated an increase in the disorder of the copper cations with temperature. This reversible order/disorder phase transition in Cu3SbSe3 affects the transport properties, as evidenced by thermal diffusivity measurements, which change from negative to positive slope at the transition temperature. This structural change in Cu3SbSe3 has implications for its potential use in thermoelectric generators.

  2. The thermally stimulated conductivity in amorphous thin film As?Se?

    E-Print Network [OSTI]

    Bryant, John Duffie

    1972-01-01T23:59:59.000Z

    V with a 14 -3 density of 9. 73 x 10 cm . The thermal velocity of the carriers 6 -18 was 6. 34 x 10 cm/sec, and the capture cross section was 2. 7 x 10 2 cm . These results indicate that the Nett-Davis model is more ap- plicable to amorphous As Se... II-3 Sample Holder Design (not to scale) 15 16 17 11-4 Output Curve for Chromel-Constantan Thermo- couple (Voltage vs. Temperature) (ref. 29) 19 II-5 System Cooling Curve (Temperature vs. Time) 20 II-6 System Heating Curve for a Constant Heater...

  3. Ann bay lodyans 10 / Se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    KU ScholarWorks | http://kuscholarworks.ku.edu Ann Bay Lodyans 10 se Bryant Freeman (“Tonton Liben”) ki pare ti liv sa a 2000 by Bryant C. Freeman, ed. This work has been made available by the University of Kansas Libraries’ Office of Scholarly... Freeman (“Tonton Liben”) ki pare ti liv sa a. [Lawrence, Kan.] : Institute of Haitian Studies ; [Port-au-Prince] : Bon Nouvèl : Fondasyon Alfa Lwès, 2000. Terms of Use: http://www2.ku.edu/~scholar/docs/license.shtml Tl CHENN LO A Te gen yon nonm ki te...

  4. Network Rigidity in GeSe2 Glass at High Pressure

    SciTech Connect (OSTI)

    Antao,S.; Benmore , C.; Li, B.; Wang, L.; Bychkov, E.; Parise, J.

    2008-01-01T23:59:59.000Z

    Acoustic measurements using synchrotron radiation have been performed on glassy GeSe2 up to pressures of 9.6 GPa. A minimum observed in the shear-wave velocity, associated anomalous behavior in Poisson's ratio, and discontinuities in elastic moduli at 4 GPa are indicative of a gradual structural transition in the glass. This is attributed to a network rigidity minimum originating from a competition between two densification mechanisms. At pressures up to 3 GPa, a conversion from edge- to corner-sharing tetrahedra results in a more flexible network. This is contrasted by a gradual increase in coordination number with pressure, which leads to an overall stiffening of the glass.

  5. Giant increase in critical current density of KxFe2-ySe? single crystals

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lei, Hechang; Petrovic, C.

    2011-12-01T23:59:59.000Z

    The critical current density Jabc of KxFe2-ySe? single crystals can be enhanced by more than one order of magnitude, up to ~2.1×10? A/cm² by the post annealing and quenching technique. A scaling analysis reveals the universal behavior of the normalized pinning force as a function of the reduced field for all temperatures, indicating the presence of a single vortex pinning mechanism. The main pinning sources are three-dimensional (3D) point-like normal cores. The dominant vortex interaction with pinning centers is via spatial variations in critical temperature Tc (“?Tc pinning”).

  6. The thermally stimulated conductivity in amorphous thin film As?Se

    E-Print Network [OSTI]

    Bryant, John Duffie

    1972-01-01T23:59:59.000Z

    V with a 14 -3 density of 9. 73 x 10 cm . The thermal velocity of the carriers 6 -18 was 6. 34 x 10 cm/sec, and the capture cross section was 2. 7 x 10 2 cm . These results indicate that the Nett-Davis model is more ap- plicable to amorphous As Se... II-3 Sample Holder Design (not to scale) 15 16 17 11-4 Output Curve for Chromel-Constantan Thermo- couple (Voltage vs. Temperature) (ref. 29) 19 II-5 System Cooling Curve (Temperature vs. Time) 20 II-6 System Heating Curve for a Constant Heater...

  7. Nanosecond switching in GeSe phase change memory films by atomic force microscopy

    SciTech Connect (OSTI)

    Bosse, James L.; Huey, Bryan D., E-mail: bhuey@ims.uconn.edu [Department of Materials Science and Engineering, 97 North Eagleville Road, Unit 3136, Storrs, Connecticut 06269-3136 (United States); Grishin, Ilya; Kolosov, Oleg V. [Department of Physics, Lancaster University, Lancaster LA1 4YB (United Kingdom); Gyu Choi, Yong [Department of Materials Science and Engineering, Korea Aerospace University, Goyang-si, Gyeonggi-do, 412-791 (Korea, Republic of); Cheong, Byung-ki; Lee, Suyoun [Electronic Materials Research Center, Korea Institute of Science and Technology, Seongbuk-gu, Seoul 136-791 (Korea, Republic of)

    2014-02-03T23:59:59.000Z

    Nanosecond scale threshold switching is investigated with conducting atomic force microscopy (AFM) for an amorphous GeSe film. Switched bits exhibit 2–3 orders of magnitude variations in conductivity, as demonstrated in phase change based memory devices. Through the nm-scale AFM probe, this crystallization was achieved with pulse durations of as low as 15?ns, the fastest reported with scanning probe based methods. Conductance AFM imaging of the switched bits further reveals correlations between the switched volume, pulse amplitude, and pulse duration. The influence of film heterogeneities on switching is also directly detected, which is of tremendous importance for optimal device performance.

  8. Ann bay lodyans 7 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2000-01-01T23:59:59.000Z

    ("Tonton Liben") ki pare ti liv sa a. AYITI SE PEP AYISYEN PM 7854 .H39 A56 Enstiti Etid Ayisyen - Inivesite Kannzas Bon Nouvel Fondasyon Alfa Lwes 1997 MALIS AP VANN, WA AP PRAN Yon jou yon neg t ap fe yon ti vizit lakay Malis. Pandan li t ap... I ak nan lespri I, ti lanp sa a ap pemet li we sot isit rive nan Ginen, menm anndan yon kay ki femen ak mi." Neg la mande: "Eske ou te seye sa deja?" Malis reponn: "O non, monche! Eske ou kwe m ta ka rete konsa jis pou m ka fe jouda, fouye lavi...

  9. Neutron Scattering Study on spin dynamics in superconducting (TlRb)2Fe4Se5

    SciTech Connect (OSTI)

    Chi, Songxue [ORNL; Ye, Feng [ORNL; Bao, Wei [Renmin University of China; Fang, Dr. Minghu [Zhejiang University; Wang, H.D. [Zhejiang University; Dong, C.H. [Zhejiang University; Savici, Andrei T [ORNL; Granroth, Garrett E [ORNL; Stone, Matthew B [ORNL; Fishman, Randy Scott [ORNL

    2013-01-01T23:59:59.000Z

    Spin dynamics in superconducting (Tl,Rb)2Fe4Se5 was investigated using the inelastic neutron scattering technique. Spin wave branches that span an energy range from 6.5 to 209 meV are success- fully described by a Heisenberg model whose dominant interactions include only the in-plane nearest (J1 and J0 1) and next nearest neighbor (J2 and J0 2) exchange terms within and between the tetramer spin blocks, respectively. These exchange constants, experimentally determined in this work, would crucially constrain the diverse theoretical viewpoints on magnetism and superconductivity in the Fe-based materials.

  10. PHaSE | U.S. DOE Office of Science (SC)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest andOptimize832 2.860SelectedGLOWAGREEMENTPHaSE Energy

  11. LEVEL BUNDLE METHODS FOR ORACLES WITH ON-DEMAND ...

    E-Print Network [OSTI]

    2012-11-25T23:59:59.000Z

    for the important bundle compression mechanism, that keeps bounded the amount of information ..... the index ?k denotes the aggregate linearization (14).

  12. Level Bundle Methods for oracles with on-demand accuracy

    E-Print Network [OSTI]

    Welington Oliveira

    2012-03-15T23:59:59.000Z

    Mar 15, 2012 ... A numerical benchmark on a battery of two-stage stochastic linear programs assesses the interest of the approach, substantially faster than the ...

  13. Approximating Convex Functions Via Non-Convex Oracles Under ...

    E-Print Network [OSTI]

    2014-06-12T23:59:59.000Z

    Jun 12, 2014 ... Finally, we give positive and negative results for multivariate convex functions. ... A broadly successful approach to massive datasets analysis in- ... By succinct we mean that the space used for the representa- ... functions, as well as of monotone convex functions in the sense of Miller is given in Section 3.).

  14. Mathematical Theories of Interaction with Oracles PhD Candidate

    E-Print Network [OSTI]

    Gordon, Geoffrey J.

    Mansour (Tel Aviv University) Joel Spencer (NYU) Thesis Defense Date: April 12, 2013 Time: 9:00am Location of Machine Learning Theory to problems in Algorithmic Economics.We consider the problem of online pricing and allocating multiple goods of economics of scale or decreasing marginal costs to the seller. In particular

  15. Proximal-ACCPM: a versatile oracle based optimization method

    E-Print Network [OSTI]

    2004-10-26T23:59:59.000Z

    Oct 26, 2004 ... Our last application deals with air quality control in urban regions and ...... priority due to the social need for local air pollution control or global ...

  16. Oracle-Based Optimization Applied to Climate Model Calibration

    E-Print Network [OSTI]

    Beltran-Royo, Cesar

    and earth system modelling since even so-called intermediate complexity models, such as the one used

  17. Nachlese zur Oracle Open World 2011 Detlef Drewanz

    E-Print Network [OSTI]

    Andrzejak, Artur

    and higher system utilization rates Solaris 11 Reliable, secure and streamlined operation Faster system

  18. T-605: Oracle Critical Patch Update Advisory- April 2011

    Broader source: Energy.gov [DOE]

    A Critical Patch Update is a collection of patches for multiple security vulnerabilities. It also includes non-security fixes that are required because of interdependencies by those security patches. Critical Patch Updates are cumulative.

  19. T-537: Oracle Critical Patch Update Advisory- January 2011

    Broader source: Energy.gov [DOE]

    A Critical Patch Update is a collection of patches for multiple security vulnerabilities. It also includes non-security fixes that are required because of interdependencies by those security patches. Critical Patch Updates are cumulative.

  20. Medicine and the Silent Oracle: An Exercise in Uncertainty

    E-Print Network [OSTI]

    Belling, Catherine

    2006-01-01T23:59:59.000Z

    44. Charon R. Narrative Medicine: Honoring the Stories ofAccessed 9/8/2006. Charon. Narrative Medicine: 114.and the Practice of Medicine. Oxford University Press, For

  1. DISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL OPERATION Submitted by Alexei Impact of Secondary Barriers on CuIn1-xGaxSe2 Solar-Cell Operation Thin-film solar cells based on CuInSe2 layers in p-n junctions of CIGS solar cells often improve photodiode properties of the devices. Several

  2. Investigation of polycrystalline thin-film CuInSe{sub 2} solar cells based on ZnSe windows. Annual subcontract report, 15 Febraury 1992--14 February 1993

    SciTech Connect (OSTI)

    Olsen, L C [Washington State Univ. at Tri-Cities, Richland, WA (United States)

    1994-05-01T23:59:59.000Z

    Investigations of ZnSe/CIS solar cells are being carried out in an effort to improve the efficiencies CIS cells and to determine if ZnSe is a viable alternative to CdS as a window material. MOCVD growth of ZnSe is accomplished in a SPIRE 500XT reactor housed in the Electronic Materials Laboratory at WSU Tri-Cities by reacting a zinc adduct with H{sub 2}Se. Conductive n-type ZnSe is grown by using iodine as a dopant. Ethyliodide was mixed with helium and installed on one of the gas lines to the system. ZnSe films have been grown on CIS substrates at 200{degrees}C to 250{degrees}C. ZnO is also being deposited by MOCVD by reacting tetrahydrofuran (THF) with a zinc adduct. ZnSe/CIS heterojunctions have been studied by growing n-ZnSe films onto 2 cm x 2 cm CIS substrates diced from materials supplied by Siemens and then depositing an array of aluminum circular areas 2.8.mm in diameter on top of the ZnSe to serve as contacts. Al films are deposited with a thickness of 80 to l00 {angstrom}so that light can pass through the film, thus allowing the illuminated characteristics of the ZnSe/CIS junction to be tested. Accounting for the 20 to 25 % transmittance through the Al film into the ZnSe/CIS structure, current devices have estimated, active-area AM1.5 efficiencies of 14 %. Open circuit voltages > 500 mV are often attained.

  3. Characterization and device performance of (AgCu)(InGa)Se2 absorber layers

    SciTech Connect (OSTI)

    Hanket, Gregory; Boyle, Jonathan H.; Shafarman, William N.

    2009-06-08T23:59:59.000Z

    The study of (AgCu)(InGa)Se2 absorber layers is of interest in that Ag-chalcopyrites exhibit both wider bandgaps and lower melting points than their Cu counterparts. (AgCu)(InGa)Se2 absorber layers were deposited over the composition range 0 < Ag/(Ag+Cu) < 1 and 0.3 < Ga/(In+Ga) < 1.0 using a variety of elemental co-evaporation processes. Films were found to be singlephase over the entire composition range, in contrast to prior studies. Devices with Ga content 0.3 < Ga/(In+Ga) <0.5 tolerated Ag incorporation up to Ag/(Ag+Cu) = 0.5 without appreciable performance loss. Ag-containing films with Ga/(In+Ga) = 0.8 showed improved device characteristics over Cu-only control samples, in particular a 30-40% increase in short-circuit current. An absorber layer with composition Ag/(Ag+Cu) = 0.75 and Ga/(In+Ga) = 0.8 yielded a device with VOC = 890 mV, JSC = 20.5mA/cm2, fill factor = 71.3%, and ? = 13.0%.

  4. Effect of Ligands on Characteristics of (CdSe)13 Quantum Dot

    SciTech Connect (OSTI)

    Gao, Yang; Zhou, Bo; Kang, Seung-gu; Xin, Minsi; Yang, Ping; Dai, Xing; Wang, Zhigang; Zhou, Ruhong

    2014-01-01T23:59:59.000Z

    The widespread applications of quantum dots (QDs) have spurred an increasing interest in the study of their coating ligands, which can not only protect the electronic structures of the central QDs, but also control their permeability through biological membranes with both size and shape. In this work, we have used density functional theory (DFT) to investigate the electronic structures of (CdSe)13 passivated by OPMe2(CH2)nMe ligands with different lengths and various numbers of branches (Me=methyl group, n = 0, 1-3). Our results show that the absorption peak in the ultraviolet-visible (UV-vis) spectra displays a clear blue-shift, on the scale of ~100 nm, upon the binding of ligands. Once the total number of ligands bound with (CdSe)13 reached a saturated number (9 or 10), no more blue-shift occurred in the absorption peak in the UV-vis spectra. On the other hand, the aliphatic chain length of ligands has a negligible effect on the optical properties of the QD core. Analyses of the bonding characteristics confirm that optical transitions are dominantly governed by the central QD core rather than the organic passivation. Interestingly, the density of states (DOS) share similar characteristics as vibrational spectra, even though there is no coordination vibration mode between the ligands and the central QD. These findings might provide insights on the material design for the passivation of quantum dots for biomedical applications.

  5. The role of ligands in the optical and electronic spectra of CdSe nanoclusters

    SciTech Connect (OSTI)

    Kilina, Svletana [Los Alamos National Laboratory; Sergei, Ivanov A [Los Alamos National Laboratory; Victor, Klimov I [Los Alamos National Laboratory; Sergei, Tretiak [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    We investigate the impact of ligands on morphology, electronic structure, and optical response of the Cd33Se33 cluster, which already overlapps in size with the smallest synthesized CdSe quantum dots (QDs). Our Density Functional Theory (DFT) calculations demonstrate significant surface reorganization both for the bare cluster and for the cluster capped by amine and phosphine oxide ligand models. We observe strong surface-ligand interactions leading to substantial charge redistribution and polarization effects on the surface. This effect results in the appearance of hybridized states, where the electronic density is spread over the cluster and the ligands. Neither the ligand's nor hybridized molecular orbitals appear as trap states inside or near the band gap of the QD. Instead, being optically dark, dense hybridized states from the edges of the valence and the conduction bands could open new relaxation channels for high energy photoexcitations. Comparing quantum dots passivated by different ligands, we found that hybridized states are denser in at the edge of the conduction band of the cluster ligated with phosphine oxide molecules than that with primary amines. Such a different manifestation of ligand binding may potentially lead to the faster electron relaxation in dots passivated by phosphine oxide than by amine ligands, which is in agreement with experimental data.

  6. Structure determination of the high-pressure phase of CdSe

    SciTech Connect (OSTI)

    Li, Yanchun, E-mail: liyc@ihep.ac.cn, E-mail: liuj@ihep.ac.cn; Lin, Chuanlong; Li, Xiaodong; Liu, Jing, E-mail: liyc@ihep.ac.cn, E-mail: liuj@ihep.ac.cn [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Science, 100049 Beijing (China); Li, Gong [State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004 (China); Xu, Jian [Institute of Fluid Physics, China Academy of Engineering Physics, P. O. Box 919-102, Mianyang, Sichuan 621900 (China)

    2014-06-14T23:59:59.000Z

    Structural phase transition sequence of CdSe has been investigated at pressures up to 60?GPa under quasi-hydrostatic conditions using synchrotron X-ray diffraction. A phase transition from the wurtzite type (B4) to the NaCl-type (B1) structure has been observed, followed by another phase transition to an orthorhombic structure at 27?GPa, in agreement with previous reports. We show that this high-pressure orthorhombic phase has a Pnma symmetry rather than being a Cmcm-symmetric structure as previously suggested. From our observations, the appearance of the new reflections and reflection splitting with increasing pressure is due to the change of atomic relative positions in crystal lattice and the difference in the compression ratio of lattice parameters for the Pnma structure, and we find no evidence for the third phase transition reported previously. The pressure-induced phase transition of CdSe has been further confirmed by the density-functional theory calculations.

  7. Polytypism, polymorphism, and superconductivity in TaSe2-xTex

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Luo, Huixia; Tao, Jing; Xie, Weiwei; Inoue, Hiroyuki; Gyenis, Andras; Krizan, Jason W.; Yazdani, Ali; Zhu, Yimei; Cava, R. J.

    2015-03-17T23:59:59.000Z

    Polymorphism in materials often leads to significantly different physical properties - the rutile and anatase polymorphs of TiO? are a prime example. Polytypism is a special type of polymorphism, occurring in layered materials when the geometry of a repeating structural layer is maintained but the layer stacking sequence of the overall crystal structure can be varied; SiC is an example of a material with many polytypes. Although polymorphs can have radically different physical properties, it is much rarer for polytypism to impact physical properties in a dramatic fashion. Here we study the effects of polytypism and polymorphism on the superconductivitymore »of TaSe?, one of the archetypal members of the large family of layered dichalcogenides. We show that it is possible to access 2 stable polytypes and 2 stable polymorphs in the TaSe2-xTex solid solution, and find that the 3R polytype shows a superconducting transition temperature that is between 6 and 17 times higher than that of the much more commonly found 2H polytype. The reason for this dramatic change is not apparent, but we propose that it arises either from a remarkable dependence of Tc on subtle differences in the characteristics of the single layers present, or from a surprising effect of the layer stacking sequence on electronic properties that instead are expected to be dominated by the properties of a single layer in materials of this kind.« less

  8. Dependence of superconductivity in CuxBi?Se? on quenching conditions

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Schneeloch, J. A.; Zhong, R. D.; Xu, Z. J.; Gu, G. D.; Tranquada, J. M.

    2015-04-01T23:59:59.000Z

    Topological superconductivity, implying gapless protected surface states, has recently been proposed to exist in the compound CuxBi?Se?. Unfortunately, low diamagnetic shielding fractions and considerable inhomogeneity have been reported in this compound. In an attempt to understand and improve on the finite superconducting volume fractions, we have investigated the effects of various growth and post-annealing conditions. With a melt-growth (MG) method, diamagnetic shielding fractions of up to 56% in Cu???Bi?Se? have been obtained, the highest value reported for this method. We investigate the efficacy of various quenching and annealing conditions, finding that quenching from temperatures above 560°C is essential for superconductivity,more »whereas quenching from lower temperatures or not quenching at all is detrimental. A modified floating zone (FZ) method yielded large single crystals but little superconductivity. Even after annealing and quenching, FZ-grown samples had much less chance of being superconducting than MG-grown samples. From the low shielding fractions in FZ-grown samples and the quenching dependence, we suggest that a metastable secondary phase having a small volume fraction in most of the samples may be responsible for the superconductivity.« less

  9. SeZnSb alloy and its nano tubes, graphene composites properties

    SciTech Connect (OSTI)

    Singh, Abhay Kumar [Department of Physics, Indian Institute of Physics, Bangalore-560012 (India)

    2013-04-15T23:59:59.000Z

    Composite can alter the individual element physical property, could be useful to define the specific use of the material. Therefore, work demonstrates the synthesis of a new composition Se{sub 96}-Zn{sub 2}-Sb{sub 2} and its composites with 0.05% multi-walled carbon nano tubes and 0.05% bilayer graphene, in the glassy form. The diffused amorphous structure of the multi walled carbon nano tubes and bilayer gaphene in the Se{sub 96}-Zn{sub 2}-Sb{sub 2} alloy have been analyzed by using the Raman, X-ray photoluminescence spectroscopy, Furrier transmission infrared spectra, photoluminescence, UV/visible absorption spectroscopic measurements. The diffused prime Raman bands (G and D) have been appeared for the multi walled carbon nano tubes and graphene composites, while the X-ray photoluminescence core energy levels peak shifts have been observed for the composite materials. Subsequently the photoluminescence property at room temperature and a drastic enhancement (upto 80%) in infrared transmission percentage has been obtained for the bilayer graphene composite, along with optical energy band gaps for these materials have been evaluated 1.37, 1.39 and 1.41 eV.

  10. Planar waveguide obtained by burying a Ge22As20Se58 fiber in As2S3 glass

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Planar waveguide obtained by burying a Ge22As20Se58 fiber in As2S3 glass Quentin Coulombier glasses. Two highly mature chalcogenide glasses are used for these experiments. GASIR glass from Umicore IR Glass, Olen, Belgium, with the composition of Ge22As20Se58 is used to draw fibers

  11. CoSe2 Nanoparticles Grown on Carbon Fiber Paper: An Efficient and Stable Electrocatalyst for Hydrogen Evolution Reaction

    E-Print Network [OSTI]

    Cui, Yi

    are designed to function in acidic electrolyte, in which the state- of-the-art hydrogen-producing catalystsCoSe2 Nanoparticles Grown on Carbon Fiber Paper: An Efficient and Stable Electrocatalyst-dimensional electrodes composed of CoSe2 nanoparticles grown on carbon fiber paper. The electrode exhibits excellent

  12. Hydrogen passivation of Se and Te in AlSb M. D. McCluskey and E. E. Haller

    E-Print Network [OSTI]

    McCluskey, Matthew

    Hydrogen passivation of Se and Te in AlSb M. D. McCluskey and E. E. Haller Lawrence Berkeley observed local vibrational modes LVM's arising from DX-hydrogen complex in AlSb. Hydrogen was diffused into bulk AlSb:Se and AlSb:Te by annealing in sealed quartz ampoules with either hydrogen gas or methanol CH

  13. Absorption spectra of CdSe-ZnS core-shell quantum dots at high photon energies : experiment and modeling

    E-Print Network [OSTI]

    Ghosh, Sandip

    Absorption spectra of CdSe-ZnS core-shell quantum dots at high photon energies : experiment spectra of CdSe-ZnS core-shell quantum dot (QD) ensembles, with average core diameters ranging from 2.6 nm. In agreement with previous reports, the absorption coefficient at energies 1 eV above the effective bandgap

  14. Metastability in Pressure-Induced Structural Transformations of CdSe/ZnS Core/Shell Nanocrystals

    E-Print Network [OSTI]

    Rabani, Eran

    . In nanocrystals with thick shells, we furthermore observe a wurtzite to NiAs transformation, which does not occur on particles' size and shape.2-6 The wurtzite to rocksalt transformation in CdSe nanocrystals, for example wurtzite CdSe nanocrystals of 3 nm diameter (500 atoms), that have been epitaxially passivated with Zn

  15. Viscosity and radial distribution function in PbxSe(1-x) melts for stoechiometric and peritectic compositions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    L-529 Viscosity and radial distribution function in PbxSe(1-x) melts for stoechiometric by lead atoms sur- rounded by Se atoms are considered. Kinematic viscosity data are compared a molecular structure in the liquid state rather than a chain-structure [1]. Viscosity is very sensitive

  16. Atomic structures and electronic properties of 2H-NbSe{sub 2}: The impact of Ti doping

    SciTech Connect (OSTI)

    Li, Hongping, E-mail: hpli@mail.ujs.edu.cn, E-mail: zcwang@wpi-aimr.tohoku.ac.jp; Chen, Lin; Zhang, Kun; Liang, Jiaqing; Tang, Hua; Li, Changsheng [Institute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013 (China); Liu, Xiaojuan; Meng, Jian [State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China); Wang, Zhongchang, E-mail: hpli@mail.ujs.edu.cn, E-mail: zcwang@wpi-aimr.tohoku.ac.jp [Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

    2014-09-14T23:59:59.000Z

    Layered transition metal dichalcogenides have aroused renewed interest as electronic materials, yet their electronic performances could be modified by chemical doping. Here, we perform a systematic first-principles calculation to investigate the effect of Ti doping on atomic structure and electronic properties of the 2H-NbSe{sub 2}. We consider a total of three possible Ti-doping models and find that both the substitution and intercalated models are chemically preferred with the intercalation model being more favorable than the substitution one. Structural analyses reveal a slight lattice distortion triggered by Ti doping, but the original structure of 2H-NbSe{sub 2} is maintained. We also observe an expansion of c axis in the substituted model, which is attributed to the reduced van der Waals interaction arising from the increased Se-Se bond length. Our calculations also predict that the electron transport properties can be enhanced by the Ti doping, especially for the Ti-intercalated 2H-NbSe{sub 2}, which should be beneficial for the realization of superconductivity. Furthermore, the covalence element is found in the Ti-Se bonds, which is ascribed to the hybridization of Ti 3d and Se 4p orbitals. The findings indicate that doping of transition metals can be regarded as a useful way to tailor electronic states so as to improve electron transport properties of 2H-NbSe{sub 2}.

  17. RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France)

    E-Print Network [OSTI]

    Fouke, Bruce W.

    1 RUNNING HEAD: Subaerial Exposure Unconformities on the Vercors Carbonate Platform Subaerial Exposure Unconformities on the Vercors Carbonate Platform (SE France) and their Sequence Stratigraphic carbonate platform (SE France), shows that the most prominent break in depositional style does not coincide

  18. Optical and quantum efficiency analysis of (Ag,Cu)(In,Ga)Se2 absorber layers

    SciTech Connect (OSTI)

    Boyle, Jonathan; Hanket, Gregory; Shafarman, William

    2009-06-09T23:59:59.000Z

    (Ag,Cu)(In,Ga)Se2 thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performing linear fits of (?h?)2 vs. h?, and the quantum efficiency bandgaps were determined by relative shift analysis of device curves with fixed Ga/(In+Ga) composition, but varying Ag/(Cu+Ag) composition. The determined experimental optical bandgap ranges of the Ga/(In+Ga) = 0.31, 0.52, and 0.82 groups, with Ag/(Cu+Ag) ranging from 0 to 1, were 1.19-1.45 eV, 1.32-1.56 eV, and 1.52-1.76 eV, respectively. The optical bowing parameter of the different Ga/(In+Ga) groups was also determined.

  19. Environmental issues related to commercialization of CulnSe{sub 2}- based photovoltaics

    SciTech Connect (OSTI)

    Eberspacher, C. [UNISUN, Newbury Park, CA (United States); Fthenakis, V.M.; Moskowitz, P.D.

    1996-07-01T23:59:59.000Z

    One of the most promising materials for low-cost thin film photovoltaic cells is copper indium selenide (CuInSe{sub 2} or CIS). As with any new material, successful commercialization of CIS photovoltaic (PV) technology will require attention to environmental issues related to the sources of raw materials, their usage, and the disposal and/or recycling of products at the end of their useful life. This paper focuses on three specific environmental issues related to CIS technology: (i) Economics of the use and re-use of materials; (ii) regulations on environmental disposal and waste handling, and (iii) logistics and economics of recycling and disposing of products by industries faced with comparable environmental issues.

  20. The surface-state of the topological insulator Bi2Se3 revealed by cyclotron resonance

    SciTech Connect (OSTI)

    Mcdonald, Ross D [Los Alamos National Laboratory; Ayala - Valenzuela, Oscar E [Los Alamos National Laboratory; Altarawneh, Moaz M [Los Alamos National Laboratory; Analytis, James G [STANFORD UNIV/SLAC; Chu, J. H. [STANFORD UNIV/SLAC; Fisher, R. [STANFORD UNIV/SLAC

    2011-01-14T23:59:59.000Z

    Transport measurements of topological insulators are dominated by the conductivity of the bulk, leading to substantial difficulties in resolving the properties of the surface. To this end, we use high magnetic field, rf- and microwave-spectroscopy to selectively couple to the surface conductivity of Bi2Se3 at high frequency. In the frequency range of a few GHz we observe a crossover from quantum oscillations indicative of a small 3D Fermi surface, to cyclotron resonance indicative of a 2D surface state. By probing the conductivity at reduced skin depths, we have observed a 2D cyclotron resonance from a material whose bulk Fermi-surface is 3D. The frequency-magnetic field scaling of this resonance is inconsistent with the bulk effective mass, but more consistent with the dispersion and band filling of a Dirac-like surface state as observed by ARPES, with substantial manybody renormalization.

  1. Doping Effects on the Thermoelectric Properties of Cu3SbSe4

    SciTech Connect (OSTI)

    Skoug, Eric [Michigan State University, East Lansing; Cain, Jeffrey D. [Michigan State University, East Lansing; Morelli, Donald [Michigan State University, East Lansing; Majsztrik, Paul W [ORNL; Kirkham, Melanie J [ORNL; Lara-Curzio, Edgar [ORNL

    2011-01-01T23:59:59.000Z

    We present the first systematic doping study on the ternary semiconductor Cu3SbSe 4 . We have developed a novel synthesis procedure that produces high-quality polycrystalline samples with hole concentrations an order of magnitude lower than have been reported for the undoped compound. The hole concentration can be increased by adding small amounts of either Ge or Sn on the Sb site. The power factor increases with increasing doping, reaching a maximum value of 16 W/cmK^2 . The thermoelectric properties are optimized for the 2% Sn doped compound which has ZT=0.72 at 630K, rivaling that of state-of-the-art thermoelectric materials in this temperature range.

  2. Energy levels and radiative transition rates for Ge XXXI, As XXXII, and Se XXXIII

    SciTech Connect (OSTI)

    Aggarwal, Sunny, E-mail: sunny.du87@gmail.com; Singh, J.; Jha, A.K.S.; Mohan, Man

    2014-07-15T23:59:59.000Z

    Fine-structure energies of the 67 levels belonging to the 1s{sup 2}, 1s 2l, 1s3l, 1s4l, 1s5l, and 1s6l configurations of Ge XXXI, As XXXII, and Se XXXIII have been calculated using the General-Purpose Relativistic Atomic Structure Package. In addition, radiative rates, oscillator strengths, transition wavelengths, and line strengths have been calculated for all electric dipole, magnetic dipole, electric quadrupole, and magnetic quadrupole transitions among these levels. Lifetimes are also presented for all excited levels of these three ions. We have compared our results with the results available in the literature and the accuracy of the data is assessed. We predict new energy levels, oscillator strengths, and transition probabilities where no other theoretical or experimental results are available, which will form the basis for future experimental work.

  3. One-volt p-InP/n-CdSe regenerative photoelectrochemical cell

    SciTech Connect (OSTI)

    Ang, P.G.P.; Sammells, A.F.

    1983-08-01T23:59:59.000Z

    Features and performance of a two-photoelectrode regenerative photoelectrochemical (PEC) cell that yielded a combined photovoltage of more than one volt are reported. The photoanode was n-CdSe, the photocathode was p-InP, and the electrolyte was aqueous sulfide/polysulfide. Details of the fabrication process are provided, including formation of an ohmic contact by sputter deposited gold and then electroplating the photocathode with Zn, followed by a final sputtered gold layer. Tests under 100 mW/sq cm illumination of the unoptimized regenerative cell produced an open circuit voltage of 1.15 V, a short circuit current of 24 mA/sq cm, a fill factor of 0.40, and an overall efficiency of 5.5 percent.

  4. Characterization of Se-loaded molecular sieves A, X, Y, AlPO-5, and mordenite

    SciTech Connect (OSTI)

    Parise, J.B.; MacDougall, J.E.; Herron, N.; Farlee, R.; Sleight, A.W.; Ying Wang; Bein, T.; Moller, K.; Moroney, L.M.

    1988-01-27T23:59:59.000Z

    Selenium has been successfully loaded into molecular sieves A, X, Y, AlPO-5, and mordenite, and the products were characterized by using EXAFS, solid-state NMR, and diffuse-reflectance techniques. This study reveals selenium is predominantly of the trigonal (helical chains) form in all but the A sample, where only the Se/sub 8/-crown ring form is found. A mixture of allotropes and helical chains occupy the large 3D-pore and channel systems of molecular sieves X and Y; however, a single, probably fixed-pitch helical-chain allotrope occupies the more constrained 12-membered-ring channels found in mordenite and AlPO-5. The high degree of order in these last two sieves is reflected in a strong second-shell feature in the EXAFS spectra. 22 refs., 12 figs., 3 tabs.

  5. Nuclear Structure Relevant to Neutrinoless Double {beta} Decay: {sup 76}Ge and {sup 76}Se

    SciTech Connect (OSTI)

    Schiffer, J. P.; Gros, S.; Jiang, C. L.; Rehm, K. E. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Freeman, S. J.; Fitzpatrick, C. R.; Kay, B. P. [University of Manchester, Manchester M13 9PL (United Kingdom); Clark, J. A.; Deibel, C.; Heinz, A.; Parikh, A.; Parker, P. D.; Werner, V.; Wrede, C. [Yale University, New Haven, Connecticut 06520 (United States); Hirata, D. [GANIL (IN2P3/CNRS -DSM/CEA), B.P. 55027 14076 Caen Cedex 5 (France); Dept. of Physics and Astronomy, Open University, Milton Keynes, MK7 6AA (United Kingdom); Villari, A. C. C. [GANIL (IN2P3/CNRS -DSM/CEA), B.P. 55027 14076 Caen Cedex 5 (France)

    2008-03-21T23:59:59.000Z

    The possibility of observing neutrinoless double {beta} decay offers the opportunity of determining the effective neutrino mass if the nuclear matrix element were known. Theoretical calculations are uncertain, and measurements of the occupations of valence orbits by nucleons active in the decay can be important. The occupation of valence neutron orbits in the ground states of {sup 76}Ge (a candidate for such decay) and {sup 76}Se (the daughter nucleus) were determined by precisely measuring cross sections for both neutron-adding and removing transfer reactions. Our results indicate that the Fermi surface is much more diffuse than in theoretical calculations. We find that the populations of at least three orbits change significantly between these two ground states while in the calculations, the changes are confined primarily to one orbit.

  6. Nuclear Structure Relevant to Neutrinoless Double Beta Decay: 76Ge and 76Se

    E-Print Network [OSTI]

    J. P. Schiffer; S. J. Freeman; J. A. Clark; C. Deibel; C. R. Fitzpatrick; S. Gros; A. Heinz; D. Hirata; C. L. Jiang; B. P. Kay; A. Parikh; P. D. Parker; K. E. Rehm; A. C. C. Villari; V. Werner; C. Wrede

    2007-10-03T23:59:59.000Z

    The possibility of observing neutrinoless double beta decay offers the opportunity of determining the neutrino mass IF the nuclear matrix element were known. Theoretical calculations are uncertain and measurements of the occupations of valence orbits by nucleons active in the decay can be important. The occupation of valence neutron orbits in the ground states of 76Ge and 76Se were determined by precisely measuring cross sections for both neutron-adding and removing transfer reactions. Our results indicate that the Fermi surface is much more diffuse than in theoretical (QRPA) calculations. We find that the populations of at least three orbits change significantly between these two ground states while in the calculations the changes are confined primarily to one orbit.

  7. Stable n-CuInSe/sub 2/iodide-iodine photoelectrochemical cell

    DOE Patents [OSTI]

    Cahen, D.; Chen, Y.W.

    1984-09-20T23:59:59.000Z

    In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe/sub 2/ electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br/sub 2//MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu/sup +/ or Cu/sup 2 +/ salts and in In/sup 3 +/ salts.

  8. Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals

    SciTech Connect (OSTI)

    Choi, Charina L; Koski, Kristie J; Sivasankar, Sanjeevi; Alivisatos, A Paul

    2009-05-26T23:59:59.000Z

    In recent years, a new generation of quantum confined colloidal semiconductor structures has emerged, with more complex shapes than simple quantum dots1, 2. These include nanorods3 and tetrapods4. Beyond shape, it is also now possible to spatially vary the electron and hole potentials within these nanoparticles by varying the composition. Examples of these new structures include seeded dots, rods, and tetrapods, which contain a CdSe core embedded within a CdS shell5, 6. These structures may have many uses beyond those envisioned for simple quantum dots, which are frequently employed in luminescent applications7. This paper is concerned with changes in the optoelectronic properties of tetrapods when the arms are bent. We demonstrate that seeded tetrapods can serve as an optical strain gauge, capable of measuring forces on the order of nanonewtons. We anticipate that a nanocrystal strain gauge with optical readout will be useful for applications ranging from sensitive optomechanical devices to biological force investigations.

  9. Development and characterization of PCDTBT:CdSe QDs hybrid solar cell

    SciTech Connect (OSTI)

    Dixit, Shiv Kumar, E-mail: shivkumardixit.7@gmail.com; Bhatnagar, Chhavi, E-mail: shivkumardixit.7@gmail.com; Kumari, Anita, E-mail: shivkumardixit.7@gmail.com; Madhwal, Devinder, E-mail: shivkumardixit.7@gmail.com; Bhatnagar, P. K., E-mail: shivkumardixit.7@gmail.com; Mathur, P. C., E-mail: shivkumardixit.7@gmail.com [Department of Electronic Science, University of Delhi South Campus, Benito Juarez Road, New Delhi, 110021 (India)

    2014-10-15T23:59:59.000Z

    Solar cell consisting of low band gap polymer poly[N-900-hepta-decanyl-2,7-carbazole-alt-5,5-(40,70-di-2-thienyl-20,10, 30-benzothiadiazole)] (PCDTBT) as donor and cadmium selenide/zinc sulphide (CdSe/ZnS) core shell quantum dots (QDs) as an acceptor has been developed. The absorption measurements show that the absorption coefficient increases in bulk heterojunction (BHJ) structure covering broad absorption spectrum (200nm–700nm). Also, the photoluminescence (PL) of the PCDTBT:QDs film is found to decrease by an order of magnitude showing a significant transfer of electrons to the QDs. With this approach and under broadband white light with an irradiance of 8.19 mW/cm{sup 2}, we have been able to achieve a power conversion efficiency (PCE) of 3.1 % with fill factor 0.42 for our typical solar cell.

  10. Production cross sections of neutron rich isotopes from a 82Se beam

    E-Print Network [OSTI]

    Tarasov, O B; Amthor, A M; Bandura, L; Baumann, T; Bazin, D; Berryman, J S; Chubarian, G; Fukuda, N; Gade, A; Ginter, T N; Hausmann, M; Inabe, N; Kubo, T; Pereira, J; Portillo, M; Sherrill, B M; Stolz, A; Sumithrarachchi, C; Thoennessen, M; Weisshaar, D

    2012-01-01T23:59:59.000Z

    Production cross sections for neutron-rich nuclei from the fragmentation of a 82Se beam at 139 MeV/u were measured. The longitudinal momentum distributions of 122 neutron-rich isotopes of elements $11 \\le Z \\le 32$ were determined by varying the target thickness. Production cross sections with beryllium and tungsten targets were determined for a large number of nuclei including several isotopes first observed in this work. These are the most neutron-rich nuclides of the elements $22 \\le Z \\le 25$ (64Ti, 67V, 69Cr, 72Mn). One event was registered consistent with 70Cr, and another one with 75Fe. A one-body Qg systematics is used to describe the production cross sections based on thermal evaporation from excited prefragments. The current results confirm those of our previous experiment with a 76Ge beam: enhanced production cross sections for neutron-rich fragments near Z=20.

  11. Production cross sections of neutron rich isotopes from a 82Se beam

    E-Print Network [OSTI]

    O. B. Tarasov; D. J. Morrissey; A. M. Amthor; L. Bandura; T. Baumann; D. Bazin; J. S. Berryman; G. Chubarian; N. Fukuda; A. Gade; T. N. Ginter; M. Hausmann; N. Inabe; T. Kubo; J. Pereira; M. Portillo; B. M. Sherrill; A. Stolz; C. Sumithrarachchi; M. Thoennessen; D. Weisshaar

    2012-09-06T23:59:59.000Z

    Production cross sections for neutron-rich nuclei from the fragmentation of a 82Se beam at 139 MeV/u were measured. The longitudinal momentum distributions of 122 neutron-rich isotopes of elements $11 \\le Z \\le 32$ were determined by varying the target thickness. Production cross sections with beryllium and tungsten targets were determined for a large number of nuclei including several isotopes first observed in this work. These are the most neutron-rich nuclides of the elements $22 \\le Z \\le 25$ (64Ti, 67V, 69Cr, 72Mn). One event was registered consistent with 70Cr, and another one with 75Fe. A one-body Qg systematics is used to describe the production cross sections based on thermal evaporation from excited prefragments. The current results confirm those of our previous experiment with a 76Ge beam: enhanced production cross sections for neutron-rich fragments near Z=20.

  12. ZnO/Cu(InGa)Se.sub.2 solar cells prepared by vapor phase Zn doping

    SciTech Connect (OSTI)

    Ramanathan, Kannan; Hasoon, Falah S.; Asher, Sarah E.; Dolan, James; Keane, James C.

    2007-02-20T23:59:59.000Z

    A process for making a thin film ZnO/Cu(InGa)Se.sub.2 solar cell without depositing a buffer layer and by Zn doping from a vapor phase, comprising: depositing Cu(InGa)Se.sub.2 layer on a metal back contact deposited on a glass substrate; heating the Cu(InGa)Se.sub.2 layer on the metal back contact on the glass substrate to a temperature range between about 100.degree. C. to about 250.degree. C.; subjecting the heated layer of Cu(InGa)Se.sub.2 to an evaporant species from a Zn compound; and sputter depositing ZnO on the Zn compound evaporant species treated layer of Cu(InGa)Se.sub.2.

  13. Migrating data from TcSE to DOORS : an evaluation of the T-Plan Integrator software application.

    SciTech Connect (OSTI)

    Post, Debra S. (Sandia National Laboratories, Livermore, CA); Manzanares, David A.; Taylor, Jeffrey L.

    2011-02-01T23:59:59.000Z

    This report describes our evaluation of the T-Plan Integrator software application as it was used to transfer a real data set from the Teamcenter for Systems Engineering (TcSE) software application to the DOORS software application. The T-Plan Integrator was evaluated to determine if it would meet the needs of Sandia National Laboratories to migrate our existing data sets from TcSE to DOORS. This report presents the struggles of migrating data and focuses on how the Integrator can be used to map a data set and its data architecture from TcSE to DOORS. Finally, this report describes how the bulk of the migration can take place using the Integrator; however, about 20-30% of the data would need to be transferred from TcSE to DOORS manually. This report does not evaluate the transfer of data from DOORS to TcSE.

  14. ZnO/Cu(InGa)Se2 solar cells prepared by vapor phase Zn doping

    DOE Patents [OSTI]

    Ramanathan, Kannan; Hasoon, Falah S.; Asher, Sarah E.; Dolan, James; Keane, James C.

    2007-02-20T23:59:59.000Z

    A process for making a thin film ZnO/Cu(InGa)Se2 solar cell without depositing a buffer layer and by Zn doping from a vapor phase, comprising: depositing Cu(InGa)Se2 layer on a metal back contact deposited on a glass substrate; heating the Cu(InGa)Se2 layer on the metal back contact on the glass substrate to a temperature range between about 100.degree. C. to about 250.degree. C.; subjecting the heated layer of Cu(InGa)Se2 to an evaporant species from a Zn compound; and sputter depositing ZnO on the Zn compound evaporant species treated layer of Cu(InGa)Se2.

  15. Graphene oxide based CdSe photocatalysts: Synthesis, characterization and comparative photocatalytic efficiency of rhodamine B and industrial dye

    SciTech Connect (OSTI)

    Ghosh, Trisha [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of); Lee, Jeong-Ho [Dasan Linc Educational Development Institute, Dankook University, Cheonan, Chungnam, 330-714 (Korea, Republic of); Meng, Ze-Da; Ullah, Kefayat; Park, Chong-Yeon; Nikam, Vikram [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of); Oh, Won-Chun, E-mail: wc_oh@hanseo.ac.kr [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of)

    2013-03-15T23:59:59.000Z

    Highlights: ? CdSe–graphene is synthesized by hydrothermal method. ? Three molar solutions of CdSe were used making three different composites. ? RhB and Texbrite MST-L were used as sample dye solutions. ? Texbrite MST-L is photo degraded in visible light. ? UV-spectroscopic analysis was done to measure degradation. - Abstract: CdSe–graphene composites were prepared using simple “hydrothermal method” where the graphene surface was modified using different molar solutions of cadmium selenide (CdSe) in aqueous media. The characterization of CdSe–graphene composites were studied by X-ray diffraction (XRD), energy dispersive X-ray (EDX), scanning electron microscope (SEM), and with transmission electron microscope (TEM). The catalytic activities of CdSe-composites were evaluated by degradation of rhodamine B (RhB) and commercial industrial dye “Texbrite MST-L (TXT-MST)” with fixed concentration. The degradation was observed by the decrease in the absorbance peak studied by UV spectrophotometer. The decrease in the dye concentration indicated catalytic degradation effect by CdSe–graphene composites.

  16. Single-step in-situ synthesis and optical properties of ZnSe nanostructured dielectric nanocomposites

    SciTech Connect (OSTI)

    Dey, Chirantan; Rahaman Molla, Atiar; Tarafder, Anal; Karmakar, Basudeb, E-mail: basudebk@cgcri.res.in [CSIR-Central Glass and Ceramic Research Institute, Glass Science and Technology Section, Glass Division, 196, Raja S. C. Mullick Road, 700032 Kolkata (India); Kr Mishra, Manish; De, Goutam [CSIR-Central Glass and Ceramic Research Institute, Nano-Structured Materials Division, 196, Raja S. C. Mullick Road, 700032 Kolkata (India); Goswami, Madhumita; Kothiyal, G. P. [Glass and Advanced Ceramics Division, Bhaba Atomic Research Centre, Trombay, 400085 Mumbai (India)

    2014-04-07T23:59:59.000Z

    This work provides the evidence of visible red photoluminescent light emission from ZnSe nanocrystals (NCs) grown within a dielectric (borosilicate glass) matrix synthesized by a single step in-situ technique for the first time and the NC sizes were controlled by varying only the concentration of ZnSe in glass matrix. The ZnSe NCs were investigated by UV-Vis optical absorption spectroscopy, Raman spectroscopy, and transmission electron microscopy (TEM). The sizes of the ZnSe NCs estimated from the TEM images are found to alter in the range of 2–53?nm. Their smaller sizes of the NCs were also calculated by using the optical absorption spectra and the effective mass approximation model. The band gap enlargements both for carrier and exciton confinements were evaluated and found to be changed in the range of 0–1.0?eV. The Raman spectroscopic studies showed blue shifted Raman peaks of ZnSe at 295 and 315?cm{sup ?1} indicating phonon confinement effect as well as compressive stress effect on the surface atoms of the NCs. Red photoluminescence in ZnSe-glass nanocomposite reveals a broad multiple-peak structure due to overlapping of emission from NC size related electron-hole recombination (?707?nm) and emissions from defects to traps, which were formed due to Se and Zn vacancies signifying potential application in photonics.

  17. Green route synthesis of high quality CdSe quantum dots for applications in light emitting devices

    SciTech Connect (OSTI)

    Bera, Susnata, E-mail: susnata.bera@gmail.com [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India); Singh, Shashi B. [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India); Ray, S.K., E-mail: physkr@phy.iitkgp.ernet.in [Department of Physics and Meteorology, Indian Institute of Technology Kharagpur, Kharagpur 721302 (India)

    2012-05-15T23:59:59.000Z

    Investigation was made on light emitting diodes fabricated using CdSe quantum dots. CdSe quantum dots were synthesized chemically using olive oil as the capping agent, instead of toxic phosphine. Room temperature photoluminescence investigation showed sharp 1st excitonic emission peak at 568 nm. Bi-layer organic/inorganic (P3HT/CdSe) hybrid light emitting devices were fabricated by solution process. The electroluminescence study showed low turn on voltage ({approx}2.2 V) .The EL peak intensity was found to increase by increasing the operating current. - Graphical abstract: Light emitting diode was fabricated using CdSe quantum dots using olive oil as the capping agent, instead of toxic phosphine. Bi-layer organic/inorganic (P3HT/CdSe) hybrid light emitting device shows strong electroluminescence in the range 630-661 nm. Highlights: Black-Right-Pointing-Pointer CdSe Quantum dots were synthesized using olive oil as the capping agent. Black-Right-Pointing-Pointer Light emitting device was fabricated using CdSe QDs/P3HT polymer heterojunction. Black-Right-Pointing-Pointer The I-V characteristics study showed low turn on voltage at {approx}2.2 V. Black-Right-Pointing-Pointer The EL peak intensity increases with increasing the operating current.

  18. Photodeposition of Pt on Colloidal CdS and CdSe/CdS Semiconductor Nanostructures

    SciTech Connect (OSTI)

    Dukovic, Gordana; Merkle, Maxwell G.; Nelson, James H.; Hughes, Steven M.; Alivisatos, A. Paul

    2008-08-06T23:59:59.000Z

    Semiconductor photocatalysis has been identified as a promising avenue for the conversion of solar energy into environmentally friendly fuels, most notably by the production of hydrogen from water.[1-5] Nanometer-scale materials in particular have attracted considerable scientific attention as the building blocks for light-harvesting applications.[6,7] Their desirable attributes include tunability of the optical properties with size, amenability to relatively inexpensive low-temperature processing, and a high degree of synthetic sophistication leading to increasingly complex and multi-functional architectures. For photocatalysis in particular, the high surface-to-volume ratios in nanoscale materials should lead to an increased availability of carriers for redox reactions on the nanoparticle surface. Recombination of photoexcited carriers directly competes with photocatalytic activity.[3] Charge separation is often achieved with multi-component heterostructures. An early example is the case of TiO2 powders functionalized with Pt and RuO2 particles, where photoexcited electrons are transferred to Pt (the reduction site) and holes to RuO2 (the oxidation site).[8] More recently, many colloidally synthesized nanometer-scale metal-semiconductor heterostructures have been reported.[7,9,10] A majority of these structures are made by thermal methods.[7,10] We have chosen to study photochemical formation of metal-semiconductor heterostructures. The detailed understanding of the mechanisms involved in photodeposition of metals on nanometer-scale semiconductors is necessary to enable a high degree of synthetic control. At the same time, because the results of metal deposition can be directly observed by electron microscopy, it can be used to understand how factors such as nanocrystal composition, shape, carrier dynamics, and surface chemistry influence the photochemical properties of semiconductor nanocrystals. In this communication, we report on the photodeposition of Pt on colloidal CdS and CdSe/CdS core/shell nanocrystals. Among the II-VI semiconductors, CdS is of particular interest because it has the correct band alignment for water photolysis[2] and has been demonstrated to be photocatalytically active.[11-16] We have found that the photoexcitation of CdS and CdSe/CdS in the presence of an organometallic Pt precursor leads to deposition of Pt nanoparticles on the semiconductor surface. Stark differences are observed in the Pt nanoparticle location on the two substrates, and the photodeposition can be completely inhibited by the modification of the semiconductor surface. Our results suggest that tuning of the semiconductor band structure, spatial organization and surface chemistry should be crucial in the design of photocatalytic nanostructures.

  19. Investigation into the growth and structure of thin-film solid solutions of iron-based superconductors in the FeSe{sub 0.92}-FeSe{sub 0.5}Te{sub 0.5} system

    SciTech Connect (OSTI)

    Stepantsov, E. A., E-mail: stepantsov@ns.cryst.ras.ru [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Kazakov, S. M.; Belikov, V. V. [Moscow State University (Russian Federation)] [Moscow State University (Russian Federation); Makarova, I. P. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Arpaia, R.; Gunnarsson, R.; Lombardi, F. [Chalmers University of Technology, Department of Microtechnology and Nanoscience (Sweden)] [Chalmers University of Technology, Department of Microtechnology and Nanoscience (Sweden)

    2013-09-15T23:59:59.000Z

    Thin films of FeSe{sub 0.92} and FeSe{sub 0.5}Te{sub 0.5} iron chalcogenide superconductors and solid solutions containing these components in different ratios have been grown on the surface of LaAlO{sub 3} (10 1-bar 2) crystals by pulsed laser deposition. Films of solid solutions have been deposited by simultaneous laser ablation from two targets of the FeSe{sub 0.92} and FeSe{sub 0.5}Te{sub 0.5} stoichiometric compositions onto one substrate. An X-ray diffraction study of the film structure shows that the films grown are epitaxial and their lattice parameters regularly vary with the ratio of the deposited components, which was controllably varied by changing the ablation intensities from the targets.

  20. Magnetic field induced third order susceptibility of third order harmonic generation in a ZnMgSe strained quantum well

    SciTech Connect (OSTI)

    Mark, J. Abraham Hudson, E-mail: a.john.peter@gmail.com; Peter, A. John, E-mail: a.john.peter@gmail.com [Dept. of Physics, SSM Institute of Engineering and Technology, Dindigul-624002 (India)

    2014-04-24T23:59:59.000Z

    Third order susceptibility of third order harmonic generation is investigated in a Zn{sub 0.1}Mg{sub 0.9}Se/Zn{sub 0.8}Mg{sub 0.2}Se/Zn{sub 0.1}Mg{sub 0.9}Se quantum well in the presence of magnetic field strength. The confinement potential is considered as the addition of energy offsets of the conduction band (or valence band) and the strain-induced potential in our calculations. The material dependent effective mass is followed throughout the computation because it has a high influence on the electron energy levels in low dimensional semiconductor systems.

  1. Photosensitivity of pulsed laser deposited Ge{sub 20}As{sub 20}Se{sub 60} and Ge{sub 10}As{sub 30}Se{sub 60} amorphous thin films

    SciTech Connect (OSTI)

    Hawlová, P.; Olivier, M.; Verger, F. [Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic); Nazabal, V. [Chemical Sciences Institute of Rennes (ISCR), Glasses and Ceramics Team, UMR-CNRS 6226, University of Rennes 1, 35042 Rennes Cedex (France); Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic); N?mec, P., E-mail: petr.nemec@upce.cz [Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice (Czech Republic)

    2013-10-15T23:59:59.000Z

    Graphical abstract: - Highlights: • Amorphous Ge{sub 20}As{sub 20}Se{sub 60}/Ge{sub 10}As{sub 30}Se{sub 60} films are fabricated by pulsed laser deposition. • Photosensitivity of the layers is studied by employing spectroscopic ellipsometry. • As-deposited/relaxed thin films were irradiated by 593, 635, and 660 nm lasers. • Ge{sub 20}As{sub 20}Se{sub 60} layers present almost zero photorefraction in relaxed state. - Abstract: Amorphous Ge{sub 20}As{sub 20}Se{sub 60} and Ge{sub 10}As{sub 30}Se{sub 60} thin films are fabricated by pulsed laser deposition. Prepared films are characterized in terms of their morphology, chemical composition, and optical properties. Special attention is given to the photosensitivity of the layers, which was studied by spectroscopic ellipsometry with as-deposited, annealed and exposed films by three different laser sources (593, 635, and 660 nm). The results show better photostability for Ge{sub 20}As{sub 20}Se{sub 60} thin films, where photoinduced change of optical band gap was found to be equal or less than 0.04 eV and these layers present almost zero photorefraction.

  2. Optical phonons and the soft mode in 2H-NbSe2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Weber, F.; Hott, R.; Heid, R.; Bohnen, K.-P.; Rosenkranz, S.; Castellan, J.-P.; Osborn, R.; Said, A. H.; Leu, B. M.; Reznik, D.

    2013-06-01T23:59:59.000Z

    We present an investigation of the lattice dynamics of the charge density wave (CDW) compound 2H-NbSe2. We analyze the precise nature of the wave vector-dependent electron-phonon coupling (EPC) and derive the bare dispersion of the CDW soft phonon mode using inelastic x-ray scattering combined with ab initio calculations. Experimentally, phonon modes along the ??M line, i.e., q = (h,0,0), with 0 ? h ? 0.5 and the same longitudinal symmetry (?1) as the CDW soft mode, were investigated up to 32 meV. In agreement with our calculations, we observe significant EPC in the optic modes at h ? 0.2. We analyze the EPC in the optic, as well as acoustic, mode and show that the q dependences stem from scattering processes between two bands at the Fermi surface that both have a Nb 4d character. Finally, we demonstrate that the soft mode dispersion at T = 33 K (=TCDW) can be well described on the basis of a strongly q-dependent EPC matrix element and an acousticlike bare phonon dispersion in agreement with observations near room temperature.

  3. Temperature-driven band inversion in Pb?.??Sn?.??Se: Optical and Hall-effect studies

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Anand, Naween; Gu, Genda; Buvaev, Sanal; Hebard, A. F.; Tanner, D. B.; Chen, Zhiguo; Li, Zhiqiang; Choudhary, Kamal; Sinnott, S. B.; Martin, C.

    2014-12-01T23:59:59.000Z

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, a IV-VI mixed chalcogenide. The temperature dependent (10–300 K) reflectance was measured over 40–7000 cm?¹ (5–870 meV) with an extension to 15,500 cm?¹ (1.92 eV) at room temperature. The reflectance was fit to the Drude-Lorentz model using a single Drude component and several Lorentz oscillators. The optical properties at the measured temperatures were estimated via Kramers-Kronig analysis as well as by the Drude-Lorentz fit. The carriers were p-type with the carrier density determined by Hall measurements. A signature of valence intraband transition is found in the low-energy opticalmore »spectra. It is found that the valence-conduction band transition energy as well as the free carrier effective mass reach minimum values at 100 K, suggesting temperature-driven band inversion in the material. Density function theory calculation for the electronic band structure also make similar predictions.« less

  4. Environmental, health and safety issues related to commercializing CuInSe{sub 2}-based photovoltaics

    SciTech Connect (OSTI)

    Eberspacher, C. [UNISUN, Newbury Park, CA (United States); Fthenakis, V.M.; Moskowtiz, P.D. [Brookhaven National Lab., Upton, NY (United States)

    1996-07-01T23:59:59.000Z

    Photovoltaics technology is rapidly evolving towards a new generation of low-cost thin film technologies. One of the most promising materials in this new generation is copper indium selenide (CuInSe{sub 2} or CIS). As with any new material, successful commercialization of CIS photovoltaic (PV) technology will require attention to environmental, health and safety issues, including consideration of the sources, usage, and end-of-product-life disposal and/or recycling of the constituent materials. This work focuses on three specific environmental, health and safety (EH and S) issues related to CIS PV: (1) economics are analyzed to determine their impact on materials use and re-use; (2) Federal and California State environmental disposal and waste handling regulations are analyzed to evaluate their impact on PV module manufacturing and end-of-life module handling; and (3) the logistics and economics of product recycling and waste disposal by industries with comparable EH and S issues are examined to quantify the corresponding options available for handling, disposing of and/or recycling manufacturing by-products and end-of-life modules.

  5. Improved Energy Conversion Efficiency in Wide Bandgap Cu(In,Ga)Se2 Solar Cells

    SciTech Connect (OSTI)

    Contreras, M. A.; Mansfield, L. M.; Egaas, B.; Li, J.; Romero, M.; Noufi, R.; Rudiger-Voigt, E.; Mannstadt, W.

    2011-01-01T23:59:59.000Z

    This report outlines improvements to the energy conversion efficiency in wide bandgap (E{sub g} > ;1.2 eV) solar cells based on CuIn{sub 1-x}Ga{sub x}Se{sub 2}. Using (a) alkaline containing high temperature glass substrates, (b) elevated substrate temperatures 600 C-650 C and (c) high vacuum evaporation from elemental sources following NREL's three-stage process, we have been able to improve the performance of wider bandgap solar cells with 1.2 < E{sub g} < 1.45 eV. Initial results of this work have led to efficiencies >18% for absorber bandgaps {approx}1.30 eV and efficiencies {approx}16% for bandgaps up to {approx}1.45 eV. In comparing J-V parameters in similar materials, we establish gains in the open-circuit voltage and, to a lesser degree, the fill factor value, as the reason for the improved performance. The higher voltages seen in these wide gap materials grown at high substrate temperatures may be due to reduced recombination at the grain boundary of such absorber films. Solar cell results, absorber materials characterization, and experimental details are reported.

  6. Processing approach towards the formation of thin-film Cu(In,Ga)Se2

    DOE Patents [OSTI]

    Beck, Markus E. (Falkensee, DE); Noufi, Rommel (Golden, CO)

    2003-01-01T23:59:59.000Z

    A two-stage method of producing thin-films of group IB-IIIA-VIA on a substrate for semiconductor device applications includes a first stage of depositing an amorphous group IB-IIIA-VIA precursor onto an unheated substrate, wherein the precursor contains all of the group IB and group IIIA constituents of the semiconductor thin-film to be produced in the stoichiometric amounts desired for the final product, and a second stage which involves subjecting the precursor to a short thermal treatment at 420.degree. C.-550.degree. C. in a vacuum or under an inert atmosphere to produce a single-phase, group IB-III-VIA film. Preferably the precursor also comprises the group VIA element in the stoichiometric amount desired for the final semiconductor thin-film. The group IB-IIIA-VIA semiconductor films may be, for example, Cu(In,Ga)(Se,S).sub.2 mixed-metal chalcogenides. The resultant supported group IB-IIIA-VIA semiconductor film is suitable for use in photovoltaic applications.

  7. Performance Characterization and Remedy of Experimental CuInGaSe2 Mini-Modules: Preprint

    SciTech Connect (OSTI)

    Pern, F. J.; Yan, F.; Mansfield, L.; Glynn, S.; Rekow, M.; Murion, R.

    2011-07-01T23:59:59.000Z

    We employed current-voltage (I-V), quantum efficiency (QE), photoluminescence (PL), electroluminescence (EL), lock-in thermography (LIT), and (electrochemical) impedance spectroscopy (ECIS) to complementarily characterize the performance and remedy for two pairs of experimental CuInGaSe2 (CIGS) mini-modules. One pair had the three scribe-lines (P1/P2/P3) done by a single pulse-programmable laser, and the other had the P2/P3 lines by mechanical scribe. Localized QE measurements for each cell strip on all four mini-modules showed non-uniform distributions that correlated well with the presence of performance-degrading strips or spots revealed by PL, EL, and LIT imaging. Performance of the all-laser-scribed mini-modules improved significantly by adding a thicker Al-doped ZnO layer and reworking the P3 line. The efficiency on one of the all-laser-scribed mini-modules increased notably from 7.80% to 8.56% after the performance-degrading spots on the side regions along the cell array were isolated by manual scribes.

  8. Temperature-driven band inversion in Pb?.??Sn?.??Se: Optical and Hall-effect studies

    SciTech Connect (OSTI)

    Anand, Naween [Univ. of Florida, Gainesville, FL (United States); Gu, Genda [Brookhaven National Lab. (BNL), Upton, NY (United States); Buvaev, Sanal [Univ. of Florida, Gainesville, FL (United States); Hebard, A. F. [Univ. of Florida, Gainesville, FL (United States); Tanner, D. B. [Univ. of Florida, Gainesville, FL (United States); Chen, Zhiguo [Florida State Univ., Tallahassee, FL (United States); Li, Zhiqiang [Florida State Univ., Tallahassee, FL (United States); Choudhary, Kamal [Univ. of Florida, Gainesville, FL (United States); Sinnott, S. B. [Univ. of Florida, Gainesville, FL (United States); Martin, C. [Ramapo College, Mahwah, NJ (United States)

    2014-12-01T23:59:59.000Z

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, a IV-VI mixed chalcogenide. The temperature dependent (10–300 K) reflectance was measured over 40–7000 cm?¹ (5–870 meV) with an extension to 15,500 cm?¹ (1.92 eV) at room temperature. The reflectance was fit to the Drude-Lorentz model using a single Drude component and several Lorentz oscillators. The optical properties at the measured temperatures were estimated via Kramers-Kronig analysis as well as by the Drude-Lorentz fit. The carriers were p-type with the carrier density determined by Hall measurements. A signature of valence intraband transition is found in the low-energy optical spectra. It is found that the valence-conduction band transition energy as well as the free carrier effective mass reach minimum values at 100 K, suggesting temperature-driven band inversion in the material. Density function theory calculation for the electronic band structure also make similar predictions.

  9. Disordered stoichiometric nanorods and ordered off-stoichiometric nanoparticles in n-type thermoelectric Bi?Te?.?Se?.?

    E-Print Network [OSTI]

    Carlton, Chris E.

    N-type Bi?Te?.?Se?.? bulk thermoelectric materials with peak ZT values up to ?1 were examined by transmission electron microscopy and electron diffraction. Two nanostructural features were found: (i) a structural modulation ...

  10. Charge Density Waves in Exfoliated Films of van der Waals Materials: Evolution of Raman Spectrum in TiSe2

    E-Print Network [OSTI]

    Charge Density Waves in Exfoliated Films of van der Waals Materials: Evolution of Raman Spectrum graphene-like mechanical exfoliation of TiSe2 crystals to prepare a set of films with different thicknesses

  11. Lattice Thermal conductivity of the Cu3SbSe4-Cu3SbS4 Solid Solution

    SciTech Connect (OSTI)

    Skoug, Eric [Michigan State University, East Lansing; Cain, Jeffrey D. [Michigan State University, East Lansing; Morelli, Donald [Michigan State University, East Lansing; Kirkham, Melanie J [ORNL; Majsztrik, Paul W [ORNL; Lara-Curzio, Edgar [ORNL

    2011-01-01T23:59:59.000Z

    The compositional dependence of the crystal structure and lattice thermal conductivity in the Cu3SbSe4-Cu3SbS4 system has been studied. The lattice parameters of the Cu3SbSe4-xSx compounds decrease linearly with x, and the tetragonal structure (space group no. 121) of the end compounds is maintained at all compositions. The thermal conductivity is much lower than that predicted by a simple rule of mixtures, which is typical for a solid solution. The Debye model produces a very reasonable fit to the experimental lattice thermal conductivity data when phonon scattering due to atomic mass and size differences between Se and S is taken into account. Compounds in this series are likely to improve upon the thermoelectric performance of Cu3SbSe4, which has shown ZT=0.72 when optimized.

  12. Epitaxial growth of Cu,,In,Ga...Se2 on GaAs,,110... and A. Rockett

    E-Print Network [OSTI]

    Rockett, Angus

    . INTRODUCTION The Cu(In, Ga)Se2 CIGS absorber layer in a recent record-efficiency CIGS solar cell1 has a 220.13 Commercially supplied ``epi-ready'' liquid- encapsulated Czo

  13. Expanded Prussian Blue Analogues Incorporating [Re6Se8(CN)6]3-/4-Clusters: Adjusting Porosity via Charge Balance

    E-Print Network [OSTI]

    Shores, Matthew P.

    Expanded Prussian Blue Analogues Incorporating [Re6Se8(CN)6]3-/4- Clusters: Adjusting Porosity via of octahedral [M(CN)6]3-/4- complexes for the synthesis of microporous Prussian blue type solids with adjustable to be a direct expansion of Prussian blue (Fe4[Fe(CN)6]3,14H2O), with [Re6Se8(CN)6]4- clusters connected through

  14. Electron drift-mobility measurements in polycrystalline CuIn1-xGaxSe2 solar cells

    E-Print Network [OSTI]

    Schiff, Eric A.

    .1063/1.3692165] The chalcopyrite alloys CuIn1ÀxGaxSe2 (CIGS) are the basis of very promising thin film solar cells, with solar con conduction band states.8,9 Empirical optimization of CIGS for solar cells thus appears to have led to lowElectron drift-mobility measurements in polycrystalline CuIn1-xGaxSe2 solar cells S. A. Dinca, E. A

  15. Device modeling and simulation of the performance of Cu(In1x,Gax)Se2 solar cells

    E-Print Network [OSTI]

    Anderson, Timothy J.

    on the simulation results, an optimal graded band-gap structure for the CIGS solar cell is proposed. The performance-junction Cu(In1Àx,Gax)Se2 (CIGS) solar cells. Increasing the open-circuit voltage (Voc) to improve the overallDevice modeling and simulation of the performance of Cu(In1Àx,Gax)Se2 solar cells Jiyon Song

  16. Artificial Life p1 RJM 08/01/14 SE4SI12 Artificial Life Part A

    E-Print Network [OSTI]

    Mitchell, Richard

    Artificial Life p1 RJM 08/01/14 SE4SI12 Artificial Life ­ Part A © Dr Richard Mitchell 2014 Dr and Applications #12;p2 RJM 08/01/14 SE4SI12 Artificial Life ­ Part A © Dr Richard Mitchell 2014 Aims of Module Aims: Swarm Intelligence and Artificial Life are two active areas of research in computational

  17. Determination of Grain Boundary Charging in Cu(In,Ga)Se2 Thin Films: Preprint

    SciTech Connect (OSTI)

    Jiang, C. S.; Contreras, M. A.; Repins, I.; Moutinho, H. R.; Noufi, R.; Al-Jassim, M. M.

    2012-06-01T23:59:59.000Z

    Surface potential mapping of Cu(In,Ga)Se2 (CIGS) thin films using scanning Kelvin probe force microscopy (SKPFM) aims to understand the minority-carrier recombination at the grain boundaries (GBs) of this polycrystalline material by examining GB charging, which has resulted in a number of publications. However, the reported results are highly inconsistent. In this paper, we report on the potential mapping by measuring wide-bandgap or high-Ga-content films and by using a complementary atomic force microscopy-based electrical technique of scanning capacitance microscopy (SCM). The results demonstrate consistent, positively charged GBs on our high-quality films with minimal surface defects/charges. The potential image taken on a low-quality film with a 1.2-eV bandgap shows significantly degraded potential contrast on the GBs and degraded potential uniformity on grain surfaces, resulting from the surface defects/charges of the low-quality film. In contrast, the potential image on an improved high-quality film with the same wide bandgap shows significantly improved GB potential contrast and surface potential uniformity, indicating that the effect of surface defects is critical when examining GB charging using surface potential data. In addition, we discuss the effect of the SKPFM setup on the validity of potential measurement, to exclude possible artifacts due to improper SKPFM setups. The SKPFM results were corroborated by using SCM measurements on the films with a CdS buffer layer. The SCM image shows clear GB contrast, indicating different electrical impedance on the GB from the grain surface. Further, we found that the GB contrast disappeared when the CdS window layer was deposited after the CIGS film was exposed extensively to ambient, which was caused by the creation of CIGS surface defects by the ambient exposure.

  18. Biological investigations of the Sandia National Laboratories Sol se Mete Aerial Cable Facility

    SciTech Connect (OSTI)

    Sullivan, R.M.

    1994-10-01T23:59:59.000Z

    This report provides results of a comprehensive biological field survey performed on the Sandia National Laboratories Aerial Cable Facility, at the east end of Kirtland Air Force Base (KAFB), Bernalillo County, New Mexico. This survey was conducted late September through October, 1991. ACF occupies a 440-acre tract of land withdrawn by the US Forest Service (USFS) for use by KAFB, and in turn placed under operational control of SNL by the Department of Energy (DOE). All land used by SNL for ACF is part of a 15,851-acre tract of land withdrawn by the US Forest Service. In addition, a number of different organizations use the 15,851-acre area. The project area used by SNL encompasses portions of approximately six sections (3,840 acres) of US Forest Service land located within the foothills of the west side of the Manzano Mountains (East Mesa). The biological study area is used by the KAFB, the US Department of Interior, and SNL. This area includes: (1) Sol se Mete Springs and Canyon, (2) East Anchor Access Road, (3) East Anchor Site, (4) Rocket Sled Track, (5) North Arena, (6) East Instrumentation Site and Access Road, (7) West Anchor Access Road, (8) West Anchor Site, (9) South Arena, (10) Winch Sites, (11) West Instrumentation Sites, (12) Explosive Assembly Building, (13) Control Building, (14) Lurance Canyon Road and vicinity. Although portions of approximately 960 acres of withdrawn US Forest Service land have been altered, only 700 acres have been disturbed by activities associated with ACF; approximately 2,880 acres consist of natural habitat. Absence of grazing by livestock and possibly native ungulates, and relative lack of human disturbance have allowed this area to remain in a more natural vegetative state relative to the condition of private range lands throughout New Mexico. This report evaluates threatened and endangered species found on ACF, as well as a comprehensive assessment of biological habitats.

  19. Selenization of Sb{sub 2}Se{sub 3} absorber layer: An efficient step to improve device performance of CdS/Sb{sub 2}Se{sub 3} solar cells

    SciTech Connect (OSTI)

    Leng, Meiying; Luo, Miao; Chen, Chao; Qin, Sikai; Chen, Jie; Zhong, Jie; Tang, Jiang, E-mail: jtang@mail.hust.edu.cn [Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, 430074 Hubei (China); School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 Hubei (China)

    2014-08-25T23:59:59.000Z

    Sb{sub 2}Se{sub 3} appeared as a very promising solar absorber because of their attractive material, optical and electrical properties. Previously, we reported thermal evaporated superstrate CdS/Sb{sub 2}Se{sub 3} solar cell achieving 1.9% efficiency. In this letter, we improved device performance to 3.7% (Voc?=?0.335?V, Jsc?=?24.4?mA/cm{sup 2}, and FF?=?46.8%) by an additional selenization step. Careful external quantum efficiency, capacitance-voltage profiling, and photoresponse study indicated selenization probably compensated selenium loss during thermal evaporation, reducing V{sub Se} associated recombination loss and improving device performance.

  20. High field magnetotransport and point contact Andreev reflection measurements on CuCr{sub 2}Se{sub 4} and CuCr{sub 2}Se{sub 3}Br—Degenerate magnetic semiconductor single crystals

    SciTech Connect (OSTI)

    Borisov, K., E-mail: borisovk@tcd.ie; Coey, J. M. D.; Stamenov, P. [School of Physics and CRANN, Trinity College, Dublin 2 (Ireland); Alaria, J. [Department of Physics, University of Liverpool, Liverpool L69 7ZE (United Kingdom)

    2014-05-07T23:59:59.000Z

    Single crystals of the metallically degenerate fully magnetic semiconductors CuCr{sub 2}Se{sub 4} and CuCr{sub 2}Se{sub 3}Br have been prepared by the Chemical Vapour Transport method, using either Se or Br as transport agents. The high-quality, millimetre-sized, octahedrally faceted, needle- and platelet-shaped crystals are characterised by means of high field magnetotransport (?{sub 0}H? 14?T) and Point Contact Andreev Reflection. The relatively high spin polarisation observed |P|>0.56, together with the relatively low minority carrier effective mass of 0.25 m{sub e}, and long scattering time  10{sup ?13}?s, could poise these materials for integration in low- and close-to-room temperature minority injection bipolar heterojunction transistor demonstrations.

  1. Thermodynamic model for the solubility of BaSeO4(cr) in the aqueous Ba2+-SeO42--Na+-H+-OH--H2O system: Extending to high selenate concentrations

    SciTech Connect (OSTI)

    Rai, Dhanpat; Felmy, Andrew R.; Moore, Dean A.; Kitamura, Akira; Yoshikawa, Hideki; Doi, Reisuke; Yoshida, Yasushi

    2014-09-15T23:59:59.000Z

    The solubility of Ba(SeO4, SO4) precipitates was determined as a function of the BaSeO4 mole fractions, ranging from 0.0015 to 0.3830, and time with an equilibration period extending to as long as 302 days. Equilibrium/steady state conditions in this system are reached in ? 65 days. Pitzer’s ion interaction model was used to calculate solid and aqueous phase activity coefficients. Thermodynamic analyses showed that the data do not satisfy Gibbs-Duhem equation, thereby demonstrating that a single-solid solution phase does not control both the selenate and sulfate concentrations. Our extensive data with log10 [Ba]) ranging from -3.6 to -5.9 mol.kg-1, log10 [SeO4]) ranging from -3.6 to -5.2 mol.kg-1, and log10 [SO4] ranging from -4.0 to -5.3 mol.kg-1 can be explained with the formation of an ideal BaSeO4 solid solution phase that controls the selenium concentrations and a slightly disordered/less-crystalline BaSO4(s) (log10 K0sp = -9.5 instead of -10.05 for barite) that controls the sulfate concentrations. In these experiments the BaSO4 component of the solid solution phase never reaches thermodynamic equilibrium with the aqueous phase. Thermodynamic interpretations of the data show that both the ideal BaSeO4 solid solution phase and less-crystalline BaSO4(s) phase are in equilibrium with each other in the entire range of BaSeO4 mole fractions investigated in this study.

  2. Synthesis of Bi{sub 2}Se{sub 3} thermoelectric nanosheets and nanotubes through hydrothermal co-reduction method

    SciTech Connect (OSTI)

    Cui Hongmei [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China); Liu Hong [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China)]. E-mail: hongliu@sdu.edu.cn; Li Xia [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China); Wang Jiyang [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China)]. E-mail: jywang@icm.sdu.edu.cn; Han Feng [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China); Zhang Xudong [State Key Laboratory of Crystal Materials, Shandong University, 27 Shanda Nanlu, Jinan City, Shandong Province 250100 (China); Boughton, R.I. [Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403 (United States)

    2004-11-01T23:59:59.000Z

    Bi{sub 2}Se{sub 3} nanosheets and nanotubes were prepared by a hydrothermal co-reduction method at 150, 180, 200, and 210{sup o}C. Bi{sub 2}Se{sub 3} nanosheets, nanobelts and nanotubes were obtained. The Bi{sub 2}Se{sub 3} nanoflakes are 50-500nm in width and 2-5nm in thickness. The Bi{sub 2}Se{sub 3} nanotubes are 5-10nm in diameter, 80-120nm in length, and 1.3nm in wall thickness. X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, and electron diffraction were employed to characterize the products. Experimental results showed that the nanosheets and the nanotubes are hexagonal in structure with a=4.1354A and c=27.4615A. A possible formation and crystal growth mechanism of Bi{sub 2}Se{sub 3} nanostructures is proposed.

  3. Syntheses, crystal structures, and properties of three new metal selenites Na{sub 2}Co{sub 2}(SeO{sub 3}){sub 3}, Na{sub 2}Co{sub 1.67}Ni{sub 0.33}(SeO{sub 3}){sub 3}, and Na{sub 2}Ni{sub 2}(SeO{sub 3}){sub 3}

    SciTech Connect (OSTI)

    Yuan Xiaoqing [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China); Graduate School of the Chinese Academy of Sciences, Beijing 100049 (China); Feng Meiling, E-mail: fml@fjirsm.ac.c [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China); Li Jianrong [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China); Graduate School of the Chinese Academy of Sciences, Beijing 100049 (China); Huang Xiaoying, E-mail: xyhuang@fjirsm.ac.c [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002 (China)

    2010-09-15T23:59:59.000Z

    Three new sodium cobalt (nickel) selenite compounds, namely, Na{sub 2}Co{sub 2}(SeO{sub 3}){sub 3}, Na{sub 2}Co{sub 1.67}Ni{sub 0.33}(SeO{sub 3}){sub 3}, and Na{sub 2}Ni{sub 2}(SeO{sub 3}){sub 3} have been hydro-/solvothermally synthesized in the mixed solvents of acetonitrile and water. Single-crystal X-ray diffraction analyses reveal that these isostructural compounds belong to the orthorhombic Cmcm space group and their structures feature three-dimensional open frameworks constructed by the two-dimensional layers of [MSeO{sub 3}] pillared by the [SeO{sub 3}]{sup 2-} groups. The two different types of Na{sup +} ions reside in the intersecting two-dimensional channels parallel to the a- and c-axes, respectively. Their thermal properties have been investigated via TGA-DSC. The magnetic measurements indicate the existence of the antiferromagnetic interactions in these compounds. - Graphical abstract: Three new isostructural metal selenites, Na{sub 2}Co{sub 2}(SeO{sub 3}){sub 3}, Na{sub 2}Co{sub 1.67}Ni{sub 0.33}(SeO{sub 3}){sub 3}, and Na{sub 2}Ni{sub 2}(SeO{sub 3}){sub 3} have been hydro-/solvothermally synthesized and characterized. Their structures feature three-dimensional open frameworks with Na{sup +}-occupied channels.

  4. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Arguello, C. J.; Valla, T.; Rosenthal, E. P.; Andrade, E. F.; Jin, W.; Yeh, P. C.; Zaki, N.; Jia, S.; Cava, R. J.; Fernandes, R. M.; et al

    2015-01-01T23:59:59.000Z

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology andmore »the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.« less

  5. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

    SciTech Connect (OSTI)

    Arguello, C. J. [Columbia Univ., New York, NY (United States); Valla, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Rosenthal, E. P. [Columbia Univ., New York, NY (United States); Andrade, E. F. [Columbia Univ., New York, NY (United States); Jin, W. [Columbia Univ., New York, NY (United States); Yeh, P. C. [Columbia Univ., New York, NY (United States); Zaki, N. [Columbia Univ., New York, NY (United States); Jia, S. [Princeton Univ., NJ (United States); Cava, R. J. [Princeton Univ., NJ (United States); Fernandes, R. M. [Univ., of Minnesota, Minneapolis, MN (United States); Millis, A. J. [Columbia Univ., New York, NY (United States); Osgood, Jr., R. M. [Columbia Univ., New York, NY (United States); Princeton Univ., Princeton, NJ (United States); Pasupathy, A. N. [Columbia Univ., New York, NY (United States)

    2015-01-01T23:59:59.000Z

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.

  6. Quasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Arguello, C. J. [Columbia Univ., New York, NY (United States); Valla, T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Rosenthal, E. P. [Columbia Univ., New York, NY (United States); Andrade, E. F. [Columbia Univ., New York, NY (United States); Jin, W. [Columbia Univ., New York, NY (United States); Yeh, P. C. [Columbia Univ., New York, NY (United States); Zaki, N. [Columbia Univ., New York, NY (United States); Jia, S. [Princeton Univ., NJ (United States); Cava, R. J. [Princeton Univ., NJ (United States); Fernandes, R. M. [Univ., of Minnesota, Minneapolis, MN (United States); Millis, A. J. [Columbia Univ., New York, NY (United States); Osgood, Jr., R. M. [Columbia Univ., New York, NY (United States); Princeton Univ., Princeton, NJ (United States); Pasupathy, A. N. [Columbia Univ., New York, NY (United States)

    2015-01-01T23:59:59.000Z

    We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe?, that we measure by scanning tunneling spectroscopic imaging. We show from the momentum and energy dependence of the quasiparticle interference that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe?. We demonstrate that by combining quasiparticle interference data with additional knowledge of the quasiparticle band structure from angle resolved photoemission measurements, one can extract the wavevector and energy dependence of the important electronic scattering processes thereby obtaining direct information both about the fermiology and the interactions. In 2H-NbSe?, we use this combination to show that the important near-Fermi-surface electronic physics is dominated by the coupling of the quasiparticles to soft mode phonons at a wave vector different from the CDW ordering wave vector.

  7. Syntheses, structures, and properties of Ag{sub 4}(Mo{sub 2}O{sub 5})(SeO{sub 4}){sub 2}(SeO{sub 3}) and Ag{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3}

    SciTech Connect (OSTI)

    Ling Jie [Department of Chemistry and Biochemistry, 179 Chemistry Building, Auburn University, Auburn, AL 36849 (United States); Albrecht-Schmitt, Thomas E. [Department of Chemistry and Biochemistry, 179 Chemistry Building, Auburn University, Auburn, AL 36849 (United States)], E-mail: albreth@auburn.edu

    2007-05-15T23:59:59.000Z

    Ag{sub 4}(Mo{sub 2}O{sub 5})(SeO{sub 4}){sub 2}(SeO{sub 3}) has been synthesized by reacting AgNO{sub 3}, MoO{sub 3}, and selenic acid under mild hydrothermal conditions. The structure of this compound consists of cis-MoO{sub 2} {sup 2+} molybdenyl units that are bridged to neighboring molybdenyl moieties by selenate anions and by a bridging oxo anion. These dimeric units are joined by selenite anions to yield zigzag one-dimensional chains that extended down the c-axis. Individual chains are polar with the C {sub 2} distortion of the Mo(VI) octahedra aligning on one side of each chain. However, the overall structure is centrosymmetric because neighboring chains have opposite alignment of the C {sub 2} distortion. Upon heating Ag{sub 4}(Mo{sub 2}O{sub 5})(SeO{sub 4}){sub 2}(SeO{sub 3}) looses SeO{sub 2} in two distinct steps to yield Ag{sub 2}MoO{sub 4}. Crystallographic data: (193 K; MoK{alpha}, {lambda}=0.71073 A): orthorhombic, space group Pbcm, a=5.6557(3), b=15.8904(7), c=15.7938(7) A, V=1419.41(12), Z=4, R(F)=2.72% for 121 parameters with 1829 reflections with I>2{sigma}(I). Ag{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3} was synthesized by reacting AgNO{sub 3} with MoO{sub 3}, SeO{sub 2}, and HF under hydrothermal conditions. The structure of Ag{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3} consists of three crystallographically unique Mo(VI) centers that are in 2+2+2 coordination environments with two long, two intermediate, and two short bonds. These MoO{sub 6} units are connected to form a molybdenyl ribbon that extends along the c-axis. These ribbons are further connected together through tridentate selenite anions to form two-dimensional layers in the [bc] plane. Crystallographic data: (193 K; MoK{alpha}, {lambda}=0.71073 A): monoclinic, space group P2{sub 1} /n, a=7.7034(5), b=11.1485(8), c=12.7500(9) A, {beta}=105.018(1) V=1002.7(2), Z=4, R(F)=3.45% for 164 parameters with 2454 reflections with I>2{sigma}(I). Ag{sub 2}(MoO{sub 3}){sub 3}SeO{sub 3} decomposes to Ag{sub 2}Mo{sub 3}O{sub 10} on heating above 550 deg. C. - Graphical abstract: A view of the one-dimensional [(Mo{sub 2}O{sub 5})(SeO{sub 4}){sub 2}(SeO{sub 3})]{sup 4-} chains that extend down the c-axis in the structure of Ag{sub 4}(Mo{sub 2}O{sub 5})(SeO{sub 4}){sub 2}(SeO{sub 3})

  8. Observation of an electron band above the Fermi level in FeTe?.??Se?.?? from in-situ surface doping

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Zhang, P. [Chinese Academy of Sciences (CAS), Beijing (China); Gu, G. D. [Brookhaven National Lab. (BNL), Upton, NY (United States); Richard, P. [Chinese Academy of Sciences (CAS), Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China); Xu, N. [Chinese Academy of Sciences (CAS), Beijing (China); Paul Scherrer Inst. (PSI), Villigen (Switzerland); Xu, Y. -M. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Ma, J. [Chinese Academy of Sciences (CAS), Beijing (China); Qian, T. [Chinese Academy of Sciences (CAS), Beijing (China); Fedorov, A. V. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Denlinger, J. D. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Ding, H. [Chinese Academy of Sciences (CAS), Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)

    2014-10-27T23:59:59.000Z

    We used in-situ potassium (K) evaporation to dope the surface of the iron-based superconductor FeTe?.??Se?.??. The systematic study of the bands near the Fermi level confirms that electrons are doped into the system, allowing us to tune the Fermi level of this material and to access otherwise unoccupied electronic states. In particular, we observe an electron band located above the Fermi level before doping that shares similarities with a small three-dimensional pocket observed in the cousin, heavily-electron-doped KFe??xSe? compound.

  9. Ultrafast Optical Excitation of a Persistent Surface-State Population in the Topological Insulator Bi2Se3

    SciTech Connect (OSTI)

    Sobota, Jonathan

    2012-03-14T23:59:59.000Z

    Using femtosecond time- and angle-resolved photoemission spectroscopy, we investigated the nonequilibrium dynamics of the topological insulator Bi{sub 2}Se{sub 3}. We studied p-type Bi{sub 2}Se{sub 3}, in which the metallic Dirac surface state and bulk conduction bands are unoccupied. Optical excitation leads to a meta-stable population at the bulk conduction band edge, which feeds a nonequilibrium population of the surface state persisting for >10 ps. This unusually long-lived population of a metallic Dirac surface state with spin texture may present a channel in which to drive transient spin-polarized currents.

  10. Enhancement of surface phonon modes in the Raman spectrum of ZnSe nanoparticles on adsorption of 4-mercaptopyridine

    SciTech Connect (OSTI)

    Islam, Syed K.; Lombardi, John R. [Department of Chemistry, The City College of New York, New York, New York 10031 (United States)] [Department of Chemistry, The City College of New York, New York, New York 10031 (United States)

    2014-02-21T23:59:59.000Z

    By chemically etching a thin film of crystalline ZnSe with acid, we observe a strong Raman enhancement of the surface phonon modes of ZnSe on adsorption of a molecule (4-mercaptopyridine). The surface is composed of oblate hemi-ellipsoids, which has a large surface-to-bulk ratio. The assignment of the observed modes (at 248 and 492 cm{sup ?1}) to a fundamental and first overtone of the surface optical mode is consistent with observations from high-resolution electron energy loss spectroscopy as well as calculations.

  11. Critical current density and mechanism of vortex pinning in KxFe2-ySe? doped with S

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lei, Hechang; Petrovic, C.

    2011-08-01T23:59:59.000Z

    We report the critical current density Jc in KxFe2-ySe2-zSz crystals. The Jc can be enhanced significantly with optimal S doping (z=0.99). For K0.70(7)Fe1.55(7)Se1.01(2)S0.99(2), the weak fishtail effect is found for H II c. The normalized vortex pinning forces follow the scaling law with a maximum position at 0.41 of the reduced magnetic field. These results demonstrate that the small size normal point defects dominate the vortex pinning mechanism.

  12. From 1D Chain to 3D Network: Syntheses, Structures, and Properties of K2MnSn2Se6, K2MnSnSe4, and

    E-Print Network [OSTI]

    Li, Jing

    and MnSe4 tetrahedra, with large channels hosting the K+ cations. III is a layered compound containing 2 tetrahedra into two-dimensional (2D) sheets.1 The 1D 1 [SnQ3]2- rib- bons have also been observed- rahedra to Ag atoms, with large channels hosting the K+ cations.4 In this paper, we report the preparation

  13. Synthesis and Phase Transformation of In2Se3 and CuInSe2 Nanowires Hailin Peng, David T. Schoen, Stefan Meister, Xiao Feng Zhang, and Yi Cui*,

    E-Print Network [OSTI]

    Cui, Yi

    pathways without deadends, which is an advantage over the random p-n junctions. Therefore, NW solar cells10 films of CuInxGa1-xSe2 (CIGS) have been demon- strated to have a high-power efficiency of 19.2%,4 which

  14. Ternary chalcogenide-based photoelectrochemical cells V. Surface analyses of the CuInX/sub 2//aqueous polysulfide interface (X = S, Se) by X-Ray photoelectron spectroscopy; absence of Se/S exchange in the CuInSe/sub 2//S /SUB n/ = system

    SciTech Connect (OSTI)

    Mirovsky, Y.; Cahen, D.; Polak, M.; Sawatzky, G.; Tenner, R.

    1985-05-01T23:59:59.000Z

    n-CuInS/sub 2/ and n-CuInSe/sub 2/ were subjected to surface analyses by x-ray photoelectron and Auger electron spectroscopy, after their use as photoanodes in polysulfide solutions. For CuInS/sub 2/ samples that had a poor (ca. 2%) conversion efficiency, a rather heterogeneous surface was found, with patches rich in In, which is probably present mainly as oxide. Some CuO was found as well, although the top layer was depleted in Cu, compared to a reference sample. More efficient (ca. 5%) samples showed a more homogeneous surface and even stronger Cu depletion. These changes are ascribed to additional surface treatments, viz., dipping in hot KCN solution and thermal oxidation o the resultant etched surface. For CuInSe/sub 2/ samples, no significant exchange of lattice Se by S from the polysulfide solution is seen, in sharp contrast to what is observed for CdSe or CdIn/sub 2/Se/sub 4/. If sulfur is found, its presence could be correlated with the spurious occurrence of Cd (used as dopant) or Ag (used for the ohmic back contact). Cu depletion also occur near the surface of the diselenide after use in polysulfide solution. Most of the remaining In seems to occur in indiu oxide and/or indium selenide. Cu/sub 2/ was found neither here nor on the surface of the more efficient disulfide sample. It is suggested that the occurrence of an indium oxide top layer, aided by thermal oxidation of the electrode in the case o CuInSe/sub 2/, has a beneficial effect on electrode performance.

  15. Structural and dynamical properties of Bridgman-grown CdSe[subscript x]Te[subscript 1?x] (0alloys

    E-Print Network [OSTI]

    Talwar, Devki N.

    Measurements of the Raman scattering and extended x-ray-absorption fine-structure (EXAFS) spectroscopy are reported on a series of Bridgman-grown zinc-blende CdTe[subscript 1?x]Se[subscript x] (0.35 ? x > 0.05) ternary ...

  16. Transition threshold in Ge{sub x}Sb{sub 10}Se{sub 90?x} glasses

    SciTech Connect (OSTI)

    Wei, Wen-Hou [Department of Applied Physics, Chongqing University, Chongqing 401331 (China); Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia); Fang, Liang, E-mail: lfang@cqu.edu.cn [Department of Applied Physics, Chongqing University, Chongqing 401331 (China); Shen, Xiang [Laboratory of Infrared Material and Devices, Advanced Technology Research Institute, Ningbo University, Ningbo 315211 (China); Wang, Rong-Ping [Centre for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS), Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200 (Australia)

    2014-03-21T23:59:59.000Z

    Ge{sub x}Sb{sub 10}Se{sub 90?x} glasses with Ge content from 7.5 to 32.5?at.?% have been prepared by melt-quench technique, and the physical parameters including glass transition temperature (T{sub g}), density (?), compactness (C), shear elastic moduli (C{sub s}), compression elastic moduli (C{sub c}), refractive index (n), and optical bandgap (E{sub g}) have been investigated. While all these physical parameters show threshold behavior in the glass with a chemically stoichiometric composition. Raman spectra analysis also indicates that, with increasing Ge content, Se-chains or rings gradually disappear until all Se-atoms are consumed in the glass with a chemically stoichiometric composition. With further increasing Ge content, homopolar Ge-Ge and Sb-Sb bonds are formed and the chemical order in the glasses is violated. The threshold behavior of the physical properties in the Ge{sub x}Sb{sub 10}Se{sub 90?x} glasses can be traced to demixing of networks above the chemically stoichiometric composition.

  17. Investigations on the StranskiKrastanow growth of CdSe quantum dots D. Schikora,a)

    E-Print Network [OSTI]

    Nabben, Reinhard

    , respectively. Recording clear resolved RHEED oscillations in combination with phase-locked epi- taxy, the Cd type B islands are correlated with a phase transition via a Stranski­Krastanow growth process of about 15 mW as excitation source. The CdSe QD samples grown in this study show typical structural

  18. Vegetation and climate dynamics during the early Middle Miocene from Lake Sinj (Dinaride Lake System, SE Croatia)

    E-Print Network [OSTI]

    Jiménez-Moreno, Gonzalo

    System, SE Croatia) Gonzalo Jiménez-Moreno a, , Oleg Mandic b , Mathias Harzhauser b , Davor Paveli c of Zagreb, Pierottijeva 6, HR-10000 Zagreb, Croatia A B S T R A C TA R T I C L E I N F O Article history 2008 Keywords: pollen vegetation climate change Miocene Croatia Pollen data from sediments from

  19. Green synthesis of highly efficient CdSe quantum dots for quantum-dots-sensitized solar cells

    SciTech Connect (OSTI)

    Gao, Bing; Shen, Chao; Zhang, Mengya; Yuan, Shuanglong; Yang, Yunxia, E-mail: yangyunxia@ecust.edu.cn, E-mail: grchen@ecust.edu.cn; Chen, Guorong, E-mail: yangyunxia@ecust.edu.cn, E-mail: grchen@ecust.edu.cn [Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237 (China); Zhang, Bo [Department of Physics, East China University of Science and Technology, Shanghai 200237 (China)

    2014-05-21T23:59:59.000Z

    Green synthesis of CdSe quantum dots for application in the quantum-dots-sensitized solar cells (QDSCs) is investigated in this work. The CdSe QDs were prepared with glycerol as the solvent, with sharp emission peak, full width at half maximum around 30?nm, and absorption peak from 475?nm to 510?nm. The reaction is environmental friendly and energy saving. What's more, the green synthesized CdSe QDs are coherence to the maximum remittance region of the solar spectrum and suitable as sensitizers to assemble onto TiO{sub 2} electrodes for cell devices application. What's more, the dynamic procedure of the carriers' excitation, transportation, and recombination in the QDSCs are discussed. Because the recombination of the electrons from the conduction band of TiO{sub 2}'s to the electrolyte affects the efficiency of the solar cells greatly, 3-Mercaptopropionic acid capped water-dispersible QDs were used to cover the surface of TiO{sub 2}. The resulting green synthesized CdSe QDSCs with Cu{sub 2}S as the electrode show a photovoltaic performance with a conversion efficiency of 3.39%.

  20. Wind profile above the surface boundary layer S.-E. Gryning (1), E. Batchvarova (2) and B. Brmmer (3)

    E-Print Network [OSTI]

    Wind profile above the surface boundary layer S.-E. Gryning (1), E. Batchvarova (2) and B. Brümmer in predictions of the wind profile in the lowest hundreds me- ters of the atmosphere, being connected to the general increase in height of structures such as bridges, high houses and wind turbines. The hub height

  1. Emplacement in an extensional setting of the Mont LozreBorne granitic complex (SE France) inferred from

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Emplacement in an extensional setting of the Mont Lozère­Borne granitic complex (SE France of the Late Hercynian Mont Lozère­Borne granitic complex (French Massif Central), which consists of several carried out to characterize the internal fabrics of the granitic plutons. Throughout the Pont

  2. Journal of Crystal Growth 310 (2008) 29872994 Reaction kinetics of CuGaSe2 formation from

    E-Print Network [OSTI]

    Anderson, Timothy J.

    2008-01-01T23:59:59.000Z

    of polycrystalline thin-film Cu(InxGa1Àx)Se2 (CIGS) solar cells achieved over the past several decades appears. Copper gallium diselenide; B3. Solar cells 1. Introduction The continuous improvement in the efficiency for the top cell in a CIGS tandem structure [2­4], given its suitable band gap energy (1.68 eV), process

  3. Band-gap grading in Cu(In,Ga)Se2 solar cells M. Gloeckler and J. R. Sites

    E-Print Network [OSTI]

    Sites, James R.

    Band-gap grading in Cu(In,Ga)Se2 solar cells M. Gloeckler and J. R. Sites Department of Physics solar cells, and some researchers have asserted that these fields can enhance performance to show that (1) there can be a beneficial effect of grading, (2) in standard thick- ness CIGS cells

  4. Effect of Ga content on defect states in CuIn1xGaxSe2 photovoltaic devices

    E-Print Network [OSTI]

    Rockett, Angus

    gaps for single junction solar cells expected to be around 1.4 eV.2 This corresponds to a Ga fraction x gap of CuIn1 xGaxSe2 CIGS . This technique is sensitive to opti- cal absorption in the active layer CIGS. Photovoltaic devices based on thin polycrystalline CIGS absorbers have achieved record lab

  5. Toward microscale Cu,,In,Ga...Se2 solar cells for efficient conversion and optimized material usage: Theoretical evaluation

    E-Print Network [OSTI]

    Boyer, Edmond

    develop a model to predict the performances of microscale Cu In,Ga Se2 CIGS solar cells under concentrated limiting factor for concentration on CIGS solar cells. This model can be used to extract the value associated with the operation of microscale CIGS solar cells are studied. The optimum concentration ratio

  6. The effect of Na in polycrystalline and epitaxial single-crystal CuIn1xGaxSe2

    E-Print Network [OSTI]

    Rockett, Angus

    online 15 December 2004 Abstract Na is found to improve the performance of Cu(In,Ga)Se2 (CIGS) solar the highest efficiency, exceeding 19%, of any thin film polycrystalline solar cell [1]. The diodes work well cells although the mechanism is not clear. This paper briefly reviews some of the observations on Na

  7. Investigation of defect properties in Cu(In,Ga)Se2 solar cells by deep-level transient spectroscopy

    E-Print Network [OSTI]

    Anderson, Timothy J.

    mechanisms (and hence the minority-carrier lifetimes) in CIGS solar cells. Zhang [1] has calculatedInvestigation of defect properties in Cu(In,Ga)Se2 solar cells by deep-level transient spectroscopy cells. Three solar cells developed using different absorber growth technologies were analyzed using DLTS

  8. Shear wave splitting in SE Brazil: an eect of active or fossil upper mantle ow, or both?

    E-Print Network [OSTI]

    Barruol, Guilhem

    Shear wave splitting in SE Brazil: an e¡ect of active or fossil upper mantle £ow, or both?§ Maggy, Brazil c Universidade de SaBrazil Received 26 the structure of the upper mantle beneath southeastern Brazil using teleseismic shear wave splitting

  9. Hole transport and doping states in epitaxial CuIn1 xGaxSe2 David J. Schroeder

    E-Print Network [OSTI]

    Rockett, Angus

    interest in renewable energy sources such as photovoltaic devices. CuIn1 xGaxSe2 CIGS /CdS hetero- junction there is no evidence of any degradation of performance in these devices.1­5 In light of the current belief in the Cu

  10. Photoemission Spectroscopy of Magnetic and Nonmagnetic Impurities on the Surface of the Bi2Se3 Topological Insulator

    E-Print Network [OSTI]

    Ohta, Shigemi

    Topological Insulator T. Valla,1,* Z.-H. Pan,1 D. Gardner,2 Y. S. Lee,2 and S. Chu3 1 Condensed Matter Physics; published 12 March 2012) Dirac-like surface states on surfaces of topological insulators have a chiral spin impurities on the surface of Bi2Se3, a model topological insulator. We reveal a remarkable insensitivity

  11. PHYSICAL REVIEW B 83, 165440 (2011) Electron interaction-driven insulating ground state in Bi2Se3 topological insulators

    E-Print Network [OSTI]

    Wang, Wei Hua

    2011-01-01T23:59:59.000Z

    topological insulators in the two-dimensional limit Minhao Liu,1 Cui-Zu Chang,1,2 Zuocheng Zhang,1 Yi Zhang,2 of ultrathin Bi2Se3 topological insulators with thickness from one quintuple layer to six quintuple layers that this unusual insulating ground state in the two-dimensional limit of topological insulators is induced

  12. Resumen--En este trabajo se describe la aplicacin de tcnicas de descubrimiento de reglas de descripcin de

    E-Print Network [OSTI]

    Granada, Universidad de

    Resumen-- En este trabajo se describe la aplicación de técnicas de descubrimiento de reglas de enseñanza a distancia Moodle. El objetivo consiste en extraer reglas que describan relaciones entre el uso a distancia, algoritmos evolutivos, reglas difusas. I. INTRODUCCI�N En la actualidad existe un incremento de

  13. Ctedra de Salud Laboral La Ctedra de Salud Laboral para la prevencin de riesgos derivados del trabajo se cre

    E-Print Network [OSTI]

    Oro, Daniel

    trabajo se creó en 2009 para continuar las actividades de la Cátedra Fundación MAPFRE en relación con la salud laboral (seguridad en el trabajo, higiene industrial, ergonomía y psicosociología aplicada) en los modalidades de enseñanza: semipresencial en el campus de la UIB y a distancia, sobre la plataforma telemática

  14. O final de ano se aproxima e as tempesta-des severas e as "chuvas contnuas" voltam

    E-Print Network [OSTI]

    Domingues, Margarete Oliveira

    , enquanto se investiu na melhoria de infra-estrutura de energia do prédio do CPTEC. Como fruto deste esforço IDD- análise de grande variedade de dados Brasil, que tem no CPTEC o seu centro mais meteorológicos

  15. Biologically programmed synthesis of core-shell CdSe/ZnS nanocrystalsw Shailendra Singh,ab

    E-Print Network [OSTI]

    Chen, Wilfred

    not only directs the nucleation of inorganic materials, but also controls the crystal structure and sizeBiologically programmed synthesis of core-shell CdSe/ZnS nanocrystalsw Shailendra Singh report of core-shell semiconductor nanocrystal synthesis using a peptide template. Type II

  16. Temperature dependent Raman scattering studies of three dimensional topological insulators Bi{sub 2}Se{sub 3}

    SciTech Connect (OSTI)

    Irfan, Bushra; Chatterjee, Ratnamala, E-mail: rmala@physics.iitd.ac.in [Department of Physics, Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India); Sahoo, Satyaprakash; Gaur, Anand P. S.; Ahmadi, Majid; Katiyar, Ram S. [Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931 (United States); Guinel, Maxime J.-F. [Department of Physics and Institute for Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931 (United States); Department of Chemistry, College of Natural Sciences, University of Puerto Rico, P.O. Box 70377, San Juan, Puerto Rico 00936-8377 (United States)

    2014-05-07T23:59:59.000Z

    We investigate the temperature dependent (83?K?T?523?K) frequency shift of 2A{sub g}{sup 1} and 1E{sub g}{sup 2} phonon modes in the three dimensional topological insulator Bi{sub 2}Se{sub 3}, using Raman spectroscopy. The high quality single crystals of Bi{sub 2}Se{sub 3} were grown using a modified Bridgman technique and characterized by Laue diffraction and high resolution transmission electron microscopy. A significant broadening in the line shape and red-shift in the frequencies were observed with increase in temperature. Polarized Raman scattering measurement shows a strong polarization effect of A{sub g}{sup 1} and A{sub g}{sup 2} phonon modes which confirms the good quality single crystals of Bi{sub 2}Se{sub 3}. Temperature co-efficient for A{sub 1g}{sup 1},?E{sub g}{sup 2}, and A{sub 1g}{sup 2} modes was estimated to be ?1.44?×?10{sup ?2}, ?1.94?×?10{sup ?2}, and ?1.95?×?10{sup ?2}?cm{sup ?1}?K, respectively. Our results shed light on anharmonic properties of Bi{sub 2}Se{sub 3}.

  17. Latest Ordovicianearliest Silurian acritarchs and chitinozoans from1 subsurface samples in Jebel Asba, Kufra Basin, SE Libya2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Asba, Kufra Basin, SE Libya2 3 Bindra Thusu1 , Syed Rasul1 , Florentin Paris2 , Guido Meinhold3 & Gas B.V., Dat Al Imad Complex Tower 5 Floor 13, P.O. Box 91651, Tripoli,15 Libya16 17 * Corresponding of the Kufra Basin,36 southeastern Libya, yielded well-diversified palynomorph assemblages with transparent and

  18. DETERMINATION OF BACK CONTACT BARRIER HEIGHT IN Cu(In,Ga)(Se,S)2 AND CdTe SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    DETERMINATION OF BACK CONTACT BARRIER HEIGHT IN Cu(In,Ga)(Se,S)2 AND CdTe SOLAR CELLS Galymzhan T-contact metallization. The input data is the current- voltage (J-V) curves for the solar cell measured over a range point technique and apply it to specific solar-cell examples. The range of Jt that can be practically

  19. Peer-reviewed Publications in 2008 1. Bellinger BJ, Underwood GJC, Ziegler SE and Gretz MR (2008) The

    E-Print Network [OSTI]

    Peer-reviewed Publications in 2008 1. Bellinger BJ, Underwood GJC, Ziegler SE and Gretz MR (2008-inflammatory activities of a new class of 5-glycylamino-2-substituted-phenyl-1,3-dioxacycloalkanes. Bioorganic & Medicinal, Korea; Sept.28-Oct. 1, 2008; pg. 46-51. 5. Busov VB, Brunner AM and Strauss SH (2008) Genes for control

  20. in: D. E. Dobbs, M. Fontana, S.-E. Kabbaj (eds.), Advances in Commutative Ring Theory (Fes III Conf. 1997)

    E-Print Network [OSTI]

    Frisch, Sophie

    , which shows r to be invertible.) This prompts the question how many functions on R are representablein: D. E. Dobbs, M. Fontana, S.-E. Kabbaj (eds.), Advances in Commutative Ring Theory (Fes III Conf. 1997) Lecture Notes in Pure and Appl. Mathematics 205, Dekker 1999, pp 323­336. POLYNOMIAL FUNCTIONS

  1. in: D. E. Dobbs, M. Fontana, S.-E. Kabbaj (eds.), Advances in Commutative Ring Theory (Fes III Conf. 1997)

    E-Print Network [OSTI]

    Frisch, Sophie

    + . .+.anrn-1 )r, which shows r to be invertible.) This prompts the question how many functions on R in: D. E. Dobbs, M. Fontana, S.-E. Kabbaj (eds.), Advances in Commutative Ring Theory (Fes III-336. POLYNOMIAL FUNCTIONS ON FI NITE COMMUTATIVE RI NGS

  2. Ab initio molecular-dynamics study of the structural, vibrational, and electronic properties of glassy GeSe 2

    E-Print Network [OSTI]

    Drabold, David

    Ab initio molecular-dynamics study of the structural, vibrational, and electronic properties We present results of an ab initio molecular-dynamics study of glassy GeSe2 using a 216 atom model static structure factors, and ring structures. The total static structure factor and first sharp

  3. OPTIMIZATION STUDY OF COPPER PRECURSORS FOR HIGH QUALITY CuInSe2 NANOPARTICLES BY WET CHEMICAL ROUTE

    E-Print Network [OSTI]

    Anderson, Timothy J.

    of the most promising material system for thin film photovoltaics owing to their unique structural, respectively. The synthesis process was optimized to grow 20 to 150 nm sized nanostructures of CuInSe2 inherent merits in reducing the cost per watt of the fabricated PV modules. Various size, shape

  4. Presentacin del ISO El Instituto de Sntesis Orgnica (ISO), se constituye como un Instituto Universitario de Investigacin en

    E-Print Network [OSTI]

    Escolano, Francisco

    Presentación del ISO El Instituto de Síntesis Orgánica (ISO), se constituye como un Instituto. El ISO está implicado también en actividades docentes referidas a enseñanzas en un Programa de de sus competencias. El ISO fomentará la relación con otras entidades públicas y privadas

  5. BIOTECHNOL. & BIOTECHNOL. EQ. 24/2010/SE SECOND BALKAN CONFERENCE ON BIOLOGY SPECIAL EDITION/ON-LINE 21-23 MAY 2010, PLOVDIV

    E-Print Network [OSTI]

    Mollov, Ivelin Aldinov

    263 BIOTECHNOL. & BIOTECHNOL. EQ. 24/2010/SE SECOND BALKAN CONFERENCE ON BIOLOGY SPECIAL EDITION #12;264 BIOTECHNOL. & BIOTECHNOL. EQ. 24/2010/SE SECOND BALKAN CONFERENCE ON BIOLOGY SPECIAL EDITION

  6. High-pressure single-crystal X-ray diffraction of Tl{sub 2}SeO{sub 4}

    SciTech Connect (OSTI)

    Grzechnik, Andrzej [Departamento de Fisica de la Materia Condensada, Universidad del Pais Vasco, E-48080 Bilbao (Spain)], E-mail: andrzej.grzechnik@ehu.es; Breczewski, Tomasz; Friese, Karen [Departamento de Fisica de la Materia Condensada, Universidad del Pais Vasco, E-48080 Bilbao (Spain)

    2008-11-15T23:59:59.000Z

    The effect of pressure on the crystal structure of thallium selenate (Tl{sub 2}SeO{sub 4}) (Pmcn, Z=4), containing the Tl{sup +} cations with electron lone pairs, has been studied with single-crystal X-ray diffraction in a diamond anvil cell up to 3.64 GPa at room temperature. No phase transition has been observed. The compressibility data are fitted by a Murnaghan equation of state with the zero-pressure bulk modulus B{sub 0}=29(1) GPa and the unit-cell volume at ambient pressure V{sub 0}=529.6(8) A{sup 3} (B'=4.00). Tl{sub 2}SeO{sub 4} is the least compressible in the c direction, while the pressure-induced changes of the a and b lattice parameters are quite similar. These observations can be explained by different pressure effects on the nine- and 11-fold coordination polyhedra around the two non-equivalent Tl atoms. The SeO{sub 4}{sup 2-} tetrahedra are not rigid units and become more distorted. Their contribution to the compressibility is small. The effect of pressure on the isotypical oxide materials A{sub 2}TO{sub 4} with the {beta}-K{sub 2}SO{sub 4} structure is discussed. It appears that the presence of electron lone pairs on the Tl{sup +} cation does not seem to influence the compressibility of Tl{sub 2}SeO{sub 4}. - Graphical abstract: Pressure dependence of normalized lattice parameters and unit-cell volumes in Tl{sub 2}SeO{sub 4} (Pmcn, Z=4). The solid line is the Murnaghan equation of state.

  7. 6 mW and 30 mW laser threshold for respectively 1st Brillouin Stokes order in a Ge10As24Se68 chalcogenide fiber.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    fiber made of chalcogenide glass to make a BFL [5]. A 3 meter long suspended-core AsSe chalcogenide have replaced the suspended-core chalcogenide AsSe previously used by a microstructured Ge10As24Se68 diameter of the AsSe suspended- core fiber is 240 µm and the core diameter d is 3.8 µm. The mode effective

  8. H-bond network dynamics of the solid-state protonic conductor Rb3H(SeO4)2 from FTIR and IINS measurements

    E-Print Network [OSTI]

    Schuck, Götz

    that the identified modes (m1[SeO4]2À , m1[HSeO4]1À , m3[SeO4]2À and m3[HSeO4]1À ) can be classified in two groups: alternation between the association of the monomers [HSeO4]1À and [SeO4]2À resulting in the dimer [H(SeO4)2]3À

  9. Chemical order in Ge{sub x}As{sub y}Se{sub 1-x-y} glasses probed by high resolution X-ray photoelectron spectroscopy

    SciTech Connect (OSTI)

    Xu, S. W. [Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); College of Applied Sciences, Beijing University of Technology, Beijing100124 (China); Wang, R. P.; Luther-Davies, B. [Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200 (Australia); Kovalskiy, A. [Department of Physics and Astronomy, Austin Peay State University, Clarksville, Tennessee 37043 (United States); Miller, A. C.; Jain, H. [Department of Materials Science and Engineering, Lehigh University, 5 East Packer Avenue, Bethlehem, Pennsylvania 18015-3195 (United States)

    2014-02-28T23:59:59.000Z

    We have measured high-resolution x-ray photoelectron spectra of Ge{sub x}As{sub y}Se{sub 1-x-y} glasses with a mean coordination number (MCN) from 2.2 to 2.78. The valence band spectra showed that a number of Se–Se–Se trimers can be found in Se-rich samples, whilst multiband features induced by phase separation can be observed in extremely Se-poor samples. When the Ge, As, and Se 3d spectra were decomposed into several doublets, which correspond, respectively, to different chemical environments, the perfect AsSe{sub 3/2} pyramidal and GeSe{sub 4/2} tetrahedral structures in Se-rich samples gradually evolved into defect structures, including As–As and Ge–Ge homopolar bonds, with increasing Ge and As concentrations. Two transition-like features were found at MCN?=?2.5 and 2.64–2.72 that correspond first to the disappearance of Se-chains in the glass network and, subsequently, destruction of the perfect GeSe{sub 4/2} tetrahedral structures, respectively.

  10. Three-dimensional topological insulators Bi{sub 2}Te{sub 3}, Bi{sub 2}Se{sub 3}, and Bi{sub 2}Te{sub 2}Se - a microwave spectroscopy study

    SciTech Connect (OSTI)

    Wolos, A. [Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland and Faculty of Physics, University of Warsaw, ul Hoza 69, 00-681 Warsaw (Poland); Drabinska, A.; Szyszko, S.; Kaminska, M. [Faculty of Physics, University of Warsaw, ul Hoza 69, 00-681 Warsaw (Poland); Strzelecka, S. G.; Hruban, A.; Materna, A.; Piersa, M. [Institute of Electronic Materials Technology, ul. Wolczynska 133, 01-919 Warsaw (Poland)

    2013-12-04T23:59:59.000Z

    We present results of investigations of three-dimensional topological insulators from a family of bismuth compounds performed in electron spin resonance spectrometer. Next to the standard spin resonance spectra in Bi{sub 2}Se{sub 3} originating from bulk conduction electrons (g{sub Verbar;} = 27.5 ± 0.1 and g{sub ?} = 19.5 ± 0.1), we observed also cyclotron resonance due to topological surface states in Bi{sub 2}Te{sub 3} and non-resonant signal related to weak anti-localization in Bi{sub 2}Te{sub 2}Se. The analysis of the cyclotron resonance signal yields low Fermi velocity equal to 3250 m/s in Bi{sub 2}Te{sub 3}. The phase coherence length determined from weak anti-localization signal equals to 550 nm at low temperatures in Bi{sub 2}Te{sub 2}Se. Relation of the signals to bulk, topological surface or two-dimensional quantum well states is discussed and where possible indicated.

  11. Application of Single Wall Carbon Nanotubes as Transparent Electrodes in Cu(In,Ga)Se2-Based Solar Cells: Preprint

    SciTech Connect (OSTI)

    Contreras, M.; Barnes, T.; van de Lagemaat, J.; Rumbles, G.; Coutts, T. J.; Weeks, C.; Glatkowski, P.; Levitsky, I.; Peltola, J.

    2006-05-01T23:59:59.000Z

    We present a new thin-film solar cell structure in which the traditional transparent conductive oxide electrode (ZnO) is replaced by a transparent conductive coating consisting of a network of bundled single-wall carbon nanotubes. Optical transmission properties of these coatings are presented in relation to their electrical properties (sheet resistance), along with preliminary solar cell results from devices made using CuIn1-xGaxSe2 thin-film absorber materials. Achieving an energy conversion efficiency of >12% and a quantum efficiency of {approx}80% demonstrate the feasibility of the concept. A discussion of the device structures will be presented considering the physical properties of the new electrodes comparing current-voltage results from the new solar cell structure and those from standard ZnO/CdS/Cu(In,Ga)Se2/Mo solar cells.

  12. Large positive magnetoresistance effects in the dilute magnetic semiconductor (Zn,Mn)Se in the regime of electron hopping

    SciTech Connect (OSTI)

    Jansson, F., E-mail: fjansson@abo.fi; Wiemer, M.; Gebhard, F.; Baranovskii, S. D. [Department of Physics and Material Sciences Center, Philipps-University, D-35032 Marburg (Germany); Nenashev, A. V. [Institute of Semiconductor Physics, 630090 Novosibirsk (Russian Federation); Novosibirsk State University, 630090 Novosibirsk (Russian Federation); Petznick, S.; Klar, P. J. [Institute of Experimental Physics I, Justus-Liebig-University Giessen, D-35392 Giessen (Germany); Hetterich, M. [Institut für Angewandte Physik and Center for Functional Nanostructures (CFN), Universität Karlsruhe, D-76131 Karlsruhe (Germany)

    2014-08-28T23:59:59.000Z

    Magnetoresistance in dilute magnetic semiconductors is studied in the hopping transport regime. Measurements performed on Cl-doped Zn{sub 1–x}Mn{sub x}Se with x?Se with donor concentrations below the metal–insulator transition.

  13. Synthesis, Crystal Structure, and Magnetism of ?-Fe1.00(2)Se1.00(3) Single Crystals

    SciTech Connect (OSTI)

    Petrovic, C.; Billinge, S.

    2011-06-20T23:59:59.000Z

    Understanding iron-based superconductors requires high-quality impurity-free single crystals. So far they have been elusive for {beta}-FeSe and extraction of intrinsic materials properties has been compromised by several magnetic-impurity phases. Here, we report synchrotron-clean {beta}-FeSe superconducting single crystals grown via LiCl/CsCl flux method. Phase purity yields evidence for a defect-induced weak ferromagnetism that coexists with superconductivity below T{sub c}. In contrast to Fe{sub 1+y}Te-based superconductors, our results reveal that the interstitial Fe(2) site is not occupied and that all contribution to density of states at the Fermi level must come from in-plane Fe(1).

  14. Comment prsenter une demande afin d'obtenir un nouveau visa de rsident temporaire ? (demandeurs se trouvant au Canada)

    E-Print Network [OSTI]

    Parrott, Lael

    se trouvant au Canada) Si vous vous trouvez actuellement au Canada en vertu d'un statut valide de présenter votre demande depuis le Canada si vous répondez aux critères suivants : Vous êtes un résident temporaire (étudiant ou travailleur étranger temporaire seulement) admis légalement au Canada et vous

  15. Depositional environments, diagenesis, and porosity development of Mississippian Chappel carbonates at Thrash and Quanah SE Fields, Hardeman County, Texas

    E-Print Network [OSTI]

    He, Shiliang T.

    1989-01-01T23:59:59.000Z

    ) . This shale, rich in organic matter, thins to the west and is considered to be the potential source rock for the Mississippian reservoirs (Montgomery, 1984) . Later active tectonics resulted in input of clastics to the edges of the basin from basement... Formation at Thrash and Quanah SE Fields is characterized by deep-water limestones with local skeletal buildups on a low-energy, distally-steepened ramp. Three depositional environments have been recognized from these lv rocks: 1) the deep ? water...

  16. OXYDATION COMPARE DU NIOBIUM ET D'UN ALLIAGE (P 353 M) A BA SE DE NIOBIUM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    519 OXYDATION COMPARÉE DU NIOBIUM ET D'UN ALLIAGE (P 353 M) A BA SE DE NIOBIUM E. FRIES, C. MARHIC'oxydation comparée du Niobium pur et d'un alliage à base de Niobium de composition suivante : W V Ti Zr C 10 % 1 100 h. Dans les deux cas (niobium et alliage) on a mis en évidence la présence de trois formes de l

  17. A Basis Set of Re6Se8 Cluster Building Blocks and Demonstration of Their Linking Capability: Directed Synthesis

    E-Print Network [OSTI]

    of 4 with AgBF4 in dichloromethane/acetonitrile gave cis-[Re6Se8(PEt3)4(MeCN)2]2+ (7); a similar at 180 °C for 24 h under dynamic vacuum, the compounds [8]X2 (X ) BF4 -, SbF6 -) lose acetonitrile, which can give only one logical product upon deligation of acetonitrile. The synthesis concept

  18. friction se boratoire : Lab

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    , dans lequ apport à la sur gout prononcé DEA) qui vou e : OUI NON Plots micrométriq ncepts Fondam sique

  19. Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the National 93-4 AcquisitionO 231.1B

  20. PHaSe-EFRC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science,SpeedingWu,IntelligenceYou are hereNewsOur site willRise

  1. Temperature and composition phase diagram in the iron-based ladder compounds Ba 1 - x Cs x Fe 2 Se 3

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hawai, Takafumi; Nambu, Yusuke; Ohgushi, Kenya; Du, Fei; Hirata, Yasuyuki; Avdeev, Maxim; Uwatoko, Yoshiya; Sekine, Yurina; Fukazawa, Hiroshi; Ma, Jie; Chi, Songxue; Ueda, Yutaka; Yoshizawa, Hideki; Sato, Taku J.

    2015-05-01T23:59:59.000Z

    We investigated the iron-based ladder compounds (Ba,Cs)Fe?Se?. Their parent compounds BaFe?Se? and CsFe?Se? have different space groups, formal valences of Fe, and magnetic structures. Electrical resistivity, specific heat, magnetic susceptibility, x-ray diffraction, and powder neutron diffraction measurements were conducted to obtain a temperature and composition phase diagram of this system. Block magnetism observed in BaFe?Se? is drastically suppressed with Cs doping. In contrast, stripe magnetism observed in CsFe?Se? is not so fragile against Ba doping. A new type of magnetic structure appears in intermediate compositions, which is similar to stripe magnetism of CsFe?Se?, but interladder spin configuration is different. Intermediate compounds show insulating behavior, nevertheless a finite T-linear contribution in specific heat was obtained at low temperatures.

  2. Thermoelectric properties of M{sub 2}Mo{sub 6}Se{sub 6} (M =Tl,In)

    SciTech Connect (OSTI)

    Verebelyi, D.T.; Payne, J.E.; Tessema, G.X.; Mengistu, E.

    1997-07-01T23:59:59.000Z

    The authors have measured the thermal conductivity of Tl{sub 2}Mo{sub 6}Se{sub 6}, a quasi-one dimensional conductor which belongs to the family of M{sub 2}Mo{sub 6}X{sub 6} linear chain compounds. Using these results and the measurements of the Seebeck coefficient and the electrical conductivity the authors estimate the dimensionless figure of merit to be of the order of 0.08. This result suggest that this compound and other related compounds are good potential TE.

  3. Properties of electrospun CdS and CdSe filled poly(methyl methacrylate) (PMMA) nanofibres

    SciTech Connect (OSTI)

    Mthethwa, T.P. [University of Johannesburg, Department of Chemical Technology, P.O. Box 17011, Doornfontein 2028 (South Africa)] [University of Johannesburg, Department of Chemical Technology, P.O. Box 17011, Doornfontein 2028 (South Africa); Moloto, M.J., E-mail: mmoloto@uj.ac.za [University of Johannesburg, Department of Chemical Technology, P.O. Box 17011, Doornfontein 2028 (South Africa); De Vries, A.; Matabola, K.P. [CSIR Materials Science and Manufacturing, 4 Gomery avenue, Summerstrand, Port Elizabeth 6000 (South Africa)] [CSIR Materials Science and Manufacturing, 4 Gomery avenue, Summerstrand, Port Elizabeth 6000 (South Africa)

    2011-04-15T23:59:59.000Z

    Graphical abstract: SEM images of CdS/PMMA showing coiling as loading of CdS nanoparticles is increased. Thermal stability is increased with increase in %loading of both CdS and CdSe nanoparticles. Research highlights: {yields} TOPO-capped CdS and HDA-capped CdSe nanoparticles were synthesized and fully characterized. {yields} The nanoparticles were mixed with the polymer, PMMA using electrospinning technique using 2, 5 and 10% weight loadings. {yields} The mixture was spun to produce fibres with optical and thermal properties showing significant change and also the increase in loading causing bending or spiraling. {yields} Both TEM images for nanoparticles and SEM for fibres shows the morphology and sizes of the particles. -- Abstract: Electrospinning technique was used to fabricate poly(methyl methacrylate) (PMMA) fibres incorporating CdS and CdSe quantum dots (nanoparticles). Different nanoparticle loadings (2, 5 and 10 wt% with respect to PMMA) were used and the effect of the quantum dots on the properties of the fibres was studied. The optical properties of the hybrid composite fibres were investigated by photoluminescence and UV-vis spectrophotometry. Scanning electron microscopy (SEM), X-ray diffraction and FTIR spectrophotometry were also used to investigate the morphology and structure of the fibres. The optical studies showed that the size-tunable optical properties can be achieved in the polymer fibres by addition of quantum dots. SEM images showed that the morphologies of the fibres were dependent on the added amounts of quantum dots. A spiral type of morphology was observed with an increase in the concentration of CdS and CdSe nanoparticles. Less beaded structures and bigger diameter fibres were obtained at higher quantum dot concentrations. X-ray diffractometry detected the amorphous peaks of the polymer and even after the quantum dots were added and the FTIR analysis shows that there was no considerable interaction between the quantum dots and the polymer fibres at low concentration of quantum dots however at higher concentrations some interactions were observed which shows that QDs were present on the surfaces of the fibres.

  4. Synthesis and crystal structure of layered chalcogenides [KCuFeS[sub 2] and KCuFeSe[sub 2

    SciTech Connect (OSTI)

    Mujica, C.; Paez, J.; Llanos, J. (Univ. Catolica del Norte, Antofagasta (Chile). Dept. de Quimica)

    1994-03-01T23:59:59.000Z

    The new layer chalcogenides KCuFeS[sub 2] and KCuFeSe[sub 2] have been prepared from the copper iron chalcogenide and potassium carbonate. Both phases crystallize with tetragonal symmetry, in the space group I4/mmm (Nr 139) with a=383.7 (1) pm, c=1338.4 (4) pm and a=397.9 (2) pm, c = 1378.7 (54) pm respectively in the ThCr[sub 2]Si[sub 2]-type structure. The chalcogen atoms form bidimensional layers of edge sharing pyramids. Copper and iron are statistically distributed in tetrahedral sites. The potassium ions are placed in cubic sites between the layers.

  5. Conductance modulation in topological insulator Bi{sub 2}Se{sub 3} thin films with ionic liquid gating

    SciTech Connect (OSTI)

    Son, Jaesung; Banerjee, Karan; Yang, Hyunsoo, E-mail: eleyang@nus.edu.sg [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore)] [Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore); Brahlek, Matthew; Koirala, Nikesh; Oh, Seongshik [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854 (United States)] [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854 (United States); Lee, Seoung-Ki [School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of) [School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of); School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of); Ahn, Jong-Hyun [School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)] [School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749 (Korea, Republic of)

    2013-11-18T23:59:59.000Z

    A Bi{sub 2}Se{sub 3} topological insulator field effect transistor is investigated by using ionic liquid as an electric double layer gating material, leading to a conductance modulation of 365% at room temperature. We discuss the role of charged impurities on the transport properties. The conductance modulation with gate bias is due to a change in the carrier concentration, whereas the temperature dependent conductance change is originated from a change in mobility. Large conductance modulation at room temperature along with the transparent optical properties makes topological insulators as an interesting (opto)electronic material.

  6. Electrically driven single photon emission from a CdSe/ZnSSe single quantum dot at 200?K

    SciTech Connect (OSTI)

    Quitsch, Wolf; Kümmell, Tilmar; Bacher, Gerd [Werkstoffe der Elektrotechnik and CENIDE, Universität Duisburg-Essen, Bismarckstraße 81, 47057 Duisburg (Germany); Gust, Arne; Kruse, Carsten; Hommel, Detlef [Institut für Festkörperphysik, Universität Bremen, Otto-Hahn-Allee 1, 28334 Bremen (Germany)

    2014-09-01T23:59:59.000Z

    High temperature operation of an electrically driven single photon emitter based on a single epitaxial quantum dot is reported. CdSe/ZnSSe/MgS quantum dots are embedded into a p-i-n diode architecture providing almost background free excitonic and biexcitonic electroluminescence from individual quantum dots through apertures in the top contacts. Clear antibunching with g{sup 2}(??=?0)?=?0.28?±?0.20 can be tracked up to T?=?200?K, representing the highest temperature for electrically triggered single photon emission from a single quantum dot device.

  7. Strain-Dependent Photoluminescence Behavior of CdSe/CdS Nanocrystals with Spherical, Linear, and Branched Topologies

    SciTech Connect (OSTI)

    Choi, Charina L.; Koski, Kristie J.; Sivasankar, Sanjeevi; Alivisatos, A. Paul

    2009-08-13T23:59:59.000Z

    The photoluminescence of CdSe/CdS core/shell quantum dots, nanorods, and tetrapods is investigated as a function of applied hydrostatic and non-hydrostatic pressure. The optoelectronic properties of all three nanocrystal morphologies are affected by strain. Furthermore, it is demonstrated that the unique morphology of a tetrapod is highly sensitive to non-isotropic stress environments. Seeded tetrapods can thereby serve as an optical strain gauge, capable of measuring forces on the order of nanonewtons. We anticipate that a nanocrystal strain gauge with optical readout will be useful for applications ranging from sensitive optomechanical devices to investigations of biomechanical processes.

  8. Predicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell interfaces and implications for improving performance

    E-Print Network [OSTI]

    Goddard III, William A.

    Predicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell (2014) Predicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell of CIGS (Cu(In,Ga)Se2) based solar cells (20.8% efficiency) makes them promising candidate photovoltaic

  9. 87Rb and 85Rb NQR study of phase transitions in RbH3(SeO3)2 J. Seliger, V. 017Dagar, R. Blinc

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    521 87Rb and 85Rb NQR study of phase transitions in RbH3(SeO3)2 J. Seliger, V. 017Dagar, R. Blinc J résonance quadrupolaire de 85Rb et 87Rb dans le composé RbH3(SeO3)2 par une technique de double résonance SeO3. Nous avons confirmé l'existence d'une phase incommensurable intermédiaire entre Tc et Tc + 4 K

  10. TOPOLOGIA 1 e Topologia per Fisica 22/6/2009 1. Esercizio. Se X `e spazio topologico e Y `e un insieme, una funzione f : X Y

    E-Print Network [OSTI]

    Marconi, Umberto

    TOPOLOGIA 1 e Topologia per Fisica ­ 22/6/2009 1. Esercizio. Se X `e spazio topologico e Y `e un insieme, una funzione f : X Y `e detta localmente costante se per ogni p X esiste un intorno U di p in X tale che la restrizione f|U `e costante. Dimostrare che se X `e connesso, allora ogni f : X Y che sia

  11. Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells

    E-Print Network [OSTI]

    Sites, James R.

    1 Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells, Setagaya-ku, Tokyo 157-8572, Japan (Received ) KEYWORDS: ZnS buffer, Cu(In,Ga)Se2, thin-film solar cells alternative to CdS in polycrystalline thin-film Cu(In1-xGax)Se2 (CIGS) solar cells. Cells with efficiency

  12. DEVELOPMENT OF A NOVEL PRECURSOR FOR THE PREPARATION BY SELENIZATION OF HIGH EFFICIENCY CuInGaSe2/CdS THIN FILM SOLAR CELLS

    E-Print Network [OSTI]

    Romeo, Alessandro

    /CdS THIN FILM SOLAR CELLS N. Romeo1 , A. Bosio1 , V. Canevari2 , R. Tedeschi1 , S. Sivelli1 , A. Solar cells prepared by depositing in sequence on top of the CuInGaSe2 film 60 nm of CdS, 100 nm of pure(InGa)Se2, Thin Films, Selenization 1 INTRODUCTION CuInGaSe2 based solar cells exhibit the highest

  13. Quand la paix se construit sur l'oubli des dmobiliss : anciens gurilleros et anciens soldats dans la socit salvadorienne de l'aprs-guerre

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Quand la paix se construit sur l'oubli des démobilisés : anciens guérilleros et anciens soldats

  14. Influence of grain boundary modification on limited performance of wide bandgap Cu(In,Ga)Se{sub 2} solar cells

    SciTech Connect (OSTI)

    Raghuwanshi, M., E-mail: mohit.raghuwanshi@etu.univ-rouen.fr; Cadel, E.; Pareige, P.; Duguay, S. [Groupe de Physique des Materiaux (GPM), UMR 6634 CNRS, Université et INSA de Rouen, Avenue de l'Universite BP 12, 76801 Saint Etienne du Rouvray (France); Couzinie-Devy, F.; Arzel, L.; Barreau, N. [Institut des Materiaux Jean Rouxel (IMN), UMR 6502 CNRS, Université de Nantes, 2 rue de la Houssiniere BP 32229, 44322 Nantes cedex 3 (France)

    2014-07-07T23:59:59.000Z

    The reason why so-called wide-bandgap CuIn{sub 1?x}Ga{sub x}Se{sub 2} (CIGSe with x?>?0.4) based solar cells show hindered performance compared with theoretical expectations is still a matter of debate. In the present Letter, atom probe tomography studies of CuIn{sub 1?x}Ga{sub x}Se{sub 2} polycrystalline thin films with x varying from 0 to 1 are reported. These investigations confirm that the grain boundaries (GBs) of low gallium containing (x??0.8) are Cu-enriched compared with GI. For intermediate gallium contents (0.4?

  15. Visible Light Photoreduction of CO{sub 2} Using CdSe/Pt/TiO{sub 2} Heterostructured Catalysts

    SciTech Connect (OSTI)

    Wang, Congjun [Parsons Project Services, South Park, PA (United States); Thompson, Robert L. [Parsons Project Services, South Park, PA (United States); Baltrus, John [National Energy Technology Laboratory (NETL), Pittsburgh, PA, (United States); Matranga, Christopher [National Energy Technology Laboratory (NETL), Pittsburgh, PA, (United States)

    2010-08-01T23:59:59.000Z

    A series of CdSe quantum dot (QD)-sensitized TiO{sub 2} heterostructures have been synthesized, characterized, and tested for the photocatalytic reduction of CO{sub 2} in the presence of H{sub 2}O. Our results show that these heterostructured materials are capable of catalyzing the photoreduction of CO{sub 2} using visible light illumination (? > 420 nm) only. The effect of removing surfactant caps from the CdSe QDs by annealing and using a hydrazine chemical treatment have also been investigated. The photocatalytic reduction process is followed using infrared spectroscopy to probe the gas-phase reactants and gas chromatography to detect the products. Gas chromatographic analysis shows that the primary reaction product is CH{sub 4}, with CH{sub 3}OH, H{sub 2}, and CO observed as secondary products. Typical yields of the gas-phase products after visible light illumination (?>420 nm) were 48 ppm g{sup -1} h{sup -1} of CH{sub 4}, 3.3 ppm g{sup -1} h{sup -1} of CH{sub 3}OH (vapor), and trace amounts of CO and H{sub 2}.

  16. A Programming Logic for Java Bytecode Programs

    E-Print Network [OSTI]

    Quigley, C.L.

    Quigley,C.L. To appear in Proceedings of the 16th International Conference on Theorem Proving in Higher Order Logics, Lecture Notes in Computer Science Springer Verlag

  17. Musa hybrid cv. Blue Java (Cultivated) 3 

    E-Print Network [OSTI]

    James R. Manhart

    2011-08-10T23:59:59.000Z

    Natural hybrid zones provide opportunities to study a range of evolutionary phenomena from speciation to the genetic basis of fitness-related traits. Additionally, investing the structure of hybrid zones can provide valuable insight in the ecology...

  18. Musa hybrid cv. Blue Java (Cultivated) 

    E-Print Network [OSTI]

    James R. Manhart

    2011-08-10T23:59:59.000Z

    and photovoltaic technology. Far west Texas has some of the highest levels of solar insolation in the United States (see Appendix D). Coastal southern Texas, parts of western Texas, and the Texas Panhandle have class 3 or stronger winds on a scale of 1 (lowest... of photovoltaics can be traced to French physicist Alexandre Becquerel?s 1839 discovery of the photoelectric effect ? the conversion of light to electricity. Nearly 40 years later, in 1877, the first selenium solar cell was constructed. In the early 20th century...

  19. Tempo Excursions from Java to Jamaica

    E-Print Network [OSTI]

    Condit-Schultz, Nathaniel

    2012-01-01T23:59:59.000Z

    reaching all the way down to 40 bpm which is equivalent toIn the score the piece begins its spiral at 80 bpm but slowsto 56 bpm by measure 49 and then stays relatively stable for

  20. Nested Refinement Types for JavaScript /

    E-Print Network [OSTI]

    Chugh, Ravi

    2013-01-01T23:59:59.000Z

    Semantic Sub- typing with an SMT Solver. In InternationalNikolaj Bjørner. Z3: An Efficient SMT solver. In Tools andBy carefully coordinating SMT-based logical implication with