National Library of Energy BETA

Sample records for honorable dot harris

  1. Honors

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

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  2. Department of Energy's Dot Harris Honored for Blazing Path for Women |

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-in electricLaboratoryof Energy ElevenLG Refrigerator-Freezer

  3. Honor Roll of Donors University of California

    E-Print Network [OSTI]

    Martin, Gail

    Honor Roll of Donors University of California San Francisco School of Pharmacy 2005/2006 UCSF. Long Chair in Chain Pharmacy Practice Honor Roll of Donors July 1, 2005­June 30, 2006 The Class of 2009 at the 2005 White Coat Ceremony #12;Highlights 2005­2006 Honoring Harry Wm. Hind '39 At a spring

  4. Utah_k_harris

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

    Kirk Harris Site - Utah Wind Anemometer Loan Program Latitude: N. 38 deg. 26.4' Longitude: W. 112 deg. 3' Elevation: 5279' Placed in service: November 19, 2002 Removed from...

  5. Women @ Energy: Dot Harris | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyThe U.S.Lacledeutilities.Energy ThefullAssociate Director for Computation

  6. He Kupu Whakamahara Prince Harry

    E-Print Network [OSTI]

    Hickman, Mark

    He Kupu Whakamahara Prince Harry at UC Graduation highlights Canterbury's crusade May 2015 #12;E ng 2015 3 11Saving the endangered Kak. 19 6Prince Harry sweetens up the crowd. 10Mentor guides student

  7. SENIOR HONORS THESIS CONTRACT Honors Student Name: Student ID

    E-Print Network [OSTI]

    Lawrence, Rick L.

    SENIOR HONORS THESIS CONTRACT HONR 490 Honors Student Name: Student ID: Date Submitted: The Senior Honors Thesis is an independent research/creativity project that enables Honors students to synthesize. At the completion of the Senior Honors Thesis, a public presentation of your work is required. A copy of the thesis

  8. The Honorable LaDoris G. Harris | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann JacksonDepartment ofOffice|inWestMayBuildingTheEasements &A TenOutages1

  9. The Honorable Harold Rogers The Honorable Daniel K. Inouye

    Office of Environmental Management (EM)

    Washington, DC 20585 (enter date here, centered) The Honorable Harold Rogers The Honorable Daniel K. Inouye Chairman, Committee on Appropriations Chairman, Committee on...

  10. The Honorable Anthony Mosillo'

    Office of Legacy Management (LM)

    Washington,, DC 20585 The Honorable Anthony Mosillo' ', ' 6500 Niagara Square. 'Buffalo, New York 14202 Dear Mayor Mosillo: , ' ", Secretary of Energy Hazel, O'Leary has...

  11. The Honorable Ernest Moniz

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

    January 31, 2014 The Honorable Ernest Moniz Secretary of Energy 1000 Independence Ave. SW Washington DC 20585 Dear Mr. Secretary, Our organizations, representing the nation's...

  12. North Carolina Nuclear Profile - Harris

    U.S. Energy Information Administration (EIA) Indexed Site

    Harris" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

  13. Engineering Honors Thesis Manual

    E-Print Network [OSTI]

    Lightsey, Glenn

    1 Engineering Honors Thesis Manual Engineering Honors Program The University of Texas.200 * No thesis should cause pain and anguish. You should never be depressed over your thesis. If you are feeling in supervisors/second readers THESIS SYMPOSIUM 10 STANDARDS 11 GRADES, ORAL EXAMS, AND THESIS SUBMISSION 13

  14. Housing -Honors Financial Statements

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Housing - Honors Financial Statements June 30, 2013 #12;FLORIDA ATLANTIC UNIVERSITY HOUSING SYSTEM University's Housing Division's (Honors) financial performance provides an overview of the financial activities for the fiscal year ended June 30, 2013. Please read it in conjunction with Housing's financial

  15. Housing -Honors Financial Statements

    E-Print Network [OSTI]

    Fernandez, Eduardo

    Housing - Honors Financial Statements June 30, 2012 #12;FLORIDA ATLANTIC UNIVERSITY HOUSING SYSTEM University's Housing Division's (Honors) financial performance provides an overview of the financial activities for the fiscal year ended June 30, 2012. Please read it in conjunction with Housing's financial

  16. Pantex honors firefighters | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    NNSA Blog Pantex honors firefighters Pantex honors firefighters Pantex honored its fire department personnel on Friday in advance of National Emergency Medical Services...

  17. Completing an Honors Thesis in Visual Arts Honors Thesis Expectations

    E-Print Network [OSTI]

    Martinez, Tony R.

    Completing an Honors Thesis in Visual Arts Honors Thesis Expectations An Honors thesis scholarship in your chosen area. This means that your thesis will probably be the most involved thesis, but it will usually contain both a review of scholarship in the field, as well as your own

  18. 2014 Fall : Distinguished Honors Distinguished

    E-Print Network [OSTI]

    Kunkle, Tom

    : Distinguished Honors LAST_NAME FIRST_NAME MIDDLE_NAME HONORS Barry Kendall Kathleen Distinguished Barth Caitlin Brielen Hunter Distinguished Beck Morgan Elyse Distinguished Bednar Alexander Barrett Distinguished Bell

  19. NREL: Awards and Honors - News

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

    Honors NREL's Dan Arvizu Dr. Dan E. Arvizu was honored at the 16th annual Wirth Chair Sustainability Awards Luncheon in Denver today for his longtime leadership at the Energy...

  20. Harry Weerts | Argonne National Laboratory

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

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  1. Honors Thesis Approval Form Use this Honors Thesis Approval Form when preparing your Honors thesis for final departmental approval.

    E-Print Network [OSTI]

    Tholl, Dorothea

    Honors Thesis Approval Form Use this Honors Thesis Approval Form when preparing your Honors thesis with the final copy of your thesis to University Honors by the designated deadline. NOTE: Some departments have their own thesis approval form. Please check with the Honors Advisor in your department to determine if you

  2. Wirth Chair Honors NREL's Dan Arvizu | Awards and Honors | NREL

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

    of Colorado Denver's School of Public Affairs, annually honors someone who has made an impact on environmental, economic and social sustainability issues. The Wirth Chair is...

  3. VIRGINIA TECH CORPS OF CADETS HONOR MANUAL

    E-Print Network [OSTI]

    those who do." 1 January 2015 #12;i TABLE OF CONTENTS CHAPTER 1: THE HONOR CONCEPT................................................................................... 1 101. THE HONOR CONCEPT................................................................................................................ 8 204. VICE CHIEF FOR EDUCATION (VCE

  4. University Honors Program Student Guidelines for the University Honors Capstone

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    . Is the study qualitative or quantitative? Is it performance art? Are you using primary or secondary sources product of the Honors Capstone experience may be a senior thesis, a computer program, a video, or another not procrastinate. Step 5. Submit your results. As part of the Honors Capstone, you are required to produce a thesis

  5. Completing an Honors Thesis in the Marriott School of Business Why Do an Honors Thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    Completing an Honors Thesis in the Marriott School of Business (5/21/07) Why Do an Honors Thesis, the discipline, creativity, and intellectual rigor involved in completing an honors thesis can be the capstone experience of an excellent business education. What Is Expected of an Honors Thesis? An honors thesis

  6. Honors in Mathematics Writing a Senior Thesis

    E-Print Network [OSTI]

    Honors in Mathematics Writing a Senior Thesis (2015-2016) Candidacy for Honors To receive honors in Mathematics, a student must submit a senior thesis. This is the only requirement for honors eligibility, beyond basic requirements of the Mathematics concentration. The Mathematics Department recommends

  7. Harry Potter: Der siebte Horkrux  

    E-Print Network [OSTI]

    melindaleo

    2011-01-01

    vom Lektor Es gibt viel gute und weniger gute Fan Fiction um Harry Potter. Dieser Band ist definitiv sehr gute Fan Fiction, und zwar so gute, da? ich diesen ?siebenten Band? besser als das Original finde und es der M?he wert fand, die vielen in der... zu apparieren, um den Hogwarts-Express zu vermeiden. Was machte es jetzt noch, wenn sie ihn aus Hogwarts hinauswarfen? Er w?rde ohnehin nicht dorthin zur?ckkehren. Hermine, wie immer die Stimme der Vernunft, hatte ihn aber daran erinnert, dass es...

  8. Arno Harris | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex A SOpen Energy Information Application forArno Harris Jump

  9. Harry S. Truman - Hanford Site

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation Current HABFESOpportunitiesNERSCGrid-based29HaiWhy Is ItHarry S. Truman Hanford

  10. Publications for Justin Harris Harris, J. (2015). Changes in the distribution of response rates

    E-Print Network [OSTI]

    Müller, Dietmar

    2015-01-01

    . [More Information] 2014 Hart, G., Holmes, N.3758/s13420-014-0155-9">[More Information] Hart, G., Panayi, M., Harris, J., Westbrook, R. (2014

  11. Completing an Honors Thesis in Mathematics What is expected of an Honors thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    Completing an Honors Thesis in Mathematics What is expected of an Honors thesis? An Honors thesis is a significant project in an advanced area of mathematics. A successful thesis should be of publishable quality. The department prefers an Honors thesis to be original work in a recognized field of mathematics. Often a thesis

  12. Completing an Honors Thesis in Nursing What is Expected of an Honors Thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    1 Completing an Honors Thesis in Nursing What is Expected of an Honors Thesis? Undergraduates as the Honors Thesis. An Honors Thesis is a significant scholarly project that should make a contribution to existing scholarly literature in your chosen area. Your thesis will probably be the most rewarding

  13. National Building Museum 2010 Honor Award

    ScienceCinema (OSTI)

    Dr. Kristina M. Johnson

    2010-09-01

    This video was presented at the National Building Museum's 2010 Honor Award: A Salute to Civic Innovators.

  14. A Guide to Honors Table of Contents

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    . To graduate with a Commonwealth Honors designation the honors student must satisfy four CHP requirements. They are: CHP 1: Earn a 3.25 grade point average. CHP 2: Understand and satisfy the eight honors course requirements (H1 through H8). These are not extra courses, just different courses. (see below). CHP 3: For each

  15. Harry Potter, Oxford and Nuclear Energy | Department of Energy

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

    Harry Potter, Oxford and Nuclear Energy Harry Potter, Oxford and Nuclear Energy July 16, 2012 - 1:30pm Addthis Assistant Secretary Dr. Peter Lyons meets with students on the Oxford...

  16. President Harry S. Truman Fellowship National Security Science and Engineering

    E-Print Network [OSTI]

    Siefert, Chris

    President Harry S. Truman Fellowship in National Security Science and Engineering May 2013 TABLE interest. The President Harry S. Truman Fellowship in National Security Science and Engineering (Truman...........................................................................................2 2.0 SANDIA NATIONAL LABORATORIES MISSION

  17. President Harry S. Truman Fellowship National Security Science and Engineering

    E-Print Network [OSTI]

    Siefert, Chris

    President Harry S. Truman Fellowship in National Security Science and Engineering May 2015 TABLE interest. The President Harry S. Truman Fellowship in National Security Science and Engineering (Truman...........................................................................................2 2.0 SANDIA NATIONAL LABORATORIES MISSION

  18. puswideHonorsProgram Extraordinary

    E-Print Network [OSTI]

    Al Faruque, Mohammad Abdullah

    about a lot. And I am convinced that the Campuswide Honors Program (CHP) offers an outstanding learning experience for talented and dedicated students. The beauty of the CHP is the elegant way in which its advising CHP students receive,and the close-knit CHP community.I have been particularly impressed

  19. AWARDS AND HONORS PHYSICS FACULTY

    E-Print Network [OSTI]

    Clark, Bunny

    Physical Society Outstanding Referee, 2014 Beacom, John Executive Committee, Division of Astrophysics APS Speaker, OSU, Winter 2001 APS Forum on International Physics, Member-at-Large, 2001 Howard Maxwell AwardAWARDS AND HONORS PHYSICS FACULTY Created on 6/10/2004 12:52:00 PM Last updated 6/10/2014 U

  20. Willie Harris Address: Soil and Water Science Department

    E-Print Network [OSTI]

    Balser, Teri C.

    .G. Harris. 1994. Quantitative thermal analysis of soil minerals. p. 360-411. In J. Ammonette and L. In M. Sumner (ed.) Handbook of soil science. Rhue, R.D., and Harris, W.G. 1999. Phosphorus sorption/desorption1 Willie Harris Address: Soil and Water Science Department 2169 McCarty Hall University of Florida

  1. Completing an Honors Thesis in History What is Expected of an History Honors Thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    Completing an Honors Thesis in History What is Expected of an History Honors Thesis? An Honors thesis is a significant scholarly project at the undergraduate level. The thesis should make be less substantial than is required for a graduate thesis. Nevertheless, your thesis should be the most

  2. Completing an Honors Thesis in Microbiology or Molecular What is the Expectation for an Honors Thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    Completing an Honors Thesis in Microbiology or Molecular Biology What is the Expectation for an Honors Thesis? Undergraduates in the Honors Program have the opportunity to produce a significant original research work and present it in a formal, written format: the thesis. Often, the work

  3. Completing an Honors Thesis in Political Science What is Expected of an Honors Thesis?

    E-Print Network [OSTI]

    Martinez, Tony R.

    1 Completing an Honors Thesis in Political Science What is Expected of an Honors Thesis? An Honors thesis is a significant scholarly project at the undergraduate level. The thesis should make be less substantial than is required for a graduate thesis. This means that your thesis will probably

  4. Carbon nanotube composites P. J. F. Harris*

    E-Print Network [OSTI]

    Harris, Peter J F

    of matrix. A wide range of polymer matrices have been employed, and there is growing interest in nanotube/ceramic, these composites have employed polymer matrices, but there is also interest in other matrix materialsCarbon nanotube composites P. J. F. Harris* Carbon nanotubes are molecular-scale tubes of graphitic

  5. ACADEMIC HONOR POLICY REFERRAL TO CONTEST SANCTION

    E-Print Network [OSTI]

    McQuade, D. Tyler

    ACADEMIC HONOR POLICY REFERRAL TO CONTEST SANCTION (Please submit with all signatures within 10: ____________________________________________________________________________________ Proposed Sanction: ____________________________________________________________________________________ ____________________________________________________________________________________ Instructor Comments Regarding Proposed Sanction

  6. National Day of Remembrance HSS Honors Former Nuclear Weapons...

    Office of Environmental Management (EM)

    National Day of Remembrance HSS Honors Former Nuclear Weapons Program Workers National Day of Remembrance HSS Honors Former Nuclear Weapons Program Workers October 28, 2013 -...

  7. Federal Employees Honored for Saving $14 Million Through Energy...

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

    Employees Honored for Saving 14 Million Through Energy Efficiency Federal Employees Honored for Saving 14 Million Through Energy Efficiency October 27, 2005 - 12:33pm Addthis...

  8. Honorariums In honor of Joe and Ann Amisano

    E-Print Network [OSTI]

    Dasgupta, Dipankar

    of John Bobango Triumph Bank In honor of John and Lisa Bobango Tre and Dawn Hargett In honor of the BOV Dr

  9. DOE Honors WIPP Representative for Cutting Travel Costs, Greenhouse...

    Energy Savers [EERE]

    DOE Honors WIPP Representative for Cutting Travel Costs, Greenhouse Gas Emissions DOE Honors WIPP Representative for Cutting Travel Costs, Greenhouse Gas Emissions June 29, 2012 -...

  10. Berkeley Lab Climate Software Honored for Pattern Recognition...

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

    Climate Software Honored for Pattern Recognition Advances Berkeley Lab Climate Software Honored for Pattern Recognition Advances September 17, 2015 | Tags: Climate Research,...

  11. Berkeley Lab Climate Software Honored for Pattern Recognition...

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

    Climate Software Honored for Pattern Recognition Advances News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us...

  12. Grand Junction Office Founder Honored at the Philip C. Leahy...

    Office of Environmental Management (EM)

    Grand Junction Office Founder Honored at the Philip C. Leahy Memorial Park Dedication and Open House Grand Junction Office Founder Honored at the Philip C. Leahy Memorial Park...

  13. Honors Thesis Guidelines, Spring 2012 1 Integrative Biology

    E-Print Network [OSTI]

    Honors Thesis Guidelines, Spring 2012 1 Integrative Biology UC Berkeley Department of Integrative Biology Guidelines for the Undergraduate Honors Thesis Program There are several undergraduate courses for clarification and updates. This memo only concerns honors research, including the Honors Thesis. To qualify you

  14. Numerical modelling of tsunami mitigation by mangroves Putu Harry Gunawan

    E-Print Network [OSTI]

    Mancini, Simona

    Numerical modelling of tsunami mitigation by mangroves Putu Harry Gunawan LAMA (Laboratoire d'Analyse et de Mathmatiques Appliques) UPEM putu-harry.gunawan@univ.paris-est.fr Abstract Figure 1: Mangrove-Tsunami Model. The role of mangroves (coastal forests) in the mitigation of tsunami impacts is a debated topic

  15. Thesis Proposal Submission Form BYU HONORS PROGRAM

    E-Print Network [OSTI]

    Martinez, Tony R.

    m Thesis Proposal Submission Form BYU HONORS PROGRAM Name _____ Route Y ID _________________ Email(s) Minor(s) ______ Thesis Title ______ __________________________________________________________________________________ Thesis Committee Members (Please print or type) Advisor/Chair ____ __Office ____Tel. _____ ______ Second

  16. SAS Honors Seminar 259: Extraterrestrial Life

    E-Print Network [OSTI]

    Baker, Andrew J.

    SAS Honors Seminar 259: Extraterrestrial Life 11/17/2008 #12; GBT remote observing and another "UFO incident" Mooney (2005) and McNally & Clancy (2005) ­ explanation for "alien abduction

  17. User:Harris | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin FilmUnited States: EnergyUpperCwebberHarris Jump to:

  18. Harry Bolson | Photosynthetic Antenna Research Center

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-Dose Lowï‚—34OctoberK West60HarnessingBolson Harry Bolson

  19. Harry E Mynick | Princeton Plasma Physics Lab

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-Dose Lowï‚—34OctoberK West60HarnessingBolson Harry

  20. Harry Frank | Photosynthetic Antenna Research Center

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journalvivo Low-Dose Lowï‚—34OctoberK West60HarnessingBolson HarryFrank

  1. Women @ Energy: Deborah Harris | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley Ann Jackson About1996HowFOAShowingFuelWeatherize » AirareAboutAlinaChristinaDeborah Harris

  2. Wind Powering America's Wind for Schools Team Honored with Wirth...

    Office of Environmental Management (EM)

    Powering America's Wind for Schools Team Honored with Wirth Chair Award Wind Powering America's Wind for Schools Team Honored with Wirth Chair Award May 1, 2012 - 2:46pm Addthis...

  3. EM Receives Several Honors in 2011 DOE Sustainability Awards

    Broader source: Energy.gov [DOE]

    Several EM employees, projects and teams were honored as part of the 2011 DOE Sustainability Awards announced this week.

  4. Core Mathematics Honors College of Science MATH-BS

    E-Print Network [OSTI]

    Kihara, Daisuke

    Core Mathematics Honors College of Science MATH-BS Code-MAHO Departmental/Program Major Courses (76 Of Analysis or MA 44000 Real Analysis Honors (3) MA 35300 Linear Algebra II With Applications (3) Math ******************************************************************************************************************************** #12;Revised 2/2013 (effective Fall 2013) Core Mathematics Honors http://www.math

  5. COLLOQUIUM: Who Will Save the Tokamak - Harry Potter, Arnold...

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

    20, 2015, 1:30pm to 3:00pm Colloquia MBG Auditorium COLLOQUIUM: Who Will Save the Tokamak - Harry Potter, Arnold Schwarzenegger, Shaquille O'Neal, or Donald Trump? Professor...

  6. Harris County- Green Building Policy for County Buildings

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Harris County Facilities and Property Management (FPM) Division also requires all county buildings to meet minimum energy efficiency and sustainability measures, as described in the Best Gree...

  7. The relationship between creativity and psychosocial development among college honors students and non-honors students 

    E-Print Network [OSTI]

    Dupre' Casanova, Amy Elizabeth

    2009-05-15

    -1 THE RELATIONSHIP BETWEEN CREATIVITY AND PSYCHOSOCIAL DEVELOPMENT AMONG COLLEGE HONORS STUDENTS AND NON-HONORS STUDENTS A Dissertation by AMY ELIZABETH DUPR? CASANOVA Submitted to the Office of Graduate Studies of Texas A&M University in partial... A Dissertation by AMY ELIZABETH DUPR? CASANOVA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee...

  8. DEAN'S LIST HONORABLE MENTION Spring Semester 2014

    E-Print Network [OSTI]

    Wong, Pak Kin

    Lee Avetian, Luke Saro Baker, Sean Robert Balagopal, Nirantha G. Ball, Sabrina Ballam, Abigail SavilleDEAN'S LIST HONORABLE MENTION Spring Semester 2014 Congratulations to these students for earning Allen Futch, Robert Steven Gallagher, Sara J. Gao, Li Gary, Michelle Elizabeth Gebbia, Timothy J. Gharib

  9. THE PENNSYLVANIA STATE UNIVERSITY SCHREYER HONORS COLLEGE

    E-Print Network [OSTI]

    Brennan, Sean

    AND MECHANICAL AND NUCLEAR ENGINEERING USING MONTE CARLO METHODS FOR ROBOT LOCALIZATION ZACHARY A. CORRELL SPRING Reviewed and approved* by the following: Sean Brennan Assistant Professor of Mechanical and Nuclear Adviser Mary Frecker Professor of Mechanical and Nuclear Engineering Honors Adviser *Signatures

  10. SAS Honors Seminar 259: Extraterrestrial Life

    E-Print Network [OSTI]

    Baker, Andrew J.

    star undergoes core collapse when it is unable to derive any more energy from nuclear fusion SAS Honors Seminar 259: Extraterrestrial Life 9/22/2008 #12; Star formation in Eagle Nebula #12; Star formation in Orion #12; "Proplyds" in Orion #12; Two kinds of supernovae Type I

  11. An Archaeological Survey for the Greenhouse Road Project in Western Harris County Texas 

    E-Print Network [OSTI]

    Moore, William; Baxter, Edward

    2015-07-28

    Brazos Valley Research Associates (BVRA) performed an archaeological survey along a one-mile segment of the Greenhouse Road lane addition in western Harris County, Texas for Harris County on October 3, 2007. William E. Moore was the Principal...

  12. The Honors Thesis in French or Italian The Honors Program Advisement Center (102A HSRB, 422-5497) provides a number of excellent

    E-Print Network [OSTI]

    Martinez, Tony R.

    The Honors Thesis in French or Italian The Honors Program Advisement Center (102A HSRB, 422-5497) provides a number of excellent guides to assist you in preparing your thesis. This document will help for an Honors thesis in French or Italian? Preparing an Honors thesis offers a golden opportunity to undertake

  13. News: Wilberto Cantón Honored in México

    E-Print Network [OSTI]

    Shirley, Carl R.

    1983-04-01

    14 LATIN AMERICAN THEATRE REVIEW Wilberto Cantón Honored in México Wilberto Cantón (1925-1979) was one of the most prominent names in Mexican theatre during the period from 1950 through 1979. As playwright, director, translator and critic, he... contributed greatly to a dynamic literary genre during an era of intense growth and development. As a tribute to his long and distinguished career, the Sociedad General de Escritores de México (SOGEM) on April 11, 1983, named the theatre...

  14. Ten Los Alamos scientists honored by American Physical Society

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

    Physics Hou-Tong Chen was honored for contributions to the development of active metamaterials and devices, and the development and understanding of few-layer metamaterials and...

  15. ASCR Researchers Honored With a Presidential Early Career Award...

    Office of Science (SC) Website

    Researchers Honored With a Presidential Early Career Award Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights Benefits of ASCR...

  16. The Honorable John T. 'Gregorio 301 N. Wood Avenue

    Office of Legacy Management (LM)

    Eiergy ; Washington, DC 20585 -, (, > - .' c ' . FEB 1 7 1995 .; , -, The Honorable John T. 'Gregorio 301 N. Wood Avenue Linden, 'New Jersey 07036 d. Dear Mayor Gregorio: ,'...

  17. Y-12 honors inventors at annual ceremony | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    inventors at annual ceremony Y-12 recently honored 12 individuals for receiving U.S. Patent and Trademark Office patents and 74 individuals for submitting invention disclosures....

  18. El concepto del honor en tres dramas de Calderon 

    E-Print Network [OSTI]

    Escabi, Maria Isabel

    1978-01-01

    , secrete ven an@a. Estos dramas tratan el terna del honor conyugal y los celos. Los tres son tragedias y tienen un argumento bastante parecido. En estos el marido que cree que su honor ha sido manchado, se venga de su esposa siguiendo las convenciones... XVII se hara un estudio especial sobre cate terna. Este sera el primer capitulo. En cate se estudiara la diferencia entre el honor y la honra, las caracterrsticas de un caballero noble u honrado, la convencion teatral deli codigo del honor, las...

  19. National Nuclear Security Administration honors Y-12 employees...

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

    National Nuclear Security ... National Nuclear Security Administration honors Y-12 employees Posted: September 25, 2012 - 12:55pm Joining Oder (center) to present the awards was...

  20. Director Dot Harris Inspires Girls at DigiGirlz Day Event | 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 Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8,Department of Energy2EM's Cleanup | Department

  1. Energy transport by acoustic modes of harmonic Lisa Harris

    E-Print Network [OSTI]

    Theil, Florian

    Energy transport by acoustic modes of harmonic lattices Lisa Harris , Jani Lukkarinen , Stefan vector, k = 0. To derive equations that describe the macroscopic energy transport we introduce the Wigner concentrating to k = 0. A simple consequence of our result is the complete characterization of energy transport

  2. A Taxonomy of Parallel Prefix Networks David Harris

    E-Print Network [OSTI]

    Harris, David Money

    A Taxonomy of Parallel Prefix Networks David Harris Harvey Mudd College / Sun Microsystems of logic levels, fanout, and wiring tracks. This paper presents a three-dimensional taxonomy that not only for wide adders. This paper develops a taxonomy of parallel prefix networks based on stages, fanout

  3. Static Bifurcation in Mechanical Control Harry G. Kwatny1

    E-Print Network [OSTI]

    Kwatny, Harry G.

    Static Bifurcation in Mechanical Control Systems Harry G. Kwatny1 , Bor-Chin Chang1 , and Shiu static bifurcation. Static bifurcation in feedback systems is linked to degeneracies in the system zero Introduction Many important problems in the operation of technological systems can be interpreted as static

  4. PREFETCHING RESULTS OF WEB SEARCHES Harry Foxwell Daniel A. Menasc

    E-Print Network [OSTI]

    Menascé, Daniel A.

    services. A user wishes to locate Web sites that match query keywords. A query term or phrase is entered advertising images and text. A search for a common term such as "dinosaur" may return tens of thousandsPREFETCHING RESULTS OF WEB SEARCHES Harry Foxwell Daniel A. Menascé Sun Microsystems Dept

  5. Quantum Dots: Theory

    SciTech Connect (OSTI)

    Vukmirovic, Nenad; Wang, Lin-Wang

    2009-11-10

    This review covers the description of the methodologies typically used for the calculation of the electronic structure of self-assembled and colloidal quantum dots. These are illustrated by the results of their application to a selected set of physical effects in quantum dots.

  6. ETHICS, HONOR, AND SERVICE IN THE PROFESSION OF INDUSTRIAL ENGINEERING

    E-Print Network [OSTI]

    ETHICS, HONOR, AND SERVICE IN THE PROFESSION OF INDUSTRIAL ENGINEERING James R. Wilson December 20, 1995 1. Introduction First I congratulate each of our graduates on their accession to the profession to society but also to uphold the honor and dignity of their profession by adhering to the highest standards

  7. An Honors Thesis in English What does it involve?

    E-Print Network [OSTI]

    Martinez, Tony R.

    1 An Honors Thesis in English What does it involve? · Prospectus The prospectus is a document that establishes your intentions for your thesis and makes a strong case for why your project should constitute an Honors thesis. A strong thesis is usually a result of a well developed prospectus. Care and attention

  8. March 20, 2012 The Honorable Steven Chu The Honorable John P. Holdren

    E-Print Network [OSTI]

    . It will provide a large-scale energy supply using domestically available, abundant fuel, create zero greenhouse The Honorable John P. Holdren Secretary of Energy Director, Office of Science and Technology Policy Washington of attaining commercialized fusion energy may be compromised by the proposed FY 2013 budget. We entered

  9. 1Harry Atwater haa@caltech.edu InterSolar July 9th, 2013 Harry A. Atwater

    E-Print Network [OSTI]

    Wierman, Adam

    , 2013 iPhone cover 1.1 WMan portable charger Single crystal thin film GaAs solar cells and modules ·Cell 9th, 2013 7 Junction Subcell Choices · Single junction ELO cells · lattice-matched to GaAs or In Trapping Filtered Concentrator Alta and Spectrum-splitting III-V Multijunction Solar Cells #12;2Harry

  10. Pantex honors veterans | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPoster SessionPrograms |Y-12collects food for kidshonors

  11. Honor the Earth | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to: navigation,(SREP) |IncHongHonor

  12. Back-to-Basics Proposal Overview of 2012 Honor System Legislation

    E-Print Network [OSTI]

    Acton, Scott

    Back-to-Basics Proposal Overview of 2012 Honor System Legislation *The viewpoints and observations Subcommittee and do not represent the official stance of the University of Virginia Honor Committee. #12;2Back-to-Basics for investigating and trying Honor offenses? Source: Honor 2012 Survey #12;3Back-to-Basics Proposal11BOS The current

  13. Karan A. Adhikari '12 in honor of Joseph N. Gothie '94

    E-Print Network [OSTI]

    Napier, Terrence

    . Davis 'F/S Krittapas Chanchaiworawit '13 in honor of George E. McCluskey, Jr. 'F/S Irene A. Chou '98G in honor of Helen M. Chan 'F/S Irene A. Chou '98G in honor of Martin P. Harmer '07P '11P 'F/S Sylvia Cooper in honor of John L. Hankins '39 '79P '12GP* Donna L. Hardiman in honor of Paul F. Hartzell, Jr. '75

  14. Limited Imitation Contagion on Random Networks: Chaos, Universality, and Unpredictability Peter Sheridan Dodds,* Kameron Decker Harris,

    E-Print Network [OSTI]

    Danforth, Chris

    Sheridan Dodds,* Kameron Decker Harris, and Christopher M. Danforth Department of Mathematics that period doubling arises as we increase the average node degree, and that the universality class

  15. Honors B.S. in Biology (Aug 2014) Overview: The H.B.S in Biology is a collaboration between the Honors College and the Biology Department to

    E-Print Network [OSTI]

    Clayton, Dale H.

    1 Honors B.S. in Biology (Aug 2014) Overview: The H.B.S in Biology is a collaboration between the Honors College and the Biology Department to reward students undertaking and completing a more rigorous, research-oriented curriculum while pursuing their Honors Bachelor's Degree in Biology at the University

  16. Completing an Honors Thesis in Teacher Education Early Childhood Education

    E-Print Network [OSTI]

    Olsen Jr., Dan R.

    Completing an Honors Thesis in Teacher Education Early Childhood Education Elementary Education to the major program, Early Childhood Education, Elementary Education, or Social Studies Education (which in the Department of Teacher Education (Early Childhood Education, Elementary Education, and Social Studies

  17. Energy Secretary Moniz Honors ESnet's OSCARS Bandwidth Reservation...

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

    (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net Energy Secretary Moniz Honors ESnet's OSCARS Bandwidth...

  18. The Development of Honors Colleges in Public Universities 

    E-Print Network [OSTI]

    Freeman, Brenda R

    2015-04-28

    Honors colleges have been an increasing development in higher education across the United States, and while investigations have been made into the place and functions of these programs, it is equally important to determine ...

  19. PPPL's science lecture debuts Jan. 10 with new name honoring...

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

    PPPL's science lecture debuts Jan. 10 with new name honoring long-time organizer By Jeanne Jackson DeVoe December 22, 2014 Tweet Widget Google Plus One Share on Facebook The late...

  20. Hydrogen and Fuel Cell Mentors Honored as Outstanding | Awards...

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

    Hydrogen and Fuel Cell Mentors Honored as Outstanding June 5, 2015 Photo of two women and one man posing for a photo in front of a scientific poster. (Left to Right) Huyen Dinh,...

  1. "No Sacrifice is too Great, save that of Honor": Honor, Death, and Psychological Combat Trauma in the American Civil War

    E-Print Network [OSTI]

    Sheffer, Debra J.

    2009-04-08

    Examination of honor culture and attitudes toward death and dying found in letters, diaries, and newspapers - from the colonial and revolutionary period through the Civil War era - strongly suggests that Civil War soldiers ...

  2. A quantum dot heterojunction photodetector

    E-Print Network [OSTI]

    Arango, Alexi Cosmos, 1975-

    2005-01-01

    This thesis presents a new device architecture for photodetectors utilizing colloidally grown quantum dots as the principle photo-active component. We implement a thin film of cadmium selenide (CdSe) quantum dot sensitizers, ...

  3. DOT specification packages evaluation

    SciTech Connect (OSTI)

    Ratledge, J.E.; Rawl, R.R. )

    1991-01-01

    During the late 1960s and early 1970s, the Department of Transportation (DOT) specification package system was implemented to serve as a useful and equivalent alternative to the Nuclear Regulatory Commission (NRC) and the Bureau of Explosives approval systems for Type B and fissile radioactive material package designs. When a package design was used by a large number of organizations, the package design was added to the DOT regulations as a specification package authorized for use by any shipper. In the mid-1970s, the NRC revised its package design certification system to the one in use today. This paper reports that, while the NRC and DOT transportation regulations have evolved over the years, the DOT specification package designs have remained largely unchanged. Questions have been raised as to whether these designs meet the current and proposed regulations. In order to enable the NRC and DOT to develop a regulatory analysis that will support appropriate action regarding the specification packages, a study is being performed to compile all available design, testing, and analysis information on these packages.

  4. Improved identification of volcanic features using Landsat 7 ETM+ Luke P. Flynn*, Andrew J.L. Harris, Robert Wright

    E-Print Network [OSTI]

    Wright, Robert

    to be useful for tracking the progress of eruptions in entire volcanic regions (e.g., Dean et al., 1998; Harris.L. Harris, Robert Wright HIGP/SOEST, University of Hawaii, 2525 Correa Road, Honolulu, HI 96822, USA

  5. The status of resistance in Culex quinquefasciatus say (Diptera: culicidae) populations in Brazos and Harris Counties, Texas 

    E-Print Network [OSTI]

    Johnsen, Mark Miller

    2009-05-15

    In 2002, West Nile virus was isolated for the first time in Harris County, Texas. The subsequent epidemic led the Harris County Mosquito Control Division to initiate an extensive spraying operation to suppress infected ...

  6. IMPLEMENTATION OF GIS IN SOCIAL Maria Ljungblom, Karin Gullstrand, Petter Pilesj and Lars Harrie

    E-Print Network [OSTI]

    Harrie, Lars

    IMPLEMENTATION OF GIS IN SOCIAL SCIENCES Maria Ljungblom, Karin Gullstrand, Petter Pilesjö and Lars Harrie GIS centre Lund University Sölvegatan 13 SE-223 62 Lund Sweden cil97lm8@l.lth.se, cil97gk8@l.lth.se, petter.pilesjo@nateko.lu.se and lars.harrie@lantm.lth.se KEY WORDS: GIS implementation, Social Science

  7. Merguerian, Charles; Baskerville, C. A.; and Harris, James, 1983, Engineering geology of New York City.

    E-Print Network [OSTI]

    Merguerian, Charles

    ; Baskerville, C. A.; and Harris, James, 1983, Engineering geology of New York City (abs.): Empire State GeogramMerguerian, Charles; Baskerville, C. A.; and Harris, James, 1983, Engineering geology of New York City. Bedrock geologic mapping of Manhattan Island has delineated an areally extensive, polydeformed

  8. Bottomonium spectrum at finite temperature Tim Harris and Sinad M. Ryan

    E-Print Network [OSTI]

    Aarts, Gert

    Bottomonium spectrum at finite temperature Tim Harris and Sinéad M. Ryan School of MathematicsXiv:1311.3208v2[hep-lat]15Nov2013 #12;Bottomonium spectrum at finite temperature Tim Harris 1. Probing be more favourable for bottom quarks. A reliable ab initio calculation of spectral functions is desirable

  9. Harris County, Georgia: 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynnMassachusetts: EnergySoftware IncHarmon,Tennessee: EnergyHarris

  10. Harris Hill, New York: 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynnMassachusetts: EnergySoftware IncHarmon,Tennessee: EnergyHarrisHill,

  11. DEPARTAMENTO DE MATEMATICAS MATE-1215 Clculo Integral con Ecuaciones Diferenciales (Honores)

    E-Print Network [OSTI]

    Ferri, Stefano

    DEPARTAMENTO DE MATEMATICAS MATE-1215 Cálculo Integral con Ecuaciones Diferenciales (Honores Integral con Ecuaciones Diferenciales), pero ofrece al estudiante una aproximación más a profundidad y sustitución de variables. El curso de Cálculo Integral con Ecuaciones Diferenciales (Honores) parte de allí

  12. Physical chemistry of soils and aquifers: A special issue in honor of Garrison Sposito

    E-Print Network [OSTI]

    Silver, Whendee

    Editorial Physical chemistry of soils and aquifers: A special issue in honor of Garrison Sposito This special issue of GCA has been organized in honor of Professor Garrison Sposito (University of California and Aquifer systems: A Symposium in Honor of Garrison Sposito,'' which was co-sponsored by the Geochemistry

  13. Nontoxic quantum dot research improves solar cells

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

    Nontoxic quantum dot research improves solar cells Nontoxic quantum dot research improves solar cells Solar cells made with low-cost, nontoxic copper-based quantum dots can achieve...

  14. Harris County- Green Building Tax Abatement for New Commercial Construction (Texas)

    Broader source: Energy.gov [DOE]

    In 2008, the Harris County Commissioners Court adopted guidelines for partial tax abatements for new construction of commercial LEED-certified buildings. The tax abatement was renewed in 2009, and...

  15. Model-driven support for a vaccine study in Kathmandu Jim Davies, Jeremy Gibbons, Steve Harris,

    E-Print Network [OSTI]

    Oxford, University of

    Model-driven support for a vaccine study in Kathmandu Jim Davies, Jeremy Gibbons, Steve Harris Alliance for Vaccines and Immunisation), which is funded by five national governments and the Bill

  16. Archaeological survey of the Gosling Road Extension Project in North Central Harris County Texas 

    E-Print Network [OSTI]

    Moore, William

    2015-06-04

    A cultural resources investigation of the Gosling Road Extension project in north-central Harris County was conducted by Brazos Valley Research Associates on June 8 and 12, 1993 for the environmental firm, W. K. Berg & Associates of Houston, Texas...

  17. CLEANER PRODUCTION THROUGH CONSERVATION Harry W. Edwards, Michael F. Kostrzewa, and Jason M. Jonkman

    E-Print Network [OSTI]

    CLEANER PRODUCTION THROUGH CONSERVATION 2000-285 Harry W. Edwards, Michael F. Kostrzewa, and Jason ABSTRACT The Colorado State University Industrial Assessment Center (CSU IAC) promotes cleaner production energy conservation recommendations, two pollution prevention recommendations, and one productivity

  18. Material contrast does not predict earthquake rupture propagation Ruth A. Harris

    E-Print Network [OSTI]

    Day, Steven M.

    Material contrast does not predict earthquake rupture propagation direction Ruth A. Harris U) earthquake rupture propagation direction can be predicted from the material contrast, and 2) earthquake (2005), Material contrast does not predict earthquake rupture propagation direction, Geophys. Res. Lett

  19. Hall of Honor 2014: Pursuing Explanations, Discovering Robert Brooks

    E-Print Network [OSTI]

    Hall of Honor 2014: Pursuing Explanations, Discovering Ourselves Foundry Robert Brooks Mon, 2014, but there is something more about his experience that earns his recognition in the Foundry Management & Technology Hall at the Department of Materials Science and Engineering at Virginia Tech; Director of VT-FIRE (Foundry Institute

  20. VACUUM ENERGY IN QUANTUM GRAPHS A Senior Honors Thesis

    E-Print Network [OSTI]

    VACUUM ENERGY IN QUANTUM GRAPHS A Senior Honors Thesis by JUSTIN HOWARD WILSON Submitted ABSTRACT Vacuum Energy in Quantum Graphs. (April 2007) Justin Howard Wilson Department of Physics the vacuum energy in quantum graphs. Vacuum energy arose in quantum physics but has an independent

  1. February 2008 The Honorable Emily Stover DeRocco

    E-Print Network [OSTI]

    .D Physical Scientist Office of Science U.S. Department of Energy Matthew Clark, Ph.D Director of University.D Assistant Administrator for Education National Aeronautics and Space Administration The Honorable Cora B into Action in 2008 Appendices A. Public Law 109-420 Establishing the Interagency Task Force B. Task Force

  2. Student Honor Code Responsible Administrative Unit: Student Life

    E-Print Network [OSTI]

    of academic excellence and personal integrity regarding my schoolwork, exams, academic projects, and research in the area of academic integrity. As a Mines student, I am expected to adhere to the highest standards endeavors. I will act honestly, responsibly, and above all, with honor and integrity in all aspects of my

  3. Academic Honor Policy Training for Undergraduate Teaching Assistants

    E-Print Network [OSTI]

    McQuade, D. Tyler

    Academic Honor Policy Training for Undergraduate Teaching Assistants Academic Integrity Basics 1. This includes working on assignments together, (either in person or through social media), when the instructor's values regarding academic integrity. This happens through dissemination and enforcement of the Academic

  4. CHM 1050, Section 02 Honors General Chemistry I

    E-Print Network [OSTI]

    Zakarian, Armen

    CHM 1050, Section 02 Honors General Chemistry I Fall 2006 HTL 219, MWF 10:15 - 11:00 a.m. The name "General Chemistry" implies that it is not specialized into Organic, Inorganic, Physical, or Biochemistry to get familiar with various aspects of chemistry in broad terms, it may stimulate to think about

  5. DOT WEB PAGES (plain text) 1 DOT WWW Pages --Plain Text Copy June 17, 2015

    E-Print Network [OSTI]

    Rutten, Rob

    DOT WEB PAGES (plain text) 1 DOT WWW Pages -- Plain Text Copy ­ June 17, 2015 http . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 8 pdf copies of these pages 29 Welcome to the DOT web pages! The Dutch Open Telescope on La Palma observing: wiki external usage webcam #12;DOT WEB PAGES (plain text) 2 1 DOT news · January 2012: Utrecht

  6. Nanoscale engineering boosts performance of quantum dot light...

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

    Quantum dot light emitting diodes Nanoscale engineering boosts performance of quantum dot light emitting diodes Quantum dots are nano-sized semiconductor particles whose emission...

  7. Promising future of quantum dots explored in conference

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

    Promising future of quantum dots explored Promising future of quantum dots explored in conference Researchers are gathering to reflect on two decades of quantum dot research at a...

  8. EPA Honors Organizations for Supporting Green Power | Department of Energy

    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 Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|DepartmentStatementof EnergyQuality'Lean'1401 LEEWHITE5|EPA Honors

  9. The Modern Face of Honor Killing: Factors, Legal Issues, and Policy Recommendations

    E-Print Network [OSTI]

    Vitoshka, Diana Y

    2010-01-01

    Amnesty International, Pakistan. September 1999. Web. 15Contextual Analysis of Pakistan's Honor Crimes Legislation."Civil Code. 2005. Web. Pakistan Penal Code. 6 October 1860.

  10. Nanophotonic design principles for ultrahigh efficiency photovoltaics Harry Atwater, Albert Polman, Emily Kosten, Dennis Callahan, Pierpaolo Spinelli, Carissa Eisler, Matthew

    E-Print Network [OSTI]

    Atwater, Harry

    Nanophotonic design principles for ultrahigh efficiency photovoltaics Harry Atwater, Albert Polman for ultrahigh efficiency photovoltaics Harry Atwater, 1,2 Albert Polman,2,1 , Emily Kosten, Dennis Callahan1 can enable ultrahigh efficiencies previously considered to be out of reach. Photovoltaic technology

  11. HONORS THESIS PLANNER Writing an Honors thesis is a significant undertaking. Ideally, a student will devote time over a twelve-to eighteen-month period to propose, research, and

    E-Print Network [OSTI]

    Martinez, Tony R.

    HONORS THESIS PLANNER Writing an Honors thesis is a significant undertaking. Ideally, a student will devote time over a twelve-to eighteen-month period to propose, research, and write the thesis. You may use this form to create your own thesis plan. Honors Program Deadlines December graduation April

  12. Read: Entrancing Enchantment: How Harry Cast a Spell Over Hip Nepali Readers

    E-Print Network [OSTI]

    Fineprint Bookclub

    2007-01-01

    bookstores were probably sekuwa pasals. Today, if a kid cannot find the Harry Potter edition that he wants at one bookstore, he can scoot around town and try his luck elsewhere. Harry Potter books also probably do well in Nepal because the books fill a... hundred seventy-fi ve students from different schools in the region, 1026 households, and offi cers from ten offi ces have become members of the library Each household, depending on its economic status, is charged from a minimum of 25 rupees to a...

  13. HoustonChronicle.com -Tiny honor a big deal for algae scientist HoustonChronicle.

    E-Print Network [OSTI]

    Jeong, Hae Jin

    HoustonChronicle.com - Tiny honor a big deal for algae scientist HoustonChronicle. com Section-mail this story June 18, 2005, 5:48PM Tiny honor a big deal for algae scientist By DAVID A. FAHRENTHOLD Washington Post Sometimes, algae can be the highest form of flattery. ADVERTISEMENTSo it was for Diane K. Stoecker

  14. Revised 8/11 Baccalaureus Artium et Scientiae ~ The South Carolina Honors College Degree

    E-Print Network [OSTI]

    Almor, Amit

    Revised 8/11 Baccalaureus Artium et Scientiae ~ The South Carolina Honors College Degree undergraduate degree program at the University of South Carolina and one of the most selective in the country from South Carolina Honors College." Minimum cumulative GPR to be admitted 3.6 at the end of student

  15. Chemistry 109 (3 credit hours) Honors General Chemistry Lecture, Part I; Fall 2014

    E-Print Network [OSTI]

    Doyle, Robert

    Chemistry 109 (3 credit hours) Honors General Chemistry Lecture, Part I; Fall 2014 Instructor Prerequisite: None Textbook: Zumdahl and Zumdahl, Chemistry, 9th Edition, (Houghton Mifflin). Copies of the book are available at the University Bookstore. Corequisite: CHE 129 ­ Honors General Chemistry

  16. All inorganic colloidal quantum dot LEDs

    E-Print Network [OSTI]

    Wood, Vanessa Claire

    2007-01-01

    This thesis presents the first colloidal quantum dot light emitting devices (QD-LEDs) with metal oxide charge transport layers. Colloidally synthesized quantum dots (QDs) have shown promise as the active material in ...

  17. Physicist honored with new APS award | Princeton Plasma Physics Lab

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass mapSpeeding access| DepartmentPeerFederal FleetUp inrd IEEE PVSC,Physicist honored

  18. NNSA honors Pantex explosives experts | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPoster Session | Nationalhits 21 percent of CFC goal

  19. NNSA honors SRS employees for excellent support | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPoster Session | Nationalhits 21 percent of CFC

  20. National group honors Sandia radiation effects expert | National Nuclear

    National Nuclear Security Administration (NNSA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPoster Session |SecurityNSDD |UpdatedSecurity

  1. Los Alamos honors computer code team with Feynman Innovation Prize

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion to local Unitedto STEMLANLTeam honored with Feynman

  2. NERSC Honors Third Annual HPC Achievement Award Winners

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesof Energy Moving Basic Energy Sciences (BES)Honors Third

  3. Secret City honor | Y-12 National Security Complex

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation ofAlbuquerque| StanfordOffice ofTorushigh-powerSearchSeatingSecret City honor

  4. Please complete this form and return it to the Honors College Office on South Campus in O'Leary 3rd Floor.

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    Please complete this form and return it to the Honors College Office at 978.934.2797 or email us at Honors@uml.edu. Honors Thesis Completion Form Name, ________________________, certify that this student has satisfactorily completed his/her honors project and has given a public

  5. Energy transport by acoustic modes of harmonic Lisa Harris # , Jani Lukkarinen + , Stefan Teufel # , and Florian Theil #

    E-Print Network [OSTI]

    Energy transport by acoustic modes of harmonic lattices Lisa Harris # , Jani Lukkarinen + , Stefan of energy transport in harmonic lattices with acoustic dispersion relations. 1 Introduction. The energy, we first need to understand how energy is transported within the crystal via purely harmonic

  6. Water Conservation in the Home Janie L. Harris, M.Ed., CRS

    E-Print Network [OSTI]

    Water Conservation in the Home Janie L. Harris, M.Ed., CRS Extension Housing and Environment't Let the Faucet Run Dry Water Conservation in the Home Page 1Family and Consumer Sciences · Texas A&M AgriLife Extension Service A typical family uses 60­80 gallons of water per person per day. That's 240

  7. Enveloping of Charged Proteins by Lipid Bilayers Daniel Harries,*, Avinoam Ben-Shaul,*, and Igal Szleifer

    E-Print Network [OSTI]

    Ben-Shaul, Avinoam

    Enveloping of Charged Proteins by Lipid Bilayers Daniel Harries,*, Avinoam Ben-Shaul,*, and Igal an oppositely charged protein is studied with use of a simple theoretical model. The free energy of the bilayer-enveloped protein complex is expressed as a sum of electrostatic and curvature elasticity contributions

  8. Pollution Prevention Through Productivity Improvement Harry W. Edwards, Michael F. Kostrzewa, and Cynthia K. Ketzenberger

    E-Print Network [OSTI]

    1 Pollution Prevention Through Productivity Improvement 99-151 Harry W. Edwards, Michael F that recommended productivity improvement practices can also prevent formation of wastes and polluting emissions. A total of 61 productivity improvement recommendations were made, 14 of which provide pollution prevention

  9. Solvent Diffusion Model for Aging of Lithium-Ion Battery Cells Harry J. Ploehn,z

    E-Print Network [OSTI]

    Solvent Diffusion Model for Aging of Lithium-Ion Battery Cells Harry J. Ploehn,z Premanand Ramadass model of solvent diffusion describing the growth of solid-electrolyte inter- faces SEIs in Li-ion cells incorporating carbon anodes. The model assumes that a reactive solvent component diffuses through the SEI

  10. Adaptive value of sex in microbial pathogens Richard E. Michod a,*, Harris Bernstein b

    E-Print Network [OSTI]

    Adaptive value of sex in microbial pathogens Richard E. Michod a,*, Harris Bernstein b , Aurora M Available online 16 January 2008 Abstract Explaining the adaptive value of sex is one of the great by sex, which must outweigh the substantial costs of sex. Here, we consider the adaptive value of sex

  11. Modeling Harry's Brook Watershed Alexandra Konings, REU 2006 Tracing the Water

    E-Print Network [OSTI]

    Petta, Jason

    of impervious cover >Reduce infiltration >Increase runoff · Existence of storm drainage networks >sewers What Influences the Water Cycle? · Topography > direction of flow > flow velocity · Infiltration: Green Watershed Alexandra Konings, REU 2006 How Do We Study This? Study Harry's Brook Watershed in Princeton EPA

  12. THE HOMOLOGOUS TEMPERATURE DEPENDENCE OF CREEP Harry W. Green, II and Robert S. Borch

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    709 THE HOMOLOGOUS TEMPERATURE DEPENDENCE OF CREEP Harry W. Green, II and Robert S. Borch of usually less than 10K. This apparatus has allowed us to test experimentally the prevailing philosophy that the pressure dependence of power law creep can be expressed by an activation volume, QV*, that approximates

  13. Off-shelf portion of Harris delta: a reexamination of downdip Woodbine-Eagle Ford

    SciTech Connect (OSTI)

    Porter, M.

    1989-03-01

    This study relates the Eagle Ford-equivalent Harris delta north of the Stuart City shelf edge with the downdip Woodbine-Eagle Ford section south of that shelf edge. Together, they comprised one large deltaic complex that divided into two major lobes at an avulsion site near Anderson County. One lobe prograded southwestward toward Kurten field in Brazos County; the other (now partly eroded) prograded southeastward beside the low-lying Sabine (uplift) landmass into Polk County. The Polk County lobe crossed the Stuart City shelf edge in the Seven Oaks-Hortense field area and continued to prograde southward into deeper and higher energy water. Such an environment caused this off-shelf Harris delta to oversteepen, resulting in frequent slumps and gravity flows that deposited debris-flow and turbidite sands along with predominantly fine-grained prodelta sediments. More familiar deltaic facies (outer fringe) are present in the uppermost section. Numerous structural and stratigraphic maps and cross sections illustrate the progradation of the downdip Harris delta and its features. The progradation was arrested for a time by deeper water at the older and more precipitous Sligo shelf edge. This progradational hiatus is recorded by a relatively strong reflection that separates two seismic sequences. The younger, onlapping sequence appears to represent continued Harris delta sedimentation. Among the interesting features mapped seismically and/or geologically are mounded reflections that represent the largest slumping events, thickness anomalies associated with the carbonate substrate, and erosional( ) channels at the section top. These off-shelf Harris delta deposits appear to interfinger laterally with a genetically different eastern (Tuscaloosa ) sequence in Tyler and Jasper Counties.

  14. Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford

    SciTech Connect (OSTI)

    Porter, M.H. ); Van Siclen, D.C.; Sheriff, R.E. )

    1989-09-01

    This study related the Eagle Ford equivalent Harris delta north of the Stuart City shelf edge with downdip Woodbine-Eagle Ford section south of that shelf edge. Together, they comprised one large deltaic complex that divided into two major lobes at an avulsion site near Anderson County, Texas. One lobe prograded southwestward toward Kurten field in Brazos County, the other (now partly eroded) prograded southeastward beside the low-lying Sabine (uplift) landmass into Polk County. The Polk County lobe crossed the Stuart City shelf edge in the Seven Oaks-Hortense field area, and continued to prograde southward into deeper and higher energy water. Such an environment caused this off-shelf Harris delta to oversteepen, resulting in frequent slumps and gravity flows that deposited debris-flow and turbidite sands along with predominantly fine-grained prodelta sediments. More familiar deltaic facies (outer fringe) are present in the uppermost section. Numerous structural and stratigraphic maps and cross sections illustrate the progradation of the downdip Harris delta and its features. The progradation was arrested for a time by deeper water at the older and more precipitous Sligo shelf edge. This progradational hiatus is recorded by a relatively strong reflection that separates two seismic sequences. The younger onlapping sequence appears to represent continued Harris delta sedimentation. among the interesting features mapped seismically and/or geologically are: mounded reflections that represent the largest slumping events, thickness anomalies associated with the carbonate substrate, and erosional( ) channels at the section top. These off-shelf Harris delta deposits appear to interfinger laterally with a genetically different eastern (Tuscaloosa ) sequence in Tyler and Jasper Counties.

  15. The Statistical Theory of Quantum Dots

    E-Print Network [OSTI]

    Y. Alhassid

    2001-02-15

    A quantum dot is a sub-micron-scale conducting device containing up to several thousand electrons. Transport through a quantum dot at low temperatures is a quantum-coherent process. This review focuses on dots in which the electron's dynamics are chaotic or diffusive, giving rise to statistical properties that reflect the interplay between one-body chaos, quantum interference, and electron-electron interactions. The conductance through such dots displays mesoscopic fluctuations as a function of gate voltage, magnetic field, and shape deformation. The techniques used to describe these fluctuations include semiclassical methods, random-matrix theory, and the supersymmetric nonlinear $\\sigma$ model. In open dots, the approximation of noninteracting quasiparticles is justified, and electron-electron interactions contribute indirectly through their effect on the dephasing time at finite temperature. In almost-closed dots, where conductance occurs by tunneling, the charge on the dot is quantized, and electron-electron interactions play an important role. Transport is dominated by Coulomb blockade, leading to peaks in the conductance that at low temperatures provide information on the dot's ground-state properties. Several statistical signatures of electron-electron interactions have been identified, most notably in the dot's addition spectrum. The dot's spin, determined partly by exchange interactions, can also influence the fluctuation properties of the conductance. Other mesoscopic phenomena in quantum dots that are affected by the charging energy include the fluctuations of the cotunneling conductance and mesoscopic Coulomb blockade.

  16. MICHIGAN DOT State Report Answers

    E-Print Network [OSTI]

    MICHIGAN DOT State Report Answers April 26-28, 2011 TTCC/NCC Meeting Theme: QC/QA Requirements for Pavements 1. Summarize your state's current QC/QA requirements for pavements. Current 2003 Standard an acceptable product. Upcoming 2012 Standard Specifications for Construction Contractor Administered Quality

  17. The Role of Climatic and Environmental Variability on West Nile Virus in Harris County, Texas, 2006-2007 

    E-Print Network [OSTI]

    Berhane, Stephen

    2010-07-14

    Between the years 2006-2007, Harris County, located at the heart of the Houston metropolitan area, experienced a nearly 90% decline in the number of female mosquitoes which tested positive for the West Nile virus. Different ...

  18. B.Sc. Honors in Environmental Earth Sciences 2014-2015 Name ____________________________

    E-Print Network [OSTI]

    Machel, Hans

    _______ EAS 234 Geology Field School _______ EAS 294 or HGP 250 Natural Resources & Env. Mgmt. _______ EAS 212 Arts options include any EAS X9X or HGP courses. Note 5 Continuation in an Honors program requires

  19. Nominate An Inspirational STEM Teacher for the Nation’s Highest Honors

    Broader source: Energy.gov [DOE]

    Nominations are now open for the nation’s highest honors for K-12 mathematics and science teachers. The Presidential Awards for Excellence in Mathematics and Science Teaching, or PAEMST, have been...

  20. Wirth receives top DOE honor, credits UT-ORNL partnership | ornl...

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

    Media Contact: David Goddard University of Tennessee 865-974-0683 Wirth receives top DOE honor, credits UT-ORNL partnership Brian Wirth Brian Wirth (hi-res image) OAK...

  1. Graduate Honor System Actions 1999-2000 Case Dept. Charge GHS Action Sanction

    E-Print Network [OSTI]

    Butt, Ali R.

    Graduate Honor System Actions 1999-2000 Case Dept. Charge GHS Action Sanction F1999-01 ECp the Past Four Academic Years Case Outcomes Number of Students Sanctioned Sanction 1996-97 1997-98 1998

  2. Quantum Dot Light Emitting Diode

    SciTech Connect (OSTI)

    Keith Kahen

    2008-07-31

    The project objective is to create low cost coatable inorganic light emitting diodes, composed of quantum dot emitters and inorganic nanoparticles, which have the potential for efficiencies equivalent to that of LEDs and OLEDs and lifetime, brightness, and environmental stability between that of LEDs and OLEDs. At the end of the project the Recipient shall gain an understanding of the device physics and properties of Quantum-Dot LEDs (QD-LEDs), have reliable and accurate nanocrystal synthesis routines, and have formed green-yellow emitting QD-LEDs with a device efficiency greater than 3 lumens/W, a brightness greater than 400 cd/m2, and a device operational lifetime of more than 1000 hours. Thus the aim of the project is to break the current cost-efficiency paradigm by creating novel low cost inorganic LEDs composed of inorganic nanoparticles.

  3. Quantum Dot Light Emitting Diode

    SciTech Connect (OSTI)

    Kahen, Keith

    2008-07-31

    The project objective is to create low cost coatable inorganic light emitting diodes, composed of quantum dot emitters and inorganic nanoparticles, which have the potential for efficiencies equivalent to that of LEDs and OLEDs and lifetime, brightness, and environmental stability between that of LEDs and OLEDs. At the end of the project the Recipient shall gain an understanding of the device physics and properties of Quantum-Dot LEDs (QD-LEDs), have reliable and accurate nanocrystal synthesis routines, and have formed green-yellow emitting QD-LEDs with a device efficiency greater than 3 lumens/W, a brightness greater than 400 cd/m{sup 2}, and a device operational lifetime of more than 1000 hours. Thus the aim of the project is to break the current cost-efficiency paradigm by creating novel low cost inorganic LEDs composed of inorganic nanoparticles.

  4. A comparison study of gravid and under house CO2 mosquito traps in Harris County, Texas 

    E-Print Network [OSTI]

    White, Stephanie Lyn

    2008-10-10

    . It was the infectious disease theory that initially presented itself when an outbreak of more than 1300 cases of encephalitis occurred in St. Louis City and the surrounding area of St. Louis County, Missouri, in late summer to early fall of 1933 (Lumsden 1958, Reisen... Introduction of West Nile into Harris County, Texas, an Area Historically Endemic for St. Louis Encephalitis ......... 23 1.6.3 Year-round West Nile Activity, Gulf Coast Region, Texas, and Louisiana...

  5. & Vesicles |Hot Paper| Unilamellar Vesicles from Amphiphilic Graphene Quantum Dots

    E-Print Network [OSTI]

    Jelinek, Raz

    & Vesicles |Hot Paper| Unilamellar Vesicles from Amphiphilic Graphene Quantum Dots Sukhendu Nandi] Abstract: Graphene quantum dots (GQDs) have attracted considerable interest due to their unique Graphene quantum dots (GQDs) are carbon nanoparticles con- sisting of crystalline graphitic cores

  6. Sandia Energy - 'Giant' Nanocrystal Quantum Dots

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

    'Giant' Nanocrystal Quantum Dots: A New Class of Optical Nanomaterials for Light Emission Applications (Video Pending) Speaker: Jennifer Hollingsworth, Los Alamos National...

  7. Harris et al., eds., 2006, The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37. REVISED LITHOSTRATIGRAPHYOFTHE NORIAN-HETTANGIAN POMPERAUG RIFTBASIN,

    E-Print Network [OSTI]

    LeTourneau, Peter M.

    43 Harris et al., eds., 2006, The Triassic-Jurassic Terrestrial Transition. New Mexico Museum structures, oil shales, petroleum shows, extensive eolian deposits, and important pale- ontological finds

  8. Temperature-Dependent Electron Transport in Quantum Dot Photovoltaics

    E-Print Network [OSTI]

    Padilla, Derek

    2013-01-01

    4.4 Photovoltaics in Practice . . . . . . . . . . . . . .milestones. Quantum dot photovoltaics is in the bottom-rightIN QUANTUM DOT PHOTOVOLTAICS A dissertation submitted in

  9. Mastermind Session: Connecting the Dots Between the Real Estate...

    Energy Savers [EERE]

    Connecting the Dots Between the Real Estate Market and Residential Energy Efficiency Mastermind Session: Connecting the Dots Between the Real Estate Market and Residential Energy...

  10. RON MINER MEMORIAL BIOENGINEERING SCHOLARSHIP The Ron Miner Memorial Scholarship honors the memory of J. Ronald Miner, an

    E-Print Network [OSTI]

    Tullos, Desiree

    RON MINER MEMORIAL BIOENGINEERING SCHOLARSHIP The Ron Miner Memorial Scholarship honors the memory & Ecological Engineering. DONOR Ron Miner Memorial Bioengineering Scholarship Fund ELIGIBILITY REQUIREMENTS

  11. Single-dot optical emission from ultralow density well-isolated InP quantum dots

    SciTech Connect (OSTI)

    Ugur, A.; Hatami, F.; Masselink, W. T.; Vamivakas, A. N.; Lombez, L.; Atatuere, M.

    2008-10-06

    We demonstrate a straightforward way to obtain single well-isolated quantum dots emitting in the visible part of the spectrum and characterize the optical emission from single quantum dots using this method. Self-assembled InP quantum dots are grown using gas-source molecular-beam epitaxy over a wide range of InP deposition rates, using an ultralow growth rate of about 0.01 atomic monolayers/s, a quantum-dot density of 1 dot/{mu}m{sup 2} is realized. The resulting isolated InP quantum dots embedded in an InGaP matrix are individually characterized without the need for lithographical patterning and masks on the substrate. Such low-density quantum dots show excitonic emission at around 670 nm with a linewidth limited by instrument resolution. This system is applicable as a single-photon source for applications such as quantum cryptography.

  12. Mn/DOT's Project Peer Review

    E-Print Network [OSTI]

    Minnesota, University of

    issue we share with peers) ·Benchmark Mn/DOT's project management practices ·Initial step in a change decision- making ·Able to manage project change #12;Project Management Opportunities and Challenges ·TheMn/DOT's Project Management Peer Review Creating a Project Management Culture 2010 CTS Research

  13. Advanced Review RNA dot plots: an image

    E-Print Network [OSTI]

    Barash, Danny

    . In addition to similarity, dot plots were extended to possibly repre- sent interactions between building be easily incorporated in the dot plot. We then proceed from their passive use of providing RNA secondary be used to represent interactions between building blocks of biological sequences. This can be done

  14. 61 Wilder Street, O'Leary Library 3rd Floor | Lowell, MA 01854 Tel: 978.934.2797 | Fax: 978.934.2065 | Email: honors@uml.edu

    E-Print Network [OSTI]

    Massachusetts at Lowell, University of

    with a Commonwealth Honors designation the honors student must satisfy four CHP requirements. They are: CHP 1: Earn a 3.25 grade point average. CHP 2: Understand courses, just different courses. (see below). CHP 3: For each semester you

  15. Department of Psychology Honors Supervisor 390/399 and 490/499 Registration Form Please indicate the name of your Honors supervisor, as well as the topic of your thesis.

    E-Print Network [OSTI]

    Wang, Hao "Howard"

    Department of Psychology ­ Honors Supervisor 390/399 and 490/499 Registration Form Please indicate must arrange for a member of the Department of Psychology to supervise your Honors apprenticeship). The following information is required so that the Department of Psychology can keep accurate record of your

  16. Imaging Electrons in Few-Electron Quantum Dots

    E-Print Network [OSTI]

    Imaging Electrons in Few-Electron Quantum Dots A thesis presented by Parisa Fallahi to The Division Electrons in Few-Electron Quantum Dots Abstract Electrons in a one-electron quantum dot were imaged the tip-induced shift of the electron energy state in the dot. A technique for extracting the amplitude

  17. Quantum dots Orientation-Dependent Optical-Polarization Properties

    E-Print Network [OSTI]

    Quantum dots Orientation-Dependent Optical-Polarization Properties of Single Quantum Dots. Bakkers, Leo P. Kouwenhoven, and Val Zwiller Semiconductor quantum dots (QDs) are sources of single[1 studies, the InP section following dot growth was reduced, while for the samples used in our experiments

  18. Photodetectors based on colloidal quantum dots

    E-Print Network [OSTI]

    Oertel, David C. (David Charles)

    2007-01-01

    Inspired by recent work demonstrating photocurrent enhancement in quantum-dot (QD) solids via post-deposition chemical annealing and by recent successes incorporating single monolayers of QDs in light-emitting devices ...

  19. Synthesis and characterization of infrared quantum dots

    E-Print Network [OSTI]

    Harris, Daniel Kelly

    2014-01-01

    This thesis focuses on the development of synthetic methods to create application ready quantum dots (QDs) in the infrared for biological imaging and optoelectronic devices. I concentrated primarily on controlling the size ...

  20. Peptide coated quantum dots for biological applications

    E-Print Network [OSTI]

    2006-01-01

    23] W. C. W. Chan and S. M. Nie, “Quantum dot bioconjugatesThe resultant inorganic NIR QDOTs were also peptide-coatedInstitute of Health under Grant NIH 5 R01 EB000312. Asterisk

  1. First principle thousand atom quantum dot calculations

    SciTech Connect (OSTI)

    Wang, Lin-Wang; Li, Jingbo

    2004-03-30

    A charge patching method and an idealized surface passivation are used to calculate the single electronic states of IV-IV, III-V, II-VI semiconductor quantum dots up to a thousand atoms. This approach scales linearly and has a 1000 fold speed-up compared to direct first principle methods with a cost of eigen energy error of about 20 meV. The calculated quantum dot band gaps are parametrized for future references.

  2. Thermoelectric transport through strongly correlated quantum dots

    E-Print Network [OSTI]

    T. A. Costi; V. Zlatic

    2010-07-08

    The thermoelectric properties of strongly correlated quantum dots, described by a single level Anderson model coupled to conduction electron leads, is investigated using Wilson's numerical renormalization group method. We calculate the electronic contribution, $K_{\\rm e}$, to the thermal conductance, the thermopower, $S$, and the electrical conductance, $G$, of a quantum dot as a function of both temperature, $T$, and gate voltage, ${\\rm v}_g$, for strong, intermediate and weak Coulomb correlations, $U$, on the dot. For strong correlations and in the Kondo regime, we find that the thermopower exhibits two sign changes, at temperatures $T_{1}({\\rm v}_g)$ and $T_{2}({\\rm v}_g)$ with $T_{1}< T_{2}$. Such sign changes in $S(T)$ are particularly sensitive signatures of strong correlations and Kondo physics. The relevance of this to recent thermopower measurements of Kondo correlated quantum dots is discussed. We discuss the figure of merit, power factor and the degree of violation of the Wiedemann-Franz law in quantum dots. The extent of temperature scaling in the thermopower and thermal conductance of quantum dots in the Kondo regime is also assessed.

  3. Internal wave and boundary current generation by tidal flow over topography Amadeus Dettner, Harry L. Swinney, and M. S. Paoletti

    E-Print Network [OSTI]

    Texas at Austin. University of

    Internal wave and boundary current generation by tidal flow over topography Amadeus Dettner, Harry turbulence and small-scale internal waves above deep-ocean topography Phys. Fluids 25, 106604 (2013); 10.1063/1.4826888 Topographically induced internal solitary waves in a pycnocline: Secondary generation and selection criteria Phys

  4. Priming Effects of Television Food Advertising on Eating Behavior Jennifer L. Harris, John A. Bargh, and Kelly D. Brownell

    E-Print Network [OSTI]

    Bargh, John A.

    Priming Effects of Television Food Advertising on Eating Behavior Jennifer L. Harris, John A. Bargh of advertising for calorie-dense low-nutrient foods as a significant contributor to the obesity epidemic. This research tests the hypothesis that exposure to food advertising during TV viewing may also contribute

  5. Resonant Generation of Internal Waves on a Model Continental Slope H. P. Zhang, B. King, and Harry L. Swinney

    E-Print Network [OSTI]

    Resonant Generation of Internal Waves on a Model Continental Slope H. P. Zhang, B. King, and Harry wave generation in a laboratory model of oscillating tidal flow on a continental margin. Waves waves in the oceans are generated by oscillatory tides flowing over ocean to- pography

  6. Harmonic generation by reflecting internal waves Bruce Rodenborn, D. Kiefer, H. P. Zhang, and Harry L. Swinney

    E-Print Network [OSTI]

    Harmonic generation by reflecting internal waves Bruce Rodenborn, D. Kiefer, H. P. Zhang, and Harry 2011 The generation of internal gravity waves by tidal flow over topography is an important oceanic waves generated by tidal flow over topography. Near the generation region, the wave spectrum includes

  7. Linking Preterm Birth and Air Pollution in Harris County, Texas Joshua Warren, Montserrat Fuentes, Amy Herring, and Peter Langlois

    E-Print Network [OSTI]

    Davidian, Marie

    significant associations between air pollution and mortality were estimated in multiple cities throughoutLinking Preterm Birth and Air Pollution in Harris County, Texas Joshua Warren, Montserrat Fuentes, Amy Herring, and Peter Langlois September 24, 2010 Abstract Exposure to high levels of air pollution

  8. Spreadsheet-based interactive design and analysis of mechanisms using Excel Kabileshkumar G. Cheetancheri, Harry H. Cheng *

    E-Print Network [OSTI]

    Cheng, Harry H.

    for kinematic and dynamic analysis, graphical plotting, and animation for four bar, crank-slider, five barSpreadsheet-based interactive design and analysis of mechanisms using Excel and Ch Kabileshkumar G. Cheetancheri, Harry H. Cheng * Integration Engineering Laboratory, Department of Mechanical and Aeronautical

  9. An Analysis of Facebook Photo Caching Qi Huang, Ken Birman, Robbert van Renesse, Wyatt Lloyd, Sanjeev Kumar, Harry C. Li

    E-Print Network [OSTI]

    Keinan, Alon

    An Analysis of Facebook Photo Caching Qi Huang, Ken Birman, Robbert van Renesse, Wyatt Lloyd, Sanjeev Kumar, Harry C. Li Cornell University, Princeton University, Facebook Inc. Abstract This paper examines the workload of Facebook's photo- serving stack and the effectiveness of the many layers

  10. Using Normal Flow for Detection and Tracking of Limbs in Color Images Zoran Duric, Fayin Li, Yan Sun, Harry Wechsler

    E-Print Network [OSTI]

    Duric, Zoran

    Using Normal Flow for Detection and Tracking of Limbs in Color Images Zoran Duric, Fayin Li, Yan Sun, Harry Wechsler Department of Computer Science George Mason University Fairfax, VA 22030 {zduric and tracking human motions over various periods of time. In this paper we de- scribe a method of detecting

  11. 2 2000-01 Annual Schedule of Classes Veterans' Day honored as holiday

    E-Print Network [OSTI]

    Grether, Gregory

    2 2000-01 Annual Schedule of Classes Veterans' Day honored as holiday Beginning Fall Quarter 2000 been approved for the 2000-01 academic year.The Medical Insurance Plan (MIP), which is of- fered://www.registrar.ucla.edu/fees for updated information. Online processing becomes mandatory for MIP waivers Effective Fall Quarter 2000

  12. NEWS REPORT William L. Ogren was honored with a Lifetime Achievement

    E-Print Network [OSTI]

    Govindjee

    is a brief description of the 2010 Lifetime Achievement Award received by William (Bill) L. Ogren from; William Lucas, University of California at Davis; Harald Paulsen, Johannes Gutenberg University MainzNEWS REPORT William L. Ogren was honored with a Lifetime Achievement Award by the Rebeiz Foundation

  13. PREV'AIR, a modeling platform for the air quality predictability study , C. Honor2

    E-Print Network [OSTI]

    Menut, Laurent

    PREV'AIR, a modeling platform for the air quality predictability study Menut L.1 , C. Honoré2 , L Ministère de l'écologie et du développement durable, Paris, France This platform is proposed by the PREV'AIR about PREV'AIR ? please send an e-mail to cecile.honore@ineris.fr 1. Introduction Since 2002, the PREV'AIR

  14. C Compiler Targeting the Java Virtual Machine Senior Honors Thesis (Advisor: Javed A. Aslam)

    E-Print Network [OSTI]

    C Compiler Targeting the Java Virtual Machine Jack Pien Senior Honors Thesis (Advisor: Javed A to compile once and execute across many different platforms. With the emergence of the Internet by Sun Microsystems to address this "Write Once, Run Anywhere" problem. What sets a compiled Java program

  15. India Task Force Recommendations Membership: Venugopal Mendu (CASNR), Costica Bradatan (Honors), Rajesh Khara

    E-Print Network [OSTI]

    Rock, Chris

    India Task Force Recommendations Membership: Venugopal Mendu (CASNR), Costica Bradatan (Honors from India. Consider involving current Indian students at TTU and their home institutions or other with interests or connections to schools in India and a roster on TTU faculty travel to India for conferences

  16. Updated 3/19/2009 W.V.T. RUSCH ENGINEERING HONORS COLLOQUIUM

    E-Print Network [OSTI]

    Zhou, Chongwu

    Engineering Prof., UCSD, President, Viterbi Group 21 "The Methanol Economy," Prof. George Olah, Nobel LaureateUpdated 3/19/2009 W.V.T. RUSCH ENGINEERING HONORS COLLOQUIUM FALL 2008 SEMESTER OHE 122, 1:00pm ­ 1 Manager, Jet Propulsion Laboratory 19 "Engineering Our Way to Better Medical Devices," Dr. Walt Baxter

  17. Loyalty Fund + for deceased donors | ^ for young alumni 2014 Loyalty Fund Honor Roll | page 2

    E-Print Network [OSTI]

    Holliday, Mark A.

    Roll | page 2 2013­2014 Donors The 2014 Loyalty Fund Honor Roll includes alumni, friends and parents Steed Gold Scholars: $1,000-$4,999 Katherine Abbott-Beam '67 and David Beam Cynthia H. '71 and Robert H `77 Alan T. '69 and Cynthia Yount #12;+ for deceased donors | ^ for young alumni 2014 Loyalty Fund

  18. Rev. 07/25/2014 Honors Orientation Packet: First Semester Entry & Transfer

    E-Print Network [OSTI]

    Arnold, Jonathan

    Up Classes" Step 2: Search for a class: · Select the appropriate term from the drop-down box and click "Submit" · Select a Subject from the scrollable list, then click "Advanced Search" · Enter the course number in the Course Number box or · To search for all Honors course sections in a subject, enter

  19. FOR IMMEDIATE RELEASE: USC Asian Pacific Alumni Association to Honor First Asian American Justice on the

    E-Print Network [OSTI]

    Zhou, Chongwu

    Asia and the Pacific Rim) with USC and one another lifelong and worldwide through programsFOR IMMEDIATE RELEASE: USC Asian Pacific Alumni Association to Honor First Asian American Justice USC Asian Pacific Alumni Association Scholarship and Awards Gala: "Foundations of Excellence" on April

  20. Guest of Honor Brigadier General Mullen was commissioned via the NROTC program at Marquette

    E-Print Network [OSTI]

    Guest of Honor Brigadier General Mullen was commissioned via the NROTC program at Marquette as the Inspector-Instructor for Fox Company, 2nd Ba'alion, 24th Marines in Milwaukee, WI to a'end the School of Advanced Warfigh0ng in 2001. A"er school, he reported

  1. DONOR HONOR ROLL -2012 Michael Allen Alice L. Bean, PhD

    E-Print Network [OSTI]

    DONOR HONOR ROLL - 2012 > $1000 Michael Allen Alice L. Bean, PhD Gisela M. Dreschhoff, PhD LCDR, Inc COL Brenda S. Johnson and LTC Lindley N. Johnson Carleton J. Lindgren, PhD Jack W. Lowry. Pintar, PhD Stephen J. Sanders, PhD Robert D. Talty, PhD & Dorothy W. Talty Bruce A. Twarog, PhD

  2. Symposium in Honor of Dr. Richard Arnowitt Texas A&M, College Station, Texas

    E-Print Network [OSTI]

    Allen, Roland E.

    Symposium in Honor of Dr. Richard Arnowitt Texas A&M, College Station, Texas September 19, Texas A&M University 9:30 a.m. ­ 10:15 a.m. A OneWorld formulation of quantum mechanics Charles Pran Nath, Northeastern University 11:00 a.m. ­ 11:30 a.m. Break Chair: Wolfgang Schleich, Texas A

  3. Biomass cogeneration, Port Townsend, Washington Study by Honors 220c, Energy & Environment,

    E-Print Network [OSTI]

    Biomass cogeneration, Port Townsend, Washington Study by Honors 220c, Energy & Environment, Humans Townsend Biomass Power Plant When considering the slash sources that will be used to fuel the Port Townsend from the current 84,000 dry tons to 184,000 dry tons with the new biomass plant addition (Wise, 2012

  4. Rev. 07/25/2014 Honors Orientation Packet: First Semester Entry & Transfer

    E-Print Network [OSTI]

    Arnold, Jonathan

    , then click "Advanced Search" · Enter the course number in the Course Number box or · To search for all Honors course sections in a subject, enter "%H" in the Course Number box · Click on "Section Search" at bottom to be re-advised for the upcoming term, but the primary advisor for students in Franklin College (including

  5. Nanostructured architectures for colloidal quantum dot solar cells

    E-Print Network [OSTI]

    Jean, Joel, S.M. Massachusetts Institute of Technology

    2013-01-01

    This thesis introduces a novel ordered bulk heterojunction architecture for colloidal quantum dot (QD) solar cells. Quantum dots are solution-processed nanocrystals whose tunable bandgap energies make them a promising ...

  6. Surface treatment of nanocrystal quantum dots after film deposition

    DOE Patents [OSTI]

    Sykora, Milan; Koposov, Alexey; Fuke, Nobuhiro

    2015-02-03

    Provided are methods of surface treatment of nanocrystal quantum dots after film deposition so as to exchange the native ligands of the quantum dots for exchange ligands that result in improvement in charge extraction from the nanocrystals.

  7. Cornell dots research collaboration leads to $10M cancer center...

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

    Cornell dots research collaboration leads to 10M cancer center September 24th, 2015 ProvidedWiesner Lab A rendering of the molecular structure of a Cornell dot, which is...

  8. Electron tunneling and spin relaxation in a lateral quantum dot

    E-Print Network [OSTI]

    Amasha, Sami

    2008-01-01

    We report measurements that use real-time charge sensing to probe a single-electron lateral quantum dot. The charge sensor is a quantum point contact (QPC) adjacent to the dot and the sensitivity is comparable to other ...

  9. APh 150 Special Topics in Applied Physics -Introduction to Nanophotonics 3-0-6 Spring 2013 Instructor: Harry A. Atwater Prerequisite or concurrent: Physics 106, Physics 125

    E-Print Network [OSTI]

    Haile, Sossina M.

    APh 150 Special Topics in Applied Physics - Introduction to Nanophotonics 3-0-6 Spring 2013 Instructor: Harry A. Atwater Prerequisite or concurrent: Physics 106, Physics 125 An introductory survey

  10. Mechanical nanomanipulation of single strain-induced semiconductor quantum dots

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Mechanical nanomanipulation of single strain-induced semiconductor quantum dots C. Obermu¨ller, A of single strain-induced Ga0.9In0.1As quantum dots. This was achieved by scanning a metal coated tapered of the dots2 owing to the lattice mismatch between the materials. In this case the InP islands are acting

  11. Quantum Dot-Based Cell Motility Assay

    SciTech Connect (OSTI)

    Gu, Weiwei; Pellegrino, Teresa; Parak Wolfgang J; Boudreau,Rosanne; Le Gros, Mark A.; Gerion, Daniele; Alivisatos, A. Paul; Larabell, Carolyn A.

    2005-06-06

    Because of their favorable physical and photochemical properties, colloidal CdSe/ZnS-semiconductor nanocrystals (commonly known as quantum dots) have enormous potential for use in biological imaging. In this report, we present an assay that uses quantum dots as markers to quantify cell motility. Cells that are seeded onto a homogeneous layer of quantum dots engulf and absorb the nanocrystals and, as a consequence, leave behind a fluorescence-free trail. By subsequently determining the ratio of cell area to fluorescence-free track area, we show that it is possible to differentiate between invasive and noninvasive cancer cells. Because this assay uses simple fluorescence detection, requires no significant data processing, and can be used in live-cell studies, it has the potential to be a powerful new tool for discriminating between invasive and noninvasive cancer cell lines or for studying cell signaling events involved in migration.

  12. Bilayer graphene quantum dot defined by topgates

    SciTech Connect (OSTI)

    Müller, André; Kaestner, Bernd; Hohls, Frank; Weimann, Thomas; Pierz, Klaus; Schumacher, Hans W., E-mail: hans.w.schumacher@ptb.de [Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig (Germany)

    2014-06-21

    We investigate the application of nanoscale topgates on exfoliated bilayer graphene to define quantum dot devices. At temperatures below 500 mK, the conductance underneath the grounded gates is suppressed, which we attribute to nearest neighbour hopping and strain-induced piezoelectric fields. The gate-layout can thus be used to define resistive regions by tuning into the corresponding temperature range. We use this method to define a quantum dot structure in bilayer graphene showing Coulomb blockade oscillations consistent with the gate layout.

  13. Love, Sacrifice, and Honor: Warrior Virtues and the American Soldiers’ Experience of World War II 

    E-Print Network [OSTI]

    Williamson, Benjamin K.

    2010-07-14

    ....................................................... 40 Elliot Johnson................................................................................ 42 VI AWARDING VIRTUE: MEDALS OF HONOR AND THE AMERICAN SYSTEM OF MILITARY COMMENDATION................ 45 History of the American system... of morality and virtue. Furthermore, I will investigate the way in which ?warrior virtues? operated?or failed to operate?in the experiences of soldiers in World War II. As stated by James Turner Johnson in his book Morality and Contemporary Warfare, ?The...

  14. Electronic structure of self-assembled InAs quantum dots in InP: An anisotropic quantum-dot system

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Electronic structure of self-assembled InAs quantum dots in InP: An anisotropic quantum-dot system properties of InAs dots in GaAs for example, Refs. 1­3 and InP dots in GaxIn1 xP.4 An interesting quantum dot; revised manuscript received 9 March 1999 The electronic structure of self-assembled InAs quantum dots

  15. Geometric spin manipulation in semiconductor quantum dots

    SciTech Connect (OSTI)

    Prabhakar, Sanjay Melnik, Roderick; Inomata, Akira

    2014-04-07

    We propose a method to flip the spin completely by an adiabatic transport of quantum dots. We show that it is possible to flip the spin by inducing a geometric phase on the spin state of a quantum dot. We estimate the geometric spin flip time (approximately 2 ps) which turned out to be much shorter than the experimentally reported decoherence time (approximately 100 ns) that would provide an alternative means of fliping the spin before reaching decoherence. It is important that both the Rashba coupling and the Dresselhaus coupling are present for inducing a phase necessary for spin flip. If one of them is absent, the induced phase is trivial and irrelevant for spin-flip.

  16. Mode Competition in Dual-Mode Quantum Dots Semiconductor Microlaser

    E-Print Network [OSTI]

    Chusseau, Laurent; Viktorovitch, P; Letartre, Xavier

    2013-01-01

    This paper describes the modeling of quantum dots lasers with the aim of assessing the conditions for stable cw dual-mode operation when the mode separation lies in the THz range. Several possible models suited for InAs quantum dots in InP barriers are analytically evaluated, in particular quantum dots electrically coupled through a direct exchange of excitation by the wetting layer or quantum dots optically coupled through the homogeneous broadening of their optical gain. A stable dual-mode regime is shown possible in all cases when quantum dots are used as active layer whereas a gain medium of quantum well or bulk type inevitably leads to bistable behavior. The choice of a quantum dots gain medium perfectly matched the production of dual-mode lasers devoted to THz generation by photomixing.

  17. Mode Competition in Dual-Mode Quantum Dots Semiconductor Microlaser

    E-Print Network [OSTI]

    Laurent Chusseau; Fabrice Philippe; P. Viktorovitch; Xavier Letartre

    2013-03-07

    This paper describes the modeling of quantum dots lasers with the aim of assessing the conditions for stable cw dual-mode operation when the mode separation lies in the THz range. Several possible models suited for InAs quantum dots in InP barriers are analytically evaluated, in particular quantum dots electrically coupled through a direct exchange of excitation by the wetting layer or quantum dots optically coupled through the homogeneous broadening of their optical gain. A stable dual-mode regime is shown possible in all cases when quantum dots are used as active layer whereas a gain medium of quantum well or bulk type inevitably leads to bistable behavior. The choice of a quantum dots gain medium perfectly matched the production of dual-mode lasers devoted to THz generation by photomixing.

  18. Controlling quantum dot energies using submonolayer bandstructure engineering

    SciTech Connect (OSTI)

    Yu, L.; Law, S.; Wasserman, D.; Jung, D.; Lee, M. L.; Shen, J.; Cha, J. J.

    2014-08-25

    We demonstrate control of energy states in epitaxially-grown quantum dot structures formed by stacked submonolayer InAs depositions via engineering of the internal bandstructure of the dots. Transmission electron microscopy of the stacked sub-monolayer regions shows compositional inhomogeneity, indicative of the presence of quantum dots. The quantum dot ground state is manipulated not only by the number of deposited InAs layers, but also by control of the thickness and material composition of the spacing layers between submonolayer InAs depositions. In this manner, we demonstrate the ability to shift the quantum dot ground state energy at 77?K from 1.38?eV to 1.88?eV. The results presented offer a potential avenue towards enhanced control of dot energies for a variety of optoelectronic applications.

  19. Honors and the Senior Thesis in Hispanic Studies Seniors wishing to graduate with a Hispanic Studies major must enroll in HISP 198a

    E-Print Network [OSTI]

    Snider, Barry B.

    Honors and the Senior Thesis in Hispanic Studies Seniors wishing to graduate with a Hispanic in the Spring to complete the Senior Thesis. Departmental Honors are awarded on the basis of cumulative excellence in all courses taken for the major, but with primary emphasis on the excellence of the Thesis

  20. Deposition of colloidal quantum dots by microcontact printing for LED display technology

    E-Print Network [OSTI]

    Kim, LeeAnn

    2006-01-01

    This thesis demonstrates a new deposition method of colloidal quantum dots within a quantum dot organic light-emitting diode (QD-LED). A monolayer of quantum dots is microcontact printed as small as 20 ,Lm lines as well ...

  1. Steering of a Bosonic Mode with a Double Quantum Dot

    E-Print Network [OSTI]

    T. Brandes; N. Lambert

    2003-02-13

    We investigate the transport and coherence properties of a double quantum dot coupled to a single damped boson mode. Our numerically results reveal how the properties of the boson distribution can be steered by altering parameters of the electronic system such as the energy difference between the dots. Quadrature amplitude variances and the Wigner function are employed to illustrate how the state of the boson mode can be controlled by a stationary electron current through the dots.

  2. Sandia Energy - Research Challenge 2: Quantum Dots and Phosphors

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

    2: Quantum Dots and Phosphors Home Energy Research EFRCs Solid-State Lighting Science EFRC Our SSLS EFRC's Scientific Research Challenges and Publications Research Challenge 2:...

  3. Honoring the Legacy of Martin Luther King Jr. | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report11,SecurityHome solar systems can saveCommercial,Honoring

  4. Red Cross honors LLNL as biggest blood donor west of Mississippi | National

    National Nuclear Security Administration (NNSA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal GasAdministration Medal of HonorPosterNationalPrograms | NationalREPORT NT-15-1|Nuclear

  5. Honors and Recognition | OSTI, US Dept of Energy, Office of Scientific and

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeat Pumps Heat Pumps AnAbout Energy.govHonors Member ofTechnical

  6. Honoring Our Veterans through Jobs in Solar Energy | Department of Energy

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy, Ph.D.Food Drive Holiday FoodPagesExperiments |Honoring

  7. Lee Honored for Work in Plasma Simulations | Princeton Plasma Physics Lab

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousand CubicResourcelogo and-E C H N I C AFAQ »Lee Honored for Work

  8. R&D Magazine: Windows into Solar Power Sources with Quantum Dots

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

    Dots R&D Magazine: Windows into Solar Power Sources with Quantum Dots A luminescent solar concentrator is an emerging sunlight harvesting technology that has the potential to...

  9. Applicability of the {bold k}{center_dot}{bold p} method to the electronic structure of quantum dots

    SciTech Connect (OSTI)

    Fu, H.; Wang, L.; Zunger, A.

    1998-04-01

    The {bold k}{center_dot}{bold p} method has become the {open_quotes}standard model{close_quotes} for describing the electronic structure of nanometer-size quantum dots. In this paper we perform parallel {bold k}{center_dot}{bold p} (6{times}6 and 8{times}8) and direct-diagonalization pseudopotential studies on spherical quantum dots of an ionic material{emdash}CdSe, and a covalent material{emdash}InP. By using an equivalent input in both approaches, i.e., starting from a given atomic pseudopotential and deriving from it the Luttinger parameters in {bold k}{center_dot}{bold p} calculation, we investigate the effect of the different underlying wave-function representations used in {bold k}{center_dot}{bold p} and in the more exact pseudopotential direct diagonalization. We find that (i) the 6{times}6{bold k}{center_dot}{bold p} envelope function has a distinct (odd or even) parity, while atomistic wave function is parity-mixed. The 6{times}6{bold k}{center_dot}{bold p} approach produces an incorrect order of the highest valence states for both InP and CdSe dots: the p-like level is above the s-like level. (ii) It fails to reveal that the second conduction state in small InP dots is folded from the L point in the Brillouin zone. Instead, all states in {bold k}{center_dot}{bold p} are described as {Gamma}-like. (iii) The {bold k}{center_dot}{bold p} overestimates the confinement energies of both valence states and conduction states. A wave-function projection analysis shows that the principal reasons for these {bold k}{center_dot}{bold p} errors in dots are (a) use of restricted basis set, and (b) incorrect {ital bulk} dispersion relation. Error (a) can be reduced only by increasing the number of basis functions. Error (b) can be reduced by altering the {bold k}{center_dot}{bold p} implementation so as to bend upwards the second lowest bulk band, and to couple the conduction band into the s-like dot valence state. Our direct diagonalization approach provides an accurate and practical replacement to the standard model in that it is rather general, and can be performed simply on a standard workstation. {copyright} {ital 1998} {ital The American Physical Society}

  10. Farewell to a water resources legend: B.L. Harris retires after more than 10 years with the Texas Water Resources Institute 

    E-Print Network [OSTI]

    Kalisek, Danielle

    2011-01-01

    in the flower garden at his home. Photo by Danielle Kalisek, Texas Water Resources Institute. Photo manipulation by Mary-Margaret Shread, AgriLife Communications. A?er ?? years with the Texas Water Resources Institute (TWRI), Dr. B.L. Harris... that Harris is retiring, Jones feels sure that his legacy will continue. He adds, jokingly, ?We?re sure that a?er retiring twice, if he comes back for a third stint, he will convince the federal government to divert the Mississippi River to re...

  11. ARCS Additional FirstYear PhD Student Award The Atlanta chapter of ARCS has just informed me that they will honor us with another graduate student

    E-Print Network [OSTI]

    Arnold, Jonathan

    ARCS Additional FirstYear PhD Student Award The Atlanta chapter of ARCS has just informed me meets their definition listed above. Sincerely, Harry A. Dailey, Ph.D. Professor and Director

  12. Semiconductor Few-Electron Quantum Dots as Spin Qubits

    E-Print Network [OSTI]

    the experimental steps we have taken towards using a single electron spin, trapped in a semiconductor quantum dot detector is pushed to a faster regime (100 kHz), to detect single electron tunnel events in real time. WeSemiconductor Few-Electron Quantum Dots as Spin Qubits J.M. Elzerman1,2 , R. Hanson1 , L.H.W. van

  13. State DOT Representative Report Questions National Concrete Consortium

    E-Print Network [OSTI]

    , Texas April 2, 2009 Theme: Ride Quality for Bridges Please provide your state DOT's perspective regarding the following theme questions. Each NCC state DOT representative will be asked to present requirements set forth in the Caltrans Standard Specification 51-1.17 and which are tested for conformance

  14. General formulation for magnetohydrodynamic wave propagation, fire-hose, and mirror instabilities in Harris-type current sheets

    SciTech Connect (OSTI)

    Hau, L.-N. [Institute of Space Science, National Central University, Jhongli, Taiwan (China); Department of Physics, National Central University, Jhongli, Taiwan (China); Lai, Y.-T. [Institute of Space Science, National Central University, Jhongli, Taiwan (China)

    2013-02-15

    Harris-type current sheets with the magnetic field model of B-vector=B{sub x}(z)x-caret+B{sub y}(z)y-caret have many important applications to space, astrophysical, and laboratory plasmas for which the temperature or pressure usually exhibits the gyrotropic form of p{r_reversible}=p{sub Parallel-To }b-caretb-caret+p{sub Up-Tack }(I{r_reversible}-b-caretb-caret). Here, p{sub Parallel-To} and p{sub Up-Tack} are, respectively, to be the pressure component along and perpendicular to the local magnetic field, b-caret=B-vector/B. This study presents the general formulation for magnetohydrodynamic (MHD) wave propagation, fire-hose, and mirror instabilities in general Harris-type current sheets. The wave equations are expressed in terms of the four MHD characteristic speeds of fast, intermediate, slow, and cusp waves, and in the local (k{sub Parallel-To },k{sub Up-Tack },z) coordinates. Here, k{sub Parallel-To} and k{sub Up-Tack} are, respectively, to be the wave vector along and perpendicular to the local magnetic field. The parameter regimes for the existence of discrete and resonant modes are identified, which may become unstable at the local fire-hose and mirror instability thresholds. Numerical solutions for discrete eigenmodes are shown for stable and unstable cases. The results have important implications for the anomalous heating and stability of thin current sheets.

  15. Hyperfine interactions in silicon quantum dots

    E-Print Network [OSTI]

    Assali, Lucy V C; Capaz, Rodrigo B; Koiller, Belita; Hu, Xuedong; Sarma, S Das

    2010-01-01

    We present an all-electron calculation of the hyperfine parameters for conduction electrons in Si, showing that: (i) all parameters scale linearly with the spin density at a $^{29}$Si site; (ii) the isotropic term is over 30 times larger than the anisotropic part; (iii) conduction electron charge density at a Si nucleus is consistent with experimental estimates; (iv) Overhauser fields in natural Si quantum dots (QDs) are two orders of magnitude smaller than in GaAs QDs. This reinforces the outstanding performance of Si in keeping spin coherence and opens access to reliable quantitative information aiming at spintronic applications.

  16. DOT-7A packaging test procedure

    SciTech Connect (OSTI)

    Kelly, D.L.

    1995-01-23

    This test procedure documents the steps involved with performance testing of Department of Transportation Specification 7A (DOT-7A) Type A packages. It includes description of the performance tests, the personnel involved, appropriate safety considerations, and the procedures to be followed while performing the tests. Westinghouse Hanford Company (WHC) is conducting the evaluation and testing discussed herein for the Department of Energy-Headquarters, Division of Quality Verification and Transportation Safety (EH-321). Please note that this report is not in WHC format. This report is being submitted through the Engineering Documentation System so that it may be used for reference and information purposes.

  17. Nontoxic quantum dot research improves solar cells

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJessework usesofPublications64NewsroomNontoxic quantum dot research improves

  18. Predicted Ultrafast Single Qubit Operations in Semiconductor Quantum Dots

    E-Print Network [OSTI]

    Pryor, C E

    2002-01-01

    Several recently proposed implementations of scalable quantum computation rely on the ability to manipulate the spin polarization of individual electrons in semiconductors. The most rapid single-spin-manipulation technique to date relies on the generation of an effective magnetic field via a spin-sensitive optical Stark effect. This approach has been used to split spin states in colloidal CdSe quantum dots and to manipulate ensembles of spins in ZnMnSe quantum wells with femtosecond optical pulses. Here we report that the process will produce a coherent rotation of spin in quantum dots containing a single electron. The calculated magnitude of the effective magnetic field depends on the dot bandgap and the strain. We predict that in InAs/InP dots, for reasonable experimental parameters, the magnitude of the rotation is sufficient and the intrinsic error is low enough for them to serve as elements of a quantum dot based quantum computer.

  19. Predicted Ultrafast Single Qubit Operations in Semiconductor Quantum Dots

    E-Print Network [OSTI]

    C. E. Pryor; M. E. Flatté

    2002-11-25

    Several recently proposed implementations of scalable quantum computation rely on the ability to manipulate the spin polarization of individual electrons in semiconductors. The most rapid single-spin-manipulation technique to date relies on the generation of an effective magnetic field via a spin-sensitive optical Stark effect. This approach has been used to split spin states in colloidal CdSe quantum dots and to manipulate ensembles of spins in ZnMnSe quantum wells with femtosecond optical pulses. Here we report that the process will produce a coherent rotation of spin in quantum dots containing a single electron. The calculated magnitude of the effective magnetic field depends on the dot bandgap and the strain. We predict that in InAs/InP dots, for reasonable experimental parameters, the magnitude of the rotation is sufficient and the intrinsic error is low enough for them to serve as elements of a quantum dot based quantum computer.

  20. Numerical simulation of optical feedback on a quantum dot lasers

    SciTech Connect (OSTI)

    Al-Khursan, Amin H., E-mail: ameen_2all@yahoo.com [Thi-Qar University, Nassiriya Nanotechnology Research Laboratory (NNRL), Science College (Iraq); Ghalib, Basim Abdullattif [Babylon University, Laser Physics Department, Science College for Women (Iraq); Al-Obaidi, Sabri J. [Al-Mustansiriyah University, Physics Department, Science College (Iraq)

    2012-02-15

    We use multi-population rate equations model to study feedback oscillations in the quantum dot laser. This model takes into account all peculiar characteristics in the quantum dots such as inhomogeneous broadening of the gain spectrum, the presence of the excited states on the quantum dot and the non-confined states due to the presence of wetting layer and the barrier. The contribution of quantum dot groups, which cannot follow by other models, is simulated. The results obtained from this model show the feedback oscillations, the periodic oscillations which evolves to chaos at higher injection current of higher feedback levels. The frequency fluctuation is attributed mainly to wetting layer with a considerable contribution from excited states. The simulation shows that is must be not using simple rate equation models to express quantum dots working at excited state transition.

  1. 2015 New Mexico Science Olympiad Finals Congratulations to Albuquerque Academy on winning First Place and the honor of

    E-Print Network [OSTI]

    Borchers, Brian

    2015 New Mexico Science Olympiad Finals Congratulations to Albuquerque Academy on winning First Place and the honor of representing New Mexico at the National Science Olympiad in Lincoln, Nebraska New Mexico Military Institute Anatomy & Physiology 10TH V. Sue Cleveland High School 9TH Rio Rancho

  2. What Working on this Project Meant to Me from the Karns High School English II Honors Class 2006

    E-Print Network [OSTI]

    Pennycook, Steve

    this project including that Oak Ridge started as a key site of the Manhattan Project.It was great#12;What Working on this Project Meant to Me from the Karns High School English II Honors Class. Thishasbeenagreat experienceforme. ­BrookeMercer This was a rewarding and informative project. I had no idea how

  3. Ge/SiGe Quantum Confined Stark Effect Modulators on Silicon James S. Harris, Yu-Hsuan Kuo, and David A. B. Miller

    E-Print Network [OSTI]

    Miller, David A. B.

    Ge/SiGe Quantum Confined Stark Effect Modulators on Silicon James S. Harris, Yu-Hsuan Kuo bandwidth have been demonstrated [4]. 2. Quantum well design Ge is an indirect band gap material, but it has. In order to have good quantum confinement, SiGe barriers are used since Si and Ge have a very high direct

  4. Magnetic Exchange Coupling in Actinide-Containing Molecules Jeffrey D. Rinehart, T. David Harris, Stosh A. Kozimor, Bart M. Bartlett, and Jeffrey R. Long*

    E-Print Network [OSTI]

    Harris, Stosh A. Kozimor, Bart M. Bartlett, and Jeffrey R. Long* Department of Chemistry, Uni magnetic exchange interactions, including multiuranium, uranium-lanthanide, uranium-transition metal, and uranium-radical species. Interpretation of the magnetic susceptibility data for compounds of this type

  5. Competing interactions in semiconductor quantum dots

    SciTech Connect (OSTI)

    van den Berg, R.; Brandino, G. P.; El Araby, O.; Konik, R. M.; Gritsev, V.; Caux, J. -S.

    2014-10-01

    We introduce an integrability-based method enabling the study of semiconductor quantum dot models incorporating both the full hyperfine interaction as well as a mean-field treatment of dipole-dipole interactions in the nuclear spin bath. By performing free induction decay and spin echo simulations we characterize the combined effect of both types of interactions on the decoherence of the electron spin, for external fields ranging from low to high values. We show that for spin echo simulations the hyperfine interaction is the dominant source of decoherence at short times for low fields, and competes with the dipole-dipole interactions at longer times. On the contrary, at high fields the main source of decay is due to the dipole-dipole interactions. In the latter regime an asymmetry in the echo is observed. Furthermore, the non-decaying fraction previously observed for zero field free induction decay simulations in quantum dots with only hyperfine interactions, is destroyed for longer times by the mean-field treatment of the dipolar interactions.

  6. Competing interactions in semiconductor quantum dots

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

    van den Berg, R.; Brandino, G. P.; El Araby, O.; Konik, R. M.; Gritsev, V.; Caux, J. -S.

    2014-10-01

    We introduce an integrability-based method enabling the study of semiconductor quantum dot models incorporating both the full hyperfine interaction as well as a mean-field treatment of dipole-dipole interactions in the nuclear spin bath. By performing free induction decay and spin echo simulations we characterize the combined effect of both types of interactions on the decoherence of the electron spin, for external fields ranging from low to high values. We show that for spin echo simulations the hyperfine interaction is the dominant source of decoherence at short times for low fields, and competes with the dipole-dipole interactions at longer times. Onmore »the contrary, at high fields the main source of decay is due to the dipole-dipole interactions. In the latter regime an asymmetry in the echo is observed. Furthermore, the non-decaying fraction previously observed for zero field free induction decay simulations in quantum dots with only hyperfine interactions, is destroyed for longer times by the mean-field treatment of the dipolar interactions.« less

  7. Midwave infrared quantum dot avalanche photodiode David A. Ramirez,a

    E-Print Network [OSTI]

    Hayat, Majeed M.

    Midwave infrared quantum dot avalanche photodiode David A. Ramirez,a Jiayi Shao, Majeed M. Hayat . In the device, called the quantum dot avalanche photodiode, an intersubband quantum dots-in-a-well detector for any quantum dot detector. © 2010 American Institute of Physics. doi:10.1063/1.3520519 Single

  8. WIGNER MOLECULES IN SEMICONDUCTOR QUANTUM DOTS AND TRAPPED ULTRACOLD BOSONIC CLOUDS

    E-Print Network [OSTI]

    Yannouleas, Constantine

    WIGNER MOLECULES IN SEMICONDUCTOR QUANTUM DOTS AND TRAPPED ULTRACOLD BOSONIC CLOUDS Constantine], with a focus on the strongly correlated regime of electrons in two-dimensional semiconductor quantum dots (QDs dot [3]; (3) fractional-quantum-Hall-effect analogies and differences in graphene quantum dots at zero

  9. L d l l f ti iLandau level formation inLandau level formation inLandau level formation in G h t d tGraphene quantum dotsGraphene quantum dotsGraphene quantum dots

    E-Print Network [OSTI]

    Rotter, Stefan

    Graphene quantum dotsGraphene quantum dotsGraphene quantum dots 1 2 Florian Libisch Stefan Rotter Johannes . 50nm graphene 0 2 0 2010 50nm graphene d k ] 0.2 quantum dot A K K' li Hydrogen-terminated yk V H q measure of K K tt i iCalculate parametric scattering inp evolution of L li d d f / h g experimentevolution

  10. Honorable Mentions

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHigh energyHighland Viewdefault SignEnergyTechnology ofPostdoc

  11. Factorization of Dirac Equation and Graphene Quantum Dot

    E-Print Network [OSTI]

    Youness Zahidi; Ahmed Jellal; Hocine Bahlouli; Mohammed El Bouziani

    2014-05-14

    We consider a quantum dot described by a cylindrically symmetric 2D Dirac equation. The potentials representing the quantum dot are taken to be of different types of potential configuration, scalar, vector and pseudo-scalar to enable us to enrich our study. Using various potential configurations, we found that in the presence of a mass term an electrostatically confined quantum dot can accommodate true bound states, which is in agreement with previous work. The differential cross section associated with one specific potential configuration has been computed and discussed as function of the various potential parameters.

  12. Designing Small Silicon Quantum Dots with Low Reorganization Energy

    E-Print Network [OSTI]

    Zang, Xiaoning

    2015-01-01

    A first principles, excited state analysis is carried out to identify ways of producing silicon quantum dots with low excitonic reorganization energy. These focus on the general strategy of either reducing or constraining exciton-phonon coupling, and four approaches are explored. The results can be implemented in quantum dot solids to mitigate polaronic effects and increase the lifetime of coherent excitonic superpositions. It is demonstrated that such designs can also be used to alter the shape of the spectral density for reorganization so as to reduce the rates of both decoherence and dissipation. The results suggest that it may be possible to design quantum dot solids that support partially coherent exciton transport.

  13. Electron states in semiconductor quantum dots

    SciTech Connect (OSTI)

    Dhayal, Suman S.; Ramaniah, Lavanya M.; Ruda, Harry E.; Nair, Selvakumar V.

    2014-11-28

    In this work, the electronic structures of quantum dots (QDs) of nine direct band gap semiconductor materials belonging to the group II-VI and III-V families are investigated, within the empirical tight-binding framework, in the effective bond orbital model. This methodology is shown to accurately describe these systems, yielding, at the same time, qualitative insights into their electronic properties. Various features of the bulk band structure such as band-gaps, band curvature, and band widths around symmetry points affect the quantum confinement of electrons and holes. These effects are identified and quantified. A comparison with experimental data yields good agreement with the calculations. These theoretical results would help quantify the optical response of QDs of these materials and provide useful input for applications.

  14. Molecular techniques: Extracting DNA from dried dots, PCR and sequencing

    E-Print Network [OSTI]

    Schall, Joseph J.

    blood dot is cut from a disk with a razor blade (single sharp edge). Each blade is used twice, once design new primers for specific parasite genera and species. 5. Sequencing. We use the ABI Big

  15. Engineering a Robust Photovoltaic Device with Quantum Dots and Bacteriorhodopsin

    E-Print Network [OSTI]

    Renugopalakrishnan, Venkatesan

    We present a route toward a radical improvement in solar cell efficiency using resonant energy transfer and sensitization of semiconductor metal oxides with a light-harvesting quantum dot (QD)/bacteriorhodopsin (bR) layer ...

  16. Design and fabrication of quantum-dot lasers

    E-Print Network [OSTI]

    Nabanja, Sheila

    2008-01-01

    Semiconductor lasers using quantum-dots in their active regions have been reported to exhibit significant performance advantages over their bulk semiconductor and quantum-well counterparts namely: low threshold current, ...

  17. Quantum dot conjugates in a sub-micrometer fluidic channel

    DOE Patents [OSTI]

    Stavis, Samuel M.; Edel, Joshua B.; Samiee, Kevan T.; Craighead, Harold G.

    2010-04-13

    A nanofluidic channel fabricated in fused silica with an approximately 500 nm square cross section was used to isolate, detect and identify individual quantum dot conjugates. The channel enables the rapid detection of every fluorescent entity in solution. A laser of selected wavelength was used to excite multiple species of quantum dots and organic molecules, and the emission spectra were resolved without significant signal rejection. Quantum dots were then conjugated with organic molecules and detected to demonstrate efficient multicolor detection. PCH was used to analyze coincident detection and to characterize the degree of binding. The use of a small fluidic channel to detect quantum dots as fluorescent labels was shown to be an efficient technique for multiplexed single molecule studies. Detection of single molecule binding events has a variety of applications including high throughput immunoassays.

  18. Comparison of quantum confinement effects between quantum wires and dots

    SciTech Connect (OSTI)

    Li, Jingbo; Wang, Lin-Wang

    2004-03-30

    Dimensionality is an important factor to govern the electronic structures of semiconductor nanocrystals. The quantum confinement energies in one-dimensional quantum wires and zero-dimensional quantum dots are quite different. Using large-scale first-principles calculations, we systematically study the electronic structures of semiconductor (including group IV, III-V, and II-VI) surface-passivated quantum wires and dots. The band-gap energies of quantum wires and dots have the same scaling with diameter for a given material. The ratio of band-gap-increases between quantum wires and dots is material-dependent, and slightly deviates from 0.586 predicted by effective-mass approximation. Highly linear polarization of photoluminescence in quantum wires is found. The degree of polarization decreases with the increasing temperature and size.

  19. Symmetry causes a huge conductance peak in double quantum dots

    E-Print Network [OSTI]

    Robert S. Whitney; P. Marconcini; M. Macucci

    2009-02-18

    We predict a huge interference effect contributing to the conductance through large ultra-clean quantum dots of chaotic shape. When a double-dot structure is made such that the dots are the mirror-image of each other, constructive interference can make a tunnel barrier located on the symmetry axis effectively transparent. We show (via theoretical analysis and numerical simulation) that this effect can be orders of magnitude larger than the well-known universal conductance fluctuations and weak-localization (both less than a conductance quantum). A small magnetic field destroys the effect, massively reducing the double-dot conductance; thus a magnetic field detector is obtained, with a similar sensitivity to a SQUID, but requiring no superconductors.

  20. Hybrid organic/quantum dot thin film structures and devices

    E-Print Network [OSTI]

    Coe-Sullivan, Seth (Seth Alexander)

    2005-01-01

    Organic light emitting diodes have undergone rapid advancement over the course of the past decade. Similarly, quantum dot synthesis has progressed to the point that room temperature highly efficient photoluminescence can ...

  1. Quantum Dot Tracers for Use in Engineered Geothermal Systems

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objective: To develop and demonstrate a new class of tracers?semiconductor nanoparticles(quantum dots)?that offer great promise for use in characterizing fracture networks in EGS reservoirs.

  2. Los Alamos Quantum Dots for Solar, Display Technology

    SciTech Connect (OSTI)

    Klimov, Victor

    2015-04-13

    Quantum dots are ultra-small bits of semiconductor matter that can be synthesized with nearly atomic precision via modern methods of colloidal chemistry. Their emission color can be tuned by simply varying their dimensions. Color tunability is combined with high emission efficiencies approaching 100 percent. These properties have recently become the basis of a new technology – quantum dot displays – employed, for example, in the newest generation of e-readers and video monitors.

  3. Scalable quantum computer architecture with coupled donor-quantum dot qubits

    DOE Patents [OSTI]

    Schenkel, Thomas; Lo, Cheuk Chi; Weis, Christoph; Lyon, Stephen; Tyryshkin, Alexei; Bokor, Jeffrey

    2014-08-26

    A quantum bit computing architecture includes a plurality of single spin memory donor atoms embedded in a semiconductor layer, a plurality of quantum dots arranged with the semiconductor layer and aligned with the donor atoms, wherein a first voltage applied across at least one pair of the aligned quantum dot and donor atom controls a donor-quantum dot coupling. A method of performing quantum computing in a scalable architecture quantum computing apparatus includes arranging a pattern of single spin memory donor atoms in a semiconductor layer, forming a plurality of quantum dots arranged with the semiconductor layer and aligned with the donor atoms, applying a first voltage across at least one aligned pair of a quantum dot and donor atom to control a donor-quantum dot coupling, and applying a second voltage between one or more quantum dots to control a Heisenberg exchange J coupling between quantum dots and to cause transport of a single spin polarized electron between quantum dots.

  4. Fluorescence from a quantum dot and metallic nanosphere hybrid system

    SciTech Connect (OSTI)

    Schindel, Daniel G. [Department of Mathematics and Statistics, University of Winnipeg, 515 Portage Avenue, Winnipeg, MB, R3B 2E9 (Canada); Singh, Mahi R. [Department of Physics and Astronomy, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 3K7 (Canada)

    2014-03-31

    We present energy absorption and interference in a quantum dot-metallic nanosphere system embedded on a dielectric substrate. A control field is applied to induce dipole moments in the nanosphere and the quantum dot, and a probe field is applied to monitor absorption. Dipole moments in the quantum dot or the metal nanosphere are induced, both by the external fields and by each other's dipole fields. Thus, in addition to direct polarization, the metal nanosphere and the quantum dot will sense one another via the dipole-dipole interaction. The density matrix method was used to show that the absorption spectrum can be split from one peak to two peaks by the control field, and this can also be done by placing the metal sphere close to the quantum dot. When the two are extremely close together, a self-interaction in the quantum dot produces an asymmetry in the absorption peaks. In addition, the fluorescence efficiency can be quenched by the addition of a metal nanosphere. This hybrid system could be used to create ultra-fast switching and sensing nanodevices.

  5. FUNCTIONAL AND MECHANISTIC STUDY OF DOT1L IN MOUSE EMBRYONIC HEMATOPOIESIS

    E-Print Network [OSTI]

    Feng, Yi

    2012-12-31

    DOT1 is the histone 3 lysine 79 methyltransferase with both unique structure and substrate specificity. It plays critical role in telomere silencing maintenance, transcription regulation, DNA repair, and cell cycle regulation. DOT1L in mammals...

  6. Investigation of the Emission Properties of Quantum Dot-thermoresponsive Polymer Nanocomposite Hydrogels with Temperature 

    E-Print Network [OSTI]

    Juriani, Ameet Rajkumar

    2011-08-08

    This thesis presents a novel method for the preparation of quantum dot-thermoresponsive polymer nanocomposite hydrogels. The quantum dots (QD’s) were synthesized in a microwave reactor using a high temperature organometallic synthesis procedure...

  7. Size-Dependent Optoelectronic Properties and Controlled Doping of Semiconductor Quantum Dots

    E-Print Network [OSTI]

    Engel, Jesse Hart

    2013-01-01

    Quantum Dots by Jesse Hart Engel A dissertation submitted inCopyright 2013 by Jesse Hart Engel Abstract Size-DependentQuantum Dots by Jesse Hart Engel Doctor of Philosophy in

  8. Synthesis and structural characterization of ZnTe/ZnSe core/shell tunable quantum dots

    E-Print Network [OSTI]

    Guan, Juan

    2008-01-01

    Colloidal semiconductor nanocrystals or quantum dots have attracted much attention recently with their unique optical properties. Here we present a novel approach to synthesize ZnTe/ZnSe core/shell tunable quantum dots. ...

  9. Charge transport in nanopatterned PbS colloidal quantum dot arrays

    E-Print Network [OSTI]

    Ray, Nirat

    2015-01-01

    In this thesis, we study charge transport in nanopatterned arrays of PbS colloidal quantum dots using conventional two-probe measurements and an integrated charge sensor. PbS dots are synthesized in solution with an organic ...

  10. Fabrication and optimization of light emitting devices with core-shell quantum dots

    E-Print Network [OSTI]

    Song, Katherine Wei

    2013-01-01

    Quantum dot light emitting devices (QD-LEDs) are promising options for the next generation of solid state lighting, color displays, and other optoelectronic applications. Overcoating quantum dots (QDs) -- semiconducting ...

  11. Feasibility, pros, and cons of using DOT rights-of-way for stormwater quality treatment

    E-Print Network [OSTI]

    Teal, Michael

    2001-01-01

    DOT RIGHTS-OF-WAY FOR STORMWATER QUALITY TREATMENT MichaelAbstract In the past, DOT stormwater drainage facilitiesBMPs) for controlling stormwater. The idea has been that as

  12. An Investigation on Gel Electrophoresis with Quantum Dots End-labeled DNA 

    E-Print Network [OSTI]

    Chen, Xiaojia

    2009-05-15

    explored manipulating DNA fragments by end labeling DNA molecules with quantum dot nanocrystals. The quantum dot-DNA conjugates can be further modified through binding interactions with biotinylated single-stranded DNA primers. Single molecule visualization...

  13. Surround-gated vertical nanowire quantum dots M. H. M. van Weert,1

    E-Print Network [OSTI]

    arsenide phosphide InAsP quantum dots embedded in vertical surround-gated indium phosphide InP nanowires dots. The InAsP quantum dots, embedded in InP nanowires, are grown in the vapor-liquid-solid mode usingSurround-gated vertical nanowire quantum dots M. H. M. van Weert,1 M. den Heijer,1 M. P. van Kouwen

  14. Surface Induced Magnetism in Quantum Dots

    SciTech Connect (OSTI)

    Meulenberg, R W; Lee, J I

    2009-08-20

    The study of nanometer sized semiconductor crystallites, also known as quantum dots (QDs), has seen rapid advancements in recent years in scientific disciplines ranging from chemistry, physics, biology, materials science, and engineering. QD materials of CdSe, ZnSe, InP, as well as many others, can be prepared in the size range of 1-10 nm producing uniform, nearly monodisperse materials that are typically coated with organic molecules [1-3]. The strength of charge carrier confinement, which dictates the size-dependent properties, in these QDs depends on the nature of the material and can be correlated to the Bohr radius for the system of interest. For instance, the Bohr radius for CdSe is {approx} 5 nm, while in the more covalent structure of InP, the Bohr radius approaches {approx} 10 nm. The study of CdSe QDs has been particularly extensive during the last decade because they exhibit unique and tunable optical properties and are readily synthesized with high-crystallinity and narrow size dispersions. Although the core electronic properties of CdSe are explained in terms of the quantum confinement model, experimental efforts to elucidate the surface structure of these materials have been limited. Typically, colloidal CdSe QDs are coated with an organic surfactant, which typically consists of an organo-phosphine, -thiol, or -amine, that has the function of energetically relaxing defect states via coordination to partially coordinated surface atoms. The organic surfactant also acts to enhance carrier confinement and prevent agglomeration of the particles. Chemically, it has been shown that the bonding of the surfactant to the CdSe QD occurs through Cd atoms resulting cleavage of the Se atoms and formation of a Cd-rich (i.e. non-stoichiometric) particle [5].

  15. Physica E 34 (2006) 488492 Molecular states in a one-electron double quantum dot

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    2006-01-01

    2006 Abstract The transport spectrum of a strongly tunnel-coupled one-electron double quantum dot.20.Jc Keywords: Double quantum dot; Single electron tunneling; Delocalization; Molecular states of electrons trapped in a double quantum dot (DQD) down to N ¼ 1 [4­7]. Here, we study the transport spectrum

  16. Experimental demonstration of a latch in clocked quantum-dot cellular automata

    E-Print Network [OSTI]

    Orlov, Alexei

    by capacitively coupled gates. The middle dot acts as an adjustable barrier to control single-electron tunneling to one of the end dots depending on the input.8 Finally, when the clock is high, the electron is trapped floating micron-size metal dots, connected in series by multiple tunnel junctions and controlled

  17. Quantum dots and etch-induced depletion of a silicon two-dimensional electron gas

    E-Print Network [OSTI]

    Coppersmith, Susan N.

    Quantum dots and etch-induced depletion of a silicon two-dimensional electron gas L. J. Klein, K. L coupled quantum dots containing individual electrons whose spins act as qubits.4 We have made recent in a silicon quantum dot can be held constant for up to 11 hours. This fulfills an important milestone towards

  18. Version 5; 7 October 1999 Quantum dots induced by strain from buried and surface stressors

    E-Print Network [OSTI]

    Davies, John H.

    induced by strain from buried, self-assembled dot InP stressor InGaAs quantum well GaAs substrate GaVersion 5; 7 October 1999 Quantum dots induced by strain from buried and surface stressors John H 93106­4170 (Dated: 8 November 1999) Abstract Quantum dots can be induced in a quantum well by strain

  19. FEW ELECTRON QUANTUM DOTS IN InAs/InP CORE SHELL NANOWIRES

    E-Print Network [OSTI]

    Nygård, Jesper

    with a thin shell of InP, are explored as a system where a quantum dot can be defined and probed electricallyFEW ELECTRON QUANTUM DOTS IN InAs/InP CORE SHELL NANOWIRES By Shivendra Upadhyay Delft University . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.3 Quantum dots in disordered nanowires . . . . . . . . . . . . . . . . . 14 3 Fabrication 16 3

  20. Pauli-blocking imaging of single strain-induced semiconductor quantum dots

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    19 March 1999 The photoluminescence PL of InP strained-induced quantum dots in a GaInAs/GaAs quantumPauli-blocking imaging of single strain-induced semiconductor quantum dots C. Obermu¨ller, A of the electronic properties of self-assembled semiconductor quantum dots.2 High resolu- tion PL microscopy can

  1. Analysis of the efficiency of intermediate band solar cells based on quantum dot supercrystals

    SciTech Connect (OSTI)

    Heshmati, S; Golmohammadi, S; Abedi, K; Taleb, H

    2014-03-28

    We have studied the influence of the quantum-dot (QD) width and the quantum-dot conduction band (QD-CB) offset on the efficiency of quantum-dot intermediate band solar cells (QD-IBSCs). Simulation results demonstrate that with increasing QD-CB offset and decreasing QD width, the maximum efficiency is achieved. (laser applications and other topics in quantum electronics)

  2. Self-organized formation of quantum dots of a material on a substrate

    DOE Patents [OSTI]

    Zhang, Zhenyu (232 Long Bow Rd., Knoxville, TN 37922); Wendelken, John F. (925 Suwanee Rd., Knoxville, TN 37923); Chang, Ming-Che (F4-2, No. 178 Sec 5 Minsheng East Rd., Taipei, TW); Pai, Woei Wu (1F, No. 17, Alley 11, Lane 202, Ming Chyuan Rd., Pan Chou City, Taipei County, TW)

    2001-01-01

    Systems and methods are described for fabricating arrays of quantum dots. A method for making a quantum dot device, includes: forming clusters of atoms on a substrate; and charging the clusters of atoms such that the clusters of atoms repel one another. The systems and methods provide advantages because the quantum dots can be ordered with regard to spacing and/or size.

  3. Operational guidance for using DOT-6M/2R packaging

    SciTech Connect (OSTI)

    Kelly, D.L.; Hummer, J.H.

    1994-03-01

    The purpose of this paper is to describe a new US Department of Energy (DOE), Transportation Management Division task to create a US Department of Transportation (DOT) Specification 6M/2R packaging configuration user`s guide. The need for a user`s guide was identified because the DOT-6M/2R packaging configuration is widely used by DOE site contractors, and DOE receives many questions about the approved packaging configurations. Currently, two DOE organizations have the authority to approve new DOT-6M/2R configurations. For Defense Programs, the Transportation and Packaging Safety Division (EH-332) administers the program. For Environmental Restoration and Waste Management, the Transportation Management Division (EM-261) administers the program.

  4. Quasi-periodic quantum dot arrays produced by electrochemical synthesis

    SciTech Connect (OSTI)

    Bandyopadhyay, S.; Miller, A.E.; Yue, D.F.; Banerjee, G.; Ricker, R.E.; Jones, S.; Eastman, J.A.; Baugher, E.; Chandrasekhar, M.

    1994-06-01

    We discuss a ``gentle`` electrochemical technique for fabricating quasi-periodic quantum dot arrays. The technique exploits a self-organizing phenomenon to produce quasi-periodic arrangement of dots and provides excellent control over dot size and interdot spacing. Unlike conventional nanolithography, it does not cause radiation damage to the structures during exposure to pattern delineating beams (e-beam, ion-beam or x-ray). Moreover, it does not require harsh processing steps like reactive ion etching, offers a minimum feature size of {approximately}40 {angstrom}, allows the fabrication of structures on nonplanar surfaces (e.g. spherical or cylindrical substrates), is amenable to mass production (millions of wafers can be processed simultaneously) and is potentially orders of magnitude cheaper than conventional nanofabrication. In this paper, we describe our initial results and show the promise of this technique for low-cost and high-yield nanosynthesis.

  5. DOT-7A Type A packaging design guide

    SciTech Connect (OSTI)

    Kelly, D.L.

    1995-01-23

    The purpose of this Design Guide is to provide instruction for designing a U.S. Department of Transportation Specification 7A (DOT-7A) Type A packaging. Another purpose for this Design Guide is to support the evaluation and testing activities that are performed on new designs by a U.S. Department of Energy (DOE) test facility. This evaluation and testing program is called the DOT-7A Program. When an applicant has determined that a DOT-7A packaging is needed and not commercially available, a design may be created according to this document. The design should include a packaging drawing, specifications, analysis report, operating instructions, and a Packaging Qualification Checklist; all of which should be forwarded to a DOE/HQ approved test facility for evaluation and testing. This report is being submitted through the Engineering Documentation System so that it may be used for reference and information purposes.

  6. A prototype silicon double quantum dot with dispersive microwave readout

    SciTech Connect (OSTI)

    Schmidt, A. R. Henry, E.; Namaan, O.; Siddiqi, I.; Lo, C. C.; Wang, Y.-T.; Bokor, J.; Yablonovitch, E.; Li, H.; Greenman, L.; Whaley, K. B.; Schenkel, T.

    2014-07-28

    We present a unique design and fabrication process for a lateral, gate-confined double quantum dot in an accumulation mode metal-oxide-semiconductor (MOS) structure coupled to an integrated microwave resonator. All electrostatic gates for the double quantum dot are contained in a single metal layer, and use of the MOS structure allows for control of the location of the two-dimensional electron gas via the location of the accumulation gates. Numerical simulations of the electrostatic confinement potential are performed along with an estimate of the coupling of the double quantum dot to the microwave resonator. Prototype devices are fabricated and characterized by transport measurements of electron confinement and reflectometry measurements of the microwave resonator.

  7. Isotopic and internal CX{sub 3} (X=D,H) rotational motion effects in the Ba{center_dot}{center_dot}{center_dot}FCX{sub 3}+h{nu}{yields}BaF+CX{sub 3} intracluster reactions

    SciTech Connect (OSTI)

    Rinaldi, C. A.; Gasmi, K.; Skowronek, S.; Gonzalez Urena, A. [Unidad de Laseres y Haces Moleculares, Instituto Pluridisciplinar, Universidad Complutense de Madrid, Paseo Juan XXIII-1, 28040 Madrid (Spain)

    2006-06-28

    Photodepletion and action spectra of the laser-induced Ba{center_dot}{center_dot}{center_dot}FCD{sub 3} fragmentation have been measured over the 16 075-16 380 cm{sup -1} range. The observed band and peak structures allowed us to estimate the vibrational and rotational structures of the excited complex at the transition state configuration. The relative reaction probability P{sub R}(E) for the intracluster Ba{center_dot}{center_dot}{center_dot}FCD{sub 3}+h{nu}{yields}BaF+CD{sub 3} reaction has been determined over the cited energy range. P{sub R}(E) shows a peak structure with an energy spacing of 8.9 cm{sup -1} which was attributed to an internal rotation of the CD{sub 3} group in the intermediate state. A comparison with previous Ba{center_dot}{center_dot}{center_dot}FCH{sub 3} photofragmentation spectra reveals the dynamical role of the internal CX{sub 3} (X=H,D) motion which is manifested by the presence of rotational resonances in the laser-induced intracluster reaction.

  8. Optical control of the emission direction of a quantum dot

    SciTech Connect (OSTI)

    Luxmoore, I. J.; Wasley, N. A.; Fox, A. M.; Skolnick, M. S.; Ramsay, A. J.; Thijssen, A. C. T.; Oulton, R.; Hugues, M.; CNRS-CRHEA, rue Bernard Grégory, 06560 Valbonne

    2013-12-09

    Using the helicity of a non-resonant excitation laser, control over the emission direction of an InAs/GaAs quantum dot is demonstrated. The quantum dot is located off-center in a crossed-waveguide structure, such that photons of opposite circular polarization are emitted into opposite waveguide directions. By preferentially exciting spin-polarized excitons, the direction of emission can therefore be controlled. The directional control is quantified by using the ratio of the intensity of the light coupled into the two waveguides, which reaches a maximum of ±35%.

  9. Structure of droplet-epitaxy-grown InAs/GaAs quantum dots

    SciTech Connect (OSTI)

    Cohen, Eyal; Yochelis, Shira; Westreich, Ohad; Shusterman, Sergey; Kumah, Divine P.; Clarke, Roy; Yacoby, Yizhak; Paltiel, Yossi

    2011-09-06

    We have used a direct x-ray phasing method, coherent Bragg rod analysis, to obtain sub-angstrom resolution electron density maps of the InAs/GaAs dot system. The dots were grown by the droplet heteroepitaxy (DHE) technique and their structural and compositional properties are compared with those of dots grown by the strain-driven Stranski-Krastanov method. Our results show that the Ga diffusion into the DHE-grown dots is somewhat larger; however, other characteristics such as the composition of the dots uppermost layers, the interlayer spacing, and the bowing of the atomic layers are similar.

  10. Increased InAs quantum dot size and density using bismuth as a surfactant

    SciTech Connect (OSTI)

    Dasika, Vaishno D.; Krivoy, E. M.; Nair, H. P.; Maddox, S. J.; Park, K. W.; Yu, E. T.; Bank, S. R.; Jung, D.; Lee, M. L.

    2014-12-22

    We have investigated the growth of self-assembled InAs quantum dots using bismuth as a surfactant to control the dot size and density. We find that the bismuth surfactant increases the quantum dot density, size, and uniformity, enabling the extension of the emission wavelength with increasing InAs deposition without a concomitant reduction in dot density. We show that these effects are due to bismuth acting as a reactive surfactant to kinetically suppress the surface adatom mobility. This mechanism for controlling quantum dot density and size has the potential to extend the operating wavelength and enhance the performance of various optoelectronic devices.

  11. Intermediate-band photosensitive device with quantum dots having tunneling barrier embedded in organic matrix

    DOE Patents [OSTI]

    Forrest, Stephen R. (Ann Arbor, MI)

    2008-08-19

    A plurality of quantum dots each have a shell. The quantum dots are embedded in an organic matrix. At least the quantum dots and the organic matrix are photoconductive semiconductors. The shell of each quantum dot is arranged as a tunneling barrier to require a charge carrier (an electron or a hole) at a base of the tunneling barrier in the organic matrix to perform quantum mechanical tunneling to reach the respective quantum dot. A first quantum state in each quantum dot is between a lowest unoccupied molecular orbital (LUMO) and a highest occupied molecular orbital (HOMO) of the organic matrix. Wave functions of the first quantum state of the plurality of quantum dots may overlap to form an intermediate band.

  12. Height control of self-assembled quantum dots by strain engineering during capping

    SciTech Connect (OSTI)

    Grossi, D. F., E-mail: d.grossi@tue.nl; Koenraad, P. M. [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven (Netherlands); Smereka, P. [Department of Mathematics, University of Michigan, Ann Arbor, Michigan 48109 (United States); Keizer, J. G. [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven (Netherlands); Australian Research Council Centre of Excellence for Quantum Computation and Communications, School of Physics, University of New South Wales, Sydney 2052 (Australia); Ulloa, J. M. [Institute for Systems based on Optoelectronics and Microtechnology (ISOM), Universidad Politecnica de Madrid, Avenida Complutense 30, 28040 Madrid (Spain)

    2014-10-06

    Strain engineering during the capping of III-V quantum dots has been explored as a means to control the height of strained self-assembled quantum dots. Results of Kinetic Monte Carlo simulations are confronted with cross-sectional Scanning Tunnel Microscopy (STM) measurements performed on InAs quantum dots grown by molecular beam epitaxy. We studied InAs quantum dots that are capped by In{sub x}Ga{sub (1?x)}As layers of different indium compositions. Both from our realistic 3D kinetic Monte Carlo simulations and the X-STM measurements on real samples, a trend in the height of the capped quantum dot is found as a function of the lattice mismatch between the quantum dot material and the capping layer. Results obtained on additional material combinations show a generic role of the elastic energy in the control of the quantum dot morphology by strain engineering during capping.

  13. Portland Cement Concrete Pavement Shannon Golden, Alabama DOT

    E-Print Network [OSTI]

    Portland Cement Concrete Pavement Shannon Golden, Alabama DOT PORTLAND CEMENT CONCRETE PAVEMENT may be substituted for part of the required Portland cement. Substitution of mineral admixtures shall Cement shall not exceed the percentages shown in the following table: MAXIMUM ALLOWABLE SUBSTITUTION

  14. Supplementary Document CdSe quantum dot synthesis

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    dots is given as follows. Cadmium oxide, CdO (Acros Org.); oleic acid, OA (JT Baker); 1-octadecene, ODE. The cadmium stock solution has been prepared by mixing CdO, OA and ODE. The mixture is evacuated by raising-type (boron-doped) with a resistivity of 0.1-1 ·cm. The nanopillar diameter is defined by the nanosphere

  15. Hyperbolic metamaterials based on quantum-dot plasmon-resonator

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Hyperbolic metamaterials based on quantum-dot plasmon-resonator nanocomposites S. V. Zhukovsky,1, T function as multilayer hyperbolic metamateri- als. Depending on the thickness of the spacer between (2011)] and confirms that hyperbolic metamaterials are capable of increasing the radiative decay rate

  16. Quantum-Dot Cellular Automata SPICE Macro Model Northeastern University

    E-Print Network [OSTI]

    Ayers, Joseph

    and majority voter. A full-adder is designed with QCA cells using the SPICE model as a test vehicle describes a SPICE model development method- ology for Quantum-Dot Cellular Automata (QCA) cells and presents a SPICE model for QCA cells. The model is val- idated by simulating the basic logic gates such as inverter

  17. Folded-Light-Path Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    Folded-Light-Path Colloidal Quantum Dot Solar Cells Ghada I. Koleilat*, Illan J. Kramer*, Chris T-processed solar cells offer the promise of low cost, large-area processing, and, prospectively, high solar power solar cell performance20,21 . Results In the present work, we sought to increase the interaction

  18. Nonclassical Radiation from a Single Quantum Dot P. Michler1

    E-Print Network [OSTI]

    Buratto, Steve

    Nonclassical Radiation from a Single Quantum Dot P. Michler1 ) (a, b), A. Imamoglu (a), A. Kiraz (a nature of radiation and provides direct evi- dence that the emission source is a single two-level quantum of a single atom in an atomic beam [1] and from a single ion which has been stored in a radiofrequency trap [2

  19. Cavity Enhancement of Single Quantum Dot Emission in the Blue

    E-Print Network [OSTI]

    2009-12-27

    Abstract Cavity-enhanced single-photon emission in the blue spectral region was measured from single InGaN/GaN quantum dots. The low-Q microcavities used were characterized using micro-reflectance spectroscopy where the source was the enhanced blue...

  20. Washington State DOT Report: State Report Questions on MEPDG Implementation

    E-Print Network [OSTI]

    Washington State DOT Report: State Report Questions on MEPDG Implementation 1. Summarize your state to the MEPDG. · We are not confident that the models in MEPDG portray the type of cracking we see in Washington Washington on Interstate 5) but not modeled in the MEPDG. However, longitudinal cracking alone rarely

  1. TRICOLOR LIGHT EMITTING DIODE DOT MATRIX DISPLAY SYSTEM WITHAUDIO OUTPUT

    E-Print Network [OSTI]

    Pang, Grantham

    1 TRICOLOR LIGHT EMITTING DIODE DOT MATRIX DISPLAY SYSTEM WITHAUDIO OUTPUT Grantham Pang, Chi emitting diodes; tricolor display; audio communication. I. Introduction This paper relates to a tricolor broadcasting through the visible light rays transmitted by the display panel or assembly. Keywords: light

  2. Quantum dot-based nanomaterials for biological imaging

    E-Print Network [OSTI]

    Zimmer, John P. (John Philip)

    2006-01-01

    Quantum dot-based fluorescent probes were synthesized and applied to biological imaging in two distinct size regimes: (1) 100-1000 nm and (2) < 10 nm in diameter. The larger diameter range was accessed by doping CdSe/ZnS ...

  3. Polarization entangled photons from quantum dots embedded in nanowires

    E-Print Network [OSTI]

    Tobias Huber; Ana Predojevi?; Milad Khoshnegar; Dan Dalacu; Philip J. Poole; Hamed Majedi; Gregor Weihs

    2014-06-02

    We present a first measurement of photon polarization entanglement from the biexciton to ground state cascade of a single InAsP quantum dot embedded in an InP nanowire. We observe a fidelity of 0.76(2) to a reference maximally entangled state as well as a concurrence of 0.57(6).

  4. Molecular Imaging: Physics and Bioapplications of Quantum Dots

    E-Print Network [OSTI]

    Michalet, Xavier

    the tech- niques used to interface these inorganic materials to the bio- logical world. It concludes 8.3.6 Lasers, LED, and Photovoltaic Cells 117 8.4 Synthesis of Colloidal Nanocrystals 119 8.4.1 Synthesis 119 8.4.2 Solubilization 120 8.4.3 Functionalization 121 8.5 Applications of Quantum Dot

  5. State DOT: UTAH State Report Questions on NDT Testing

    E-Print Network [OSTI]

    are entirely non-destructive. We use maturity meters to approximate strength for opening to traffic, and haveState DOT: UTAH State Report Questions on NDT Testing 1. What NDT testing methods for concrete). Research: NDT methods being investigated include: Visual distress mapping, Pachometer testing, Resistivity

  6. Depleted-Heterojunction Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    -processed single-junction cells and also multijunction architectures. Size-effect tuning also en- ables the useDepleted-Heterojunction Colloidal Quantum Dot Solar Cells Andras G. Pattantyus-Abraham,, Illan J requires thick, high-purity solar cells with correspondingly long carrier transport lengths;3 organic

  7. Editorial: Physical Review in Physics Education Research 2.0 I am honored to be selected as the Editor of Physical

    E-Print Network [OSTI]

    Henderson, Charles

    are turned away for financial reasons. Thanks to the support of the American Physical Society, APS ForumEditorial: Physical Review in Physics Education Research 2.0 I am honored to be selected as the Editor of Physical Review Special Topics - Physics Education Research (PRST-PER). I am fortunate

  8. Enhanced Performance of CdS/CdSe Quantum Dot Cosensitized Solar Cells via Homogeneous Distribution of Quantum Dots in TiO2

    E-Print Network [OSTI]

    Cao, Guozhong

    , simply increasing film thickness did not make significant contribution to improving solar cell efficiencyEnhanced Performance of CdS/CdSe Quantum Dot Cosensitized Solar Cells via Homogeneous Distribution cosensitized solar cells. The CdS and CdSe quantum dots were prepared on TiO2 mesoporous film through

  9. Do you think that DOTS may have your bicycle? DOTS currently has hundreds of bicycles in our bicycle impound that have been lost, abandoned, or

    E-Print Network [OSTI]

    Lathrop, Daniel P.

    Do you think that DOTS may have your bicycle? DOTS currently has hundreds of bicycles in our bicycle impound that have been lost, abandoned, or impounded. Many of these bikes are similar models and colors and therefore we are unable to identify your bicycle without detailed information and time to look

  10. Simulation of quantum dots size and spacing effect for intermediate band solar cell application based on InAs quantum dots arrangement in GaAs

    SciTech Connect (OSTI)

    Hendra, P. I. B. Rahayu, F. Darma, Y.

    2014-03-24

    Intermediate band solar cell (IBSC) has become a promising technology in increasing solar cell efficiency. In this work we compare absorption coefficient profile between InAs quantum dots with GaAs bulk. We calculate the efficiency of GaAs bulk and GaAs doped with 2, 5, and 10 nm InAs quantum dot. Effective distances in quantum dot arrangement based on electron tunneling consideration were also calculated. We presented a simple calculation method with low computing power demand. Results showed that arrangement of quantum dot InAs in GaAs can increase solar cell efficiency from 23.9 % initially up to 60.4%. The effective distance between two quantum dots was found 2 nm in order to give adequate distance to prevent electron tunneling and wave functions overlap.

  11. Optical, electronic, and structural properties of uncoupled and close-packed arrays of InP quantum dots

    SciTech Connect (OSTI)

    Micic, O.I.; Jones, K.M.; Cahill, A.; Nozik, A.J.

    1998-12-03

    Solid films consisting of close-packed arrays of InP quantum dots have been prepared by slowly evaporating colloidal solutions of InP quantum dots. The diameters of the quantum dots were controlled to be between about 30 to 60 {angstrom}; size-selective precipitation yielded a size distribution of about 10% about the mean diameter. The arrays show regions of hexagonal order, as well as disordered regions. Oxide layers can form irreversibly on the quantum dot surface and limit the effectiveness of the size-selective precipitation. Photoluminescence spectra obtained from close-packed films of InP quantum dots formed from quantum dots with a single mean diameter and from a mixture of two quantum dot sizes show that energy transfer occurs from the photoexcited smaller quantum dots to the larger quantum dots. The efficiency of this energy transfer process is high.

  12. Single-electron shuttle based on a silicon quantum dot

    E-Print Network [OSTI]

    K. W. Chan; M. Mottonen; A. Kemppinen; N. S. Lai; K. Y. Tan; W. H. Lim; A. S. Dzurak

    2011-10-05

    We report on single-electron shuttling experiments with a silicon metal-oxide-semiconductor quantum dot at 300 mK. Our system consists of an accumulated electron layer at the Si/SiO_2 interface below an aluminum top gate with two additional barrier gates used to deplete the electron gas locally and to define a quantum dot. Directional single-electron shuttling from the source and to the drain lead is achieved by applying a dc source-drain bias while driving the barrier gates with an ac voltage of frequency f_p. Current plateaus at integer levels of ef_p are observed up to f_p = 240 MHz operation frequencies. The observed results are explained by a sequential tunneling model which suggests that the electron gas may be heated substantially by the ac driving voltage.

  13. Facile synthesis and photoluminescence mechanism of graphene quantum dots

    SciTech Connect (OSTI)

    Yang, Ping; Zhou, Ligang; Zhang, Shenli; Pan, Wei Shen, Wenzhong; Wan, Neng

    2014-12-28

    We report a facile hydrothermal synthesis of intrinsic fluorescent graphene quantum dots (GQDs) with two-dimensional morphology. This synthesis uses glucose, concentrate sulfuric acid, and deionized water as reagents. Concentrated sulfuric acid is found to play a key role in controlling the transformation of as-prepared hydrothermal products from amorphous carbon nanodots to well-crystallized GQDs. These GQDs show typical absorption characteristic for graphene, and have nearly excitation-independent ultraviolet and blue intrinsic emissions. Temperature-dependent PL measurements have demonstrated strong electron-electron scattering and electron-phonon interactions, suggesting a similar temperature behavior of GQDs to inorganic semiconductor quantum dots. According to optical studies, the ultraviolet emission is found to originate from the recombination of electron-hole pairs localized in the C=C bonds, while the blue emission is from the electron transition of sp{sup 2} domains.

  14. Resonant scattering of surface plasmon polaritons by dressed quantum dots

    SciTech Connect (OSTI)

    Huang, Danhong; Cardimona, Dave; Easter, Michelle; Gumbs, Godfrey; Maradudin, A. A.; Lin, Shawn-Yu; Zhang, Xiang

    2014-06-23

    The resonant scattering of surface plasmon-polariton waves (SPP) by embedded semiconductor quantum dots above the dielectric/metal interface is explored in the strong-coupling regime. In contrast to non-resonant scattering by a localized dielectric surface defect, a strong resonant peak in the spectrum of the scattered field is predicted that is accompanied by two side valleys. The peak height depends nonlinearly on the amplitude of SPP waves, reflecting the feedback dynamics from a photon-dressed electron-hole plasma inside the quantum dots. This unique behavior in the scattered field peak strength is correlated with the occurrence of a resonant dip in the absorption spectrum of SPP waves due to the interband photon-dressing effect. Our result on the scattering of SPP waves may be experimentally observable and applied to spatially selective illumination and imaging of individual molecules.

  15. Nanoscale optical positioning of single quantum dots for bright and pure single-photon emission

    E-Print Network [OSTI]

    Luca Sapienza; Marcelo Davanco; Antonio Badolato; Kartik Srinivasan

    2015-08-05

    Self-assembled, epitaxially-grown InAs/GaAs quantum dots are promising semiconductor quantum emitters that can be integrated on a chip for a variety of photonic quantum information science applications. However, self-assembled growth results in an essentially random in-plane spatial distribution of quantum dots, presenting a challenge in creating devices that exploit the strong interaction of single quantum dots with highly confined optical modes. Here, we present a photoluminescence imaging approach for locating single quantum dots with respect to alignment features with an average position uncertainty technology for the creation of optimized single quantum dot devices. To that end, we create quantum dot single-photon sources, based on a circular Bragg grating geometry, that simultaneously exhibit high collection efficiency (48 % +/- 5 % into a 0.4 numerical aperture lens, close to the theoretically predicted value of 50 %), low multiphoton probability (g(2)(0) <1 %), and a significant Purcell enhancement factor (~ 3).

  16. A Reconfigurable Gate Architecture for Si/SiGe Quantum Dots

    E-Print Network [OSTI]

    D. M. Zajac; T. M. Hazard; X. Mi; K. Wang; J. R. Petta

    2015-02-05

    We demonstrate a reconfigurable quantum dot gate architecture that incorporates two interchangeable transport channels. One channel is used to form quantum dots and the other is used for charge sensing. The quantum dot transport channel can support either a single or a double quantum dot. We demonstrate few-electron occupation in a single quantum dot and extract charging energies as large as 6.6 meV. Magnetospectroscopy is used to measure valley splittings in the range of 35-70 microeV. By energizing two additional gates we form a few-electron double quantum dot and demonstrate tunable tunnel coupling at the (1,0) to (0,1) interdot charge transition.

  17. Entanglement distribution for a practical quantum-dot-based quantum processor architecture

    E-Print Network [OSTI]

    Timothy P. Spiller; Irene D'Amico; Brendon W. Lovett

    2007-04-13

    We propose a quantum dot architecture for enabling universal quantum information processing. Quantum registers, consisting of arrays of vertically stacked self-assembled semiconductor quantum dots, are connected by chains of in-plane self-assembled dots. We propose an entanglement distributor, a device for producing and distributing maximally entangled qubits on demand, communicated through in-plane dot chains. This enables the transmission of entanglement to spatially separated register stacks, providing a resource for the realisation of a sizeable quantum processor built from coupled register stacks of practical size. Our entanglement distributor could be integrated into many of the present proposals for self-assembled quantum dot-based quantum computation. Our device exploits the properties of simple, relatively short, spin-chains and does not require microcavities. Utilizing the properties of self-assembled quantum dots, after distribution the entanglement can be mapped into relatively long lived spin qubits and purified, providing a flexible, distributed, off-line resource.

  18. Computational models for the berry phase in semiconductor quantum dots

    SciTech Connect (OSTI)

    Prabhakar, S. Melnik, R. V. N.; Sebetci, A.

    2014-10-06

    By developing a new model and its finite element implementation, we analyze the Berry phase low-dimensional semiconductor nanostructures, focusing on quantum dots (QDs). In particular, we solve the Schrödinger equation and investigate the evolution of the spin dynamics during the adiabatic transport of the QDs in the 2D plane along circular trajectory. Based on this study, we reveal that the Berry phase is highly sensitive to the Rashba and Dresselhaus spin-orbit lengths.

  19. Photo-Activated Luminescence of CdSe Quantum Dot Monolayers S. R. Cordero, P. J. Carson, R. A. Estabrook, G. F. Strouse, and S. K. Buratto*

    E-Print Network [OSTI]

    Photo-Activated Luminescence of CdSe Quantum Dot Monolayers S. R. Cordero, P. J. Carson, R. A passivation is even more critical in quantum dot solids where inter-dot coupling reduces the QY of the film

  20. Photoluminescence spectral study of single CdSe/ZnS Colloidal Nanocrystals in Poly(methyl methacrylate) and Quantum Dots molecules

    E-Print Network [OSTI]

    Shen, Yaoming

    2008-01-01

    in self- assembled inp quantum dots in gainp. Phys. Rev. B,in self-assembled inp quantum dots. Phys. Rev. Lett. , 86(also been observed in InP quantum dots in a Ga x In 1?x P

  1. Financial and Technical Resources for Completing Energy Efficiency Projects - The DOT/FTA Perspective 

    E-Print Network [OSTI]

    Koski, D.

    2011-01-01

    and Technical Resources for Completing Energy Efficiency Projects ? The DOT/FTA Perspective Don Koski, FTA Region VI CATEE Conference November 9, 2011 ?FTA is part of the US DOT with a mission to support public transit through grant programs and policies...://www.ctod.org/portal/ ? National Transit Institute ? Courses on Land Use/Transportation and Transit Oriented Development ? www.ntionline.com FTA Livability Resource Examples Transportation Planning Capacity Building Program http://planning.dot.gov/ Tools for Regional...

  2. NREL Certifies First All-Quantum-Dot Photovoltaic Cell; Demonstrates Stability, Performance (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-02-01

    Researchers at the National Renewable Energy Laboratory (NREL) have certified the first all-quantum-dot photovoltaic cell, which was based on lead sulfide and demonstrated reasonable quantum dot solar cell performance for an initial efficiency measurement along with good stability. The certified open-circuit voltage of the quantum dot cell is greater than that possible from bulk lead sulfide because of quantum confinement.

  3. Formation of long-range ordered quantum dots arrays in amorphous matrix by ion beam irradiation

    SciTech Connect (OSTI)

    Buljan, M.; Bogdanovic-Radovic, I.; Karlusic, M.; Desnica, U. V.; Radic, N.; Dubcek, P.; Drazic, G.; Salamon, K.; Bernstorff, S.; Holy, V.

    2009-08-10

    We demonstrate the production of a well ordered three-dimensional array of Ge quantum dots in amorphous silica matrix. The ordering is achieved by ion beam irradiation and annealing of a multilayer film. Structural analysis shows that quantum dots nucleate along the direction of the ion beam used for irradiation, while the mutual distance of the quantum dots is determined by the diffusion properties of the multilayer material rather than the distances between traces of ions that are used for irradiation.

  4. Excited-state spectroscopy of InP quantum dots

    SciTech Connect (OSTI)

    Bertram, D.; Micic, O.I.; Nozik, A.J.

    1998-02-01

    We have measured low-temperature size-selective photoluminescence excitation spectra of high-quality InP quantum dots prepared by collodial chemistry. A set of samples with mean emission energies in the range from 1.9 to 2.2 eV was investigated. All samples have a size distribution of about 10{percent}, resulting in an inhomogeneously broadened photoluminescence lineshape. Due to the finite size distribution, spectra were collected at different detection wavelengths to reveal the energies of the excited excitonic states. The size dependence of the quantization energies of InP nanoparticles was determined by measuring photoluminescence excitation at different detection energies within one sample. Up to eight excited-state transitions in a set of seven samples were observed, as the estimated quantum dot size was scanned from 1.8 to 4.0 nm. A comparison of the observed peaks with a six-band {bold k}{center_dot}{bold p} calculation is given. In contrast to the successful interpretation in the case of CdSe, no agreement between the calculated and the observed excited-state energies is achieved. {copyright} {ital 1998} {ital The American Physical Society}

  5. Photoconductivity of Si/Ge multilayer structures with Ge quantum dots pseudomorphic to the Si matrix

    SciTech Connect (OSTI)

    Talochkin, A. B., E-mail: tal@thermo.isp.nsc.ru; Chistokhin, I. B. [Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation)

    2011-07-15

    Longitudinal photoconductivity spectra of Si/Ge multilayer structures with Ge quantum dots grown pseudomorphically to the Si matrix are studied. Lines of optical transitions between hole levels of quantum dots and Si electronic states are observed. This allowed us to construct a detailed energy-level diagram of electron-hole levels of the structure. It is shown that hole levels of pseudomorphic Ge quantum dots are well described by the simplest 'quantum box' model using actual sizes of Ge islands. The possibility of controlling the position of the long-wavelength photosensitivity edge by varying the growth parameters of Si/Ge structures with Ge quantum dots is determined.

  6. A Graphene Quantum Dot with a Single Electron Transistor as Integrated Charge Sensor

    E-Print Network [OSTI]

    Ling-Jun Wang; Gang Cao; Tao Tu; Hai-Ou Li; Cheng Zhou; Xiao-Jie Hao; Zhan Su; Guang-Can Guo; Guo-Ping Guo; Hong-Wen Jiang

    2010-08-28

    We have developed an etching process to fabricate a quantum dot and a nearby single electron transistor as a charge detector in a single layer graphene. The high charge sensitivity of the detector is used to probe Coulomb diamonds as well as excited spectrum in the dot, even in the regime where the current through the quantum dot is too small to be measured by conventional transport means. The graphene based quantum dot and integrated charge sensor serve as an essential building block to form a solid-state qubit in a nuclear-spin-free quantum world.

  7. Charging dynamics of a floating gate transistor with site-controlled quantum dots

    SciTech Connect (OSTI)

    Maier, P. Hartmann, F.; Emmerling, M.; Schneider, C.; Höfling, S.; Kamp, M.; Worschech, L.

    2014-08-04

    A quantum dot memory based on a GaAs/AlGaAs quantum wire with site-controlled InAs quantum dots was realized by means of molecular beam epitaxy and etching techniques. By sampling of different gate voltage sweeps for the determination of charging and discharging thresholds, it was found that discharging takes place at short time scales of ?s, whereas several seconds of waiting times within a distinct negative gate voltage range were needed to charge the quantum dots. Such quantum dot structures have thus the potential to implement logic functions comprising charge and time dependent ingredients such as counting of signals or learning rules.

  8. Photovoltaic performance of ultra-small PbSe quantum dots

    E-Print Network [OSTI]

    Ma, Wanli

    2014-01-01

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

  9. Comment on "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"

    E-Print Network [OSTI]

    Scully, Marlan O

    2010-01-01

    This is a comment on PRL paper by A.P. Kirk "Analysis of quantum coherent semiconductor quantum dot p-i-n junction photovoltaic cells"

  10. Giant Nanocrystal Quantum Dots as Stable and Efficient Down-Conversion

    Office of Scientific and Technical Information (OSTI)

    Dots as Stable and Efficient Down-Conversion Phosphor for LED based Solid State Lighting Kundu, Janardan Los Alamos National Laboratory; Ghosh, Yagnaseni Los Alamos...

  11. Understanding colloidal quantum dot excitation with solution photon correlation fourier spectroscopy

    E-Print Network [OSTI]

    Heathcote, S. Leigh (Stephanie Leigh)

    2015-01-01

    Colloidal quantum dots (CQDs) have useful absorption and emission properties but exist in inhomogenous batches. Solution photon correlation fourier spectroscopy (S-PCFS) combines interferometry with fluorescence correlation ...

  12. Intracellular Tracking of Single Native Molecules with Electroporation-Delivered Quantum Dots

    E-Print Network [OSTI]

    Lu, Chang

    Intracellular Tracking of Single Native Molecules with Electroporation-Delivered Quantum Dots Chen Sun, Zhenning Cao, Min Wu, and Chang Lu*,,§ School of Biomedical Engineering and Sciences, Virginia

  13. PUBLICATIONS ON THE MICROBIAL SAFETY OF NUTS AND SESAME SEEDS M. Palumbo, L. R. Beuchat, M. D. Danyluk, and L. J. Harris, USDA NIFSI, 2009-01951. Updated 1/12/2015.

    E-Print Network [OSTI]

    Ishida, Yuko

    PUBLICATIONS ON THE MICROBIAL SAFETY OF NUTS AND SESAME SEEDS M. Palumbo, L. R. Beuchat, M. D://ucfoodsafety.ucdavis.edu/files/169907.pdf 1 Publications on the Microbial Safety of Nuts and Sesame Seeds To report or cite, please use the following citation: Palumbo, M., L. R. Beuchat, M. D. Danyluk, and L. J. Harris. 2015. Publications

  14. Student Accounting Grace E. Harris Hall Student Service Center 1015 Floyd Ave., 1st Floor P.O. Box 843036 Richmond, VA 23284-3036 (804) 828-2228 Fax (804) 828-5463 www.enrollment.vcu.edu/accounting

    E-Print Network [OSTI]

    Hammack, Richard

    Student Accounting · Grace E. Harris Hall Student Service Center · 1015 Floyd Ave., 1st Floor · P.O. Box 843036 · Richmond, VA 23284-3036 (804) 828-2228 · Fax (804) 828-5463 · www.enrollment.vcu.edu/accounting excess financial aid (not in excess of $200) to any prior academic year charges on my account. 3. I

  15. Student Accounting Grace E. Harris Hall Student Service Center 1015 Floyd Ave., 1st Floor P.O. Box 843036 Richmond, VA 23284-3036 (804) 828-2228 Fax (804) 828-5463 www.enrollment.vcu.edu/accounting

    E-Print Network [OSTI]

    Hammack, Richard

    Student Accounting · Grace E. Harris Hall Student Service Center · 1015 Floyd Ave., 1st Floor · P.O. Box 843036 · Richmond, VA 23284-3036 (804) 828-2228 · Fax (804) 828-5463 · www.enrollment.vcu.edu/accounting-digit routing transit number and your account number. I hereby authorize and request Virginia Commonwealth

  16. Excited-State Relaxation in PbSe Quantum Dots

    SciTech Connect (OSTI)

    An, J. M.; Califano, M.; Franceschetti, A.; Zunger, A.

    2008-01-01

    In solids the phonon-assisted, nonradiative decay from high-energy electronic excited states to low-energy electronic excited states is picosecond fast. It was hoped that electron and hole relaxation could be slowed down in quantum dots, due to the unavailability of phonons energy matched to the large energy-level spacings ('phonon-bottleneck'). However, excited-state relaxation was observed to be rather fast ({le}1 ps) in InP, CdSe, and ZnO dots, and explained by an efficient Auger mechanism, whereby the excess energy of electrons is nonradiatively transferred to holes, which can then rapidly decay by phonon emission, by virtue of the densely spaced valence-band levels. The recent emergence of PbSe as a novel quantum-dot material has rekindled the hope for a slow down of excited-state relaxation because hole relaxation was deemed to be ineffective on account of the widely spaced hole levels. The assumption of sparse hole energy levels in PbSe was based on an effective-mass argument based on the light effective mass of the hole. Surprisingly, fast intraband relaxation times of 1-7 ps were observed in PbSe quantum dots and have been considered contradictory with the Auger cooling mechanism because of the assumed sparsity of the hole energy levels. Our pseudopotential calculations, however, do not support the scenario of sparse hole levels in PbSe: Because of the existence of three valence-band maxima in the bulk PbSe band structure, hole energy levels are densely spaced, in contradiction with simple effective-mass models. The remaining question is whether the Auger decay channel is sufficiently fast to account for the fast intraband relaxation. Using the atomistic pseudopotential wave functions of Pb{sub 2046}Se{sub 2117} and Pb{sub 260}Se{sub 249} quantum dots, we explicitly calculated the electron-hole Coulomb integrals and the P {yields} S electron Auger relaxation rate. We find that the Auger mechanism can explain the experimentally observed P {yields} S intraband decay time scale without the need to invoke any exotic relaxation mechanisms.

  17. The solubility of selenate-AFt (3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSeO{sub 4}{center_dot}37.5H{sub 2}O) and selenate-AFm (3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaSeO{sub 4}{center_dot}xH{sub 2}O)

    SciTech Connect (OSTI)

    Baur, Isabel; Johnson, C. Annette

    2003-11-01

    The Se(VI)-analogues of ettringite and monosulfate, selenate-AFt (3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSeO{sub 4}{center_dot}37.5H{sub 2}O), and selenate-AFm (3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaSeO{sub 4}{center_dot}xH{sub 2}O) were synthesised and characterised by bulk chemical analysis and X-ray diffraction. Their solubility products were determined from a series of batch and resuspension experiments conducted at 25 deg. C. For selenate-AFt suspensions, the pH varied between 11.37 and 11.61, and a solubility product, log K{sub so}=61.29{+-}0.60 (I=0 M), was determined for the reaction 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSeO{sub 4}{center_dot}37.5H{sub 2}O+12 H{sup +} implies 6Ca{sup 2+}+2Al{sup 3+}+3SeO{sub 4}{sup 2-}+43.5H{sub 2}O. Selenate-AFm synthesis resulted in the uptake of Na, which was leached during equilibration and resuspension. For the pH range of 11.75 to 11.90, a solubility product, log K{sub so}=73.40{+-}0.22 (I=0 M), was determined for the reaction 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaSeO{sub 4}{center_dot}xH{sub 2}O+12 H{sup +} implies 4Ca{sup 2+}+2Al{sup 3+}+SeO{sub 4}{sup 2-}+(x+6)H{sub 2}O. Thermodynamic modelling suggested that both selenate-AFt and selenate-AFm are stable in the cementitious matrix; and that in a cement limited in sulfate, selenate concentration may be limited by selenate-AFm to below the millimolar range above pH 12.

  18. Mr. Harry S. Cohen

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and MyersHr.EvaluationJune~of theOfll s' :y 1:

  19. TO : W. B. Harris

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and700, 1. .&. ' , c 1 1; -.ll 1q 3Pages: R./:'

  20. Dear Mr. Harris,

    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 Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 20153Daniel Boff Aboutof Energy DeadlineEM SSAB31,1,

  1. Grazing-incidence small-angle X-ray scattering: application to the study of quantum dot lattices

    SciTech Connect (OSTI)

    Buljan, Maja Radi?, Nikola; Bernstorff, Sigrid; Draži?, Goran; Bogdanovi?-Radovi?, Iva; Holý, Václav

    2012-01-01

    The modelling of grazing-incidence small-angle X-ray scattering (GISAXS) from three-dimensional quantum dot lattices is described. The ordering of quantum dots in three-dimensional quantum dot lattices is investigated by grazing-incidence small-angle X-ray scattering (GISAXS). Theoretical models describing GISAXS intensity distributions for three general classes of lattices of quantum dots are proposed. The classes differ in the type of disorder of the positions of the quantum dots. The models enable full structure determination, including lattice type, lattice parameters, the type and degree of disorder in the quantum dot positions and the distributions of the quantum dot sizes. Applications of the developed models are demonstrated using experimentally measured data from several types of quantum dot lattices formed by a self-assembly process.

  2. GeSi intermixing in Ge quantum dots on Si,,001... and Si,,111... F. Boscherinia)

    E-Print Network [OSTI]

    Ge­Si intermixing in Ge quantum dots on Si,,001... and Si,,111... F. Boscherinia) Laboratori December 1999 Exploiting Ge K-edge x-ray absorption spectroscopy we provide direct evidence of Si­Ge intermixing in self-organized strained and unstrained Ge quantum dots on Si, and provide a quantitative

  3. Infrared and photoluminescence spectroscopy of p-doped self-assembled Ge dots on Si

    E-Print Network [OSTI]

    Rokhinson, Leonid

    Infrared and photoluminescence spectroscopy of p-doped self-assembled Ge dots on Si L. P and photoluminescence PL spectroscopy of self-assembled Ge dots grown on Si 100 by molecular beam epitaxy. PL spectra show a transition from two- to three-dimensional growth as the Ge thickness exceeds 7 Å. The sum

  4. Shot-Noise Detection in a Carbon Nanotube Quantum Dot E. Onac,1,* F. Balestro,1,

    E-Print Network [OSTI]

    Shot-Noise Detection in a Carbon Nanotube Quantum Dot E. Onac,1,* F. Balestro,1, B. Trauzettel,1-chip detection scheme for high frequency signals is used to detect noise generated by a quantum dot formed in a single wall carbon nanotube. The noise detection is based on photon assisted tunneling

  5. Fate of Spin Doublets in Quantum Dot with Many Interacting Electrons. M. Brodsky1

    E-Print Network [OSTI]

    Finkelstein, Gleb

    Fate of Spin Doublets in Quantum Dot with Many Interacting Electrons. M. Brodsky1 , G. Finkelstein1 Abstract: Using the Single Electron Capacitance Spectroscopy, we study the energies required to add electrons to a quantum dot in a broad range of electron occupancy N. Following evolution of these energies

  6. Probing the size and environment induced phase transformation in CdSe quantum dots

    SciTech Connect (OSTI)

    Karakoti, Ajay S.; Sanghavi, Shail P.; Nachimuthu, Ponnusamy; Yang, Ping; Thevuthasan, Suntharampillai

    2011-11-17

    The structural and electronic properties of CdSe quantum dots in toluene and drop-casted on Si wafer were investigated by in-situ micro X-ray diffraction, X-ray photoelectron spectroscopy and UV-Vis absorption and emission spectroscopy. The in-situ micro diffraction data show that the CdSe quantum dots capped with TOPO or hexadecylamine (HDA) in toluene exhibit predominantly wurtzite crystal structure, which undergoes a phase transformation to zinc blende crystal structure following drop casting on Si and this phase transition increases with decreasing the size of the CdSe quantum dots. Decreasing the size of quantum dots also increases the Se vacancies that facilitate the phase transformation. The X-ray photoelectron spectra show a systematic increase in the core level binding energies of Cd 3d and Se 3d, the band gap and the Cd/Se ratio as the size of the quantum dots decreases from 6.6nm to 2.1nm. This is attributed to the quantum confinement of CdSe crystallites by the capping ligands in toluene which increases with decreasing the size of the quantum dots. However, drop-casting quantum dots on Si alter the density and arrangement of capping ligands and solvent molecules on the quantum dots which causes significant phase transformation.

  7. Energy Development Impacts on State Roadways: A Review of DOT Policies, Programs

    E-Print Network [OSTI]

    Energy Development Impacts on State Roadways: A Review of DOT Policies, Programs and Practices across Eight States Final Report PRC 14-29 F #12;2 Energy Development Impacts on State Roadways: A Review of DOT Policies, Programs and Practices across Eight States Texas A&M Transportation Institute PRC 14

  8. An environmental impact assessment of quantum dot photovoltaics (QDPV) from raw material acquisition through use

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    of cumulative energy supply (Michaels, 2008). The demand for solar energy has enabled the funding of research: Life cycle assessment Quantum dots Nanophotovoltaics Quantum dot photovoltaic modules Solar energy to overcome two current barriers of solar technology: low efficiencies and high manufacturing costs. If higher

  9. Experimental demonstration of clocked single-electron switching in quantum-dot cellular automata

    E-Print Network [OSTI]

    Orlov, Alexei

    tunnel junctions where the location of an excess electron is defined by electrostatic potentials on gates, the electrons remain trapped on the dots regardless of the state of the input signal. Although semiconductorExperimental demonstration of clocked single-electron switching in quantum-dot cellular automata

  10. Photovoltaic quantum dot quantum cascade infrared photodetector A. V. Barve and S. Krishna

    E-Print Network [OSTI]

    Krishna, Sanjay

    Photovoltaic quantum dot quantum cascade infrared photodetector A. V. Barve and S. Krishna Citation subject to AIP license or copyright; see http://apl.aip.org/about/rights_and_permissions #12;Photovoltaic) Design and characterization of a quantum dot quantum cascade detector for photovoltaic midwave infrared

  11. Statistical theory of Coulomb blockade oscillations: Quantum chaos in quantum dots

    SciTech Connect (OSTI)

    Jalabert, R.A.; Stone, A.D.; Alhassid, Y. (Center for Theoretical Physics, Sloane Physics Laboratory, Yale University, New Haven, Connecticut 06511 (United States))

    1992-06-08

    We develop a statistical theory of the amplitude of Coulomb blockade oscillations in semiconductor quantum dots based on the hypothesis that chaotic dynamics in the dot potential leads to behavior described by random-matrix theory. Breaking time-reversal symmetry is predicted to cause an experimentally observable change in the distribution of amplitudes. The theory is tested numerically and good agreement is found.

  12. Uptake, Translocation, and Transformation of Quantum Dots with Cationic versus Anionic Coatings by Populus deltoides nigra

    E-Print Network [OSTI]

    Alvarez, Pedro J.

    Uptake, Translocation, and Transformation of Quantum Dots with Cationic versus Anionic Coatings Supporting Information ABSTRACT: Manipulation of the organic coatings of nano- particles such as quantum dotsSe/CdZnS QDs coated with cationic polyethylenimine (PEI) (35.3 ± 6.6 nm) or poly(ethylene glycol) of anionic

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

    E-Print Network [OSTI]

    Cao, Guozhong

    , suffer from high cost of manufacturing and installation. Now the focus is on next generation solar cellsA 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

  14. Hierarchically Structured ZnO Nanorods-Nanosheets for Improved Quantum-Dot-Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    Hierarchically Structured ZnO Nanorods-Nanosheets for Improved Quantum-Dot-Sensitized Solar Cells NR-NS photoelectrode for constructing CdS/ CdSe quantum-dot-sensitized solar cells (QDSCs). This hierarchical structure had two advantages in improving the power conversion efficiency (PCE) of the solar cells

  15. Are you shipping a DOT Hazardous Material? Is your material listed

    E-Print Network [OSTI]

    Pawlowski, Wojtek

    Are you shipping a DOT Hazardous Material? Is your material listed on the DOT Hazmat Table? http://www.myregs.com/dotrspa/ (select Hazmat Table upper left) Your material is a Hazardous Material and must be shipped following the full regulations. Follow the instructions on the linked page, select the hazard of the material

  16. Hybrid mode-locking in a 40 GHz monolithic quantum dot laser G. Fiol,1,a

    E-Print Network [OSTI]

    Vladimirov, Andrei G.

    Hybrid mode-locking in a 40 GHz monolithic quantum dot laser G. Fiol,1,a D. Arsenijevi,1 D. Bimberg; accepted 30 November 2009; published online 5 January 2010 Hybrid mode-locking in monolithic quantum dot QD of hybrid mode-locking ML , a commonly used technique for improving quality of mode- locked pulses

  17. Light extraction analysis and enhancement in a quantum dot light emitting diode

    E-Print Network [OSTI]

    Wu, Shin-Tson

    Light extraction analysis and enhancement in a quantum dot light emitting diode Ruidong Zhu outcoupling and angular performance of quantum dot light emitting diode (QLED). To illustrate the design principles, we use a red QLED as an example and compare its performance with an organic light emitting diode

  18. Prediction of a strain-induced conduction-band minimum in embedded quantum dots

    SciTech Connect (OSTI)

    Williamson, A.J.; Zunger, A.; Canning, A.

    1998-02-01

    Free-standing InP quantum dots have previously been theoretically and experimentally shown to have a direct band gap across a large range of experimentally accessible sizes. We demonstrated that when these dots are embedded coherently within a GaP barrier material, the effects of quantum confinement in conjunction with coherent strain suggest there will be a critical diameter of dot ({approx}60 {Angstrom}), above which the dot is direct, type I, and below which it is indirect, type II. However, the strain in the system acts to produce another conduction state with an even lower energy, in which electrons are localized in small pockets at the interface between the InP dot and the GaP barrier. Since this conduction state is GaP X{sub 1c} derived and the highest occupied valence state is InP, {Gamma} derived, the fundamental transition is predicted to be indirect in both real and reciprocal space ({open_quotes}type II{close_quotes}) for all dot sizes. This effect is peculiar to the strained dot, and is absent in the freestanding dot. {copyright} {ital 1998} {ital The American Physical Society}

  19. Coulomb Oscillations and Hall Effect in Quasi-2D Graphite Quantum Dots

    E-Print Network [OSTI]

    McEuen, Paul L.

    Coulomb Oscillations and Hall Effect in Quasi-2D Graphite Quantum Dots J. Scott Bunch, Yuval Yaish-temperature electrical transport measurements on gated, quasi-2D graphite quantum dots. In devices with low contact of graphene, a zero band gap semiconductor with two linearly dispersing bands that touch at the corners

  20. Perovskite Quantum Dots Modeled Using ab Initio and Replica Exchange Molecular Dynamics

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    Perovskite Quantum Dots Modeled Using ab Initio and Replica Exchange Molecular Dynamics Andrei Buin halide perovskites have recently attracted tremen- dous attention at both the experimental. Here we investigate perovskite quantum dots from theory, predicting an upper bound of the Bohr radius

  1. Growth of a single freestanding multiwall carbon nanotube on each nanonickel dot

    E-Print Network [OSTI]

    Reed, Mark

    nanotube s on submicron nickel dot s on silicon has been achieved by plasma that the structures are indeed hollow nanotubes. The diameter and height depend on the nickel dot size and growth time aligned carbon nanotubes has been dem- onstrated on glass,10 on nickel,11 and on silicon.12,13 Here we

  2. Atomic force microscopy of nickel dot arrays with tuning fork and nanotube probe

    E-Print Network [OSTI]

    Chandrasekhar, Venkat

    Atomic force microscopy of nickel dot arrays with tuning fork and nanotube probe S. Rozhok,a) S microscopy are combined with the unique properties of carbon nanotubes to improve the spatial resolution of atomic force microscopy AFM images of nickel dot arrays. These arrays have high relief features

  3. Nuclear spin relaxation probed by a single quantum dot A. K. Huttel,1

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Nuclear spin relaxation probed by a single quantum dot A. K. Hu¨ttel,1 J. Weber,1 A. W. Holleitner February 2004 We present measurements on nuclear spin relaxation probed by a single quantum dot formed the electronic to the nuclear spin system. Applying electron spin resonance, the transfer mechanism is suppressed

  4. Depleted-heterojunction colloidal quantum dot photovoltaics employing low-cost electrical contacts

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    solution-processed single-junction cells and also multijunction architectures.1 Size-effect tuning also of depleted-heterojunction colloidal quantum dot solar cells, we describe herein a strategy that replaces energy conver- sion. Recently, colloidal quantum dot CQD solar cells were reported that reached above 5

  5. GaSb/GaAs type II quantum dot solar cells for enhanced infrared spectral response

    E-Print Network [OSTI]

    Jalali. Bahram

    into existing multijunction cells either as a means to increase the current or efficiency by using low band gapGaSb/GaAs type II quantum dot solar cells for enhanced infrared spectral response R. B infrared spectral response of GaAs-based solar cells that incorporate type II GaSb quantum dots QDs formed

  6. Control of Nanostructures and Interfaces of Metal Oxide Semiconductors for Quantum-Dots-Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    for the solar cells, solar fuel, photo catalyst, and energy storage devices due to their excellent photoelectric-Dots-Sensitized Solar Cells Jianjun Tian, and Guozhong Cao*,,§ Beijing Institute of Nanoenergy and Nanosystems, Chinese for the quantum dots sensitized solar cells (QDSCs), owing to their large specific surface area for loading

  7. Mechanism for thermoelectric figure-of-merit enhancement in regimented quantum dot superlattices

    E-Print Network [OSTI]

    Mechanism for thermoelectric figure-of-merit enhancement in regimented quantum dot superlattices propose a mechanism for enhancement of the thermoelectric figure-of-merit in regimented quantum dot, as a result, to the thermoelectric figure-of-merit enhancement. To maximize the improvement, one has to tune

  8. Physica E 35 (2006) 278284 Spectroscopy of molecular states in a few-electron double quantum dot

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    2006-01-01

    . In particular, the tunnel splitting of the double well potential for up to one trapped electron is unambiguously the trapping potential of a single quantum dot, a strongly tunnel-coupled double quantum dot can be defined reserved. PACS: 73.21.La; 73.23.Hk; 73.20.Jc Keywords: Double quantum dot; Single electron tunneling

  9. Counting statistics of coherent population trapping in quantum dots C. W. Groth, B. Michaelis, and C. W. J. Beenakker

    E-Print Network [OSTI]

    tunneling between three quantum dots can trap an electron in a coherent superposition of charge on two, is based on destructive interference of single-electron tunnel- ing between three quantum dots see Fig. 1 . The trapped state is a coherent superposition of the electronic charge in two of these quantum dots, so

  10. Dynamic Nuclear Spin Polarization in the Resonant Laser Excitation of an InGaAs Quantum Dot

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Dynamic Nuclear Spin Polarization in the Resonant Laser Excitation of an InGaAs Quantum Dot A. Ho transitions in self-assembled quantum dots leads to nuclear spin polarization that is qualitatively different, we demonstrate that nuclear spin polarization manifests itself in quantum dots subjected to finite

  11. Water-soluble luminescent quantum dots and biomolecular conjugates thereof and related compositions and methods of use

    DOE Patents [OSTI]

    Nie, Shuming; Chan, Warren C. W.; Emory, Stephen

    2007-03-20

    The present invention provides a water-soluble luminescent quantum dot, a biomolecular conjugate thereof and a composition comprising such a quantum dot or conjugate. Additionally, the present invention provides a method of obtaining a luminescent quantum dot, a method of making a biomolecular conjugate thereof, and methods of using a biomolecular conjugate for ultrasensitive nonisotopic detection in vitro and in vivo.

  12. Quasiresonant excitation of InP/InGaP quantum dots using second harmonic generated in a photonic crystal cavity

    E-Print Network [OSTI]

    Vuckovic, Jelena

    Quasiresonant excitation of InP/InGaP quantum dots using second harmonic generated in a photonic://apl.aip.org/about/rights_and_permissions #12;Quasiresonant excitation of InP/InGaP quantum dots using second harmonic generated in a photonic applications. Resonant or quasiresonant excitation of single quantum dots provides greater single photon

  13. Water-soluble luminescent quantum dots and biomolecular conjugates thereof and related compositions and method of use

    DOE Patents [OSTI]

    Nie, Shuming (Bloomington, IN); Chan, Warren C. W. (Bloomington, IN); Emory, Steven R. (Los Alamos, NM)

    2002-01-01

    The present invention provides a water-soluble luminescent quantum dot, a biomolecular conjugate thereof and a composition comprising such a quantum dot or conjugate. Additionally, the present invention provides a method of obtaining a luminescent quantum dot, a method of making a biomolecular conjugate thereof, and methods of using a biomolecular conjugate for ultrasensitive nonisotopic detection in vitro and in vivo.

  14. Nonequilibrium stabilization of charge states in double quantum dots

    E-Print Network [OSTI]

    Udo Hartmann; Frank K. Wilhelm

    2004-04-29

    We analyze the decoherence of charge states in double quantum dots due to cotunneling. The system is treated using the Bloch-Redfield generalized master equation for the Schrieffer-Wolff transformed Hamiltonian. We show that the decoherence, characterized through a relaxation $\\tau_{r}$ and a dephasing time $\\tau_{\\phi}$, can be controlled through the external voltage and that the optimum point, where these times are maximum, is not necessarily in equilibrium. We outline the mechanism of this nonequilibrium-induced enhancement of lifetime and coherence. We discuss the relevance of our results for recent charge qubit experiments.

  15. Activation of molecular catalysts using semiconductor quantum dots

    DOE Patents [OSTI]

    Meyer, Thomas J. (Chapel Hill, NC); Sykora, Milan (Los Alamos, NM); Klimov, Victor I. (Los Alamos, NM)

    2011-10-04

    Photocatalytic materials based on coupling of semiconductor nanocrystalline quantum dots (NQD) and molecular catalysts. These materials have capability to drive or catalyze non-spontaneous chemical reactions in the presence of visible radiation, ultraviolet radiation, or both. The NQD functions in these materials as a light absorber and charge generator. Following light absorption, the NQD activates a molecular catalyst adsorbed on the surface of the NQD via transfer of one or more charges (either electrons or electron-holes) from the NQD to the molecular catalyst. The activated molecular catalyst can then drive a chemical reaction. A photoelectrolytic device that includes such photocatalytic materials is also described.

  16. Thermal transport through non-ideal Andreev quantum dots

    E-Print Network [OSTI]

    Pedro Vidal

    2015-01-07

    We consider the scenario of thermal transport through two types of Andreev quantum dots which are coupled to two leads, belonging to the Class D and Class C symmetry classes. Using the random matrix description we derive the joint probability density function (j.p.d.f.) in term of Hypergeometric Function of Matrix Arguments when we consider one lead to be attached ideally and one lead non ideally. For the class C ensemble we derive a more explicit representation of the j.p.d.f. which results in a new type of random matrix model.

  17. The dosimetric consequences of the new DOT LSA definition

    SciTech Connect (OSTI)

    Mis, F.J.

    1996-10-01

    As a result of the new regulations for the transportation of radioactive materials, the DOT and the NRC have implemented a rule designed to limit the activity in an LSA container. This is a new regulation designed to insure that the spirit of the law as well as the letter of the law are followed for LSA shipments. Specifically, it limits the dose rate at any location on an unshielded LSA container to less than 1 rem/hr at 3 meters. Other possible alternatives had been discussed prior to the implementation of this regulation including multiples of A{sub 2} values, as implemented by the French.

  18. Computational modeling of electrophotonics nanomaterials: Tunneling in double quantum dots

    SciTech Connect (OSTI)

    Vlahovic, Branislav Filikhin, Igor

    2014-10-06

    Single electron localization and tunneling in double quantum dots (DQD) and rings (DQR) and in particular the localized-delocalized states and their spectral distributions are considered in dependence on the geometry of the DQDs (DQRs). The effect of violation of symmetry of DQDs geometry on the tunneling is studied in details. The cases of regular and chaotic geometries are considered. It will be shown that a small violation of symmetry drastically affects localization of electron and that anti-crossing of the levels is the mechanism of tunneling between the localized and delocalized states in DQRs.

  19. Photoluminescence-enhanced biocompatible quantum dots by phospholipid functionalization

    SciTech Connect (OSTI)

    Shi Yunfeng; He Peng Zhu Xinyuan

    2008-10-02

    A simple two-step strategy using phospholipid (PPL) to functionalize core/shell CdSe/ZnS quantum dots (QDs) has been described. The experimental data show that the use of S-H terminated PPL results not only in the high colloidal stability of core/shell CdSe/ZnS QDs in the aqueous phase, but also in the significant enhancement of photoluminescence. The degree of the enhancement is a function of the PPL-CdSe/ZnS QDs sample concentration. These results might be promising for future biological platform in new devices ranging from photovoltaic cells to biosensors and other devices.

  20. Photocurrent extraction efficiency in colloidal quantum dot photovoltaics

    SciTech Connect (OSTI)

    Kemp, K. W.; Wong, C. T. O.; Hoogland, S. H.; Sargent, E. H.

    2013-11-18

    The efficiency of photocurrent extraction was studied directly inside operating Colloidal Quantum Dot (CQD) photovoltaic devices. A model was derived from first principles for a thin film p-n junction with a linearly spatially dependent electric field. Using this model, we were able to clarify the origins of recent improvement in CQD solar cell performance. From current-voltage diode characteristics under 1 sun conditions, we extracted transport lengths ranging from 39 nm to 86 nm for these materials. Characterization of the intensity dependence of photocurrent extraction revealed that the dominant loss mechanism limiting the transport length is trap-mediated recombination.

  1. Solid-state photonic interfaces using semiconductor quantum dots

    E-Print Network [OSTI]

    Boyer de la Giroday, Antoine

    2012-02-07

    . Rev. Lett. 106, 216802 (2011) 5. Coherent entangled light generated by quantum dots in the presence of nuclear magnetic fields R.M. Stevenson, C.L. Salter, A. Boyer de la Giroday, I. Farrer, C.A. Nicoll, D.A. Ritchie, and A.J. Shields arXiv:1103.2969v1... Bragg reflectors (DBRs) surround- ing the cavity region made of a GaAs spacer layer containing the QDs. Each DBR consists of alternating layers of high- and low-refractive index materi- als (respectively GaAs with n = 3.54 and AlAs n = 2.97 in our case...

  2. Charge-transfer dynamics in multilayered PbS and PbSe quantum dot architectures

    SciTech Connect (OSTI)

    Xu, F.; Ma, X.; Haughn, C. R.; Doty, M. F.; Cloutier, S. G.

    2014-02-03

    We demonstrate control of the charge transfer process in PbS and PbSe quantum dot assemblies. We first demonstrate efficient charge transfer from donor quantum dots to acceptor quantum dots in a multi-layer PbSe cascade structure. Then, we assemble type-I and type-II heterostructures using both PbS and PbSe quantum dots via careful control of the band alignment. In type-I structures, photo-generated carriers are transferred and localized in the smaller bandgap (acceptor) quantum dots, resulting in a significant luminescence enhancement. In contrast, a significant luminescence quenching and shorter emission lifetime confirms an efficient separation of photo-generated carriers in the type-II architecture.

  3. Intermediate-band photosensitive device with quantum dots embedded in energy fence barrier

    DOE Patents [OSTI]

    Forrest, Stephen R. (Ann Arbor, MI); Wei, Guodan (Ann Arbor, MI)

    2010-07-06

    A plurality of layers of a first semiconductor material and a plurality of dots-in-a-fence barriers disposed in a stack between a first electrode and a second electrode. Each dots-in-a-fence barrier consists essentially of a plurality of quantum dots of a second semiconductor material embedded between and in direct contact with two layers of a third semiconductor material. Wave functions of the quantum dots overlap as at least one intermediate band. The layers of the third semiconductor material are arranged as tunneling barriers to require a first electron and/or a first hole in a layer of the first material to perform quantum mechanical tunneling to reach the second material within a respective quantum dot, and to require a second electron and/or a second hole in a layer of the first semiconductor material to perform quantum mechanical tunneling to reach another layer of the first semiconductor material.

  4. Induced spin-accumulation and spin-polarization in a quantum-dot ring by using magnetic quantum dots and Rashba spin-orbit effect

    SciTech Connect (OSTI)

    Eslami, L., E-mail: Leslami@iust.ac.ir; Faizabadi, E. [School of Physics, Iran University of Science and Technology, Tehran 16846 (Iran, Islamic Republic of)

    2014-05-28

    The effect of magnetic contacts on spin-dependent electron transport and spin-accumulation in a quantum ring, which is threaded by a magnetic flux, is studied. The quantum ring is made up of four quantum dots, where two of them possess magnetic structure and other ones are subjected to the Rashba spin-orbit coupling. The magnetic quantum dots, referred to as magnetic quantum contacts, are connected to two external leads. Two different configurations of magnetic moments of the quantum contacts are considered; the parallel and the anti-parallel ones. When the magnetic moments are parallel, the degeneracy between the transmission coefficients of spin-up and spin-down electrons is lifted and the system can be adjusted to operate as a spin-filter. In addition, the accumulation of spin-up and spin-down electrons in non-magnetic quantum dots are different in the case of parallel magnetic moments. When the intra-dot Coulomb interaction is taken into account, we find that the electron interactions participate in separation between the accumulations of electrons with different spin directions in non-magnetic quantum dots. Furthermore, the spin-accumulation in non-magnetic quantum dots can be tuned in the both parallel and anti-parallel magnetic moments by adjusting the Rashba spin-orbit strength and the magnetic flux. Thus, the quantum ring with magnetic quantum contacts could be utilized to create tunable local magnetic moments which can be used in designing optimized nanodevices.

  5. Colloidal quantum dot solar cells on curved and flexible substrates

    SciTech Connect (OSTI)

    Kramer, Illan J.; Moreno-Bautista, Gabriel; Minor, James C.; Kopilovic, Damir; Sargent, Edward H.

    2014-10-20

    Colloidal quantum dots (CQDs) are semiconductor nanocrystals synthesized with, processed in, and deposited from the solution phase, potentially enabling low-cost, facile manufacture of solar cells. Unfortunately, CQD solar cell reports, until now, have only explored batch-processing methods—such as spin-coating—that offer limited capacity for scaling. Spray-coating could offer a means of producing uniform colloidal quantum dot films that yield high-quality devices. Here, we explore the versatility of the spray-coating method by producing CQD solar cells in a variety of previously unexplored substrate arrangements. The potential transferability of the spray-coating method to a roll-to-roll manufacturing process was tested by spray-coating the CQD active layer onto six substrates mounted on a rapidly rotating drum, yielding devices with an average power conversion efficiency of 6.7%. We further tested the manufacturability of the process by endeavoring to spray onto flexible substrates, only to find that spraying while the substrate was flexed was crucial to achieving champion performance of 7.2% without compromise to open-circuit voltage. Having deposited onto a substrate with one axis of curvature, we then built our CQD solar cells onto a spherical lens substrate having two axes of curvature resulting in a 5% efficient device. These results show that CQDs deposited using our spraying method can be integrated to large-area manufacturing processes and can be used to make solar cells on unconventional shapes.

  6. Effect of swift heavy ion irradiation on bare and coated ZnS quantum dots

    SciTech Connect (OSTI)

    Chowdhury, S. Hussain, A.M.P.; Ahmed, G.A.; Singh, F.; Avasthi, D.K.; Choudhury, A.

    2008-12-01

    The present study compares structural and optical modifications of bare and silica (SiO{sub 2}) coated ZnS quantum dots under swift heavy ion (SHI) irradiation. Bare and silica coated ZnS quantum dots were prepared following an inexpensive chemical route using polyvinyl alcohol (PVA) as the dielectric host matrix. X-ray diffraction (XRD) and transmission electron microscopy (TEM) study of the samples show the formation of almost spherical ZnS quantum dots. The UV-Vis absorption spectra reveal blue shift relative to bulk material in absorption energy while photoluminescence (PL) spectra suggests that surface state and near band edge emissions are dominating in case of bare and coated samples, respectively. Swift heavy ion irradiation of the samples was carried out with 160 MeV Ni{sup 12+} ion beam with fluences 10{sup 12} to 10{sup 13} ions/cm{sup 2}. Size enhancement of bare quantum dots after irradiation has been indicated in XRD and TEM analysis of the samples which has also been supported by optical absorption spectra. However similar investigations on irradiated coated quantum dots revealed little change in quantum dot size and emission. The present study thus shows that the coated ZnS quantum dots are stable upon SHI irradiation compared to the bare one.

  7. Tuning the properties of Ge-quantum dots superlattices in amorphous silica matrix through deposition conditions

    SciTech Connect (OSTI)

    Pinto, S. R. C.; Ramos, M. M. D.; Gomes, M. J. M.; Buljan, M.; Chahboun, A.; Roldan, M. A.; Molina, S. I.; Bernstorff, S.; Varela, M.; Pennycook, S. J.; Barradas, N. P.; Alves, E.

    2012-04-01

    In this work, we investigate the structural properties of Ge quantum dot lattices in amorphous silica matrix, prepared by low-temperature magnetron sputtering deposition of (Ge+SiO{sub 2})/SiO{sub 2} multilayers. The dependence of quantum dot shape, size, separation, and arrangement type on the Ge-rich (Ge + SiO{sub 2}) layer thickness is studied. We show that the quantum dots are elongated along the growth direction, perpendicular to the multilayer surface. The size of the quantum dots and their separation along the growth direction can be tuned by changing the Ge-rich layer thickness. The average value of the quantum dots size along the lateral (in-plane) direction along with their lateral separation is not affected by the thickness of the Ge-rich layer. However, the thickness of the Ge-rich layer significantly affects the quantum dot ordering. In addition, we investigate the dependence of the multilayer average atomic composition and also the quantum dot crystalline quality on the deposition parameters.

  8. Observations of Rabi oscillations in a non-polar InGaN quantum dot

    E-Print Network [OSTI]

    Reid, Benjamin P. L.; Kocher, Claudius; Zhu, Tongtong; Oehler, Fabrice; Emery, Robert; Chan, Christopher C. S.; Oliver, Rachel A.; Taylor, Robert A.

    2014-07-03

    . A pattern of such apertures was sufficient to enable optical isolation of single quantum dots. The samples were mounted in a continuous helium flow cryostat (Janis ST-500) with a feedback loop temperature controller (Lakeshore 331) enabling cooling... to sustain excitonic emission at high temperatures, evidenced by single photon emission at 200K from InGaN [8] and at 300K from GaN quantum dots [9]. Demonstration of coherent control of quantum dot qubit states in the III-nitride system has been hampered...

  9. Far off-resonant coupling between photonic crystal microcavity and single quantum dot with resonant excitation

    SciTech Connect (OSTI)

    Banihashemi, Mehdi; Ahmadi, Vahid, E-mail: v-ahmadi@modares.ac.ir [Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, P.O. Box 14115-194 (Iran, Islamic Republic of)] [Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, P.O. Box 14115-194 (Iran, Islamic Republic of); Nakamura, Tatsuya; Kojima, Takanori; Kojima, Kazunobu; Noda, Susumu [Department of Electronic Science and Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)] [Department of Electronic Science and Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)

    2013-12-16

    In this paper, we experimentally demonstrate that with sub-nanowatt coherent s-shell excitation of a single InAs quantum dot, off-resonant coupling of 4.1?nm is possible between L3 photonic crystal microcavity and the quantum dot at 50?K. This resonant excitation reduces strongly the effect of surrounding charges to quantum dot, multiexciton complexes and pure dephasing. It seems that this far off-resonant coupling is the result of increased number of acoustical phonons due to high operating temperature of 50?K. The 4.1?nm detuning is the largest amount for this kind of coupling.

  10. Red light-emitting diodes based on InP/GaP quantum dots

    SciTech Connect (OSTI)

    Hatami, F.; Lordi, V.; Harris, J.S.; Kostial, H.; Masselink, W.T.

    2005-05-01

    The growth, fabrication, and device characterization of InP quantum-dot light-emitting diodes based on GaP are described and discussed. The diode structures are grown on gallium phosphide substrates using gas-source molecular-beam epitaxy and the active region of the diode consists of self-assembled InP quantum dots embedded in a GaP matrix. Red electroluminescence originating from direct band-gap emission from the InP quantum dots is observed at low temperatures.With increasing temperature, however, the emission line shifts to the longer wavelength. The emission light is measured to above room temperature.

  11. Whispering gallery modes in quantum dot-embedded dielectric microspheres for tagless remote refractometric sensing 

    E-Print Network [OSTI]

    Pang, Shuo

    2008-10-10

    coating. The CdSe/Zns core/shell quantum dots are prepared colloidally via organometallic synthesis. In these experiments, green quantum dots with an emission peak at 530nm are used. The absorption and emission spectra are shown in Figure 9. 23... stream_source_info Shuo.pdf.txt stream_content_type text/plain stream_size 66833 Content-Encoding UTF-8 stream_name Shuo.pdf.txt Content-Type text/plain; charset=UTF-8 WHISPERING GALLERY MODES IN QUANTUM DOT...

  12. The use of bulk states to accelerate the band edge statecalculation of a semiconductor quantum dot

    SciTech Connect (OSTI)

    Vomel, Christof; Tomov, Stanimire Z.; Wang, Lin-Wang; Marques,Osni A.; Dongarra, Jack J.

    2006-05-10

    We present a new technique to accelerate the convergence of the folded spectrum method in empirical pseudopotential band edge state calculations for colloidal quantum dots. We use bulk band states of the materials constituent of the quantum dot to construct initial vectors and a preconditioner. We apply these to accelerate the convergence of the folded spectrum method for the interior states at the top of the valence and the bottom of the conduction band. For large CdSe quantum dots, the number of iteration steps until convergence decreases by about a factor of 4 compared to previous calculations.

  13. Heralded entanglement of two distant quantum dot spins via optical interference

    E-Print Network [OSTI]

    Li-Bo Chen; Wen Yang; Zhang-Qi Yin

    2015-05-19

    We present a proposal for heralded entanglement between two quantum dots via Hong--Ou--Mandel effect. Each of the quantum dots, drived off-resonance by two lasers, can be entangled with the coherent cavity mode. The output photons from the two coherent cavity modes interfering by a beamsplitter, we could entangle the two QDs with nearly unit success probability. Our scheme requires neither direct coupling between qubits nor the detection of single photons. Moreover the quantum dots do not need to have the same frequencies and coupling constants.

  14. On-chip generation and guiding of quantum light from a site-controlled quantum dot

    SciTech Connect (OSTI)

    Jamil, Ayesha; Farrer, Ian; Griffiths, Jonathan P.; Jones, Geb A. C.; Ritchie, David A.; Skiba-Szymanska, Joanna; Kalliakos, Sokratis; Ward, Martin B.; Ellis, David J. P.; Shields, Andrew J.; Schwagmann, Andre; Brody, Yarden; Cambridge Research Laboratory, Toshiba Research Europe Limited, 208 Science Park, Milton Road, Cambridge, CB4 0GZ

    2014-03-10

    We demonstrate the emission and routing of single photons along a semiconductor chip originating from carrier recombination in an actively positioned InAs quantum dot. Device–scale arrays of quantum dots are formed by a two–step regrowth process. We precisely locate the propagating region of a unidirectional photonic crystal waveguide with respect to the quantum dot nucleation site. Under pulsed optical excitation, the multiphoton emission probability from the waveguide's exit is 12%?±?5% before any background correction. Our results are a major step towards the deterministic integration of a quantum emitter with the waveguiding components of photonic quantum circuits.

  15. Gate-Tunable Graphene Quantum Dot and Dirac Oscillator

    E-Print Network [OSTI]

    Abdelhadi Belouad; Ahmed Jellal; Youness Zahidi

    2015-05-29

    We obtain the solution of the Dirac equation in (2+1) dimensions in the presence of a constant magnetic field normal to the plane together with a two-dimensional Dirac-oscillator potential coupling. We study the energy spectrum of graphene quantum dot (QD) defined by electrostatic gates. We give discussions of our results based on different physical settings, whether the cyclotron frequency is similar or larger/smaller compared to the oscillator frequency. This defines an effective magnetic field that produces the effective quantized Landau levels. We study analytically such field in gate-tunable graphene QD and show that our structure allow us to control the valley degeneracy. Finally, we compare our results with already published work and also discuss the possible applications of such QD.

  16. Gate-Tunable Graphene Quantum Dot and Dirac Oscillator

    E-Print Network [OSTI]

    Belouad, Abdelhadi; Zahidi, Youness

    2015-01-01

    We obtain the solution of the Dirac equation in (2+1) dimensions in the presence of a constant magnetic field normal to the plane together with a two-dimensional Dirac-oscillator potential coupling. We study the energy spectrum of graphene quantum dot (QD) defined by electrostatic gates. We give discussions of our results based on different physical settings, whether the cyclotron frequency is similar or larger/smaller compared to the oscillator frequency. This defines an effective magnetic field that produces the effective quantized Landau levels. We study analytically such field in gate-tunable graphene QD and show that our structure allow us to control the valley degeneracy. Finally, we compare our results with already published work and also discuss the possible applications of such QD.

  17. Cooling a nanomechanical resonator by a triple quantum dot

    E-Print Network [OSTI]

    Li, Zeng-Zhao; Lam, Chi-Hang; You, J Q

    2012-01-01

    We propose an approach for achieving ground-state cooling of a nanomechanical resonator (NAMR) capacitively coupled to a triple quantum dot (TQD). This TQD is an electronic analog of a three-level atom in $\\Lambda$ configuration which allows an electron to enter it via lower-energy states and to exit only from a higher-energy state. By tuning the degeneracy of the two lower-energy states in the TQD, an electron can be trapped in a dark state caused by destructive quantum interference between the two tunneling pathways to the higher-energy state. Therefore, ground-state cooling of an NAMR can be achieved when electrons absorb readily and repeatedly energy quanta from the NAMR for excitations.

  18. Cooling a nanomechanical resonator by a triple quantum dot

    E-Print Network [OSTI]

    Zeng-Zhao Li; Shi-Hua Ouyang; Chi-Hang Lam; J. Q. You

    2012-05-26

    We propose an approach for achieving ground-state cooling of a nanomechanical resonator (NAMR) capacitively coupled to a triple quantum dot (TQD). This TQD is an electronic analog of a three-level atom in $\\Lambda$ configuration which allows an electron to enter it via lower-energy states and to exit only from a higher-energy state. By tuning the degeneracy of the two lower-energy states in the TQD, an electron can be trapped in a dark state caused by destructive quantum interference between the two tunneling pathways to the higher-energy state. Therefore, ground-state cooling of an NAMR can be achieved when electrons absorb readily and repeatedly energy quanta from the NAMR for excitations.

  19. Interaction of graphene quantum dots with bulk semiconductor surfaces

    SciTech Connect (OSTI)

    Mohapatra, P. K.; Singh, B. P.; Kushavah, Dushyant; Mohapatra, J.

    2015-05-15

    Highly luminescent graphene quantum dots (GQDs) are synthesized through thermolysis of glucose. The average lateral size of the synthesized GQDs is found to be ?5 nm. The occurrence of D and G band at 1345 and 1580 cm{sup ?1} in Raman spectrum confirms the presence of graphene layers. GQDs are mostly consisting of 3 to 4 graphene layers as confirmed from the AFM measurements. Photoluminescence (PL) measurement shows a distinct broadening of the spectrum when GQDs are on the semiconducting bulk surface compared to GQDs in water. The time resolved PL measurement shows a significant shortening in PL lifetime due to the substrate interaction on GQDs compared to the GQDs in solution phase.

  20. Numerical study of quasiparticle lifetime in quantum dots

    E-Print Network [OSTI]

    Alejandro M. F. Rivas; Eduardo R. Mucciolo; Alex Kamenev

    2001-09-25

    The decay rate of quasiparticles in quantum dots is studied through the real time calculation of the single-particle Green function in the self-consistent approximation. The method avoids exact diagonalization, transforming the problem into a system of coupled non-linear integral equations which may be solved iteratively. That allows us to study systems larger than previously treated in the literature. Our results for the inverse participation ratio of many-body states show that the threshold energy for the quasiparticle disintegration is $E^\\ast \\sim \\sqrt{g} \\Delta$. The delocalization transition is soft rather than sharp. Three different regimes as function of the effective interaction strength may be clearly identified at high energies.

  1. Valley pair qubits in double quantum dots of gapped graphene

    E-Print Network [OSTI]

    G. Y. Wu; N. -Y. Lue; L. Chang

    2011-07-03

    The rise of graphene opens a new door to qubit implementation, as discussed in the recent proposal of valley pair qubits in double quantum dots of gapped graphene (Wu et al., arXiv: 1104.0443 [cond-mat.mes-hall]). The work here presents the comprehensive theory underlying the proposal. It discusses the interaction of electrons with external magnetic and electric fields in such structures. Specifically, it examines a strong, unique mechanism, i.e., the analogue of the 1st-order relativistic effect in gapped graphene. This mechanism is state mixing free and allows, together with the electrically tunable exchange coupling, a fast, all-electric manipulation of qubits via electric gates, in the time scale of ns. The work also looks into the issue of fault tolerance in a typical case, yielding at 10oK a long qubit coherence time (~O(ms)).

  2. Soliton nanoantennas in two-dimensional arrays of quantum dots

    E-Print Network [OSTI]

    Gligori?, G; Hadžievski, Lj; Slepyan, G Ya; Malomed, B A

    2015-01-01

    We consider two-dimensional (2D) arrays of self-organized semiconductor quantum dots (QDs) strongly interacting with electromagnetic field in the regime of Rabi oscillations. The QD array built of two-level states is modelled by two coupled systems of discrete nonlinear Schr\\"{o}dinger equations. Localized modes in the form of single-peaked fundamental and vortical stationary Rabi solitons and self-trapped breathers have been found. The results for the stability, mobility and radiative properties of the Rabi modes suggest a concept of a self-assembled 2D \\textit{% soliton-based nano-antenna}, which should be stable against imperfections In particular, we discuss the implementation of such a nano-antenna in the form of surface plasmon solitons in graphene, and illustrate possibilities to control their operation by means of optical tools.

  3. Quantum Dot Solar Cells with Multiple Exciton Generation

    SciTech Connect (OSTI)

    Hanna, M. C.; Beard, M. C.; Johnson, J. C.; Murphy, J.; Ellingson, R. J.; Nozik, A. J.

    2005-11-01

    We have measured the quantum yield of the multiple exciton generation (MEG) process in quantum dots (QDs) of the lead-salt semiconductor family (PbSe, PbTe, and PbS) using fs pump-probe transient absorption measurements. Very high quantum yields (up to 300%) for charge carrier generation from MEG have been measured in all of the Pb-VI QDs. We have calculated the potential maximum performance of various MEG QD solar cells in the detailed balance limit. We examined a two-cell tandem PV device with singlet fission (SF), QD, and normal dye (N) absorbers in the nine possible series-connected combinations to compare the tandem combinations and identify the combinations with the highest theoretical efficiency. We also calculated the maximum efficiency of an idealized single-gap MEG QD solar cell with M multiplications and its performance under solar concentration.

  4. Location deterministic biosensing from quantum-dot-nanowire assemblies

    SciTech Connect (OSTI)

    Liu, Chao [Materials Science and Engineering Program, Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712 (United States); Kim, Kwanoh [Department of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712 (United States); Fan, D. L., E-mail: dfan@austin.utexas.edu [Materials Science and Engineering Program, Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712 (United States); Department of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712 (United States)

    2014-08-25

    Semiconductor quantum dots (QDs) with high fluorescent brightness, stability, and tunable sizes, have received considerable interest for imaging, sensing, and delivery of biomolecules. In this research, we demonstrate location deterministic biochemical detection from arrays of QD-nanowire hybrid assemblies. QDs with diameters less than 10?nm are manipulated and precisely positioned on the tips of the assembled Gold (Au) nanowires. The manipulation mechanisms are quantitatively understood as the synergetic effects of dielectrophoretic (DEP) and alternating current electroosmosis (ACEO) due to AC electric fields. The QD-nanowire hybrid sensors operate uniquely by concentrating bioanalytes to QDs on the tips of nanowires before detection, offering much enhanced efficiency and sensitivity, in addition to the position-predictable rationality. This research could result in advances in QD-based biomedical detection and inspires an innovative approach for fabricating various QD-based nanodevices.

  5. Quantum Dot Spin Cellular Automata for Realizing a Quantum Processor

    E-Print Network [OSTI]

    Abolfazl Bayat; Charles E. Creffield; John H. Jefferson; Michael Pepper; Sougato Bose

    2015-09-09

    We show how "single" quantum dots, each hosting a singlet-triplet qubit, can be placed in arrays to build a spin quantum cellular automaton. A fast ($\\sim 10$ ns) deterministic coherent singlet-triplet filtering, as opposed to current incoherent tunneling/slow-adiabatic based quantum gates (operation time $\\sim 300$ ns), can be employed to produce a two-qubit gate through capacitive (electrostatic) coupling that can operate over significant distances. This is the coherent version of the widely discussed charge and nano-magnet cellular automata and would offer speed, reduce dissipation, perform quantum computation, while interfacing smoothly with its classical counterpart. This combines the best of two worlds -- the coherence of spin pairs known from quantum technologies, and the strength and range of electrostatic couplings from the charge based classical cellular automata.

  6. 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)

    2013-11-11

    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.

  7. Development of low-temperature solution-processed colloidal quantum dot-based solar cells

    E-Print Network [OSTI]

    Chang, Liang-Yi, Ph. D. Massachusetts Institute of Technology

    2013-01-01

    Solution-processed solar cells incorporating organic semiconductors and inorganic colloidal quantum dots (QDs) are potential alternatives to conventional solar cells fabricated via vacuum or high-temperature sintering ...

  8. QUANTUM DOTS Elliott H. Lieb \\Lambda and Jan Philip Solovej \\Lambda\\Lambda

    E-Print Network [OSTI]

    QUANTUM DOTS Elliott H. Lieb \\Lambda and Jan Philip Solovej \\Lambda\\Lambda Department shown that a Thomas­Fermi type theory for the ground state is asymptotically correct when N and B tend

  9. Efficiency loss mechanisms in colloidal quantum-dot light-emitting diodes

    E-Print Network [OSTI]

    Shirasaki, Yasuhiro

    2013-01-01

    Saturated and tunable emission colors make colloidal quantum-dot light-emitting diodes (QD-LEDs) interesting for the next generation of display and lighting technologies. However, there still remain various hurdles to the ...

  10. Lead Telluride Quantum Dot Solar Cells Displaying External Quantum Efficiencies Exceeding 120%

    E-Print Network [OSTI]

    Böhm, Marcus L.; Jellicoe, Tom C.; Tabachnyk, Maxim; Davis, Nathaniel J. L. K.; Wisnivesky-Rocca-Rivarola, Florencia; Ducati, Caterina; Ehrler, Bruno; Bakulin, Artem A.; Greenham, Neil C.

    2015-10-21

    Multiple exciton generation (MEG) in semiconducting quantum dots is a process which produces multiple charge-carrier pairs from a single excitation. MEG is a possible route to bypass the Shockley-Queisser limit in single-junction solar cells...

  11. North Carolina DOT's Experience with Fiber Reinforced Polymers Authors: Rodger D. Rochelle

    E-Print Network [OSTI]

    North Carolina DOT's Experience with Fiber Reinforced Polymers Authors: Rodger D. Rochelle Gichuru Muchane Sami H. Rizkalla Janos Gergely #12;ABSTRACT This paper discusses North Carolina Department Research Engineer, Research and Development Unit, North Carolina Department of Transportation, 1549 Mail

  12. Quantum Dots Promise to Significantly Boost Solar Cell Efficiencies (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-08-01

    In the search for a third generation of solar-cell technologies, a leading candidate is the use of 'quantum dots' -- tiny spheres of semiconductor material measuring only about 2-10 billionths of a meter in diameter. Quantum dots have the potential to dramatically increase the efficiency of converting sunlight into energy -- perhaps even doubling it in some devices -- because of their ability to generate more than one bound electron-hole pair, or exciton, per incoming photon. NREL has produced quantum dots using colloidal suspensions; then, using molecular self-assembly, they have been fabricated into the first-ever quantum-dot solar cells. While these devices operate with only 4.4% efficiency, they demonstrate the capability for low-cost manufacturing.

  13. Luminescent, quantum dot-based anti-reflective coatings for crystalline silicon photovoltaics

    E-Print Network [OSTI]

    Bruer, Garrett (Garrett A.)

    2010-01-01

    This thesis demonstrates and evaluates the potential application of luminescent quantum dot/polymer solutions on crystalline silicon photovoltaics. After spin coating the QD/polymer onto silicon photodiodes, an increase ...

  14. Optimal tunneling enhances the quantum photovoltaic effect in double quantum dots

    E-Print Network [OSTI]

    Wang, Chen

    We investigate the quantum photovoltaic effect in double quantum dots by applying the nonequilibrium quantum master equation. A drastic suppression of the photovoltaic current is observed near the open circuit voltage, ...

  15. IEEE TRANSACTIONS ON NANOBIOSCIENCE, VOL. 5, NO. 4, DECEMBER 2006 231 Peptide Coated Quantum Dots for

    E-Print Network [OSTI]

    Michalet, Xavier

    IEEE TRANSACTIONS ON NANOBIOSCIENCE, VOL. 5, NO. 4, DECEMBER 2006 231 Peptide Coated Quantum Dots and 5­8 are available online at http://ieeexplore. ieee.org. Digital Object Identifier 10.1109/TNB.2006

  16. Mechanism of lateral ordering of InP dots grown on InGaP layers

    SciTech Connect (OSTI)

    Bortoleto, J.R.R.; Gutierrez, H.R.; Cotta, M.A.; Bettini, J.

    2005-07-04

    The mechanisms leading to the spontaneous formation of a two-dimensional array of InP/InGaP dots grown by chemical-beam epitaxy are discussed. Samples where the InGaP buffer layer was grown at different conditions were characterized by transmission electron microscopy. Our results indicate that a periodic strain field related to lateral two-dimensional compositional modulation in the InGaP buffer layer determines the dot nucleation positions during InP growth. Although the periodic strain field in the InGaP is large enough to align the InP dots, both their shape and optical properties are effectively unaltered. This result shows that compositional modulation can be used as a tool for in situ dot positioning.

  17. Mechanistic Insights into the Formation of InP Quantum Dots

    E-Print Network [OSTI]

    Allen, Peter M.

    The molecular mechanism of InP colloidal quantum dot (QD) syntheses was investigated by NMR spectroscopy. Unlike methods for monodisperse PbSe and CdSe, existing InP syntheses result in total depletion of molecular phosphorous ...

  18. Two photon luminescence from quantum dots using broad and narrowband ultrafast laser pulses 

    E-Print Network [OSTI]

    Balasubramanian, Haribhaskar

    2009-05-15

    semiconductor nanocrystals or quantum dots (QD’s) both theoretically and experimentally. Compared to standard organic dyes, QD’s possess a relatively broad, uniform spectral response that enables better use of the full bandwidth from the broadband laser...

  19. Solar Hydrogen Production Using Carbon Quantum Dots and a Molecular Nickel Catalyst

    E-Print Network [OSTI]

    Martindale, Benjamin C. M.; Hutton, Georgina A. M.; Caputo, Christine A.; Reisner, Erwin

    2015-04-13

    Carbon quantum dots (CQDs) are established as excellent photosensitizers in combination with a molecular catalyst for solar light driven hydrogen production in aqueous solution. The inexpensive CQDs can be prepared by straightforward thermolysis...

  20. Developing an array of site-controlled pyramidal quantum dots emitting polarization-entangled photons

    SciTech Connect (OSTI)

    Juska, G.; Dimastrodonato, V.; Mereni, L. O.; Gocalinska, A.; Pelucchi, E. [Tyndall National Institute, University College Cork, Lee Maltings, Cork (Ireland)

    2013-12-04

    We present a site-controlled, highly symmetric quantum dot system with a density of at least 15 % of polarization-entangled photon emitters. Fidelity values of the entangled state as high as 0.721±0.043 were found.

  1. Zeeman energy and spin relaxation in a one-electron quantum dot

    E-Print Network [OSTI]

    R. Hanson; B. Witkamp; L. M. K. Vandersypen; L. H. Willems van Beveren; J. M. Elzerman; L. P. Kouwenhoven

    2003-11-10

    We have measured the relaxation time, T1, of the spin of a single electron confined in a semiconductor quantum dot (a proposed quantum bit). In a magnetic field, applied parallel to the two-dimensional electron gas in which the quantum dot is defined, Zeeman splitting of the orbital states is directly observed by measurements of electron transport through the dot. By applying short voltage pulses, we can populate the excited spin state with one electron and monitor relaxation of the spin. We find a lower bound on T1 of 50 microseconds at 7.5 T, only limited by our signal-to-noise ratio. A continuous measurement of the charge on the dot has no observable effect on the spin relaxation.

  2. Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates

    E-Print Network [OSTI]

    Walker, Brian J.

    We report narrow-band absorption enhancement of semiconductor nanocrystals via Förster resonance energy transfer from cyanine J-aggregates. These J-aggregated dyes associate electrostatically with short quantum-dot (QD) ...

  3. The physics and chemistry of transport in CdSe quantum dot solids

    E-Print Network [OSTI]

    Jarosz, Mirna, 1981-

    2004-01-01

    Semiconductor quantum dots (QDs) have tunable opto-electronic properties and can be chemically synthesized and manipulated with ease, making them a promising novel material for many diverse applications. An understanding ...

  4. Efficient light emitting devices utilizing CdSe(ZnS) quantum dots in organic host matrices

    E-Print Network [OSTI]

    Coe-Sullivan, Seth (Seth Alexander)

    2002-01-01

    We demonstrate efficient electroluminescence from thin film structures containing core-shell CdSe(ZnS) quantum dots dispersed in molecular organic host materials. In the most efficient devices, excitons are created on the ...

  5. Caltrans Experience with Ternary Mix for Long-performing Concrete Mehdi Parvini, CA DOT

    E-Print Network [OSTI]

    Caltrans Experience with Ternary Mix for Long-performing Concrete Mehdi Parvini, CA DOT Introduction and Background The Project The Result Ternary Mix is a concrete mixture containing three strength, low permeability, corrosion resistance, sulfate resistance, ASR resistance, and elimination

  6. Electrical excitation of colloidally synthesized quantum dots in metal oxide structures

    E-Print Network [OSTI]

    Wood, Vanessa Claire

    2010-01-01

    This thesis develops methods for integrating colloidally synthesized quantum dots (QDs) and metal oxides in optoelectronic devices, presents three distinct light emitting devices (LEDs) with metal oxides surrounding a QD ...

  7. R&D Magazine: Windows into Solar Power Sources with Quantum Dots

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

    30, 2015 R&D Magazine: Windows into Solar Power Sources with Quantum Dots A luminescent solar concentrator is an emerging sunlight harvesting technology that has the potential to...

  8. InP quantum dots: Electronic structure, surface effects, and the redshifted emission

    SciTech Connect (OSTI)

    Fu, H.; Zunger, A.

    1997-07-01

    We present pseudopotential plane-wave electronic-structure calculations on InP quantum dots in an effort to understand quantum confinement and surface effects and to identify the origin of the long-lived and redshifted luminescence. We find that (i) unlike the case in small GaAs dots, the lowest unoccupied state of InP dots is the {Gamma}{sub 1c}-derived direct state rather than the X{sub 1c}-derived indirect state and (ii) unlike the prediction of {bold k}{center_dot}{bold p} models, the highest occupied state in InP dots has a 1sd-type envelope function rather than a (dipole-forbidden) 1pf envelope function. Thus explanations (i) and (ii) to the long-lived redshifted emission in terms of an orbitally forbidden character can be excluded. Furthermore, (iii) fully passivated InP dots have no surface states in the gap. However, (iv) removal of the anion-site passivation leads to a P dangling bond (DB) state just above the valence band, which will act as a trap for photogenerated holes. Similarly, (v) removal of the cation-site passivation leads to an In dangling-bond state below the conduction band. While the energy of the In DB state depends only weakly on quantum size, its radiative lifetime increases with quantum size. The calculated {approximately}300-meV redshift and the {approximately}18 times longer radiative lifetime relative to the dot-interior transition for the 26-{Angstrom} dot with an In DB are in good agreement with the observations of full-luminescence experiments for unetched InP dots. Yet, (vi) this type of redshift due to surface defect is inconsistent with that measured in {ital selective} excitation for HF-etched InP dots. (vii) The latter type of ({open_quotes}resonant{close_quotes}) redshift is compatible with the calculated {ital screened} singlet-triplet splitting in InP dots, suggesting that the slow emitting state seen in selective excitation could be a triplet state. {copyright} {ital 1997} {ital The American Physical Society}

  9. Enhanced ripening behavior of Mg-doped CdSe quantum dots

    E-Print Network [OSTI]

    Kim, Tae-Geun

    In this study, CdO and Mg acetate were added into a mixture of paraffin oil and oleic acid (45:5) by 5 and 1 mEnhanced ripening behavior of Mg-doped CdSe quantum dots Yun-Mo Sung,a) Woo-Chul Kwak, and Woong November 2007; accepted 24 March 2008) Pure CdSe and Mg-doped CdSe nanocrystal quantum dots were

  10. Reach of Environmental Influences on the Indistinguishability of Single Photons from Quantum Dots

    E-Print Network [OSTI]

    Huber, Tobias; Föger, Daniel; Solomon, Glenn; Weihs, Gregor

    2015-01-01

    In this letter, we present a detailed, all optical study of the influence of different excitation schemes on the indistinguishability of single photons from a single InAs quantum dot. For this study, we measure the Hong-Ou-Mandel interference of consecutive photons from the spontaneous emission of an InAs quantum dot state under various excitation schemes and different excitation conditions and give a comparison.

  11. Electronic waiting-time distribution of a quantum-dot spin valve

    E-Print Network [OSTI]

    Björn Sothmann

    2014-10-27

    We discuss the electronic waiting-time distribution of a quantum-dot spin valve, i.e. a single-level quantum dot coupled to two ferromagnetic electrodes with magnetizations that can point in arbitrary directions. We demonstrate that the rich transport physics of this setup such as dynamical channel blockade and spin precession in an interaction-driven exchange field shows up in the waiting-time distribution and analyze the conditions necessary to observe the various effects.

  12. Quantum Dot–Bridge–Fullerene Heterodimers with Controlled Photoinduced Electron Transfer

    SciTech Connect (OSTI)

    Cotlet, M.; Xu, Z.

    2011-06-27

    A series of donor-bridge-acceptor systems in the form of core/shell CdSe/ZnS quantum dot-bridge-fullerene heterodimers (see picture) with varying bridge length and varying quantum dot size were self-assembled by a surface-based stepwise method to demonstrate control of the rate and of the magnitude of fluctuations of photoinduced electron transfer at the single-molecule level.

  13. Final Progress Report for Project Entitled: Quantum Dot Tracers for Use in Engineered Geothermal Systems

    SciTech Connect (OSTI)

    Rose, Peter; Bartl, Michael; Reimus, Paul; Williams, Mark; Mella, Mike

    2015-09-12

    The objective of this project was to develop and demonstrate a new class of tracers that offer great promise for use in characterizing fracture networks in EGS reservoirs. From laboratory synthesis and testing through numerical modeling and field demonstrations, we have demonstrated the amazing versatility and applicability of quantum dot tracers. This report summarizes the results of four years of research into the design, synthesis, and characterization of semiconductor nanocrystals (quantum dots) for use as geothermal tracers.

  14. Regulatory compliance guide for DOT-7A type A packaging design

    SciTech Connect (OSTI)

    Kelly, D.L.

    1996-06-04

    The purpose of this guide is to provide instruction for assuring that the regulatory design requirements for a DOT-7A Type A packaging are met. This guide also supports the testing and evaluation activities that are performed on new packaging designs by a DOE-approved test facility through the DOE`s DOT-7A Test Program. This Guide was updated to incorporate regulatory changes implemented by HM-169A (49 CFR, `Transportation`).

  15. Engaging African Americans in STEM Education | Department of...

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

    engaging young African American students in STEM (science, technology, engineering, and math) education. Director Dot Harris, who leads the Department's Office of Economic Impact...

  16. Savannah River National Laboratory Meets with Historically Black...

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

    in Successful Exchange Joining Director Dot Harris (second from left) were Marlene Kaplan, the Deputy Director of Education and director of EPP, National Oceanic and...

  17. Applications are Open for YOU to Join the 2013 Class of the Minority...

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

    for Minorities in STEM Joining Director Dot Harris (second from left) were Marlene Kaplan, the Deputy Director of Education and director of EPP, National Oceanic and...

  18. Mickey Leland Energy Fellowship Seeking Underrepresented Students...

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

    at the Energy Department Joining Director Dot Harris (second from left) were Marlene Kaplan, the Deputy Director of Education and director of EPP, National Oceanic and...

  19. Fossil Energy Acting Assistant Secretary Recognized at Black...

    Energy Savers [EERE]

    the Year Awards February 19, 2013 - 8:54am Addthis Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and Acting Assistant Secretary of Fossil Energy,...

  20. Engineering of quantum dot photon sources via electro-elastic fields

    E-Print Network [OSTI]

    Rinaldo Trotta; Armando Rastelli

    2015-03-01

    The possibility to generate and manipulate non-classical light using the tools of mature semiconductor technology carries great promise for the implementation of quantum communication science. This is indeed one of the main driving forces behind ongoing research on the study of semiconductor quantum dots. Often referred to as artificial atoms, quantum dots can generate single and entangled photons on demand and, unlike their natural counterpart, can be easily integrated into well-established optoelectronic devices. However, the inherent random nature of the quantum dot growth processes results in a lack of control of their emission properties. This represents a major roadblock towards the exploitation of these quantum emitters in the foreseen applications. This chapter describes a novel class of quantum dot devices that uses the combined action of strain and electric fields to reshape the emission properties of single quantum dots. The resulting electro-elastic fields allow for control of emission and binding energies, charge states, and energy level splittings and are suitable to correct for the quantum dot structural asymmetries that usually prevent these semiconductor nanostructures from emitting polarization-entangled photons. Key experiments in this field are presented and future directions are discussed.

  1. Nanoscale optical positioning of single quantum dots for bright, pure, and on-demand single-photon emission

    E-Print Network [OSTI]

    Sapienza, Luca; Badolato, Antonio; Srinivasan, Kartik

    2015-01-01

    Self-assembled, epitaxially-grown InAs/GaAs quantum dots are promising semiconductor quantum emitters that can be integrated on a chip for a variety of photonic quantum information science applications. However, self-assembled growth results in an essentially random in-plane spatial distribution of quantum dots, presenting a challenge in creating devices that exploit the strong interaction of single quantum dots with highly confined optical modes. Here, we present a photoluminescence imaging approach for locating single quantum dots with respect to alignment features with an average (minimum) position uncertainty < 30 nm (< 10 nm), which represents an enabling technology for the creation of optimized single quantum dot devices. To that end, we create quantum dot single-photon sources, based on a circular Bragg grating geometry, that simultaneously exhibit high collection efficiency (48 % +/- 5 % into a 0.4 numerical aperture lens, close to the theoretically predicted value of 50 %), low multiphoton prob...

  2. Investigations of segregation phenomena in highly strained Mn-doped Ge wetting layers and Ge quantum dots embedded in silicon

    SciTech Connect (OSTI)

    Prestat, E., E-mail: eric.prestat@gmail.com; Porret, C.; Favre-Nicolin, V.; Tainoff, D.; Boukhari, M.; Bayle-Guillemaud, P.; Jamet, M.; Barski, A., E-mail: andre.barski@cea.com [INAC, SP2M, CEA and Université Joseph Fourier, 17 rue des Martyrs, 38054 Grenoble (France)

    2014-03-10

    In this Letter, we investigate manganese diffusion and the formation of Mn precipitates in highly strained, few monolayer thick, Mn-doped Ge wetting layers and nanometric size Ge quantum dot heterostructures embedded in silicon. We show that in this Ge(Mn)/Si system manganese always precipitates and that the size and the position of Mn clusters (precipitates) depend on the growth temperature. At high growth temperature, manganese strongly diffuses from germanium to silicon, whereas decreasing the growth temperature reduces the manganese diffusion. In the germanium quantum dots layers, Mn precipitates are detected, not only in partially relaxed quantum dots but also in fully strained germanium wetting layers between the dots.

  3. High color rendering index white light emitting diodes fabricated from a combination of carbon dots and zinc copper indium sulfide quantum dots

    SciTech Connect (OSTI)

    Sun, Chun; Liu, Wenyan; Zhang, Xiaoyu; Zhang, Yu E-mail: wyu6000@gmail.com; Wang, Yu; Kalytchuk, Sergii; Kershaw, Stephen V.; Rogach, Andrey L.; Zhang, Tieqiang; Zhao, Jun; Yu, William W. E-mail: wyu6000@gmail.com

    2014-06-30

    In a line with most recent trends in developing non-toxic fluorescent nanomaterials, we combined blue emissive carbon dots with green and red emissive zinc copper indium sulfide (ZCIS) core/shell quantum dots (QDs) to achieve white light-emitting diodes (WLEDs) with a high color rendering index of 93. This indicates that ZCIS QDs, with their broad emission bands, can be employed to effectively make up the emission of carbon dots in the yellow and red regions to produce WLEDs in the wide region of color temperature by tuning the volume ratio of these constituting luminophores. Their electroluminescence characteristics including color rendering index, Commission Internationale de l'Eclairage (CIE) color coordinates, and color temperatures were evaluated as a function of forward current. The CIE-1931 chromaticity coordinates of the as-prepared WLEDs, exhibiting good stability, were slightly shifted from (0.321, 0.312) at 10?mA to (0.351, 0.322) at 30?mA, which was mainly caused by the different thermal quenching coefficients of carbon dots and ZCIS QDs.

  4. Investigation of Umbral Dots with the New Vacuum Solar Telescope

    E-Print Network [OSTI]

    Kaifan, Ji; Song, Feng; Yunfei, Yang; Hui, Deng; Feng, Wang

    2015-01-01

    Umbral dots (UDs) are small isolated brightening observed in sunspot umbrae. They are convective phenomena existing inside umbrae. UDs are usually divided into central UDs (CUDs) and peripheral UDs (PUDs) with respect to their positions inside an umbra. Our purpose is to investigate UD properties and analyze their relationships, and further to find whether or not the properties depend on the umbral magnetic field variation. For the purpose, we selected the high-resolution TiO images of four active regions (ARs) obtained under the best seeing conditions with the \\emph{New Vacuum Solar Telescope} (NVST) in Fuxian Solar Observatory of Yunnan Astronomical Observatory, China. The four ARs (NOAA 11598, 11801, 12158, and 12178) include six sunspots. A total of 1220 CUDs were extracted from six sunspots, and 603 PUDs from three sunspots. Meanwhile, the radial component of the magnetic field of the sunspots obtained with the \\emph{Helioseismic and Magnetic Imager} onboard the \\emph{Solar Dynamics Observatory} was used...

  5. Quantum-Dots Based Electrochemical Immunoassay of Interleukin-1?

    SciTech Connect (OSTI)

    Wu, Hong; Liu, Guodong; Wang, Jun; Lin, Yuehe

    2007-07-01

    We describe a quantum-dot (QD, CdSe@ZnS)-based electrochemical immunoassay to detect a protein biomarker, interleukin-1? (IL-1?). QD conjugated with anti-IL-1? antibody was used as a label in an immunorecognition event. After a complete sandwich immunoreaction among the primary IL-1? antibody (immobilized on the avidin-modified magnetic beads), IL-1?, and the QD-labeled secondary antibody, QD labels were attached to the magnetic-bead surface through the antibody-antigen immunocomplex. Electrochemical stripping analysis of the captured QDs was used to quantify the concentration of IL-1? after an acid-dissolution step. The streptavidin-modified magnetic beads and the magnetic separation platform were used to integrate a facile antibody immobilization (through a biotin/streptavidin interaction) with immunoreactions and the isolation of immunocomplexes from reaction solutions in the assay. The voltammetric response is highly linear over the range of 0.5 to 50 ng mL-1 IL 1?, and the limit of detection is estimated to be 0.3 ng mL-1 (18 pM). This QD-based electrochemical immunoassay shows great promise for rapid, simple, and cost-effective analysis of protein biomarkers.

  6. Quantum Dot Solar Cells: High Efficiency through Multiple Exciton Generation

    SciTech Connect (OSTI)

    Hanna, M. C.; Ellingson, R. J.; Beard, M.; Yu, P.; Micic, O. I.; Nozik, A. J.; c.

    2005-01-01

    Impact ionization is a process in which absorbed photons in semiconductors that are at least twice the bandgap can produce multiple electron-hole pairs. For single-bandgap photovoltaic devices, this effect produces greatly enhanced theoretical thermodynamic conversion efficiencies that range from 45-85%, depending upon solar concentration, the cell temperature, and the number of electron-hole pairs produced per photon. For quantum dots (QDs), electron-hole pairs exist as excitons. We have observed astoundingly efficient multiple exciton generation (MEG) in QDs of PbSe (bulk Eg = 0.28 eV), ranging in diameter from 3.9 to 5.7nm (Eg = 0.73, 0.82, and 0.91 eV, respectively). The effective masses of electron and holes are about equal in PbSe, and the onset for efficient MEG occurs at about three times the QD HOMO-LUMO transition (its ''bandgap''). The quantum yield rises quickly after the onset and reaches 300% at 4 x Eg (3.64 eV) for the smallest QD; this means that every QD in the sample produces three electron-hole pairs/photon.

  7. PROPERTIES OF UMBRAL DOTS FROM STRAY LIGHT CORRECTED HINODE FILTERGRAMS

    SciTech Connect (OSTI)

    Louis, Rohan E.; Mathew, Shibu K.; Bayanna, A. Raja; Rubio, Luis R. Bellot; Ichimoto, Kiyoshi; Ravindra, B.

    2012-06-20

    High-resolution blue continuum filtergrams from Hinode are employed to study the umbral fine structure of a regular unipolar sunspot. The removal of scattered light from the images increases the rms contrast by a factor of 1.45 on average. Improvement in image contrast renders identification of short filamentary structures resembling penumbrae that are well separated from the umbra-penumbra boundary and comprise bright filaments/grains flanking dark filaments. Such fine structures were recently detected from ground-based telescopes and have now been observed with Hinode. A multi-level tracking algorithm was used to identify umbral dots (UDs) in both the uncorrected and corrected images and to track them in time. The distribution of the values describing the photometric and geometric properties of UDs is more easily affected by the presence of stray light while it is less severe in the case of kinematic properties. Statistically, UDs exhibit a peak intensity, effective diameter, lifetime, horizontal speed, and a trajectory length of 0.29I{sub QS}, 272 km, 8.4 minutes, 0.45 km s{sup -1}, and 221 km, respectively. The 2 hr 20 minute time sequence depicts several locations where UDs tend to appear and disappear repeatedly with various time intervals. The correction for scattered light in the Hinode filtergrams facilitates photometry of umbral fine structure, which can be related to results obtained from larger telescopes and numerical simulations.

  8. Faculty Adviser Contract Government Senior Honors Thesis This form is intended to inform the Undergraduate Program Office of a faculty member's commitment to advise a senior thesis. A signed

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Faculty Adviser Contract ­ Government Senior Honors Thesis 2014-2015 This form is intended to inform the Undergraduate Program Office of a faculty member's commitment to advise a senior thesis. A signed contract must be submitted in order to enroll in Government 99: Senior Thesis Writers' Workshop

  9. TF Adviser Contract Government Senior Honors Thesis This form is intended to inform the Undergraduate Program Office of a faculty member's commitment to advise a senior thesis. A signed

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    TF Adviser Contract ­ Government Senior Honors Thesis 2014-2015 This form is intended to inform the Undergraduate Program Office of a faculty member's commitment to advise a senior thesis. A signed contract must be submitted in order to enroll in Government 99: Senior Thesis Writers' Workshop, which is a mandatory course

  10. The Honor and Discipline Committee reports to the College each year about the nature of the cases it has heard, the judgments it has made, and the penalties it has determined.

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    The Honor and Discipline Committee reports to the College each year about the nature of the cases it has heard, the judgments it has made, and the penalties it has determined. This report covers-2008 year. Following this report is a report on disciplinary activity in the Dean's Office. Report

  11. GFDL Laboratory Review, June 30 July 2, 2009 Awards and Honors (1d) U.S.DOC/NOAA/OAR/GFDL 6/30/2009 7/2/2009 Page 1

    E-Print Network [OSTI]

    Meteorological Organization V. Ramaswamy (2003) ­ for the research paper "Stratospheric Temperature Trends paper, A Search for Human Influences on the Thermal Structure of the Atmosphere, with B. D. Santer, et/30/2009 ­ 7/2/2009 Page 1 GFDL Awards and Honors ­ Research, Development, and/or Application 1998-2009 (1d

  12. Tuning the Optical Properties of Nanoscale Materials on Surfaces Through Controlled Exchange Reactions on Cadmium Selenide Quantum Dots and Patterning of Gold and QD Nanoparticle Arrays 

    E-Print Network [OSTI]

    Pravitasari, Arika

    2013-11-11

    This work focused on the integration of CdSe quantum dots (QDs) and Au nanoparticles (NPs) as building blocks for the development of quantum dot and plasmonic based optical and sensing devices. The manipulation of nanomaterials ...

  13. The impact of disorder on charge transport in three dimensional quantum dot resonant tunneling structures

    SciTech Connect (OSTI)

    Puthen-Veettil, B. Patterson, R.; König, D.; Conibeer, G.; Green, M. A.

    2014-10-28

    Efficient iso-entropic energy filtering of electronic waves can be realized through nanostructures with three dimensional confinement, such as quantum dot resonant tunneling structures. Large-area deployment of such structures is useful for energy selective contacts but such configuration is susceptible to structural disorders. In this work, the transport properties of quantum-dot-based wide-area resonant tunneling structures, subject to realistic disorder mechanisms, are studied. Positional variations of the quantum dots are shown to reduce the resonant transmission peaks while size variations in the device are shown to reduce as well as broaden the peaks. Increased quantum dot size distribution also results in a peak shift to lower energy which is attributed to large dots dominating transmission. A decrease in barrier thickness reduces the relative peak height while the overall transmission increases dramatically due to lower “series resistance.” While any shift away from ideality can be intuitively expected to reduce the resonance peak, quantification allows better understanding of the tolerances required for fabricating structures based on resonant tunneling phenomena/.

  14. Test and evaluation document for DOT Specification 7A type A packaging. Volume 1

    SciTech Connect (OSTI)

    Kelly, D L

    1997-08-04

    The US Department of Energy (DOE) has been conducting, through several of its operating contractors, an evaluation and testing program to qualify Type A radioactive material packagings per US Department of Transportation (DOT) Specification 7A (DOT-7A) of the Code of Federal Regulations (CFR), Title 49, Part 178 (49 CFR 178). This document summarizes the evaluation and testing performed for all of the packagings successfully qualified in this program. This document supersedes DOE Evaluation Document for DOT-7A Type A Packaging (Edling 1987), originally issued in 1987 by Monsanto Research Corporation Mound Laboratory (MLM), Miamisburg, Ohio, for the Department of Energy, Security Evaluation Program (I)P-4. Mound Laboratory issued four revisions to the document between November 1988 and December 1989. In September 1989, the program was transferred to Westinghouse Hanford Company (Westinghouse Hanford) in Richland, Washington. One additional revision was issued in March 1990 by Westinghouse Hanford. This revision reflects the earlier material and incorporates a number of changes. Evaluation and testing activities on 1208 three DOT-7A Program Dockets resulted in the qualification of three new packaging configurations, which are incorporated herein and summarized. This document presents approximately 300 different packagings that have been determined to meet the requirements for a DOT-7A, type A packaging per 49 CFR 178.350.

  15. Inhibition of plasmonically enhanced interdot energy transfer in quantum dot solids via photo-oxidation

    SciTech Connect (OSTI)

    Sadeghi, S. M.; Nejat, A.; West, R. G.

    2012-11-15

    We studied the impact of photophysical and photochemical processes on the interdot Forster energy transfer in monodisperse CdSe/ZnS quantum dot solids. For this, we investigated emission spectra of CdSe/ZnS quantum dot solids in the vicinity of gold metallic nanoparticles coated with chromium oxide. The metallic nanoparticles were used to enhance the rate of the energy transfer between the quantum dots, while the chromium oxide coating led to significant increase of their photo-oxidation rates. Our results showed that irradiation of such solids with a laser beam can lead to unique spectral changes, including narrowing and blue shift. We investigate these effects in terms of inhibition of the plasmonically enhanced interdot energy transfer between quantum dots via the chromium-oxide accelerated photo-oxidation process. We demonstrate this considering energy-dependent rate of the interdot energy transfer process, plasmonic effects, and the way photo-oxidation enhances non-radiative decay rates of quantum dots with different sizes.

  16. Tunnel-injection GaN quantum dot ultraviolet light-emitting diodes

    SciTech Connect (OSTI)

    Verma, Jai; Kandaswamy, Prem Kumar; Protasenko, Vladimir; Verma, Amit; Grace Xing, Huili; Jena, Debdeep

    2013-01-28

    We demonstrate a GaN quantum dot ultraviolet light-emitting diode that uses tunnel injection of carriers through AlN barriers into the active region. The quantum dot heterostructure is grown by molecular beam epitaxy on AlN templates. The large lattice mismatch between GaN and AlN favors the formation of GaN quantum dots in the Stranski-Krastanov growth mode. Carrier injection by tunneling can mitigate losses incurred in hot-carrier injection in light emitting heterostructures. To achieve tunnel injection, relatively low composition AlGaN is used for n- and p-type layers to simultaneously take advantage of effective band alignment and efficient doping. The small height of the quantum dots results in short-wavelength emission and are simultaneously an effective tool to fight the reduction of oscillator strength from quantum-confined Stark effect due to polarization fields. The strong quantum confinement results in room-temperature electroluminescence peaks at 261 and 340 nm, well above the 365 nm bandgap of bulk GaN. The demonstration opens the doorway to exploit many varied features of quantum dot physics to realize high-efficiency short-wavelength light sources.

  17. Semiconductor Quantum Dots and Quantum Dot Arrays and Applications of Multiple Exciton Generation to Third-Generation Photovoltaic Solar Cells

    SciTech Connect (OSTI)

    Nozik, Arthur J.; Beard, Matthew C.; Luther, Joseph M.; Law, Matt; Ellingson, Randy J.; Johnson, Justin C.

    2010-10-14

    Here, we will first briefly summarize the general principles of QD synthesis using our previous work on InP as an example. Then we will focus on QDs of the IV-VI Pb chalcogenides (PbSe, PbS, and PbTe) and Si QDs because these were among the first QDs that were reported to produce multiple excitons upon absorbing single photons of appropriate energy (a process we call multiple exciton generation (MEG)). We note that in addition to Si and the Pb-VI QDs, two other semiconductor systems (III-V InP QDs(56) and II-VI core-shell CdTe/CdSe QDs(57)) were very recently reported to also produce MEG. Then we will discuss photogenerated carrier dynamics in QDs, including the issues and controversies related to the cooling of hot carriers and the magnitude and significance of MEG in QDs. Finally, we will discuss applications of QDs and QD arrays in novel quantum dot PV cells, where multiple exciton generation from single photons could yield significantly higher PV conversion efficiencies.

  18. Non-Hermitian scattering theory: Resonant tunneling probability amplitude in a quantum dot Hadas Barkay, Edvardas Narevicius, and Nimrod Moiseyev*

    E-Print Network [OSTI]

    Narevicius, Edvardas

    properties of quantum dots, phenomena such as tunneling of electrons must be characterized. Phase, in a manner that enabled them to control the potential of the electrons trapped in it by varying the plungerNon-Hermitian scattering theory: Resonant tunneling probability amplitude in a quantum dot Hadas

  19. Statistics of Coulomb-blockade peak spacings for a partially open quantum dot A. Kaminski and L. I. Glazman

    E-Print Network [OSTI]

    Glazman, Leonid

    Statistics of Coulomb-blockade peak spacings for a partially open quantum dot A. Kaminski and L. I by a sum of two terms. The first one is the electrostatic charging energy, which does not fluctuate all interactions except the charging energy are ignored . For a disordered or chaotic quantum dot

  20. Graphene quantum dots: Beyond a Dirac billiard Florian Libisch,1 Christoph Stampfer,2 and Joachim Burgdrfer1

    E-Print Network [OSTI]

    Florian, Libisch

    Graphene quantum dots: Beyond a Dirac billiard Florian Libisch,1 Christoph Stampfer,2 and Joachim confinement effects in phase-coherent graphene quantum dots with linear dimensions of 10­40 nm. We determine.45.Mt, 73.23. b, 81.05.Uw I. INTRODUCTION Graphene,1,2 the first true two-dimensional 2D solid

  1. Improved device performance of InAs/GaAs quantum dot solar cells with GaP strain compensation layers

    E-Print Network [OSTI]

    Jalali. Bahram

    Improved device performance of InAs/GaAs quantum dot solar cells with GaP strain compensation Center for High Technology Materials, University of New Mexico, 1313 Goddard SE, Albuquerque, New Mexico optical, electrical, and spectral response characteristics of three-stack InAs/GaAs quantum dot solar

  2. Coupled electromechanical effects in wurtzite quantum dots with wetting layers in gate controlled electric fields: The multiband case

    E-Print Network [OSTI]

    Melnik, Roderick

    Coupled electromechanical effects in wurtzite quantum dots with wetting layers in gate controlled quantifies the electromechanical effects on the band structure of wurtzite quantum dots. c Systematic study online 25 September 2012 a b s t r a c t We quantify the influence of coupled electromechanical effects

  3. Edge states in graphene quantum dots: Fractional quantum Hall effect analogies and differences at zero magnetic field

    E-Print Network [OSTI]

    Yannouleas, Constantine

    quantum Hall effect FQHE in two-dimensional 2D semiconductor heterostruc- tures in the presence of a high in finite 2D electronic systems, such as semiconductor quantum dots QDs under high B, ledEdge states in graphene quantum dots: Fractional quantum Hall effect analogies and differences

  4. Atomic and Molecular Quantum Theory Course Number: C561 10 Quantum Confinement in "Quantum dots", Thomas Fermi

    E-Print Network [OSTI]

    Iyengar, Srinivasan S.

    "niche" area called quantum dots. 1. A quantum dot is a very small chunk of semiconductor material with quantum-like properties. These are any effects that the bulk form of the same material does not possess quantum mechanical proper- ties and discrete energy levels. 3. As a first approximation these materials

  5. Large-Area (over 50 cm 50 cm) Freestanding Films of Colloidal InP/ ZnS Quantum Dots

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Large-Area (over 50 cm × 50 cm) Freestanding Films of Colloidal InP/ ZnS Quantum Dots Evren of flexible, freestanding films of InP/ZnS quantum dots (QDs) using fatty acid ligands across very large areas avoiding the need for ligand exchange. When pumped by a blue LED, these Cd-free QD films allow for high

  6. High-Efficiency Photoelectrocatalytic Hydrogen Generation Enabled by Palladium Quantum Dots-Sensitized TiO2 Nanotube Arrays

    E-Print Network [OSTI]

    Lin, Zhiqun

    High-Efficiency Photoelectrocatalytic Hydrogen Generation Enabled by Palladium Quantum Dots of hydrogen as a potential fuel for renewable energy.1 Among the various catalysts, the noble metal palladium ABSTRACT: TiO2 nanotube arrays (TNTAs) sensitized by palladium quantum dots (Pd QDs) exhibit highly

  7. Energy levels of double triangular graphene quantum dots

    SciTech Connect (OSTI)

    Liang, F. X.; Jiang, Z. T. Zhang, H. Y.; Li, S.; Lv, Z. T.

    2014-09-28

    We investigate theoretically the energy levels of the coupled double triangular graphene quantum dots (GQDs) based on the tight-binding Hamiltonian model. The double GQDs including the ZZ-type, ZA-type, and AA-type GQDs with the two GQDs having the zigzag or armchair boundaries can be coupled together via different interdot connections, such as the direct coupling, the chains of benzene rings, and those of carbon atoms. It is shown that the energy spectrum of the coupled double GQDs is the amalgamation of those spectra of the corresponding two isolated GQDs with the modification triggered by the interdot connections. The interdot connection is inclined to lift up the degeneracies of the energy levels in different degree, and as the connection changes from the direct coupling to the long chains, the removal of energy degeneracies is suppressed in ZZ-type and AA-type double GQDs, which indicates that the two coupled GQDs are inclined to become decoupled. Then we consider the influences on the spectra of the coupled double GQDs induced by the electric fields applied on the GQDs or the connection, which manifests as the global spectrum redistribution or the local energy level shift. Finally, we study the symmetrical and asymmetrical energy spectra of the double GQDs caused by the substrates supporting the two GQDs, clearly demonstrating how the substrates affect the double GQDs' spectrum. This research elucidates the energy spectra of the coupled double GQDs, as well as the mechanics of manipulating them by the electric field and the substrates, which would be a significant reference for designing GQD-based devices.

  8. Colloidal quantum dot solar cells on curved and flexible substrates Illan J. Kramer, Gabriel Moreno-Bautista, James C. Minor, Damir Kopilovic, and Edward H. Sargent

    E-Print Network [OSTI]

    Sargent, Edward H. "Ted"

    .1063/1.4810176 Impact of CdSe/ZnS quantum dot spectrum converters on InGaP/GaAs/Ge multi-junction solar cells J. VacColloidal quantum dot solar cells on curved and flexible substrates Illan J. Kramer, Gabriel Moreno Articles you may be interested in Efficient, air-stable colloidal quantum dot solar cells encapsulated

  9. Quantitative strain mapping of InAs/InP quantum dots with 1 nm spatial resolution using dark field electron holography

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    used to measure the strain in InAs quantum dots grown in InP with a spatial resolution of 1 nmQuantitative strain mapping of InAs/InP quantum dots with 1 nm spatial resolution using dark field of semiconductor quantum dots are greatly influenced by their strain state. Dark field electron holography has been

  10. Atomic and Molecular Quantum Theory Course Number: C561 C A Measurement is a Projection or a "dot" product (or inner

    E-Print Network [OSTI]

    Iyengar, Srinivasan S.

    of obtaining these measurements is basically a dot product. The dot product can also be interpreted as a proAtomic and Molecular Quantum Theory Course Number: C561 C A Measurement is a Projection or a "dot" product (or inner product)!! 1. Lets go back and consider the Stern Gerlach experiment that we studied

  11. Engineering quantum dots for electrical control of the fine structure splitting

    E-Print Network [OSTI]

    Pooley, M A; Farrer, I; Ritchie, D A; Shields, A J

    2015-01-01

    We have studied the variation in fine-structure splitting (FSS) under application of vertical electric field in a range of quantum dots grown by different methods. In each sample we confirm that this energy splitting changes linearly over the field range we can access. We conclude that this linear tuning is a general feature of self-assembled quantum dots, observed under different growth conditions, emission wavelengths and in different material systems. Statistical measurements of characteristic parameters such as emission energy, Stark shift and FSS tuning are presented which may provide a guide for future attempts to increase the yield of quantum dots that can be tuned to a minimal value of FSS with vertical electric field.

  12. Engineering quantum dots for electrical control of the fine structure splitting

    E-Print Network [OSTI]

    M. A. Pooley; A. J. Bennett; I. Farrer; D. A. Ritchie; A. J. Shields

    2015-07-22

    We have studied the variation in fine-structure splitting (FSS) under application of vertical electric field in a range of quantum dots grown by different methods. In each sample we confirm that this energy splitting changes linearly over the field range we can access. We conclude that this linear tuning is a general feature of self-assembled quantum dots, observed under different growth conditions, emission wavelengths and in different material systems. Statistical measurements of characteristic parameters such as emission energy, Stark shift and FSS tuning are presented which may provide a guide for future attempts to increase the yield of quantum dots that can be tuned to a minimal value of FSS with vertical electric field.

  13. Mn solid solutions in self-assembled Ge/Si (001) quantum dot heterostructures

    SciTech Connect (OSTI)

    Kassim, J.; Nolph, C.; Reinke, P.; Floro, J. [Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Jamet, M. [Institut Nanosciences et Cryogenie/SP2M, CEA-UJF, F-38054 Grenoble (France)

    2012-12-10

    Heteroepitaxial Ge{sub 0.98}Mn{sub 0.02} quantum dots (QDs) on Si (001) were grown by molecular beam epitaxy. The standard Ge wetting layer-hut-dome-superdome sequence was observed, with no indicators of second phase formation in the surface morphology. We show that Mn forms a dilute solid solution in the Ge quantum dot layer, and a significant fraction of the Mn partitions into a sparse array of buried, Mn-enriched silicide precipitates directly underneath a fraction of the Ge superdomes. The magnetic response from the ultra-thin film indicates the absence of robust room temperature ferromagnetism, perhaps due to anomalous intermixing of Si into the Ge quantum dots.

  14. Microscopic model for intersubband gain from electrically pumped quantum-dot structures

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

    Michael, Stephan; Chow, Weng Wah; Schneider, Han Christian

    2014-10-03

    We study theoretically the performance of electrically pumped self-organized quantum dots as a gain material in the mid-IR range at room temperature. We analyze an AlGaAs/InGaAs based structure composed of dots-in-a-well sandwiched between two quantum wells. We numerically analyze a comprehensive model by combining a many-particle approach for electronic dynamics with a realistic modeling of the electronic states in the whole structure. We investigate the gain both for quasi-equilibrium conditions and current injection. Comparing different structures, we find that steady-state gain can only be realized by an efficient extraction process, which prevents an accumulation of electrons in continuum states, thatmore »make the available scattering pathways through the quantum dot active region too fast to sustain inversion.« less

  15. Manipulation of electron orbitals in hard-wall InAs/InP nanowire quantum dots

    E-Print Network [OSTI]

    Roddaro, Stefano; Ercolani, Daniele; Sorba, Lucia; Beltram, Fabio

    2010-01-01

    We present a novel technique for the manipulation of the energy spectrum of hard-wall InAs/InP nanowire quantum dots. By using two local gate electrodes, we induce a strong electric dipole moment on the dot and demonstrate the controlled modification of its electronic orbitals. Our approach allows us to dramatically enhance the single-particle energy spacing between the first two quantum levels in the dot and thus to increment the working temperature of our InAs/InP single-electron transistors. Our devices display a very robust modulation of the conductance even at liquid nitrogen temperature, while allowing an ultimate control of the electron filling down to the last free carrier. Potential further applications of the technique to time-resolved spin manipulation are also discussed.

  16. Manipulation of electron orbitals in hard-wall InAs/InP nanowire quantum dots

    E-Print Network [OSTI]

    Stefano Roddaro; Andrea Pescaglini; Daniele Ercolani; Lucia Sorba; Fabio Beltram

    2010-12-22

    We present a novel technique for the manipulation of the energy spectrum of hard-wall InAs/InP nanowire quantum dots. By using two local gate electrodes, we induce a strong electric dipole moment on the dot and demonstrate the controlled modification of its electronic orbitals. Our approach allows us to dramatically enhance the single-particle energy spacing between the first two quantum levels in the dot and thus to increment the working temperature of our InAs/InP single-electron transistors. Our devices display a very robust modulation of the conductance even at liquid nitrogen temperature, while allowing an ultimate control of the electron filling down to the last free carrier. Potential further applications of the technique to time-resolved spin manipulation are also discussed.

  17. Carrier multiplication detected through transient photocurrent in device-grade films of lead selenide quantum dots

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

    Gao, Jianbo; Fidler, Andrew F.; Klimov, Victor I.

    2015-09-08

    In carrier multiplication, the absorption of a single photon results in two or more electron–hole pairs. Quantum dots are promising materials for implementing carrier multiplication principles in real-life technologies. So far, however, most of research in this area has focused on optical studies of solution samples with yet to be proven relevance to practical devices. We report ultra-fast electro-optical studies of device-grade films of electronically coupled quantum dots that allow us to observe multiplication directly in the photocurrent. Our studies help rationalize previous results from both optical spectroscopy and steady-state photocurrent measurements and also provide new insights into effects ofmore »electric field and ligand treatments on multiexciton yields. Importantly, we demonstrate that using appropriate chemical treatments of the films, extra charges produced by carrier multiplication can be extracted from the quantum dots before they are lost to Auger recombination and hence can contribute to photocurrent of practical devices.« less

  18. High fidelity ac gate operations of the quantum dot hybrid qubit

    E-Print Network [OSTI]

    Clement H. Wong

    2015-10-20

    Semiconductor quantum dots in silicon are promising qubits because of long spin coherence times and their potential for scalability. However, such qubits with complete electrical control and fidelities above the threshold for quantum error correction have not yet been achieved. We show theoretically that the threshold fidelity can be achieved with ac gate operation of the quantum dot hybrid qubit. Formed by three electrons in a double dot, this qubit is electrically controlled, does not require magnetic fields, and runs at GHz gate speeds. We analyze the decoherence caused by 1/f charge noise in this qubit, find parameters that minimize the charge noise dependence in the qubit frequency, and determine the optimal working points for ac gate operations that drive the detuning and tunnel coupling.

  19. Luminescence of CdSe/ZnS quantum dots infiltrated into an opal matrix

    SciTech Connect (OSTI)

    Gruzintsev, A. N. Emelchenko, G. A.; Masalov, V. M.; Yakimov, E. E.; Barthou, C.; Maitre, A.

    2009-02-15

    The effect of the photonic band gap in the photonic crystal, the synthesized SiO{sub 2} opal with embedded CdSe/ZnS quantum dots, on its luminescence in the visible spectral region is studied. It is shown that the position of the photonic band gap in the luminescence and reflectance spectra for the infiltrated opal depends on the diameter of the constituent nanospheres and on the angle of recording the signal. The optimal conditions for embedding the CdSe/ZnS quantum dots from the solution into the opal matrix are determined. It is found that, for the opal-CdSe/ZnS nanocomposites, the emission intensity decreases and the luminescence decay time increases in the spatial directions, in which the spectral positions of the photonic band gap and the luminescence peak of the quantum dots coincide.

  20. Design of quantum dot lattices in amorphous matrices by ion beam irradiation

    SciTech Connect (OSTI)

    Buljan, M.; Bogdanovic-Radovic, I.; Karlusic, M.; Desnica, U. V.; Radic, N.; Jaksic, M.; Salamon, K.; Drazic, G.; Bernstorff, S.; Holy, V.

    2011-10-15

    We report on the highly controllable self-assembly of semiconductor quantum dots and metallic nanoparticles in a solid amorphous matrix, induced by ion beam irradiation of an amorphous multilayer. We demonstrate experimentally and theoretically a possibility to tune the basic structural properties of the quantum dots in a wide range. Furthermore, the sizes, distances, and arrangement type of the quantum dots follow simple equations dependent on the irradiation and the multilayer properties. We present a Monte Carlo model for the simulation and prediction of the structural properties of the materials formed by this method. The presented results enable engineering and simple production of functional materials or simple devices interesting for applications in nanotechnology.

  1. AUTHORIZING THE DOT SPECIFICATION 6M PACKAGING FOR CONTINUED USE AT THE SAVANNAH RIVER SITE

    SciTech Connect (OSTI)

    Watkins, R.; Loftin, B.; Hoang, D.

    2010-03-04

    The U.S. Department of Transportation (DOT) Specification 6M packaging was in extensive use for more than 40 years for in-commerce shipments of Type B quantities of fissile and radioactive material (RAM) across the USA, among the Department of Energy (DOE) laboratories, and between facilities in the DOE production complex. In January 2004, the DOT Research and Special Programs Administration (RSPA) Agency issued a final rule in the Federal Register to ammend requirements in the Hazardous Materials Regulations (HMR) pertaining to the transportation of radioactive materials. The final rule became effective on October 1, 2004. One of those changes discontinued the use of the DOT specification 6M, along with other DOT specification packagings, on October 1, 2008. A main driver for the change was due to the fact that 6M specification packagings were not supported by a Safety Analysis Report for Packagings (SARP) that was compliant with Title 10 of the Code of Federal Regulations (CFR) Part 71 (10 CFR 71). The regulatory rules for the discontinued use have been edited in Title 49 of the CFR Parts 100-185, 2004 edition and thereafter. Prior to October 1, 2008, the use of the 6M within the boundaries of the Savannah River Site (SRS), called an onsite transfer, was governed by an onsite transportation document that referenced 49 CFR Parts 100-185. SRS had to develop an Onsite Safety Assessment (OSA) which was independent of 49 CFR in order to justify the continued use of the DOT Specification 6M for the transfer of radioactive material (RAM) at the SRS after October 1, 2008. This paper will discuss the methodology for and difficulties associated with authorizing the DOT Specification 6M Packaging for continued use at the Savannah River Site.

  2. Temperature dependency of the emission properties from positioned In(Ga)As/GaAs quantum dots

    SciTech Connect (OSTI)

    Braun, T.; Schneider, C.; Maier, S.; Forchel, A.; Höfling, S.; Kamp, M.; Igusa, R.; Iwamoto, S.; Arakawa, Y.

    2014-09-15

    In this letter we study the influence of temperature and excitation power on the emission linewidth from site-controlled InGaAs/GaAs quantum dots grown on nanoholes defined by electron beam lithography and wet chemical etching. We identify thermal electron activation as well as direct exciton loss as the dominant intensity quenching channels. Additionally, we carefully analyze the effects of optical and acoustic phonons as well as close-by defects on the emission linewidth by means of temperature and power dependent micro-photoluminescence on single quantum dots with large pitches.

  3. g-factor anisotropy in nanowire-based InAs quantum dots

    SciTech Connect (OSTI)

    D'Hollosy, Samuel; Fábián, Gábor; Baumgartner, Andreas; Schönenberger, Christian; Nygård, Jesper

    2013-12-04

    The determination and control of the electron g-factor in semiconductor quantum dots (QDs) are fundamental prerequisites in modern concepts of spintronics and spin-based quantum computation. We study the dependence of the g-factor on the orientation of an external magnetic field in quantum dots (QDs) formed between two metallic contacts on stacking fault free InAs nanowires. We extract the g-factor from the splitting of Kondo resonances and find that it varies continuously in the range between |g*| = 5 and 15.

  4. Photo-induced conductance fluctuations in mesoscopic Ge/Si systems with quantum dots

    SciTech Connect (OSTI)

    Stepina, N. P.; Dvurechenskii, A. V.; Nikiforov, A. I.; Moers, J.; Gruetzmacher, D.

    2014-08-20

    We study the evolution of electron transport in strongly localized mesoscopic system with quantum dots under small photon flux. Exploring devices with narrow transport channels lead to the observation of giant fluctuations of the photoconductance, which is attributed to the strong dependence of hopping current on the filling of dots by holes. In our experiments, single-photon mode operation is indicated by the linear dependence of the frequency of photo-induced fluctuations on the light intensity and the step-like response of conductance on the pulse excitation. The effect of the light wavelength, measurement temperature, size of the conductive channel on the device efficiency are considered.

  5. Magnetic field induced quantum dot brightening in liquid crystal synergized magnetic and semiconducting nanoparticle composite assemblies

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

    Amaral, Jose Jussi; Wan, Jacky; Rodarte, Andrea L.; Ferri, Christopher; Quint, Makiko T.; Pandolfi, Ronald J.; Scheibner, Michael; Hirst, Linda S.; Ghosh, Sayantani

    2014-10-22

    The design and development of multifunctional composite materials from artificial nano-constituents is one of the most compelling current research areas. This drive to improve over nature and produce ‘meta-materials’ has met with some success, but results have proven limited with regards to both the demonstration of synergistic functionalities and in the ability to manipulate the material properties post-fabrication and in situ. Here, magnetic nanoparticles (MNPs) and semiconducting quantum dots (QDs) are co-assembled in a nematic liquid crystalline (LC) matrix, forming composite structures in which the emission intensity of the quantum dots is systematically and reversibly controlled with a small appliedmore »magnetic field (« less

  6. Investigation of quantum confinement behavior of zinc sulphide quantum dots synthesized via various chemical methods

    SciTech Connect (OSTI)

    Jose, Meera, E-mail: gunasekaran@karunya.edu; Sakthivel, T., E-mail: gunasekaran@karunya.edu; Chandran, Hrisheekesh T., E-mail: gunasekaran@karunya.edu; Nivea, R., E-mail: gunasekaran@karunya.edu; Gunasekaran, V., E-mail: gunasekaran@karunya.edu [Nanomaterials Research Lab, Department of Nanoscience and Technology, Karunya University, Coimbatore - 641 114, Tamil Nadu (India)

    2014-10-15

    In this work, undoped and Ag-doped ZnS quantum dots were synthesized using various chemical methods. The products were characterized using X-ray diffraction (XRD), UV-visible spectroscopy and Photoluminescence spectroscopy. Our results revealed that the size of the as-prepared samples range from 1–6 nm in diameter and have a cubic zinc-blende structure. Also, we observed the emission of different wavelength of light from different sized quantum dots of the same material due to quantum confinement effect. The results will be presented in detail and ZnS can be a potential candidate for optical device development and applications.

  7. Fast Electrical Control of a Quantum Dot Strongly Coupled to a Nano-resonator

    E-Print Network [OSTI]

    Andrei Faraon; Arka Majumdar; Hyochul Kim; Pierre Petroff; Jelena Vuckovic

    2009-06-03

    The resonance frequency of an InAs quantum dot strongly coupled to a GaAs photonic crystal cavity was electrically controlled via quantum confined Stark effect. Stark shifts up to 0.3meV were achieved using a lateral Schottky electrode that created a local depletion region at the location of the quantum dot. We report switching of a probe laser coherently coupled to the cavity up to speeds as high as 150MHz, limited by the RC constant of the transmission line. The coupling rate and the magnitude of the Stark shift with electric field were investigated while coherently probing the system.

  8. Test and evaluation document for DOT Specification 7A Type A Packaging. Revision 3

    SciTech Connect (OSTI)

    1996-01-30

    The US Department of Energy (DOE) has been conducting, through several of its operating contractors, an evaluation and testing program to qualify Type A radioactive material packagings per US Department of Transportation (DOT) Specification 7A (DOT-7A) of the Code of Federal Regulations (CFR), Title 49, Part 178 (49 CFR 178). The program is currently administered by the DOE, Office of Facility Safety Analysis, DOE/EH-32, at DOE-Headquarters (DOE-HQ) in Germantown, Maryland. This document summarizes the evaluation and testing performed for all of the packagings successfully qualified in this program.

  9. Spontaneous emission control of single quantum dots by electromechanical tuning of a photonic crystal cavity

    E-Print Network [OSTI]

    Midolo, L; Hoang, T B; Xia, T; van Otten, F W M; Li, L H; Linfield, E; Lermer, M; Höfling, S; Fiore, A

    2012-01-01

    We demonstrate the control of the spontaneous emission rate of single InAs quantum dots embedded in a double-membrane photonic crystal cavity by the electromechanical tuning of the cavity resonance. Controlling the separation between the two membranes with an electrostatic field we obtain the real-time spectral alignment of the cavity mode to the excitonic line and we observe an enhancement of the spontaneous emission rate at resonance. The cavity has been tuned over 13 nm without shifting the exciton energies. A spontaneous emission enhancement of 4.5 has been achieved with a coupling efficiency of the dot to the mode 92%.

  10. A finite element analysis of a silicon based double quantum dot structure

    E-Print Network [OSTI]

    S. Rahman; J. Gorman; C. H. W. Barnes; D. A. Williams; H. P. Langtangen

    2006-04-06

    We present the results of a finite-element solution of the Laplace equation for the silicon-based trench-isolated double quantum-dot and the capacitively-coupled single-electron transistor device architecture. This system is a candidate for charge and spin-based quantum computation in the solid state, as demonstrated by recent coherent-charge oscillation experiments. Our key findings demonstrate control of the electric potential and electric field in the vicinity of the double quantum-dot by the electric potential applied to the in-plane gates. This constitutes a useful theoretical analysis of the silicon-based architecture for quantum information processing applications.

  11. Safety analysis report for packaging: the ORNL DOT specification 6M - special form package

    SciTech Connect (OSTI)

    Schaich, R.W.

    1982-07-01

    The ORNL DOT Specification 6M - Special Form Package was fabricated at the Oak Ridge Nation al Laboratory (ORNL) for the transport of Type B solid non-fissile radioactive materials in special form. The package was evaluated on the basis of tests performed by the Dow Chemical Company, Rocky Flats Division, on the DOT-6M container and special form tests performed on a variety of stainless steel capsules at ORNL by Operations Division personnel. The results of these evaluations demonstrate that the package is in compliance with the applicable regulations for the transport of Type B quantities in special form of non-fissile radioactive materials.

  12. The Honorable Patricia Titer -

    Office of Legacy Management (LM)

    to forward.the enclosed information related to the former. American Machine and Foundry Co. site in your ' jurisdiction that performed work for DOE's predecessor agencies....

  13. Honoring Energy Department Vets

    SciTech Connect (OSTI)

    Chu, Steven; Majors, Alvan; Underwood, David

    2012-01-01

    Veterans from the Army, Air Force, Navy, Marine Corps and the National Guard who work at the Department of Energy met Wednesday with Secretary Steven Chu, who hosted more than a dozen former service members to thank them for their continued service to America.

  14. ESnet awarded honorable mention

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

    of next-generation research in areas including high-energy physics, climate change, genomics and other fields is challenging the capacity of the scientific networks that support...

  15. Honoring Energy Department Vets

    ScienceCinema (OSTI)

    Chu, Steven; Majors, Alvan; Underwood, David;

    2013-05-29

    Veterans from the Army, Air Force, Navy, Marine Corps and the National Guard who work at the Department of Energy met Wednesday with Secretary Steven Chu, who hosted more than a dozen former service members to thank them for their continued service to America.

  16. Multivariate Analysis I (Honors)

    E-Print Network [OSTI]

    Course Description. Credit Hours: 3.00. Topics covered may include a unified modern treatment of functions of several variables. Topics covered include the ...

  17. The Honorable Dick Cheney

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

    and Energy Reliability (OE-20) U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 Re: Notice of Proposed Rulemaking: Coordination of Federal...

  18. HIGH HONORS Juan Acosta

    E-Print Network [OSTI]

    Spirtes, Peter

    Ruiyang Lin Ruoshu Liu Xingnan Liu Yu Liu Angela Liu Zhuoran Liu Tristan Lockwood Chloe Lula Sophia Makal

  19. The Honorable Ernest Moniz

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE- Non-ResidentialAlliantPGE andOffice -Energy CleanResearchNREL's VisualDr.1

  20. ,The Honorable Donald Hart

    Office of Legacy Management (LM)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield Municipal Gas &SCE-SessionsSouth DakotaRobbins and Myers Co -VANaval Ordnance -Sites..