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Sample records for mem guatemala date

  1. (Consultecnia, Guatemala City (Guatemala)); Altseimer, J.; Thayer...

    Office of Scientific and Technical Information (OSTI)

    Desarrollo Geotermico, Guatemala City (Guatemala). Inst. Nacional de Electrificacion) 15 GEOTHERMAL ENERGY; 60 APPLIED LIFE SCIENCES; DEHYDRATORS; DESIGN; OPERATION; PERFORMANCE;...

  2. Search for: microelectromechanical OR MEMS | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    microelectromechanical OR MEMS Find + Advanced Search × Advanced Search All Fields: microelectromechanical OR MEMS Title: Full Text: Bibliographic Data: Creator / Author: Name Name ORCID Article Type: All Accepted Manuscript Published Article Publisher's Accepted Manuscript Journal Name: Subject: Identifier Numbers: Research Org: Sponsoring Org: Publication Date: to Update Date: to Sort: Relevance (highest to lowest) Publication Date (newest first) Publication Date (oldest first) Close Clear

  3. Search for: microelectromechanical OR MEMS | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    microelectromechanical OR MEMS Find + Advanced Search × Advanced Search All Fields: microelectromechanical OR MEMS Title: Full Text: Bibliographic Data: Creator / Author: Name Name ORCID Article Type: All Accepted Manuscript Published Article Publisher's Accepted Manuscript Journal Name: Subject: Identifier Numbers: Research Org: Sponsoring Org: Publication Date: to Update Date: to Sort: Relevance (highest to lowest) Publication Date (newest first) Publication Date (oldest first) Close Clear

  4. DATE:

    Energy.gov [DOE] (indexed site)

    36 DATE: April 23, 2012 TO: Procurement Directors FROM: Director, Policy Division Office of Procurement and Assistance Policy Office of Procurement and Assistance Management...

  5. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    POLICY FLASH 2013-45 DATE: April 16, 2013 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and ...

  6. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    61 DATE: June 19, 2013 TO: Procurement Directors FROM: Director Policy Division Office of Procurement and Assistance Policy Office of Acquisition and Project Management SUBJECT: ...

  7. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    5 DATE: April 10, 2014 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management ...

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    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    1 DATE: March 10, 2014 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management ...

  9. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    3-12 DATE: December 7, 2012 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management ...

  10. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    4-35 DATE: July 09, 2014 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management ...

  11. DATE:

    Energy.gov [DOE] (indexed site)

    DATE: February 1, 2012 TO: Procurement Directors FROM: Director, Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Acquisition...

  12. DATE:

    Energy.gov [DOE] (indexed site)

    38 DATE: May 03, 2012 TO: Procurement Directors FROM: Director, Contract and Financial Assistance Policy Division Office of Policy Office of Procurement and Assistance Management...

  13. DATE:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 By Julia Raymer at 7:58 am, Nov 05, 2013 Nov 05, 2013 DATE: of 1 RPP-RPT-54981, Revision 0 i Table of Contents 1. Summary .................................................................................................................................. 1 2. Introduction ............................................................................................................................. 3 3. Discussion

  14. DATE:

    Office of Legacy Management (LM)

    -RL5- DATE: September 13, 1990 TO: Alexander Williams (w 39 fusrap6 I FROM: Ed Mitchellzm SUBJECT: Elimination Recommendation for American Machine and Foundry in New York City The...

  15. DATE:

    Office of Environmental Management (EM)

    2-22 DATE: February 1, 2012 TO: Procurement Directors FROM: Director, Office of Procurement and Assistance Policy Office of Procurement and Assistance Management SUBJECT: Acquisition Letter AL 2012-07/Financial Acquisition Letter FAL 2012-01 Congressional Notification of Pending Award of a Contract Action, Announcement of Selected Applications for Negotiation of Financial Assistance Awards, or to Award a Financial Assistance Action in Excess of $1 Million SUMMARY: AL 2012-07/FAL 2012-01 (AL/FAL)

  16. Dated:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    cause appearing, IT IS HEREBY ORDERED: 1. The Schedule Scheduling Order is stayed pending execution of a settlement agreement and stipulated final order. Dated: ~ /,/ .,2015 Christopher T. Saucedo Hearing Officer 3 Complainant, v. UNITED STATES DEPARTMENT OF ENERGY, and NUCLEAR WASTE PARTNERSHIP, LLC, Respondents. No. HWB 14-21 (CO) CERTIFICATE OF SERVICE I hereby certify that a copy of the STIPULATED JOINT MOTION TO STAY THE SCHEDULING ORDER has been sent electronically to the following on May

  17. DATE:

    Office of Legacy Management (LM)

    a? ,itbd States Government memorandum Department of Energy DATE: APR 15 893 REPLY TO EM-421 (W. Williams, 903-8149) ATTN OF: Authorization for Remedial Action at the Former Associate Aircraft Site in SUBJECT: Fairfield, Ohio TO: W. Seay, DOE Oak Ridge Field Office The former Associate Aircraft Tool and Manufacturing, Inc., site at 3660 Dixie Highway, Fairfield, Ohio, is designated for remedial action under the Formerly Utilized Sites Remedial Action Program (FUSRAP). Force Control Industries is

  18. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    POLICY FLASH 2014-35 DATE: July 09, 2014 TO: Procurement Directors FROM: Director Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: Rescission of American Recovery and Reinvestment Act Reporting Requirements. SUMMARY: Financial Assistance Letter (FAL) 2014-xx provides COs with: 1) notice of the recession of the reporting requirements for recipients of ARRA funds in accordance with the recently passed P.L. 113- 76,

  19. [DATE]

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ______ This is a Request for Information (RFI) only. EERE will not pay for information provided under this RFI and no project will be supported as a result of this RFI. This RFI is not accepting applications for financial assistance or financial incentives. EERE may or may not issue a Funding Opportunity Announcement (FOA) based on consideration of the input received from this RFI. Supporting Clean Energy Start-ups: Industry and Investment Partnerships for Scaling Innovation DATE: October 19,

  20. Date

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Template Revised: 6/12/2014 Template Reviewed: 6/12/2014 Operated for the U.S. Department of Energy by Sandia Corporation P.O. Box 5800 MS-1461 Albuquerque, New Mexico 87185-1461 Date Contractor Name Address Attention: Based on our earlier discussions, the Contract Audit Department at Sandia Corporation, which operates Sandia National Laboratories (Sandia) will audit costs incurred through your fiscal year ending XXXXXX on the following contracts placed with your company: Contract(s) Type of

  1. Sandia MEMS

    Energy Science and Technology Software Center

    2002-06-13

    SUMMiT V (Sandia Ultra planar Multi level MEMS Technology) is a 5 level surface micromachine fabrication technology, which customers intornal and external to Sandia can access to fabricate prototype MEMS devices. This CD contains an integrated set of electronic files that: a) Describe the SUMMiT V fabrication process b) Provide enabling educational information (including pictures, videos, technical information) c) Facilitate the process of designing MEMS with the SUMMiT process (prototype file, Design Rule Checker, Standardmore » Parts Library) d) Facilitate the process of having MEMS fabricated at Sandia National Laboratories e) Facilitate the process of having post-fabrication services performed. While there exist some files on the CD that are used in conjunction with software package AutoCAD, these files are not intended for use independent of the CD. Nole that the customer must purchase his/her own copy of Aut0CAD to use with these files.« less

  2. Update on the Sandia MEMS Passive Shock Sensor. (Conference)...

    Office of Scientific and Technical Information (OSTI)

    on the Sandia MEMS Passive Shock Sensor. Abstract not provided. Authors: Mitchell, John Anthony ; Gustafson, Carl Publication Date: 2008-03-01 OSTI Identifier: 1145847 Report...

  3. Karstic mountain almost conquered. [Guatemala

    SciTech Connect

    Not Available

    1982-06-10

    International design and construction teams building a 300-Mw hydroelectric system high in central Guatemala's rugged mountains since 1977 have persevered through karstic-limestone nightmares, logistical bottlenecks and political upheaval to bring the $700-million Rio Chixoy project close to completion. The costly power push, requiring the largest construction effort in Guatemala's modern history, plays a critical role for the future. When all five Pelton-wheel turbines are spinning late next year, their output will more than double electricity production in Central America's poorest, most populous country. Despite numerous delays, design changes and cost increases above the original $240-million bid package, work has progressed to the final stages on a 360-ft-high rockfill dam, 16-mile power tunnel and aboveground powerhouse.

  4. Guatemala: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Country Profile Name Guatemala Population 15,806,675 GDP 49,880,000,000 Energy Consumption 0.21 Quadrillion Btu 2-letter ISO code GT 3-letter ISO code GTM Numeric ISO...

  5. Failure mechanisms in MEMS.

    SciTech Connect

    Walraven, Jeremy Allen

    2003-07-01

    MEMS components by their very nature have different and unique failure mechanisms than their macroscopic counterparts. This paper discusses failure mechanisms observed in various MEMS components and technologies. MEMS devices fabricated using bulk and surface micromachining process technologies are emphasized. MEMS devices offer uniqueness in their application, fabrication, and functionality. Their uniqueness creates various failure mechanisms not typically found in their bulk or IC counterparts. In ICs, electrical precautions are taken to mitigate failure. In MEMS, both electrical and mechanical precautions must be enacted to reduce the risk of failure and increased reliability. Unlike ICs, many MEMS components are designed to interact with their environment, making the fabrication, testing, and packaging processes critical for the success of the device.

  6. (Surveying isolated diesel power stations in Guatemala)

    SciTech Connect

    Waddle, D.B.

    1990-02-26

    I travelled to Guatemala City, Guatemala, to lead a team of specialists to study the operating, administrative, and management efficiency of isolated diesel power plants, operated by Instituto Nacional de Electrificacion (INDE). The study is part of a global initiative managed jointly by the Agency for International Development and the World Bank. The power plants were audited, including INDE's largest isolated diesel station, and two, much smaller municipal and privately owned stations. I returned to Oak Ridge on February 22, 1990.

  7. Guatemala: World Oil Report 1991

    SciTech Connect

    Not Available

    1991-08-01

    This paper reports that government officials have been working on changes to the hydrocarbon law to make it easier for operators to explore. In a reform effort, Minister of Energy and Mines Carlos Hutarte brought a new staff dedicated to spurring oil development into office with him. This includes the Directorate of Hydrocarbons, which held a three-day seminar in Dallas, Texas, to acquaint U.S. firms with new policies. Only one company, Basic Resources International, has been operating in Guatemala over the last year. The firm drilled three onshore wells in 1990 for 16,499 ft, including one oil producer. Two further onshore wells are slated this year. Oil production from 14 active wells out of 16 capable averaged 3,943 bpd, up 8.4% from 1989. Reserves are 191 MMbbl.

  8. Atmospheric lead in downtown Guatemala City

    SciTech Connect

    Durando, M.L.; Aragon, S.R.

    1982-01-01

    Atomic absorption (AA) analysis was employed to determine, for the first time in this country, lead concentrations in aerosols collected in Nuclepore filter media during the months of February and March (1980) in Guatemala City, Guatemala. In particular, the lead in the atmospheric fine particulate was measured in different downtown locations around noontime and in a single location at 1-h intervals throughout the day. The first was used to study short-term variations from one location to the other, and the second one was used to correlate parameters such as traffic density and wind velocity with the levels of airborne lead on the same day. In addition, this paper presents a brief discussion of the lead content in Guatemalan gasoline, the lead levels in street dusts, and the total suspended particulate matter in downtown Guatemala City.

  9. memP

    Energy Science and Technology Software Center

    2010-02-05

    The lightweight heap profiling tool memP Version 1 provides a library that can be used with MPI applications that make use of heap memory allocations to provide profile data based on the per-task high-water-mark of heap allocation. The memP output is generated as a text report that can present summary information or specific detail of the allocation call site data for each task The memP library source code is based on teh mpiP MPI profilingmore » library (http://mpip.sourceforge.net), but is substantially different in functionality and organization.« less

  10. MEMS in microfluidic channels.

    SciTech Connect

    Ashby, Carol Iris Hill; Okandan, Murat; Michalske, Terry A.; Sounart, Thomas L.; Matzke, Carolyn M.

    2004-03-01

    Microelectromechanical systems (MEMS) comprise a new class of devices that include various forms of sensors and actuators. Recent studies have shown that microscale cantilever structures are able to detect a wide range of chemicals, biomolecules or even single bacterial cells. In this approach, cantilever deflection replaces optical fluorescence detection thereby eliminating complex chemical tagging steps that are difficult to achieve with chip-based architectures. A key challenge to utilizing this new detection scheme is the incorporation of functionalized MEMS structures within complex microfluidic channel architectures. The ability to accomplish this integration is currently limited by the processing approaches used to seal lids on pre-etched microfluidic channels. This report describes Sandia's first construction of MEMS instrumented microfluidic chips, which were fabricated by combining our leading capabilities in MEMS processing with our low-temperature photolithographic method for fabricating microfluidic channels. We have explored in-situ cantilevers and other similar passive MEMS devices as a new approach to directly sense fluid transport, and have successfully monitored local flow rates and viscosities within microfluidic channels. Actuated MEMS structures have also been incorporated into microfluidic channels, and the electrical requirements for actuation in liquids have been quantified with an elegant theory. Electrostatic actuation in water has been accomplished, and a novel technique for monitoring local electrical conductivities has been invented.

  11. MEMS fluidic actuator

    DOEpatents

    Kholwadwala, Deepesh K.; Johnston, Gabriel A.; Rohrer, Brandon R.; Galambos, Paul C.; Okandan, Murat

    2007-07-24

    The present invention comprises a novel, lightweight, massively parallel device comprising microelectromechanical (MEMS) fluidic actuators, to reconfigure the profile, of a surface. Each microfluidic actuator comprises an independent bladder that can act as both a sensor and an actuator. A MEMS sensor, and a MEMS valve within each microfluidic actuator, operate cooperatively to monitor the fluid within each bladder, and regulate the flow of the fluid entering and exiting each bladder. When adjacently spaced in a array, microfluidic actuators can create arbitrary surface profiles in response to a change in the operating environment of the surface. In an embodiment of the invention, the profile of an airfoil is controlled by independent extension and contraction of a plurality of actuators, that operate to displace a compliant cover.

  12. Guatemala-USAID Climate Activities | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Organization U.S. Agency for International Development Sector Land Focus Area Agriculture Topics Background analysis Website http:www.usaid.govourwork Country Guatemala...

  13. Guatemala-UNEP Risoe Technology Needs Assessment Program | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    UNEP Risoe Technology Needs Assessment Program Jump to: navigation, search Name Guatemala-UNEP Risoe-Technology Needs Assessment Program AgencyCompany Organization UNEP-Risoe...

  14. Guatemala-IAEA Energy Planning | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    IAEA Energy Planning Jump to: navigation, search Name Guatemala-IAEA Energy Planning AgencyCompany Organization International Atomic Energy Agency Sector Energy Topics Background...

  15. Failure analysis issues in microelectromechanical systems (MEMS...

    Office of Scientific and Technical Information (OSTI)

    Title: Failure analysis issues in microelectromechanical systems (MEMS). Failure analysis and device characterization of MEMS components are critical steps in understanding the ...

  16. (Solar energy technology transfer, Guatemala City, Guatemala and Tegucigalpa, Honduras, August 20--August 30, 1989)

    SciTech Connect

    Waddle, D.B.

    1989-09-05

    I travelled to Guatemala City, Guatemala and to Tegucigalpa, Honduras to gather information regarding the possibility of transferring photovoltaic technology for rural household uses in each respective country. Meetings were held with US government officials in each country mission (USAID and the commercial attaches); with utility officials; cooperative managers; and PVO's. The overall response was very positive; two of the electric utilities interviewed would like to begin program design immediately. A coffee cooperative with 38,000 members also expressed a keen interest in putting into place a program similar to the photovoltaic household energy program established in the Dominican Republic. The purpose of the trip was to establish lines of communication with perspective project cooperators; that objective was accomplished.

  17. Future challenges for MEMS failure analysis. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Title: Future challenges for MEMS failure analysis. MEMS processes and components are ... Specific areas of concern for the failure analyst will also be discussed. MEMS components ...

  18. (Survey of three isolated diesel power stations in Guatemala)

    SciTech Connect

    Chronowski, R.A.

    1990-03-15

    I traveled to Guatemala City, Guatemala to participate with a team of specialists to study the operating, administrative, and management efficiency of isolated diesel power plants, operated by Instituto Nacional de Electrificacion (INDE). The study is part of a global initiative managed jointly by the Agency for International Development and the World Bank. The power plants were audited, including INDE's largest isolated diesel station, and two much smaller municipal and privately owned stations. I returned to the USA on February 20, 1990.

  19. Optically transduced MEMS magnetometer

    DOEpatents

    Nielson, Gregory N; Langlois, Eric

    2014-03-18

    MEMS magnetometers with optically transduced resonator displacement are described herein. Improved sensitivity, crosstalk reduction, and extended dynamic range may be achieved with devices including a deflectable resonator suspended from the support, a first grating extending from the support and disposed over the resonator, a pair of drive electrodes to drive an alternating current through the resonator, and a second grating in the resonator overlapping the first grating to form a multi-layer grating having apertures that vary dimensionally in response to deflection occurring as the resonator mechanically resonates in a plane parallel to the first grating in the presence of a magnetic field as a function of the Lorentz force resulting from the alternating current. A plurality of such multi-layer gratings may be disposed across a length of the resonator to provide greater dynamic range and/or accommodate fabrication tolerances.

  20. Ovenized microelectromechanical system (MEMS) resonator

    SciTech Connect

    Olsson, Roy H; Wojciechowski, Kenneth; Kim, Bongsang

    2014-03-11

    An ovenized micro-electro-mechanical system (MEMS) resonator including: a substantially thermally isolated mechanical resonator cavity; a mechanical oscillator coupled to the mechanical resonator cavity; and a heating element formed on the mechanical resonator cavity.

  1. MemAxes Visualization Software

    Energy Science and Technology Software Center

    2014-08-28

    Hardware advancements such as Intel's PEBS and AMD's IBS, as well as software developments such as the perf_event API in Linux have made available the acquisition of memory access samples with performance information. MemAxes is a visualization and analysis tool for memory access sample data. By mapping the samples to their associated code, variables, node topology, and application dataset, MemAxes provides intuitive views of the data.

  2. (To discuss the dissemination of improved energy-efficient cookstoves in Guatemala, Guatemala City, Guatemala, June 5--7, 1989): Foreign trip report

    SciTech Connect

    Brown, M.A.

    1989-06-12

    Oak Ridge National Laboratory (ORNL) has a subcontract with Meso American Study Center on Appropriate Technology (CEMAT) to undertake a technology transfer project involving improved energy-efficient cookstoves in Guatemala. Meetings were held with Mr. Edgardo Caceres, Executive Director of CEMAT; with members of his staff; and CEMAT's subcontractor, Merca Plan, in order to assess the project's progress.

  3. Guatemala accelerates efforts to attract foreign E and D capital

    SciTech Connect

    1997-01-20

    The Guatemalan government, headed by recently elected President Alvaro Arzu, has embarked on an ambitious program of petroleum exploration and development with the goal of producing 40,000 b/d by 2000. Production averaged 16,000 b/d last fall and was to be raised to 25,000 b/d by year end 1996. Oil and gas exploration began in Guatemala in the 1920s, but production is currently limited to two regions in the Peten basin in northeastern Guatemala. Officials at the Ministry of Energy and Mines aim to encourage comprehensive evaluation of the Peten basin as well as exploration of the Amatique basin in southeastern Guatemala and the Pacific basin on the country`s Pacific coast. The paper describes the Peten basin, the Amatique basin, the Pacific basin, bidding, and contract rules.

  4. Microelectromechanical (MEM) thermal actuator

    DOEpatents

    Garcia, Ernest J.; Fulcher, Clay W. G.

    2012-07-31

    Microelectromechanical (MEM) buckling beam thermal actuators are disclosed wherein the buckling direction of a beam is constrained to a desired direction of actuation, which can be in-plane or out-of-plane with respect to a support substrate. The actuators comprise as-fabricated, linear beams of uniform cross section supported above the substrate by supports which rigidly attach a beam to the substrate. The beams can be heated by methods including the passage of an electrical current through them. The buckling direction of an initially straight beam upon heating and expansion is controlled by incorporating one or more directional constraints attached to the substrate and proximal to the mid-point of the beam. In the event that the beam initially buckles in an undesired direction, deformation of the beam induced by contact with a directional constraint generates an opposing force to re-direct the buckling beam into the desired direction. The displacement and force generated by the movement of the buckling beam can be harnessed to perform useful work, such as closing contacts in an electrical switch.

  5. Electrostatic MEMS devices with high reliability

    DOEpatents

    Goldsmith, Charles L; Auciello, Orlando H; Sumant, Anirudha V; Mancini, Derrick C; Gudeman, Chris; Sampath, Suresh; Carlilse, John A; Carpick, Robert W; Hwang, James

    2015-02-24

    The present invention provides for an electrostatic microelectromechanical (MEMS) device comprising a dielectric layer separating a first conductor and a second conductor. The first conductor is moveable towards the second conductor, when a voltage is applied to the MEMS device. The dielectric layer recovers from dielectric charging failure almost immediately upon removal of the voltage from the MEMS device.

  6. Inertial measurement unit using rotatable MEMS sensors

    DOEpatents

    Kohler, Stewart M.; Allen, James J.

    2007-05-01

    A MEM inertial sensor (e.g. accelerometer, gyroscope) having integral rotational means for providing static and dynamic bias compensation is disclosed. A bias compensated MEM inertial sensor is described comprising a MEM inertial sense element disposed on a rotatable MEM stage. A MEM actuator drives the rotation of the stage between at least two predetermined rotational positions. Measuring and comparing the output of the MEM inertial sensor in the at least two rotational positions allows for both static and dynamic bias compensation in inertial calculations based on the sensor's output. An inertial measurement unit (IMU) comprising a plurality of independently rotatable MEM inertial sensors and methods for making bias compensated inertial measurements are disclosed.

  7. Inertial measurement unit using rotatable MEMS sensors

    DOEpatents

    Kohler, Stewart M.; Allen, James J.

    2006-06-27

    A MEM inertial sensor (e.g. accelerometer, gyroscope) having integral rotational means for providing static and dynamic bias compensation is disclosed. A bias compensated MEM inertial sensor is described comprising a MEM inertial sense element disposed on a rotatable MEM stage. A MEM actuator for drives the rotation of the stage between at least two predetermined rotational positions. Measuring and comparing the output of the MEM inertial sensor in the at least two rotational positions allows, for both static and dynamic bias compensation in inertial calculations based on the sensor's output. An inertial measurement unit (IMU) comprising a plurality of independently rotatable MEM inertial sensors and methods for making bias compensated inertial measurements are disclosed.

  8. New Guatemala law tries to attract new explorers

    SciTech Connect

    Not Available

    1984-02-01

    With only 6,280 bopd of production and reserves of only 13 million barrels, Guatemala's 25,200 bpd thirst has forced the country to rewrite its petroleum law. Among pluses in the new law are full-cost recovery and prices based on world levels. However, the stiff royalty and no provision for neutral arbitration are significant minuses.

  9. W-Coating for MEMS

    SciTech Connect

    Fleming, J.G.; Mani, S.S.; Sniegowski, J.J.

    1999-07-08

    The integration of miniaturized mechanical components has spawned a new technology known as microelectromechanical systems (MEMS). Surface micromachining, defined as the fabrication of micromechanical structures from deposited thin films, is one of the core technological processes underlying MEMS. Surface micromachined structures have a large ratio of surface area to volume which makes them particularly vulnerable to adhesion to the substrate or adjacent structures during release or in use--a problem is called stiction. Since microactuators can have surfaces in normal or sliding contact, function and wear are critical issues for reliable operation of MEMS devices. Surface modifications are needed to reduce adhesion and friction in micromechanical structures. In this paper, we will present a process used to selectively coat MEMS devices with Tungsten using a CVD (Chemical Vapor Deposition) process. We will discuss the effect of wet and vapor phase cleans along with different process variables. Endurance of the W coating is important, especially in applications where wear due to repetitive contacts with the film may occur. Further, tungsten is hard and chemically inert, Tungsten CVD is used in the integrated-circuit industry, which makes this, approach manufacturable.

  10. Optically transduced MEMS magnetometer (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    Optically transduced MEMS magnetometer Title: Optically transduced MEMS magnetometer MEMS magnetometers with optically transduced resonator displacement are described herein. Improved sensitivity, crosstalk reduction, and extended dynamic range may be achieved with devices including a deflectable resonator suspended from the support, a first grating extending from the support and disposed over the resonator, a pair of drive electrodes to drive an alternating current through the resonator, and a

  11. What Is MEMS? | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Engineer Chris Keimel Introduces MEMS Technology Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) Engineer Chris Keimel Introduces MEMS Technology GE engineer Chris Keimel gives a brief overview of microelectromechanical systems (MEMS), tiny devices that control the electronics and sensing capability in many of today's

  12. MEMS packaging efforts at Sandia National Laboratories.

    SciTech Connect

    Custer, Jonathan Sloane

    2003-02-01

    Sandia National Laboratories has programs covering a broad range of MEMS technologies from LIGA to bulk to surface micromachining. These MEMS technologies are being considered for an equally broad range of applications, including sensors, actuators, optics, and microfluidics. As these technologies have moved from the research to the prototype product stage, packaging has been required to develop new capabilities to integrated MEMS and other technologies into functional microsystems. This paper discusses several of Sandia's MEMS packaging efforts, focusing mainly on inserting Sandia's SUMMIT V (5-level polysilicon) surface micromachining technology into fieldable microsystems.

  13. Sources of stress gradients in electrodeposited Ni MEMS. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Title: Sources of stress gradients in electrodeposited Ni MEMS. The ability of future integrated metal-semiconductor micro-systems such as RF MEMS to perform highly complex ...

  14. The Sandia MEMS Passive Shock Sensor : FY08 failure analysis...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: The Sandia MEMS Passive Shock Sensor : FY08 failure analysis activities. Citation Details In-Document Search Title: The Sandia MEMS Passive Shock Sensor : FY08 ...

  15. MEMS based pyroelectric thermal energy harvester (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    Data Explorer Search Results MEMS based pyroelectric thermal energy harvester Title: MEMS based pyroelectric thermal energy harvester A pyroelectric thermal energy harvesting ...

  16. The Sandia MEMS Passive Shock Sensor : dormancy and aging. (Technical...

    Office of Scientific and Technical Information (OSTI)

    The Sandia MEMS Passive Shock Sensor : dormancy and aging. Citation Details In-Document Search Title: The Sandia MEMS Passive Shock Sensor : dormancy and aging. This report ...

  17. Development of MEMS based pyroelectric thermal energy harvesters...

    Office of Scientific and Technical Information (OSTI)

    Development of MEMS based pyroelectric thermal energy harvesters Citation Details In-Document Search Title: Development of MEMS based pyroelectric thermal energy harvesters The ...

  18. Science-based MEMS reliability methodology. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Science-based MEMS reliability methodology. Citation Details In-Document Search Title: Science-based MEMS reliability methodology. No abstract prepared. Authors: Walraven, Jeremy ...

  19. Challenges in the Packaging of MEMS

    SciTech Connect

    Malshe, A.P.; Singh, S.B.; Eaton, W.P.; O'Neal, C.; Brown, W.D.; Miller, W.M.

    1999-03-26

    The packaging of Micro-Electro-Mechanical Systems (MEMS) is a field of great importance to anyone using or manufacturing sensors, consumer products, or military applications. Currently much work has been done in the design and fabrication of MEMS devices but insufficient research and few publications have been completed on the packaging of these devices. This is despite the fact that packaging is a very large percentage of the total cost of MEMS devices. The main difference between IC packaging and MEMS packaging is that MEMS packaging is almost always application specific and greatly affected by its environment and packaging techniques such as die handling, die attach processes, and lid sealing. Many of these aspects are directly related to the materials used in the packaging processes. MEMS devices that are functional in wafer form can be rendered inoperable after packaging. MEMS dies must be handled only from the chip sides so features on the top surface are not damaged. This eliminates most current die pick-and-place fixtures. Die attach materials are key to MEMS packaging. Using hard die attach solders can create high stresses in the MEMS devices, which can affect their operation greatly. Low-stress epoxies can be high-outgassing, which can also affect device performance. Also, a low modulus die attach can allow the die to move during ultrasonic wirebonding resulting to low wirebond strength. Another source of residual stress is the lid sealing process. Most MEMS based sensors and devices require a hermetically sealed package. This can be done by parallel seam welding the package lid, but at the cost of further induced stress on the die. Another issue of MEMS packaging is the media compatibility of the packaged device. MEMS unlike ICS often interface with their environment, which could be high pressure or corrosive. The main conclusion we can draw about MEMS packaging is that the package affects the performance and reliability of the MEMS devices. There is a

  20. Research and Development of Non-Spectroscopic MEMS-Based Sensor Arrays for

    Office of Scientific and Technical Information (OSTI)

    Targeted Gas Detection (Technical Report) | SciTech Connect Research and Development of Non-Spectroscopic MEMS-Based Sensor Arrays for Targeted Gas Detection Citation Details In-Document Search Title: Research and Development of Non-Spectroscopic MEMS-Based Sensor Arrays for Targeted Gas Detection Authors: Loui, A ; McCall, S K ; Zumstein, J M Publication Date: 2012-11-21 OSTI Identifier: 1059450 Report Number(s): LLNL-TR-606593 DOE Contract Number: W-7405-ENG-48 Resource Type: Technical

  1. Improved Design of Optical MEMS Using the SUMMiT Fabrication Process

    SciTech Connect

    Michalicek, M.A.; Comtois, J.H.; Barron, C.C.

    1997-12-31

    This paper describes the design and fabrication of optical Microelectromechanical Systems (MEMS) devices using the Sandia Ultra planar Multilevel MEMS Technology (SUMMiT) fabrication process. This state of the art process, offered by Sandia National Laboratories, provides unique and very advantageous features which make it ideal for optical devices. This enabling process permits the development of micromirror devices with near ideal characteristics which have previously been unrealizable in standard polysilicon processes. This paper describes such characteristics as elevated address electrodes, individual address wiring beneath the device, planarized mirror surfaces, unique post-process metallization, and the best active surface area to date.

  2. MEMS3DMODELERV1.0

    Energy Science and Technology Software Center

    2001-10-30

    The MEMS 3 D Modeler is a software package that creates 3D CAD solid models from 2D layout masks and a MEMS process definition. The solid models may be generated in either the ACIS SAT or IGES format. The result is an accurate representation that may be used for visualization or FEA analysis

  3. Development of MEMS photoacoustic spectroscopy

    SciTech Connect

    Robinson, Alex Lockwood; Eichenfield, Matthew S.; Griffin, Benjamin; Harvey, Heidi Alyssa; Nielson, Gregory N.; Okandan, Murat; Langlois, Eric; Resnick, Paul James; Shaw, Michael J.; Young, Ian; Givler, Richard C.; Reinke, Charles M.

    2014-01-01

    After years in the field, many materials suffer degradation, off-gassing, and chemical changes causing build-up of measurable chemical atmospheres. Stand-alone embedded chemical sensors are typically limited in specificity, require electrical lines, and/or calibration drift makes data reliability questionable. Along with size, these "Achilles' heels" have prevented incorporation of gas sensing into sealed, hazardous locations which would highly benefit from in-situ analysis. We report on development of an all-optical, mid-IR, fiber-optic based MEMS Photoacoustic Spectroscopy solution to address these limitations. Concurrent modeling and computational simulation are used to guide hardware design and implementation.

  4. Micro electromechanical systems (MEMS) for mechanical engineers

    SciTech Connect

    Lee, A. P., LLNL

    1996-11-18

    The ongoing advances in Microelectromechanical Systems (MEMS) are providing man-kind the freedom to travel to dimensional spaces never before conceivable. Advances include new fabrication processes, new materials, tailored modeling tools, new fabrication machines, systems integration, and more detailed studies of physics and surface chemistry as applied to the micro scale. In the ten years since its inauguration, MEMS technology is penetrating industries of automobile, healthcare, biotechnology, sports/entertainment, measurement systems, data storage, photonics/optics, computer, aerospace, precision instruments/robotics, and environment monitoring. It is projected that by the turn of the century, MEMS will impact every individual in the industrial world, totaling sales up to $14 billion (source: System Planning Corp.). MEMS programs in major universities have spawned up all over the United States, preparing the brain-power and expertise for the next wave of MEMS breakthroughs. It should be pointed out that although MEMS has been initiated by electrical engineering researchers through the involvement of IC fabrication techniques, today it has evolved such that it requires a totally multi-disciplinary team to develop useful devices. Mechanical engineers are especially crucial to the success of MEMS development, since 90% of the physical realm involved is mechanical. Mechanical engineers are needed for the design of MEMS, the analysis of the mechanical system, the design of testing apparatus, the implementation of analytical tools, and the packaging process. Every single aspect of mechanical engineering is being utilized in the MEMS field today, however, the impact could be more substantial if more mechanical engineers are involved in the systems level designing. In this paper, an attempt is made to create the pathways for a mechanical engineer to enter in the MEMS field. Examples of application in optics and medical devices will be used to illustrate how mechanical

  5. MEMS reliability in shock environments

    SciTech Connect

    TANNER,DANELLE M.; WALRAVEN,JEREMY A.; HELGESEN,KAREN SUE; IRWIN,LLOYD W.; BROWN,FREDERICK A.; SMITH,NORMAN F.; MASTERS,NATHAN

    2000-02-09

    In order to determine the susceptibility of the MEMS (MicroElectroMechanical Systems) devices to shock, tests were performed using haversine shock pulses with widths of 1 to 0.2 ms in the range from 500g to 40,000g. The authors chose a surface-micromachined microengine because it has all the components needed for evaluation: springs that flex, gears that are anchored, and clamps and spring stops to maintain alignment. The microengines, which were unpowered for the tests, performed quite well at most shock levels with a majority functioning after the impact. Debris from the die edges moved at levels greater than 4,000g causing shorts in the actuators and posing reliability concerns. The coupling agent used to prevent stiction in the MEMS release weakened the die-attach bond, which produced failures at 10,000g and above. At 20,000g the authors began to observe structural damage in some of the thin flexures and 2.5-micron diameter pin joints. The authors observed electrical failures caused by the movement of debris. Additionally, they observed a new failure mode where stationary comb fingers contact the ground plane resulting in electrical shorts. These new failure were observed in the control group indicating that they were not shock related.

  6. Sandia National Laboratories: MicroElectroMechanical Systems (MEMS)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    MicroElectroMechanical Systems (MEMS) MEMS The MEMS Technology Department at Sandia National Laboratories conducts research and development for advanced microelectromechanical systems that push the technology envelope for national security applications Custom Solutions Inertial & Pressure Sensors Inertial sensors have emerged as the most significant MEMS product in consumer electronics. Sandia develops MEMS inertial sensors with an emphasis on nuclear and space environments where radiation

  7. Design of Surface Micromachined Compliant MEMS

    SciTech Connect

    Joe Anthony Bradley

    2002-12-31

    The consideration of compliant mechanisms as Microelectromechanical Systems (MEMS) is the focus of this research endeavor. MEMS are micron to millimeter devices that combine electrical, mechanical, and information processing capabilities on the same device. These MEMS need some mechanical motion or parts that move relative to each other. This relative motion, using multiple parts, is not desired because of the assembly requirement and the friction introduced. Compliant devices limits or eliminates friction and the need for multi-component assembly. Compliant devices improve designs by creating single piece mechanisms. The purpose of this research is to validate surface micromachining as a viable fabrication process for compliant MEMS designs. Specifically, this research has sought to fabricate a micro-compliant gripper and a micro-compliant clamp to illustrate the process. While other researchers have created compliant MEMs, most have used comb-drive actuation methods and bulk micromachining processes. This research focused on fully-compliant devices that use device flexibility for motion and actuation. Validation of these compliant MEMS is achieved by structural optimization of device design and functional performance testing. This research contributes to the ongoing research in MEMS by evaluating the potential of using surface micromachining as a process for fabricating compliant micro-mechanisms.

  8. Design of Surface micromachined Compliant MEMS

    SciTech Connect

    Joe Anthony Bradley

    2002-08-01

    The consideration of compliant mechanisms as Microelectromechanical Systems (MEMS) is the focus of this research endeavor. MEMS are micron to millimeter devices that combine electrical, mechanical, and information processing capabilities on the same device. These MEMS need some mechanical motion or parts that move relative to each other. This relative motion, using multiple parts, is not desired because of the assembly requirement and the friction introduced. Compliant devices limits or eliminates friction and the need for multi-component assembly. Compliant devices improve designs by creating single piece mechanisms. The purpose of this research is to validate surface micromachining as a viable fabrication process for compliant MEMS designs. Specifically, this research has sought to fabricate a micro-compliant gripper and a micro-compliant clamp to illustrate the process. While other researchers have created compliant MEMS, most have used comb-drive actuation methods and bulk micromachining processes. This research focuses on fully-compliant devices that use device flexibility for motion and actuation. Validation of these compliant MEMS is achieved by structural optimization of device design and functional performance testing. This research contributes to the ongoing research in MEMS by evaluating the potential of using surface micromachining as a process for fabricating compliant micro-mechanisms.

  9. Transverse extension of Guatemala active margin: implications for accretion

    SciTech Connect

    McMillen, K.J.

    1987-05-01

    The inner trench wall of the Middle America Trench off Guatemala does not show evidence of accretion, based on DSDP Legs 67 and 84. The presence of normal faults on the lower inner trench slope has resulted in various subsidence models for the margin. Fault traces would be expected to trend parallel to the margin (northwest-southeast) if margin subsidence had occurred. Instead, the faults trend north-south and occur in groups of faults downdropped to the east and to the west. The faults do not seem to be related to margin subsidence but rather to previously proposed Cenozoic Central American rifting. The rifting resulted from crustal bending as the Central American block rounded southern Mexico during differential North American/Caribbean plate motion. The rifts, which extend nearly to the trench axis, underlie the San Jose submarine canyon and align with the Guatemala City graben. Possible east-west accommodation zones, between fault zones that dip in opposite directions, exist near the shelf edge. These accommodation zones may have formed along lines of weakness where oceanic crust was previously emplaced into the margin during or prior to the Eocene. These rifts show that compressional and extension features can occur simultaneously with underthrusting on active margins.

  10. Si-based RF MEMS components.

    SciTech Connect

    Stevens, James E.; Nordquist, Christopher Daniel; Baker, Michael Sean; Fleming, James Grant; Stewart, Harold D.; Dyck, Christopher William

    2005-01-01

    Radio frequency microelectromechanical systems (RF MEMS) are an enabling technology for next-generation communications and radar systems in both military and commercial sectors. RF MEMS-based reconfigurable circuits outperform solid-state circuits in terms of insertion loss, linearity, and static power consumption and are advantageous in applications where high signal power and nanosecond switching speeds are not required. We have demonstrated a number of RF MEMS switches on high-resistivity silicon (high-R Si) that were fabricated by leveraging the volume manufacturing processes available in the Microelectronics Development Laboratory (MDL), a Class-1, radiation-hardened CMOS manufacturing facility. We describe novel tungsten and aluminum-based processes, and present results of switches developed in each of these processes. Series and shunt ohmic switches and shunt capacitive switches were successfully demonstrated. The implications of fabricating on high-R Si and suggested future directions for developing low-loss RF MEMS-based circuits are also discussed.

  11. 05670_MEMS | netl.doe.gov

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fabry-Perot MEMS Accelerometers for Advanced Seismic Imaging Last Reviewed 1212015 DE-FC26-09NT0005670 Goal The objective of this project is to build an accelerometer and...

  12. RF MEMS reconfigurable triangular patch antenna.

    SciTech Connect

    Nordquist, Christopher Daniel; Christodoulou, Christos George; Feldner, Lucas Matthew

    2005-01-01

    A Ka-band RF MEMS enabled frequency reconfigurable triangular microstrip patch antenna has been designed for monolithic integration with RF MEMS phase shifters to demonstrate a low-cost monolithic passive electronically scanned array (PESA). This paper introduces our first prototype reconfigurable triangular patch antenna currently in fabrication. The aperture coupled patch antenna is fabricated on a dual-layer quartz/alumina substrate using surface micromachining techniques.

  13. RF MEMS reconfigurable triangular patch antenna.

    SciTech Connect

    Christodoulou, Christos George; Nordquist, Christopher Daniel; Feldner, Lucas Matthew

    2005-07-01

    A Ka-band RF MEMS enabled frequency reconfigurable triangular microstrip patch antenna has been designed for monolithic integration with RF MEMS phase shifters to demonstrate a low-cost monolithic passive electronically scanned array (PESA). This paper introduces our first prototype reconfigurable triangular patch antenna currently in fabrication. The aperture coupled patch antenna is fabricated on a dual-layer quartz/alumina substrate using surface micromachining techniques.

  14. Future challenges for MEMS failure analysis.

    SciTech Connect

    Walraven, Jeremy Allen

    2003-07-01

    MEMS processes and components are rapidly changing in device design, processing, and, most importantly, application. This paper will discuss the future challenges faced by the MEMS failure analysis as the field of MEMS (fabrication, component design, and applications) grows. Specific areas of concern for the failure analyst will also be discussed. MEMS components are extremely diverse in their application and function. Failure analysts will have to be equally diverse and/or multidisciplinary in their analysis of these devices. Many tools and techniques developed from the IC industry have been used for MEMS FA, but more MEMS-specific FA toolsets have to be developed for diagnosis of these failure mechanisms. Many of the devices discussed in this paper have global issues associated with failure analysis. Many non destructive techniques must be developed to assess the failure mechanisms. Tools and techniques that can perform these functions on a larger scale will also be required. To achieve this, industry will have to work with academia and government institutions to create the knowledge base required for tool and technique development for global and local defect localization.

  15. Challenges in the Packaging of MEMS

    SciTech Connect

    BROWN, WILLIAM D.; EATON, WILLIAM P.; MALSHE, AJAY P.; MILLER, WILLIAM M.; O'NEAL, CHAD; SINGH, SUSHILA B.

    1999-09-24

    Microelectromechanical Systems (MEMS) packaging is much different from conventional integrated circuit (IC) packaging. Many MEMS devices must interface to the environment in order to perform their intended function, and the package must be able to facilitate access with the environment while protecting the device. The package must also not interfere with or impede the operation of the MEMS device. The die attachment material should be low stress, and low outgassing, while also minimizing stress relaxation overtime which can lead to scale factor shifts in sensor devices. The fabrication processes used in creating the devices must be compatible with each other, and not result in damage to the devices. Many devices are application specific requiring custom packages that are not commercially available. Devices may also need media compatible packages that can protect the devices from harsh environments in which the MEMS device may operate. Techniques are being developed to handle, process, and package the devices such that high yields of functional packaged parts will result. Currently, many of the processing steps are potentially harmful to MEMS devices and negatively affect yield. It is the objective of this paper to review and discuss packaging challenges that exist for MEMS systems and to expose these issues to new audiences from the integrated circuit packaging community.

  16. Results of geothermal gradient core hole TCB-1, Tecuamburro volcano geothermal site, Guatemala, Central America

    SciTech Connect

    Adams, A.I.; Chipera, S.; Counce, D.; Gardner, J.; Goff, S.; Goff, F.; Heiken, G.; Laughlin, A.W.; Musgrave, J.; Trujillo, P.E. Jr. ); Aycinena, S.; Martinelli, L. ); Castaneda, O.; Revolorio, M.; Roldan, A. . Inst. Nacional de Electrificacion); D

    1992-02-01

    Results of geological, volcanological, hydrogeochemical, and geophysical field studies conducted in 1988 and 1989 at the Tecuamburro volcano geothermal site in Guatemala indicated that there is a substantial shallow heat source beneath the area of youngest volcanism. To obtain information on subsurface temperatures and temperature gradients, stratigraphy, hydrothermal alteration, fracturing, and possible inflows of hydrothermal fluids, a geothermal gradient core hole (TCB-1) was drilled to 808 m low on the northern flank of the Tecuamburro volcano Complex, 300 km south of a 300-m-diameter phreatic crater, Laguna Ixpaco, dated at 2,910 years. Gases from acid-sulfate springs near Laguna Ixpaco consistently yield maximum estimated subsurface temperatures of 250--300{degrees}C. The temperature versus depth curve from TCB-1 does not show isothermal conditions and the calculated thermal gradients from 500--800 m is 230{degrees}C/km. Bottom hole temperature is 238{degrees}C. Calculated heat flow values are nearly 9 heat flow units (HFU). The integration of results from the TCB-1 gradient core hole with results from field studies provides strong evidence that the Tecuamburro area holds great promise for containing a commercial geothermal resource.

  17. Tecuamburro Volcano, Guatemala geothermal gradient core hole drilling, operations, and preliminary results

    SciTech Connect

    Goff, S.; Heiken, G.; Goff, F.; Gardner, J. ); Duffield, W. ); Martinelli, L.; Aycinena, S. ); Castaneda, O. . Inst. Nacional de Electrificacion)

    1990-01-01

    A geothermal gradient core hole (TCB-1) was drilled to a depth of 700+ m at the Tecuamburro geothermal site, Guatemala during February and March, 1990. The core hole is located low on the northern flank of the Tecuamburro Volcano complex. Preliminary analysis of cores (>98% core recovery) indicates that the hydrothermal system may be centered in the 4-km-diameter Chupadero Crater, which has been proposed as the source of pyroxene pumice deposits in the Tecuamburro area. TCB-1 is located 300 m south of a 300-m-diameter phreatic crater, Laguna Ixpaco; the core hole penetrates the thin edge of a tuff ring surrounding Ixpaco and zones of hydrothermal brecciation within the upper 150 m may be related to the phreatic blast, dated at 2,910 {sup 14}C years. At the time of this writing, the unequilibrated temperature at a depth of 570m was 180{degree}C. Data on fracturing, permeability, hydrothermal alteration, and temperature will be presented. 3 refs., 3 figs.

  18. The macroeconomic module of the Energy Policy Evaluation Model of Guatemala

    SciTech Connect

    Booth, S.R. ); Cancino, R. )

    1991-08-01

    This report describes the methodology and results of the macroeconomic module of the Energy Policy Evaluation Model of Guatemala (MEPEG). This effort was conducted jointly by the Ministry of Energy and Mines of Guatemala and Los Alamos National Laboratory under the Central American Energy and Resources Project of Los Alamos, funded by the US Agency for International Development. The data, theory, empirical specification, and simulation results of the macroeconomic module are described. 10 refs., 2 figs., 6 tabs.

  19. Electrical power systems (Guatemala). Electric power generation and distribution equipment, March 1991. Export trade information

    SciTech Connect

    Not Available

    1991-03-01

    The article analyzes the electrical power generation and distribution equipment market in Guatemala and contains the following subtopics: market assessment, competitive situation, market access, trade promotion opportunities, best sales prospects, and statistical data. The total market demand of electrical power generation and distribution equipment and materials in Guatemala increased from US $19.0 million in 1987 to $24.8 million in 1988 (30.5 percent).

  20. Guatemala switch to crude saves over $1 million a month

    SciTech Connect

    de Biasi, V.

    1980-03-01

    In a two-step program designed to reduce fuel costs and improve operating efficiency, Empresa Electrica de Guatemala has modified two General Electric PG 5341 gas turbines at Laguna to run on crude oil and installed heat recovery equipment for repowering two existing steam turbines. The gas turbines, nominally rated at around 19,000 kW for base load operation at 70/sup 0/F average ambient temperature and 4000 feet altitude, were installed in 1977-78 as a base load backup to hydro power during the dry season. Original plan was to put them into immediate service as simple cycle units and then convert to combined cycle operation. Priorities were shifted to switch over from distillate to crude oil firing before going ahead with the combined cycle istallation. Their economic evaluation showed the initial investment would be paid off in a few months by the savings in fuel costs.

  1. The Sandia MEMS passive shock sensor : FY08 design summary. ...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: The Sandia MEMS passive shock sensor : FY08 design summary. Citation Details In-Document Search Title: The Sandia MEMS passive shock sensor : FY08 design summary. ...

  2. Sandia National Laboratories SUMMiT VTM MEMS Process: Mature...

    Office of Scientific and Technical Information (OSTI)

    SUMMiT VTM MEMS Process: Mature Technology with an Exciting Future. Citation Details In-Document Search Title: Sandia National Laboratories SUMMiT VTM MEMS Process: Mature ...

  3. Combined photonics and MEMs function demonstration

    SciTech Connect

    Blum, O.; Warren, M.E.; Hou, H.Q.; Choquette, K.D.; Rogers, M.S.; Sniegowski, J.J. [Sandia National Labs., Albuquerque, NM (United States); Carson, R.F. [Microoptical Devices, Inc., Albuquerque, NM (United States)

    1998-01-01

    The authors have recently demonstrated two prototypes where photonics and microelectromechanical system (MEMs) technologies have been integrated to show proof-of-principle functionality for weapon surety functions. These activities are part of a program which is exploring the miniaturization of electromechanical components for making weapon systems safer. Such miniaturization can lead to a low-cost, small, high-performance ``systems-on-a-chip``, and have many applications ranging from advanced military systems to large-volume commercial markets like automobiles, rf or land-based communications networks and equipment, or commercial electronics. One of the key challenges in realization of the microsystem is integration of several technologies including digital electronics; analog and rf electronics, optoelectronics (light emitting and detecting devices and circuits), sensors and actuators, and advanced packaging technologies. In this work the authors describe efforts in integrating MEMs and photonic functions and the fabrication constraints on both system components. Here, they discuss two examples of integration of MEMs and a photonic device. In the first instance, a MEMs locking device pin is driven by a voltage generated by photovoltaic cells connected in series, which are driven by a laser. In the second case, a VCSEL emitting at 1.06 {micro}m is packaged together with a metallized MEMs shutter. By appropriate alignment to the opening in the shutter, the VCSEL is turned on and off by the movement of the Si chopper wheel.

  4. Release Resistant Electrical Interconnections For Mems Devices

    DOEpatents

    Peterson, Kenneth A.; Garrett, Stephen E.; Reber, Cathleen A.

    2005-02-22

    A release resistant electrical interconnection comprising a gold-based electrical conductor compression bonded directly to a highly-doped polysilicon bonding pad in a MEMS, IMEMS, or MOEMS device, without using any intermediate layers of aluminum, titanium, solder, or conductive adhesive disposed in-between the conductor and polysilicon pad. After the initial compression bond has been formed, subsequent heat treatment of the joint above 363 C creates a liquid eutectic phase at the bondline comprising gold plus approximately 3 wt % silicon, which, upon re-solidification, significantly improves the bond strength by reforming and enhancing the initial bond. This type of electrical interconnection is resistant to chemical attack from acids used for releasing MEMS elements (HF, HCL), thereby enabling the use of a "package-first, release-second" sequence for fabricating MEMS devices. Likewise, the bond strength of an Au--Ge compression bond may be increased by forming a transient liquid eutectic phase comprising Au-12 wt % Ge.

  5. Failure analysis issues in microelectromechanical systems (MEMS).

    SciTech Connect

    Walraven, Jeremy Allen

    2005-07-01

    Failure analysis and device characterization of MEMS components are critical steps in understanding the root causes of failure and improving device performance. At the wafer and die level these tasks can be performed with little or no sample preparation. Larger challenges occur after fabrication when the device is packaged, capped, sealed, or otherwise obstructed from view. The challenges and issues of MEMS failure analysis lie in identifying the root cause of failure for these packaged, capped, and sealed devices without perturbing the device or its immediate environment. Novel methods of gaining access to the device or preparing the device for analysis are crucial to accurately determining the root cause of failure. This paper will discuss issues identified in performing root cause failure analysis of packaged MEMS devices, as well as the methods employed to analyze them.

  6. IC-Compatible Technologies for Optical MEMS

    SciTech Connect

    Krygowski, T.W.; Sniegowski, J.J.

    1999-04-30

    Optical Micro Electro Mechanical Systems (Optical MEMS) Technology holds the promise of one-day producing highly integrated optical systems on a common, monolithic substrate. The choice of fabrication technology used to manufacture Optical MEMS will play a pivotal role in the size, functionality and ultimately the cost of optical Microsystems. By leveraging the technology base developed for silicon integrated circuits, large batches of routers, emitters, detectors and amplifiers will soon be fabricated for literally pennies per part. In this article we review the current status of technologies used for Optical MEMS, as well as fabrication technologies of the future, emphasizing manufacturable surface micromachining approaches to producing reliable, low-cost devices for optical communications applications.

  7. MEMS reliability: The challenge and the promise

    SciTech Connect

    Miller, W.M.; Tanner, D.M.; Miller, S.L.; Peterson, K.A.

    1998-05-01

    MicroElectroMechanical Systems (MEMS) that think, sense, act and communicate will open up a broad new array of cost effective solutions only if they prove to be sufficiently reliable. A valid reliability assessment of MEMS has three prerequisites: (1) statistical significance; (2) a technique for accelerating fundamental failure mechanisms, and (3) valid physical models to allow prediction of failures during actual use. These already exist for the microelectronics portion of such integrated systems. The challenge lies in the less well understood micromachine portions and its synergistic effects with microelectronics. This paper presents a methodology addressing these prerequisites and a description of the underlying physics of reliability for micromachines.

  8. Introduction to applications and industries for Microelectromechanical Systems (MEMS).

    SciTech Connect

    Walraven, Jeremy Allen

    2003-07-01

    Microelectromechanical Systems (MEMS) have gained acceptance as viable products for many commercial and government applications. MEMS are currently being used as displays for digital projection systems, sensors for airbag deployment systems, inkjet print head systems, and optical routers. This paper will discuss current and future MEMS applications. What are MEMS? MEMS are typically defined as microscopic devices designed, processed, and used to interact or produce changes within a local environment. A mechanical, electrical, or chemical stimulus can be used to create a mechanical, electrical, or chemical response in a local environment. These smaller, more sophisticated devices that think, act, sense, and communicate are replacing their bulk counterparts in many traditional applications.

  9. Petroleum geology of Pacific margin of Central America and northern South America, from Guatemala to Ecuador

    SciTech Connect

    Scrutton, M.E.; Escalante, G.F.

    1986-07-01

    Exploration for hydrocarbons along the Pacific margin of Central America and northern South America has been limited and spasmodic. Less than 100 exploration wells have been drilled, with nearly 50 of these being in the Santa Elena, Progreso, and Guayas basins in Ecuador. Shows have been reported in some wells, and a few oil seeps are known. The only commercial production established to date has been from the Santa Elena Peninsula in Ecuador in the extreme south of the study area. Understanding of the geology in this part of the continental margin is incomplete at best. This paper reviews present-day knowledge in an attempt to define the sedimentary basins better, to characterize their structure and stratigraphy, and to assess their petroleum prospects. The area of continental margin reviewed is to the north, located northwest of the trench system where oceanic crust of the Cocos plate subducts under the Caribbean plate, and to the south, where the northern part of the Nazca plate collides with the South American plate. This plate tectonic setting forms the framework on which local structural and sedimentary events have created a series of relatively small trench-slope and forearc basins in what is now the coastal plain and adjacent offshore area of Central and South America, south or west of a line of mountain ranges with active volcanism. Sedimentary fill is generally of Tertiary age. The basins and subbasins recognized and described include: in Ecuador - Guayas, Santa Elena, Progreso, Valdivia, Bajo Grande, Manta, Muisne-Esmeraldas, and Borbon; in Colombia - Choco-Pacific; in Panama - Gulf of Panama basin complex (Santiago, Tonosi, Sambu), and Burica-Chiriqui; in Costa Rica - Terraba and Coronado/Tempisque; in Nicaragua - San Juan del Sur; and in the Honduras, El Salvador, and Guatemala - the Pacific coastal basin.

  10. (Energy efficiency improvement studies for Costa Rica and Guatemala)

    SciTech Connect

    Waddle, D.B.

    1990-05-30

    I travelled to San Jose, Cost Rica, on May 20, 1990 to report on the progress of the Integrated Power Sector Efficiency Analysis Project to the Instituto Costarrincense de Electricidad, and to USAID/San Jose. I also discussed the progress and plans for the CONELECTRICAS Small Hydroelectric Project supported by ORNL through the Renewable Energy Applications and Training Project. Both projects are proceeding on schedule. ORNL will complete further supply side analysis after comments are submitted by ICE, with respect to the information provided on this visit. The CONELECTRICAS project will require further ORNL input to assist in optimization of equipment selection and to perform the required financial and economic cost analyses. I travelled to Guatemala City on May 22, 1990. I met with Instituto Nacional de Electricacion (INDE) to discuss the findings and recommendations of the Electric Power Utility Efficiency Improvement Study undertaken in February, 1990. I also met with Mario Funes to discuss future ORNL assistance to ROCAP in support of the CARES project as well as other ROCAP energy initiatives.

  11. Characteristics of the Zunil Geothermal Field (Western Guatemala)

    SciTech Connect

    Bethancourt, H.R.; Dominco, E.

    1982-10-01

    The Zunil geothermal field represents the marginal, shallow expression of a vast geothermal complex buried beneath active volcanic edifices (Cerro Quemado, Volcan Santa Maria, Western Guatemala) some kilometers to the west. The area lies at the edge of a tecto-volcanic depression where some 1,000 m of Tertiary and Quaternary volcanics are underlain by a granodioritic basement. High temperature geothermal fluids (over 280/sup 0/C) reach the field from the west, upflowing along the inclined contact between the granodioritic and the overlying volcanics, and along fractures in the basement itself. A conglomeratic layer at the volcanics/basement contact, and the underlying weathered cap of the basement form the only permeable horizon of the succession; this horizon forms the local reservoir tapped by the productive wells. Its reduced thickness (around 50 m) allows for a limited fluid storage such that field production relies on external recharge along the permeable horizon and underlying fractures in the granodiorite. Production testing and simulation models indicate a fairly rapid evolution of reservoir conditions from the liquid to the steam phase, due to pressure drawdown, in its turn due to a restricted inflow. The phenomenon determines an upgrading of the fluid enthalpy, but a decline of mass output. Simulated reinjection into the reservoir proved to be an effective measure to slow down such an evolution and optimize the field exploitation.

  12. Hydrogeochemical exploration of the Tecuamburro Volcano region, Guatemala

    SciTech Connect

    Goff, F.; Truesdell, A.H.; Janik, C.J.; Adams, A.; Roldan-M, A.; Meeker, K.; Geological Survey, Menlo Park, CA; Los Alamos National Lab., NM; Instituto Nacional de Electrificacion, Guatemala City . Unidad de Desarollo Geotermico; Los Alamos National Lab., NM )

    1989-01-01

    Approximately 100 thermal and nonthermal water samples and 20 gas samples from springs and fumaroles have been chemically and isotopically analyzed to help evaluate the geothermal potential of the Tecuamburro Volcano region, Guatemala. Thermal waters of the acid- sulfate, steam condensate, and neutral-chloride types generally occur in restricted hydrogeologic areas: Tecuamburro-Laguna Ixpaco (acid- sulfate); andesite highland north of Tecuamburro (steam-condensate); Rio Los Esclavos (neutral-chloride). One small area of neutral-chloride springs east of the village of Los Esclavos has no relation to the Tecuamburro geothermal system. Neutral-chloride springs on the Rio Los Esclavos east and southeast of Tecuamburro show mixing with various types of groundwaters and display a maximum oxygen-18 enrichment compared to the world meteoric line of only about 1.5 parts per thousand. Maximum estimated subsurface temperatures are {le}200{degree}C. In contrast, maximum estimated subsurface temperatures based on gas compositions in the Laguna Ixpaco area are about 300{degree}C. The relation of neutral-chloride waters to the overall Tecuamburro geothermal system is not entirely resolved but we have suggested two system models. Regardless of model, we believe that a first exploration drill hole should be sited within 0.5 km of Laguna Ixpaco to tap the main geothermal reservoir or its adjacent, main upflow zone. 9 refs., 4 figs., 3 tabs.

  13. Date | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Date Jump to: navigation, search Properties of type "Date" Showing 48 properties using this type. A Property:ASHRAE 169 End Date Property:ASHRAE 169 Start Date B Property:Building...

  14. Sandia Agile MEMS Prototyping, Layout Tools, Education and Services Program

    SciTech Connect

    Schriner, H.; Davies, B.; Sniegowski, J.; Rodgers, M.S.; Allen, J.; Shepard, C.

    1998-05-01

    Research and development in the design and manufacture of Microelectromechanical Systems (MEMS) is growing at an enormous rate. Advances in MEMS design tools and fabrication processes at Sandia National Laboratories` Microelectronics Development Laboratory (MDL) have broadened the scope of MEMS applications that can be designed and manufactured for both military and commercial use. As improvements in micromachining fabrication technologies continue to be made, MEMS designs can become more complex, thus opening the door to an even broader set of MEMS applications. In an effort to further research and development in MEMS design, fabrication, and application, Sandia National Laboratories has launched the Sandia Agile MEMS Prototyping, Layout Tools, Education and Services Program or SAMPLES program. The SAMPLES program offers potential partners interested in MEMS the opportunity to prototype an idea and produce hardware that can be used to sell a concept. The SAMPLES program provides education and training on Sandia`s design tools, analysis tools and fabrication process. New designers can participate in the SAMPLES program and design MEMS devices using Sandia`s design and analysis tools. As part of the SAMPLES program, participants` designs are fabricated using Sandia`s 4 level polycrystalline silicon surface micromachine technology fabrication process known as SUMMiT (Sandia Ultra-planar, Multi-level MEMS Technology). Furthermore, SAMPLES participants can also opt to obtain state of the art, post-fabrication services provided at Sandia such as release, packaging, reliability characterization, and failure analysis. This paper discusses the components of the SAMPLES program.

  15. Petroleum geology and resources of southeastern Mexico, northern Guatemala, and Belize

    SciTech Connect

    Peterson, J.A.

    1986-05-01

    Petroleum deposits in southeastern Mexico and Guatemala occur in two main basinal provinces: the Gulf Coast Tertiary basin area, which includes the Reforma and offshore Campeche Mesozoic fields, and the Peten basin of eastern Chiapas State (Mexico) and Guatemala. Major oil production, in order of importance, is from Cretaceous, Paleocene, and Jurassic carbonate reservoirs in the reforma and offshore Campeche area. Several small oil fields have been discovered in Cretaceous carbonate reservoirs in west-central Guatemala. Almost all important production is in salt structure traps or on domes and anticlines that may be related to deep-seated salt movement. Some minor oil production has occurred in Cretaceous carbonate reservoirs in a buried overthrust belt along the west flank of the Veracruz basin. Gas production is mainly from Tertiary sandstone reservoirs.

  16. Studies of geothermal power and process heat applications in St. Lucia and Guatemala

    SciTech Connect

    Altseimer, J.H.; Edeskuty, F.J.

    1986-01-01

    Many countries have the potential to use geothermal energy for both power production and process heat applications. Two Los Alamos programs have studied the most effective use of geothermal energy in St. Lucia and Guatemala. The general objectives are (1) to reduce oil imports; (2) develop employment opportunities; and (3) make products more competitive. The initial St. Lucia studies emphasized power generation but a number of applications for the power plant's residual heat were also found and costs and systems have been determined. The costs of geothermal heat compare favorably with heat from other sources such as oil. In Guatemala, the development of the nation's first geothermal field is well advanced. Process heat applications and their coordination with power generation plants are being studied at Los Alamos. Guatemala has at least two fields that appear suitable for power and heat production. These fields are close to urban centers and to many potential heat applications.

  17. Electrical power systems (Guatemala). Non-current carriers, March 1991. Export trade information

    SciTech Connect

    Not Available

    1991-03-02

    The article analyzes the non-current carrying devices market in Guatemala and contains the following subtopics: market assessment, competitive situation, market access, trade promotion opportunities, best sales prospects, and statistical data. The market for noncurrent-carrying devices in Guatemala totalled US $4.3 million in 1988, compared with a total of US $5.0 million in 1989. Approximately US $6.4 million is expected in 1990. Of this import market, the United States has always had the greatest share.

  18. SPICE Level 3 and BSIM3v3.1 characterization of monolithic integrated CMOS-MEMS devices

    SciTech Connect

    Staple, B.D.; Watts, H.A.; Dyck, C.; Griego, A.P.; Hewlett, F.W.; Smith, J.H.

    1998-08-01

    The monolithic integration of MicroElectroMechanical Systems (MEMS) with the driving, controlling, and signal processing electronics promises to improve the performance of micromechanical devices as well as lower their manufacturing, packaging, and instrumentation costs. Key to this integration is the proper interleaving, combining, and customizing of the manufacturing processes to produce functional integrated micromechanical devices with electronics. The authors have developed a MEMS-first monolithic integrated process that first seals the micromechanical devices in a planarized trench and then builds the electronics in a conventional CMOS process. To date, most of the research published on this technology has focused on the performance characteristics of the mechanical portion of the devices, with little information on the attributes of the accompanying electronics. This work attempts to reduce this information void by presenting the results of SPICE Level 3 and BSIM3v3.1 model parameters extracted for the CMOS portion of the MEMS-first process. Transistor-level simulations of MOSFET current, capacitance, output resistance, and transconductance versus voltage using the extracted model parameters closely match the measured data. Moreover, in model validation efforts, circuit-level simulation values for the average gate propagation delay in a 101-stage ring oscillator are within 13--18% of the measured data. In general, the BSIM3v3.1 models provide improved accuracy over the SPICE Level 3 models. These results establish the following: (1) the MEMS-first approach produces functional CMOS devices integrated on a single chip with MEMS devices and (2) the devices manufactured in the approach have excellent transistor characteristics. Thus, the MEMS-first approach renders a solid technology foundation for customers designing in the technology.

  19. Monolithic integration of a MOSFET with a MEMS device

    DOEpatents

    Bennett, Reid; Draper, Bruce

    2003-01-01

    An integrated microelectromechanical system comprises at least one MOSFET interconnected to at least one MEMS device on a common substrate. A method for integrating the MOSFET with the MEMS device comprises fabricating the MOSFET and MEMS device monolithically on the common substrate. Conveniently, the gate insulator, gate electrode, and electrical contacts for the gate, source, and drain can be formed simultaneously with the MEMS device structure, thereby eliminating many process steps and materials. In particular, the gate electrode and electrical contacts of the MOSFET and the structural layers of the MEMS device can be doped polysilicon. Dopant diffusion from the electrical contacts is used to form the source and drain regions of the MOSFET. The thermal diffusion step for forming the source and drain of the MOSFET can comprise one or more of the thermal anneal steps to relieve stress in the structural layers of the MEMS device.

  20. Predicting fracture in micron-scale polycrystalline silicon MEMS

    Office of Scientific and Technical Information (OSTI)

    structures. (Technical Report) | SciTech Connect Technical Report: Predicting fracture in micron-scale polycrystalline silicon MEMS structures. Citation Details In-Document Search Title: Predicting fracture in micron-scale polycrystalline silicon MEMS structures. Designing reliable MEMS structures presents numerous challenges. Polycrystalline silicon fractures in a brittle manner with considerable variability in measured strength. Furthermore, it is not clear how to use a measured tensile

  1. The Sandia MEMS Passive Shock Sensor : dormancy and aging. (Technical

    Office of Scientific and Technical Information (OSTI)

    Report) | SciTech Connect The Sandia MEMS Passive Shock Sensor : dormancy and aging. Citation Details In-Document Search Title: The Sandia MEMS Passive Shock Sensor : dormancy and aging. This report presents the results of an aging experiment that was established in FY09 and completed in FY10 for the Sandia MEMS Passive Shock Sensor. A total of 37 packages were aged at different temperatures and times, and were then tested after aging to determine functionality. Aging temperatures were

  2. MEMS Packaging - Current Issues and Approaches

    SciTech Connect

    DRESSENDORFER,PAUL V.; PETERSON,DAVID W.; REBER,CATHLEEN ANN

    2000-01-19

    The assembly and packaging of MEMS (Microelectromechanical Systems) devices raise a number of issues over and above those normally associated with the assembly of standard microelectronic circuits. MEMS components include a variety of sensors, microengines, optical components, and other devices. They often have exposed mechanical structures which during assembly require particulate control, space in the package, non-contact handling procedures, low-stress die attach, precision die placement, unique process schedules, hermetic sealing in controlled environments (including vacuum), and other special constraints. These constraints force changes in the techniques used to separate die on a wafer, in the types of packages which can be used in the assembly processes and materials, and in the sealing environment and process. This paper discusses a number of these issues and provides information on approaches being taken or proposed to address them.

  3. Strength of Polysilicon for MEMS Devices

    SciTech Connect

    Buchheit, Thomas E.; LaVan, David A.

    1999-07-20

    The safe, secure and reliable application of Microelectromechanical Systems (MEMS) devices requires knowledge about the distribution in material and mechanical properties of the small-scale structures. A new testing program at Sandia is quantifying the strength distribution using polysilicon samples that reflect the dimensions of critical MEMS components. The strength of polysilicon fabricated at Sandia's Microelectronic Development Laboratory was successfully measured using samples 2.5 microns thick, 1.7 microns wide with lengths between 15 and 25 microns. These tensile specimens have a freely moving hub on one end that anchors the sample to the silicon die and allows free rotation. Each sample is loaded in uniaxial tension by pulling laterally with a flat tipped diamond in a computer-controlled Nanoindenter. The stress-strain curve is calculated using the specimen cross section and gage length dimensions verified by measuring against a standard in the SEM.

  4. Mem. S.A.It. Vol.

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Mem. S.A.It. Vol. 76, 114 c SAIt 2005 Memorie della Polarization and energy content of parsec-scale AGN jets Maxim Lyutikov 1 , Vladimir Pariev 2,3 , Denise Gabuzda 4 1 University of British Columbia, Vancouver, Canada 2 University of Wisconsin Madison, Madison, USA and 3 Lebedev Physical Institute, Moscow, Russia 4 University College Cork, Cork, Ireland Abstract. Most of energy carried by relativistic AGN jets remains undetected until hun- dreds of kiloparsecs where interaction with

  5. MEMS fluidic actuator - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    46,524 Site Map Printable Version Share this resource About Search Categories (15) Advanced Materials Biomass and Biofuels Building Energy Efficiency Electricity Transmission Energy Analysis Energy Storage Geothermal Hydrogen and Fuel Cell Hydropower, Wave and Tidal Industrial Technologies Solar Photovoltaic Solar Thermal Startup America Vehicles and Fuels Wind Energy Partners (27) Visual Patent Search Success Stories Find More Like This Return to Search MEMS fluidic actuator United States

  6. Design and reliability of a MEMS thermal rotary actuator. (Conference...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Design and reliability of a MEMS thermal rotary ... Resource Relation: Conference: Proposed for presentation at the TEXMEMS IX held September ...

  7. Integrated superhard and metallic coatings for MEMS : LDRD 57300...

    Office of Scientific and Technical Information (OSTI)

    usemore than previous methods such as high temperature ... MEMS. A method to study the adhesion of these ... Country of Publication: United States Language: English ...

  8. Review of pyroelectric thermal energy harvesting and new MEMs...

    Office of Scientific and Technical Information (OSTI)

    Conference: Review of pyroelectric thermal energy harvesting and new MEMs based resonant energy conversion techniques Citation Details In-Document Search Title: Review of ...

  9. Predicting fracture in micron-scale polycrystalline silicon MEMS...

    Office of Scientific and Technical Information (OSTI)

    Predicting fracture in micron-scale polycrystalline silicon MEMS structures. Citation Details In-Document Search Title: Predicting fracture in micron-scale polycrystalline silicon ...

  10. Accelerated testing of sliding-contact MEMS devices. (Conference...

    Office of Scientific and Technical Information (OSTI)

    at the Mechanical Reliability of Silicon MEMS held February 27-28, 2006 in Hale, Germany. ... Language: English Subject: 42 ENGINEERING; SILICON; TESTING; MICROELECTRONIC CIRCUITS; ...

  11. Optical system properties of a reconfigurable MEMS interconnect...

    Office of Scientific and Technical Information (OSTI)

    system properties of a reconfigurable MEMS interconnect. Citation Details In-Document ... Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 42 ...

  12. Thin Silicon MEMS Contact-Stress Sensor Kotovksy, J; Tooker,...

    Office of Scientific and Technical Information (OSTI)

    A; Horsley, D 42 ENGINEERING; 42 ENGINEERING; ACCURACY; ACTUATORS; SILICON This thin, MEMS contact-stress sensor continuously and accurately measures time-varying, solid...

  13. Thin Silicon MEMS Contact-Stress Sensor Kotovsky, J; Tooker,...

    Office of Scientific and Technical Information (OSTI)

    ACCURACY; ACTUATORS; CALIBRATION; DIAPHRAGM; SILICON; STABILITY; THICKNESS This thin, MEMS contact-stress (CS) sensor continuously and accurately measures time-varying, solid...

  14. Thin Silicon MEMS Contact-Stress Sensor Kotovsky, J; Tooker,...

    Office of Scientific and Technical Information (OSTI)

    LIFETIME; PACKAGING; PERFORMANCE; SILICON; THICKNESS This work offers the first, thin, MEMS contact-stress (CS) sensor capable of accurate in situ measruement of time-varying,...

  15. Frequency Stabilization in Nonlinear MEMS and NEMS Oscillators...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Frequency Stabilization in Nonlinear MEMS and NEMS Oscillators Technology available for licensing: a method to create micro- and nanoscale mechanical oscillators with excellent...

  16. Failure mechanisms in MEMS. (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    In MEMS, both electrical and mechanical precautions must be enacted to reduce the risk of ... Subject: 42 ENGINEERING; MICROELECTRONICS; FAILURE MODE ANALYSIS; FABRICATION; PACKAGING; ...

  17. Tunable Young's Modulus in Carbon MEMS using Graphene-based Stiffeners...

    Office of Scientific and Technical Information (OSTI)

    Tunable Young's Modulus in Carbon MEMS using Graphene-based Stiffeners. Citation Details In-Document Search Title: Tunable Young's Modulus in Carbon MEMS using Graphene-based ...

  18. Solid polymer MEMS-based fuel cells

    DOEpatents

    Jankowski, Alan F.; Morse, Jeffrey D.

    2008-04-22

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  19. Solid oxide MEMS-based fuel cells

    DOEpatents

    Jankowksi, Alan F.; Morse, Jeffrey D.

    2007-03-13

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  20. The challenge of reliability in MEMS commercialization

    SciTech Connect

    Miller, W.M.; Tanner, D.M.; Miller, S.L.

    1998-09-01

    MicroElectroMechanical Systems (MEMS) that think, sense, act and communicate will open up a broad new array of cost-effective solutions only if MEMS is demonstrated to be sufficiently reliable. This could prove to be a major challenge if it is not addressed concurrently with technology development. There are three requirements for a valid assessment of reliability: statistical significance, identification of fundamental failure mechanisms and development of techniques for accelerating them, and valid physical models to allow prediction of failures during actual use. While these already exist for the microelectronics portion of such integrated systems, the real challenge lies in the less well-understood micromachine portions and its synergistic effects with microelectronics. This requires the elicitation of a methodology focused on MEMS reliability, which the authors discuss. A new testing and analysis infrastructure must also be developed to meet the needs of this methodology. They describe their implementation of this infrastructure and its success in addressing the three requirements for a valid reliability assessment.

  1. A survey of geothermal process heat applications in Guatemala: An engineering survey

    SciTech Connect

    Altseimer, J.H.; Edeskuty, F.J.

    1988-08-01

    This study investigates how process heat from Guatemala's geothermal energy resources can be developed to reduce Guatemala's costly importation of oil, create new employment by encouraging new industry, and reduce fuel costs for existing industry. This investigation was funded by the US Agency for International Development and carried out jointly by the Guatemalan Government and the Los Alamos National Laboratory. Two sites, Amatitlan and Zunil, are being developed geothermally. Amatitlan is in the better industrial area but Zunil's geothermal development is more advanced. The industry around Zunil is almost exclusively agricultural and the development of an agricultural processing plant (freezing, dehydration, and cold storage) using geothermal heat is recommended. Similar developments throughout the volcanic zones of Guatemala are possible. Later, when the field at Amatitlan has been further developed, an industrial park can be planned. Potential Amatitlan applications are the final stage of salt refining, a thermal power plant, hospital/hotel heating and cooling, steam curing of concrete blocks, production of alcohol from sugar cane, and production of polyethylene from ethanol. Other special developments such as water pumping for the city of Guatemala and the use of moderate-temperature geothermal fluids for localized power production are also possible. 12 refs., 13 figs., 14 tabs.

  2. DATE: | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DATE: DATE: PDF icon DATE: More Documents & Publications Policy Flash 2013-2 Policy Flash 2013-51 311 Notice Aquisition Letter 2013-05 Financial Assistance Letter 2013-03 ...

  3. DATE: | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DATE: DATE: DATE: (349.94 KB) More Documents & Publications FAQS Job Task Analyses - DOE Aviation Manager FAQS Reference Guide - Aviation Manager FAQS Reference Guide - Aviation Safety Officer

  4. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    thin, MEMS contact-stress sensor continuously and accurately measures time-varying, solid interface loads over tens of thousands of load cycles. The contact-stress sensor is extremely thin (150 {mu}m) and has a linear output with an accuracy of {+-} 1.5% FSO. Authors: Kotovksy, J ; Tooker, A ; Horsley, D Publication Date: 2010-05-28 OSTI Identifier: 984646 Report Number(s): LLNL-PROC-433955 TRN: US201016%%1413 DOE Contract Number: W-7405-ENG-48 Resource Type: Conference Resource Relation:

  5. Posting Date: OPEN Posting Close Date: OPEN

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    OPEN Posting Close Date: OPEN North American Industry Classification System (NAICS) code for the request: TBD Estimated Subcontract/PO Value: TBD Estimated Period of Performance N/A Estimated RFP/RFQ Release Date: TBD Estimated Award Date: TBD Competition Type: Full Set-Aside Buyer Contact Email: business@lanl.gov Title: General Construction Services Description of Product or Service Required Looking for small business construction companies in all sectors of construction. Must be familiar with

  6. Tools and techniques for failure analysis and qualification of MEMS.

    SciTech Connect

    Walraven, Jeremy Allen

    2003-07-01

    Many of the tools and techniques used to evaluate and characterize ICs can be applied to MEMS technology. In this paper we discuss various tools and techniques used to provide structural, chemical, and electrical analysis and how these data aid in qualifying MEMS technologies.

  7. MEMS Pro Design Kit - Parts A, B, and C

    Energy Science and Technology Software Center

    2006-06-15

    Part A: SUMMiT V design Kit components for use with MEMS Pro from SoftMEMS Part B: SUMMiT V remote DRC and gear generator source code for use with autocad visual basic Part C: SUMMiT V DRC rules source and test cases for Calibre DRC engine

  8. Pre-release plastic packaging of MEMS and IMEMS devices

    SciTech Connect

    Peterson, Kenneth A.; Conley, William R.

    2002-01-01

    A method is disclosed for pre-release plastic packaging of MEMS and IMEMS devices. The method can include encapsulating the MEMS device in a transfer molded plastic package. Next, a perforation can be made in the package to provide access to the MEMS elements. The non-ablative material removal process can include wet etching, dry etching, mechanical machining, water jet cutting, and ultrasonic machining, or any combination thereof. Finally, the MEMS elements can be released by using either a wet etching or dry plasma etching process. The MEMS elements can be protected with a parylene protective coating. After releasing the MEMS elements, an anti-stiction coating can be applied. The perforating step can be applied to both sides of the device or package. A cover lid can be attached to the face of the package after releasing any MEMS elements. The cover lid can include a window for providing optical access. The method can be applied to any plastic packaged microelectronic device that requires access to the environment, including chemical, pressure, or temperature-sensitive microsensors; CCD chips, photocells, laser diodes, VCSEL's, and UV-EPROMS. The present method places the high-risk packaging steps ahead of the release of the fragile portions of the device. It also provides protection for the die in shipment between the molding house and the house that will release the MEMS elements and subsequently treat the surfaces.

  9. RF-MEMS capacitive switches with high reliability

    DOEpatents

    Goldsmith, Charles L.; Auciello, Orlando H.; Carlisle, John A.; Sampath, Suresh; Sumant, Anirudha V.; Carpick, Robert W.; Hwang, James; Mancini, Derrick C.; Gudeman, Chris

    2013-09-03

    A reliable long life RF-MEMS capacitive switch is provided with a dielectric layer comprising a "fast discharge diamond dielectric layer" and enabling rapid switch recovery, dielectric layer charging and discharging that is efficient and effective to enable RF-MEMS switch operation to greater than or equal to 100 billion cycles.

  10. Instituto Nacional de Electrification, Guatemala Load Dispatch Center and Global Communications Center. Feasibility report (Instituto Nacional de Electrificacion, Guatemala Centro Nacional de Despacho de Carga y Sistema Global de Comunicaciones). Export trade information

    SciTech Connect

    Not Available

    1985-07-01

    The report presents the results of a feasibility study for the National Load Dispatch Center and Global Communications System Project in Guatemala. The project consists of a communication system which will provide Institute Nacional de Electrificacion (INDE) operations personnel direct voice access to all major power system facilities. In addition, a modern computer based load dispatch center has been configured on a secure and reliable basis to provide automatic generation control of all major interconnected generating plants within Guatemala.

  11. Are diamonds a MEM's best friend?

    SciTech Connect

    Auciello, O.; Pacheco, S.; Sumant, A. V.; Gudeman, C.; Sampath, S.; Datta, A.; Carpick, R. W.; Adiga, V. P.; Zurcher, P.; Ma, Z.; Yuan, H.-C.; Carlisle, J. A.; Kabius, B.; Hiller, J.; Srinivasan, S.; Freescale Semiconductor; Innovative MicroTech.; Univ. of Pennsylvania; Univ. of Wisconsin at Madison; Advanced Diamond Tech., Inc.; INTEL Res. Lab.

    2007-12-01

    Next-generation military and civilian communication systems will require technologies capable of handling data/ audio, and video simultaneously while supporting multiple RF systems operating in several different frequency bands from the MHz to the GHz range. RF microelectromechani-cal/nanoelectromechanical (MEMS/NEMS) devices, such as resonators and switches, are attractive to industry as they offer a means by which performance can be greatly improved for wireless applications while at the same time potentially reducing overall size and weight as well as manufacturing costs.

  12. The Sandia MEMS passive shock sensor : FY07 maturation activities.

    SciTech Connect

    Houston, Jack E.; Blecke, Jill; Mitchell, John Anthony; Wittwer, Jonathan W.; Crowson, Douglas A.; Clemens, Rebecca C.; Walraven, Jeremy Allen; Epp, David S.; Baker, Michael Sean

    2008-08-01

    This report describes activities conducted in FY07 to mature the MEMS passive shock sensor. The first chapter of the report provides motivation and background on activities that are described in detail in later chapters. The second chapter discusses concepts that are important for integrating the MEMS passive shock sensor into a system. Following these two introductory chapters, the report details modeling and design efforts, packaging, failure analysis and testing and validation. At the end of FY07, the MEMS passive shock sensor was at TRL 4.

  13. Electrical power systems (Brazil, Chile, Colombia, Dominican Republic, Guatemala, Jamaica, Panama and Peru)

    SciTech Connect

    Not Available

    1992-01-01

    This 12-part set of reports contains market information on the following countries and topics: Brazil - potentiometers, steam turbines, gas turbines, electric generators; Chile - power systems; Colombia - electric generators; Dominican Republic - electric generators; Guatemala - power generation and distribution equipment, non-current carriers, electric generators, and turbines; Jamaica - power systems; Panama - power generation and control equipment; and Peru - power generation equipment. These reports have been processed separately for inclusion on the data base.

  14. Energy expenditure and socioeconomic status in Guatemala as measured by the doubly labelled water method

    SciTech Connect

    Stein, T.P.; Johnston, F.E.; Greiner, L.

    1988-02-01

    The energy expenditure of lower (group 1) and upper socioeconomic group females (group 2) from a marginal community in Guatemala City was determined by using the doubly labelled water method. Energy expenditure values were 1925 +/- 66 (mean, SEM) kcal/d (group 1) and 2253 +/- 145 kcal/d group 2 (p less than 0.03). About half of this difference can be attributed to size.

  15. Application of scientific core drilling to geothermal exploration: Platanares, Honduras and Tecuamburro Volcano, Guatemala, Central America

    SciTech Connect

    Goff, S.J.; Goff, F.E.; Heiken, G.H.; Duffield, W.A.; Janik, C.J.

    1994-04-01

    Our efforts in Honduras and Guatemala were part of the Central America Energy Resource Project (CAERP) funded by the United States Agency for International Development (AID). Exploration core drilling operations at the Platanares, Honduras and Tecuamburro Volcano, Guatemala sites were part of a geothermal assessment for the national utility companies of these countries to locate and evaluate their geothermal resources for electrical power generation. In Honduras, country-wide assessment of all thermal areas determined that Platanares was the site with the greatest geothermal potential. In late 1986 to middle 1987, three slim core holes were drilled at Platanares to a maximum depth of 680 m and a maximum temperature of 165{degree}C. The objectives were to obtain information on the geothermal gradient, hydrothermal alterations, fracturing, and possible inflows of hydrothermal fluids. Two holes produced copious amounts of water under artesian conditions and a total of 8 MW(t) of energy. Geothermal investigations in Guatemala focused on the Tecuamburro Volcano geothermal site. The results of surface geological, volcanological, hydrogeochemical, and geophysical studies at Tecuamburro Volcano indicated a substantial shallow heat source. In early 1990 we drilled one core hole, TCB-1, to 808 m depth. The measured bottom hole temperature was 238{degree}C. Although the borehole did not flow, in-situ samples indicate the hole is completed in a vapor-zone above a probable 300{degree}C geothermal reservoir.

  16. Superhydrophobic Surface Coatings for Microfluidics and MEMs.

    SciTech Connect

    Branson, Eric D.; Singh, Seema [Sandia National Laboratories, Livermore, CA] [Sandia National Laboratories, Livermore, CA; Houston, Jack E.; van Swol, Frank B.; Brinker, C. Jeffrey

    2006-11-01

    Low solid interfacial energy and fractally rough surface topography confer to Lotus plants superhydrophobic (SH) properties like high contact angles, rolling and bouncing of liquid droplets, and self-cleaning of particle contaminants. This project exploits the porous fractal structure of a novel, synthetic SH surface for aerosol collection, its self-cleaning properties for particle concentration, and its slippery nature 3 to enhance the performance of fluidic and MEMS devices. We propose to understand fundamentally the conditions needed to cause liquid droplets to roll rather than flow/slide on a surface and how this %22rolling transition%22 influences the boundary condition describing fluid flow in a pipe or micro-channel. Rolling of droplets is important for aerosol collection strategies because it allows trapped particles to be concentrated and transported in liquid droplets with no need for a pre-defined/micromachined fluidic architecture. The fluid/solid boundary condition is important because it governs flow resistance and rheology and establishes the fluid velocity profile. Although many research groups are exploring SH surfaces, our team is the first to unambiguously determine their effects on fluid flow and rheology. SH surfaces could impact all future SNL designs of collectors, fluidic devices, MEMS, and NEMS. Interfaced with inertial focusing aerosol collectors, SH surfaces would allow size-specific particle populations to be collected, concentrated, and transported to a fluidic interface without loss. In microfluidic systems, we expect to reduce the energy/power required to pump fluids and actuate MEMS. Plug-like (rather than parabolic) velocity profiles can greatly improve resolution of chip-based separations and enable unprecedented control of concentration profiles and residence times in fluidic-based micro-reactors. Patterned SH/hydrophilic channels could induce mixing in microchannels and enable development of microflow control elements

  17. MEMS inertial sensors with integral rotation means.

    SciTech Connect

    Kohler, Stewart M.

    2003-09-01

    The state-of-the-art of inertial micro-sensors (gyroscopes and accelerometers) has advanced to the point where they are displacing the more traditional sensors in many size, power, and/or cost-sensitive applications. A factor limiting the range of application of inertial micro-sensors has been their relatively poor bias stability. The incorporation of an integral sensitive axis rotation capability would enable bias mitigation through proven techniques such as indexing, and foster the use of inertial micro-sensors in more accuracy-sensitive applications. Fabricating the integral rotation mechanism in MEMS technology would minimize the penalties associated with incorporation of this capability, and preserve the inherent advantages of inertial micro-sensors.

  18. Mechanics and tribology of MEMS materials.

    SciTech Connect

    Prasad, Somuri V.; Dugger, Michael Thomas; Boyce, Brad Lee; Buchheit, Thomas Edward

    2004-04-01

    Micromachines have the potential to significantly impact future weapon component designs as well as other defense, industrial, and consumer product applications. For both electroplated (LIGA) and surface micromachined (SMM) structural elements, the influence of processing on structure, and the resultant effects on material properties are not well understood. The behavior of dynamic interfaces in present as-fabricated microsystem materials is inadequate for most applications and the fundamental relationships between processing conditions and tribological behavior in these systems are not clearly defined. We intend to develop a basic understanding of deformation, fracture, and surface interactions responsible for friction and wear of microelectromechanical system (MEMS) materials. This will enable needed design flexibility for these devices, as well as strengthen our understanding of material behavior at the nanoscale. The goal of this project is to develop new capabilities for sub-microscale mechanical and tribological measurements, and to exercise these capabilities to investigate material behavior at this size scale.

  19. Sandia Advanced MEMS Design Tools, V2.1

    Energy Science and Technology Software Center

    2002-02-04

    SUMMiT V (Sandia Ultra planar Multi level MEMS Technology) is a 5 level surface micromachine fabrication technology, which customers intornal and external to Sandia can access to fabricate prototype MEMS devices. This CD contains an integrated set of electronic files that: a) Describe the SUMMiT V fabrication process b) Provide enabling educational information (including pictures, videos, technical information) c) Facilitate the process of designing MEMS with the SUMMiT process (prototype file, Design Rule Checker, Standardmore » Parts Library) d) Facilitate the process of having MEMS fabricated at Sandia National Laboratories e) Facilitate the process of having post-fabrication services performed. While there exist some files on the CD that are used in conjunction with software package AutoCAD, these files are not intended for use independent of the CD. Nole that the customer must purchase his/her own copy of Aut0CAD to use with these files.« less

  20. Sandia Advanced MEMS Design Tools, Version 2.0

    Energy Science and Technology Software Center

    2002-06-13

    Sandia Advanced MEMS Design Tools is a 5-level surface micromachine fabrication technology, which customers internal and external to Sandia can access to fabricate prototype MEMS devices. This CD contains an integrated set of electronic files that: a) Describe the SUMMiT V fabrication process b) Provide enabling educational information (including pictures, videos, technical information) c)Facilitate the process of designing MEMS with the SUMMiT process (prototype file, Design Rule Checker, Standard Parts Library) d) Facilitate the processmore » of having MEMS fabricated at SNL e) Facilitate the process of having post-fabrication services performed While there exist some files on the CD that are used in conjunction with the software AutoCAD, these files are not intended for use independent of the CD. NOTE: THE CUSTOMER MUST PURCHASE HIS/HER OWN COPY OF AutoCAD TO USE WITH THESE FILES.« less

  1. The Sandia MEMS passive shock sensor : FY08 design summary. ...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: The Sandia MEMS passive shock sensor : FY08 design summary. Citation ... Word Cloud More Like This Full Text preview image File size NAView Full Text View Full ...

  2. The Sandia MEMS Passive Shock Sensor : FY08 failure analysis...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: The Sandia MEMS Passive Shock Sensor : FY08 failure analysis activities. ... Word Cloud More Like This Full Text preview image File size NAView Full Text View Full ...

  3. The MEMS Technology Revolution Is Beginning | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Some of the very first MEMS devices were ink-jet print heads and pressure sensors. Later ... devices are used in different parts of a car including the engine, tires and the airbags. ...

  4. Planarization techniques for MEMS: enabling new structures and enhancing manufacturability

    SciTech Connect

    Smith, J.H.

    1996-12-31

    Planarization techniques such as chemical-mechanical polishing (CMP) have emerged as enabling technologies for the manufacturing of multi- level metal interconnects used in high-density Integrated Circuits (IC). An overview of general planarization techniques for MicroElectroMechanical Systems (MEMS) and, in particular, the extension of CMP from sub-micron IC manufacturing to the fabrication of complex surface-micromachined MEMS will be presented. Planarization technique alleviates processing problems associated with fabrication of multi-level polysilicon structures, eliminates design constraints linked with non-planar topography, and provides an avenue for integrating different process technologies. The CMP process and present examples of the use of CMP in fabricating MEMS devices such as microengines, pressure sensors, and proof masses for accelerometers along with its use for monolithically integrating MEMS devices with microelectronics are presented.

  5. Integrated superhard and metallic coatings for MEMS : LDRD 57300...

    Office of Scientific and Technical Information (OSTI)

    ... This approach was used to deposit copper, gold and rhodium onto polysilicon MEMS. A method to study the adhesion of these metals to polysilicon was developed. It was also shown ...

  6. MEMS based pyroelectric thermal energy harvester (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    MEMS based pyroelectric thermal energy harvester Title: MEMS based pyroelectric thermal energy harvester A pyroelectric thermal energy harvesting apparatus for generating an electric current includes a cantilevered layered pyroelectric capacitor extending between a first surface and a second surface, where the first surface includes a temperature difference from the second surface. The layered pyroelectric capacitor includes a conductive, bimetal top electrode layer, an intermediate pyroelectric

  7. Development of MEMS based pyroelectric thermal energy harvesters

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Development of MEMS based pyroelectric thermal energy harvesters Citation Details In-Document Search Title: Development of MEMS based pyroelectric thermal energy harvesters The efficient conversion of waste thermal energy into electrical energy is of considerable interest due to the huge sources of low-grade thermal energy available in technologically advanced societies. Our group at the Oak Ridge National Laboratory (ORNL) is developing a new type of high

  8. Local residual stress monitoring of aluminum nitride MEMS using UV

    Office of Scientific and Technical Information (OSTI)

    micro-Raman spectroscopy (Journal Article) | DOE PAGES Local residual stress monitoring of aluminum nitride MEMS using UV micro-Raman spectroscopy This content will become publicly available on January 6, 2017 Title: Local residual stress monitoring of aluminum nitride MEMS using UV micro-Raman spectroscopy Localized stress variation in aluminum nitride (AlN) sputtered on patterned metallization has been monitored through the use of UV micro-Raman spectroscopy. This technique utilizing 325

  9. MEMS sensor measurement of surface temperature response during subcooled

    Office of Scientific and Technical Information (OSTI)

    flow boiling in a rectangular flow channel (Journal Article) | DOE PAGES MEMS sensor measurement of surface temperature response during subcooled flow boiling in a rectangular flow channel Title: MEMS sensor measurement of surface temperature response during subcooled flow boiling in a rectangular flow channel Authors: Yabuki, Tomohide Search DOE PAGES for author "Yabuki, Tomohide" Search DOE PAGES for ORCID "0000000163741912" Search orcid.org for ORCID

  10. MEMS packaging with etching and thinning of lid wafer to form lids and expose device wafer bond pads

    SciTech Connect

    Chanchani, Rajen; Nordquist, Christopher; Olsson, Roy H; Peterson, Tracy C; Shul, Randy J; Ahlers, Catalina; Plut, Thomas A; Patrizi, Gary A

    2013-12-03

    In wafer-level packaging of microelectromechanical (MEMS) devices a lid wafer is bonded to a MEMS wafer in a predermined aligned relationship. Portions of the lid wafer are removed to separate the lid wafer into lid portions that respectively correspond in alignment with MEMS devices on the MEMS wafer, and to expose areas of the MEMS wafer that respectively contain sets of bond pads respectively coupled to the MEMS devices.

  11. MEMORANDUM TO: FILE DATE-

    Office of Legacy Management (LM)

    ... to replace the statement "A Conmission Policy for Leasing Commission-Controlled Mining Properties," dated June 20, 1949. Upon your approval, we will use this statement to in ...

  12. High-G testing of MEMS mechanical non-volatile memory and silicon...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: High-G testing of MEMS mechanical non-volatile memory and silicon re-entry switch. Citation Details In-Document Search Title: High-G testing of MEMS mechanical ...

  13. On-chip monitoring of MEMS gear motion. (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Conference: On-chip monitoring of MEMS gear motion. Citation Details In-Document Search Title: On-chip monitoring of MEMS gear motion. We have designed and fabricated a polysilicon ...

  14. High-G testing of MEMS mechanical non-volatile memory and silicon...

    Office of Scientific and Technical Information (OSTI)

    High-G testing of MEMS mechanical non-volatile memory and silicon re-entry switch. Citation Details In-Document Search Title: High-G testing of MEMS mechanical non-volatile memory ...

  15. Hydrogeochemical investigations in support of well logging operations at the Zunil geothermal field, Guatemala

    SciTech Connect

    Adams, A.; Golf, F.; Trujillo, P.E. Jr.; Counce, D.; Archuleta, J.; Dennis, B. ); Medina, V. . Inst. Nacional de Electrificacion)

    1990-01-01

    A suite of 41 thermal and nonthermal waters in the Zunil-Quetzaltenango region, Guatemala, were collected as part of a well logging operation conducted by the Instituto Nacional de Electrificacion (INDE) and Los Alamos National Laboratory. Both in situ and weirbox samples were collected in the Zunil geothermal field. The various data suggest that the reservoir at Zunil is geochemically inhomogeneous. Stable isotope data suggest recharge to the field comes primarily from the north and east whereas tritium data indicate that the reservoir waters may be 500 to 7500 years old. 14 refs., 4 figs., 3 tabs.

  16. Differentially-driven MEMS spatial light modulator

    DOEpatents

    Stappaerts, Eddy A.

    2004-09-14

    A MEMS SLM and an electrostatic actuator associated with a pixel in an SLM. The actuator has three electrodes: a lower electrode; an upper electrode fixed with respect to the lower electrode; and a center electrode suspended and actuable between the upper and lower electrodes. The center electrode is capable of resiliently-biasing to restore the center electrode to a non-actuated first equilibrium position, and a mirror is operably connected to the center electrode. A first voltage source provides a first bias voltage across the lower and center electrodes and a second voltage source provides a second bias voltage across the upper and center electrodes, with the first and second bias voltages determining the non-actuated first equilibrium position of the center electrode. A third voltage source provides a variable driver voltage across one of the lower/center and upper/center electrode pairs in series with the corresponding first or second bias voltage, to actuate the center electrode to a dynamic second equilibrium position.

  17. The use of a high-order MEMS deformable mirror in the Gemini Planet Imager

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Conference: The use of a high-order MEMS deformable mirror in the Gemini Planet Imager Citation Details In-Document Search Title: The use of a high-order MEMS deformable mirror in the Gemini Planet Imager We briefly review the development history of the Gemini Planet Imager's 4K Boston Micromachines MEMS deformable mirror. We discuss essential calibration steps and algorithms to control the MEMS with nanometer precision, including voltage-phase calibration and

  18. Novel Fabrication and Simple Hybridization of Exotic Material MEMS

    SciTech Connect

    Datskos, P.G.; Rajic, S.

    1999-11-13

    Work in materials other than silicon for MEMS applications has typically been restricted to metals and metal oxides instead of more ''exotic'' semiconductors. However, group III-V and II-VI semiconductors form a very important and versatile collection of material and electronic parameters available to the MEMS and MOEMS designer. With these materials, not only are the traditional mechanical material variables (thermal conductivity, thermal expansion, Young's modulus, etc.) available, but also chemical constituents can be varied in ternary and quaternary materials. This flexibility can be extremely important for both friction and chemical compatibility issues for MEMS. In addition, the ability to continually vary the bandgap energy can be particularly useful for many electronics and infrared detection applications. However, there are two major obstacles associated with alternate semiconductor material MEMS. The first issue is the actual fabrication of non-silicon devices and the second impediment is communicating with these novel devices. We will describe an essentially material independent fabrication method that is amenable to most group III-V and II-VI semiconductors. This technique uses a combination of non-traditional direct write precision fabrication processes such as diamond turning, ion milling, laser ablation, etc. This type of deterministic fabrication approach lends itself to an almost trivial assembly process. We will also describe in detail the mechanical, electrical, and optical self-aligning hybridization technique used for these alternate-material MEMS.

  19. Optically transduced MEMS magnetometer (Patent) | DOEPatents

    Office of Scientific and Technical Information (OSTI)

    Issue Date: 2014-03-18 OSTI Identifier: 1127102 Assignee: Sandia Corporation (Albuquerque, NM) SNL Patent Number(s): 8,674,689 Application Number: 13326,139 Contract Number: ...

  20. HEMORANDUH TO: FILE DATE

    Office of Legacy Management (LM)

    HEMORANDUH TO: FILE DATE 1123 lLjl ---WV---... FROM: P. s&w+ ---...v-----s-- SUBJECT: lJ+ - e;& SITE NAME: LJo"zL - L,' de Cd -J--h- ALTERNATE l --e-e-- ------w---...

  1. DATE SUBMITTED: GRADE LEVEL:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    two total hours per visit. For more students than that, please plan a visit on another date. To make a request, please complete the form below and submit it to...

  2. Dating the Vinland Map

    ScienceCinema

    None

    2013-07-17

    Scientists from Brookhaven National Laboratory, the University of Arizona, and the Smithsonian Institution used carbon-dating technology to determine the age of a controversial parchment that might be the first-ever map of North America.

  3. MEMS: A new approach to micro-optics

    SciTech Connect

    Sniegowski, J.J.

    1997-12-31

    MicroElectroMechanical Systems (MEMS) and their fabrication technologies provide great opportunities for application to micro-optical systems (MOEMS). Implementing MOEMS technology ranges from simple, passive components to complicated, active systems. Here, an overview of polysilicon surface micromachining MEMS combined with optics is presented. Recent advancements to the technology, which may enhance its appeal for micro-optics applications are emphasized. Of all the MEMS fabrication technologies, polysilicon surface micromachining technology has the greatest basis in and leverages the most the infrastructure for silicon integrated circuit fabrication. In that respect, it provides the potential for very large volume, inexpensive production of MOEMS. This paper highlights polysilicon surface micromachining technology in regards to its capability to provide both passive and active mechanical elements with quality optical elements.

  4. SAMPLE (Sandia Agile MEMS Prototyping, Layout tools, and Education)

    SciTech Connect

    Davies, B.R.; Barron, C.C.; Sniegowski, J.J.; Rodgers, M.S.

    1997-08-01

    The SAMPLE (Sandia Agile MEMS Protyping, Layout tools, and Education) service makes Sandia`s state-of-the-art surface-micromachining fabrication process, known as SUMMiT, available to US industry for the first time. The service provides a short cause and customized computer-aided design (CAD) tools to assist customers in designing micromachine prototypes to be fabricated in SUMMiT. Frequent small-scale manufacturing runs then provide SAMPLE designers with hundreds of sophisticated MEMS (MicroElectroMechanical Systems) chips. SUMMiT (Sandia Ultra-planar, Multi-level MEMS Technology) offers unique surface-micromachining capabilities, including four levels of polycrystalline silicon (including the ground layer), flanged hubs, substrate contacts, one-micron design rules, and chemical-mechanical polishing (CMP) planarization. This paper describes the SUMMiT process, design tools, and other information relevant to the SAMPLE service and SUMMiT process.

  5. GE MEMS for LTE Advanced Mobile Devices | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    GE MEMS Switch Technology Demonstrates Performance Which Could Meet Demands for Next-Generation "True 4G" Mobile Devices Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) GE MEMS Switch Technology Demonstrates Performance Which Could Meet Demands for Next-Generation "True 4G" Mobile Devices Prototype

  6. Neural probe design & MEMS technology | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Neural probe design accelerated with use of MEMS Technology Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) Neural probe design accelerated with use of MEMS Technology Craig Galligan 2015.04.01 In 2014, the bioelectrics team was tasked with exploring the neural probe technical space and identifying paths of interest. A

  7. History of Radiocarbon Dating

    DOE R&D Accomplishments

    Libby, W. F.

    1967-08-15

    The development is traced of radiocarbon dating from its birth in curiosity regarding the effects of cosmic radiation on Earth. Discussed in historical perspective are: the significance of the initial measurements in determining the course of developments; the advent of the low-level counting technique; attempts to avoid low-level counting by the use of isotopic enrichment; the gradual appearance of the environmental effect due to the combustion of fossil fuel (Suess effect); recognition of the atmosphere ocean barrier for carbon dioxide exchange; detailed understanding of the mixing mechanism from the study of fallout radiocarbon; determination of the new half-life; indexing and the assimilation problem for the massive accumulation of dates; and the proliferation of measurement techniques and the impact of archaeological insight on the validity of radiocarbon dates. (author)

  8. MEMORANDUfl J: FILE DATE

    Office of Legacy Management (LM)

    J: FILE DATE r so ---...w------m FROM: 9. 34oyc -w---...v----- SUBJECT: D3 Bo;s CL&;C J mL-;+J; - Rcc cap 049 'A :j: &336;s L-.fh w-f L-1 ALE"nirTE ---...

  9. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    PO Value: TBD Estimated Period of Performance: TBD Estimated RFPRFQ Release Date: FY 2016 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email:...

  10. Hidden Challenges to MEMS Commercialization: Design Realization and Reliability Assurance

    SciTech Connect

    McWhorter, P.J.; Miller, S.L.; Miller, W.M.; Rodger, M.S.; Yarberry, V.R.

    1999-01-20

    The successful commercialization of MicroElectroMechanical Systems (MEMS) is an essential prerequisite for their implementation in many critical government applications. Several unique challenges must be overcome to achieve this widespread commercialization. Challenges associated with design realization and reliability assurance are discussed, along with approaches taken by Sandia to successfully overcome these challenges.

  11. Sandia Advanced MEMS Design Tools, Version 2.2.5

    Energy Science and Technology Software Center

    2010-01-19

    The Sandia National Laboratories Advanced MEMS Design Tools, Version 2.2.5, is a collection of menus, prototype drawings, and executables that provide significant productivity enhancements when using AutoCAD to design MEMS components. This release is designed for AutoCAD 2000i, 2002, or 2004 and is supported under Windows NT 4.0, Windows 2000, or XP. SUMMiT V (Sandia Ultra planar Multi level MEMS Technology) is a 5 level surface micromachine fabrication technology, which customers internal and external tomore » Sandia can access to fabricate prototype MEMS devices. This CD contains an integrated set of electronic files that: a) Describe the SUMMiT V fabrication process b) Facilitate the process of designing MEMS with the SUMMiT process (prototype file, Design Rule Checker, Standard Parts Library) New features in this version: AutoCAD 2004 support has been added. SafeExplode ? a new feature that explodes blocks without affecting polylines (avoids exploding polylines into objects that are ignored by the DRC and Visualization tools). Layer control menu ? a pull-down menu for selecting layers to isolate, freeze, or thaw. Updated tools: A check has been added to catch invalid block names. DRC features: Added username/password validation, added a method to update the user?s password. SNL_DRC_WIDTH ? a value to control the width of the DRC error lines. SNL_BIAS_VALUE ? a value use to offset selected geometry SNL_PROCESS_NAME ? a value to specify the process name Documentation changes: The documentation has been updated to include the new features. While there exist some files on the CD that are used in conjunction with software package AutoCAD, these files are not intended for use independent of the CD. Note that the customer must purchase his/her own copy of AutoCAD to use with these files.« less

  12. Sandia Advanced MEMS Design Tools, Version 2.2.5

    SciTech Connect

    Yarberry, Victor; Allen, James; Lantz, Jeffery; Priddy, Brian; & Westling, Belinda

    2010-01-19

    The Sandia National Laboratories Advanced MEMS Design Tools, Version 2.2.5, is a collection of menus, prototype drawings, and executables that provide significant productivity enhancements when using AutoCAD to design MEMS components. This release is designed for AutoCAD 2000i, 2002, or 2004 and is supported under Windows NT 4.0, Windows 2000, or XP. SUMMiT V (Sandia Ultra planar Multi level MEMS Technology) is a 5 level surface micromachine fabrication technology, which customers internal and external to Sandia can access to fabricate prototype MEMS devices. This CD contains an integrated set of electronic files that: a) Describe the SUMMiT V fabrication process b) Facilitate the process of designing MEMS with the SUMMiT process (prototype file, Design Rule Checker, Standard Parts Library) New features in this version: AutoCAD 2004 support has been added. SafeExplode ? a new feature that explodes blocks without affecting polylines (avoids exploding polylines into objects that are ignored by the DRC and Visualization tools). Layer control menu ? a pull-down menu for selecting layers to isolate, freeze, or thaw. Updated tools: A check has been added to catch invalid block names. DRC features: Added username/password validation, added a method to update the user?s password. SNL_DRC_WIDTH ? a value to control the width of the DRC error lines. SNL_BIAS_VALUE ? a value use to offset selected geometry SNL_PROCESS_NAME ? a value to specify the process name Documentation changes: The documentation has been updated to include the new features. While there exist some files on the CD that are used in conjunction with software package AutoCAD, these files are not intended for use independent of the CD. Note that the customer must purchase his/her own copy of AutoCAD to use with these files.

  13. DATE: TO: FROM:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    POLICY FLASH 2015-30 DATE: TO: FROM: June 18, 2015 Procurement Directors/Contracting Officers ~~-- Chief Contract and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: Clarification on the Drug Testing Custody and Control Form for Department of Energy Contractors SUMMARY: Effective immediately, please ensure that all DOE contractors use the Forensic Drug Testing Custody and Control Form for their drug testing programs to comply with the

  14. Electrical power systems (Guatemala). Small generators and turbines, March 1992. Export trade information

    SciTech Connect

    Not Available

    1992-03-01

    In Guatemala the market for all types of electrical power generator systems, including parts and accessories, increased from US $19.5 million in 1990 to US $25.5 in 1991 (up 30.7 percent). Guatemalan import statistics list within this category all types of turbines and hydraulic electric power generating engines, regardless of their size or power generating capacity. Also included in the study are all types of electrical generators that are moved or operated by an attached fuel powered engine. The outlook for future market demand for electrical power generating systems looks promising for the next three or four years, with an estimated average increase of 7.3 percent per year.

  15. The direct application of geothermal energy to provide process heat in Guatemala

    SciTech Connect

    Altseimer, J.H.; Edeskuty, F.J.

    1987-09-01

    One part of an energy and resource development program in Central America is a geothermal process heat project in Guatemala. The feasibility of the direct heat application depends upon the production characteristics and reliability of the geothermal source. Other factors are the distance from the heat source, quantity of use, and capacity factor of the use facilities. Favorable conditions would be distances of under 5 km, heat requirements approximately equal to the well capacity, and high capacity factors (say 60% or higher) in the industrial plants. Depending upon the values of these factors, energy costs of less than $1.00/million Btus to greater than $5.00/million Btus have been estimated. This can be compared to about $5.00/million Btus for petroleum-based fuels in Guatemala in mid 1987. A survey was made of existing industries in the Amatitlan and Zunil geothermal areas. In both Amatitlan and Zunil the existing industries are spread out over an area too large to be called an optimum. The most promising situation for an industrial park development is at Amatitlan, except that proven production wells are not yet available. At Zunil, production wells exist, but a diverse nearby industrial base does not. However, both of these two areas are sufficiently promising to merit further development. Consequently, a demonstration project is underway aimed at the ultimate establishment of an agricultural processing center at Zunil. This center would have the capability to process agricultural products by dehydration, freezing, and cold storage. 2 refs., 4 figs., 2 tabs.

  16. DATE: REPLY TO

    Office of Legacy Management (LM)

    DOE F 1325.8 (NW ed States Governhent ilmemorandum DATE: REPLY TO ' bPfl29 1993 Al-fN OF: EM-421 (W. W illiams, 903-8149) SUBJECT: Authorization for Remedial Action at the Former Associate Aircraft Site, Fairfield, Ohio TO: Manager, DOE Oak Ridge Field Office This is to notify you that the Former Associated Aircraft Site in Fairfield, Ohio, is designated,for remedial action under the Formerly Utilized Sites Remedial Action Program (FUSRAP). This notification does not constitute a FUSRAP baseline

  17. SPECIAL DATE AND TIME

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SPECIAL DATE AND TIME Evolving views of the outer solar system: new insights from NASA's New Horizons mission's historic first Pluto fly-by Dr. Kimberly Ennico Smith NASA Ames Research Center, Astrophysics Branch April 11, 2016 2:00 p.m. - Wilson Hall, One West On July 14, 2015, after a 9.5 year trek across the solar system, NASA's New Horizons spacecraft successfully flew by Pluto and its system of moons, taking imagery, spectra and in-situ particle data. In this internet- information age, this

  18. Issuance Date:: February

    Office of Legacy Management (LM)

    Issuance Date:: February 11, 1966 POST-SHOT HYDROLOGI C SAFETY 68296 VUF-1014 FINAL REPORT FALLON, NEVADA OCTOBER 26, 1963 Hazleton-Nuclear Science Corporation October 30, 1965 SPONSORED BY THE ADVANCED RESEARCH PROJECTS AGENCY OF THE DEPARTMENT OF DEFENSE AND THE U. S.ATOMIC ENERGY COMMISSION VELA UNIFORM PROJECT LEG A L NOTICE This report was prepared as an account of Government sponsored work. Neither the United States, nor the Commission, nor any person acting on behalf of the Commission: A.

  19. United States Government DATE:

    Office of Legacy Management (LM)

    5oE(E;,8 ' 0 H .2+ L-1 United States Government DATE: MAR 0 8 1994 REPLY TO AlTN OF: EM-421 (W. A. Williams, 903-8149) SUBJECT: Authority Determination -- Former Herring-Hall-Marvin Safe Co., Hamilton, Ohio TO: The File The attached review documents the basis for determining whether the Department of Energy (DOE) has authority for taking remedial action at the former Herring-Hall-Marvin Safe Co. facility in Hamilton, Ohio, under the Formerly Utilized Sites Remedial Action Program (FUSRAP). The

  20. The Sandia MEMS passive shock sensor : FY08 design summary. (Technical

    Office of Scientific and Technical Information (OSTI)

    Report) | SciTech Connect Technical Report: The Sandia MEMS passive shock sensor : FY08 design summary. Citation Details In-Document Search Title: The Sandia MEMS passive shock sensor : FY08 design summary. This report summarizes design and modeling activities for the MEMS passive shock sensor. It provides a description of past design revisions, including the purposes and major differences between design revisions but with a focus on Revisions 4 through 7 and the work performed in fiscal

  1. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Conference: Thin Silicon MEMS Contact-Stress Sensor Citation Details In-Document Search Title: Thin Silicon MEMS Contact-Stress Sensor This thin, MEMS contact-stress (CS) sensor continuously and accurately measures time-varying, solid interface loads in embedded systems over tens of thousands of load cycles. Unlike all other interface load sensors, the CS sensor is extremely thin (< 150 {micro}m), provides accurate, high-speed measurements, and exhibits good stability over time with no loss

  2. Piston-Driven Fluid Ejectors In Silicon Mems

    DOEpatents

    Galambos, Paul C.; Benavides, Gilbert L.; Jokiel, Jr., Bernhard; Jakubczak II, Jerome F.

    2005-05-03

    A surface-micromachined fluid-ejection apparatus is disclosed which utilizes a piston to provide for the ejection of jets or drops of a fluid (e.g. for ink-jet printing). The piston, which is located at least partially inside a fluid reservoir, is moveable into a cylindrical fluid-ejection chamber connected to the reservoir by a microelectromechanical (MEM) actuator which is located outside the reservoir. In this way, the reservoir and fluid-ejection chamber can be maintained as electric-field-free regions thereby allowing the apparatus to be used with fluids that are electrically conductive or which may react or break down in the presence of a high electric field. The MEM actuator can comprise either an electrostatic actuator or a thermal actuator.

  3. Damage of MEMS thermal actuators heated by laser irradiation.

    SciTech Connect

    Walraven, Jeremy Allen; Klody, Kelly Anne; Sackos, John T.; Phinney, Leslie Mary

    2005-01-01

    Optical actuation of microelectromechanical systems (MEMS) is advantageous for applications for which electrical isolation is desired. Thirty-two polycrystalline silicon opto-thermal actuators, optically-powered MEMS thermal actuators, were designed, fabricated, and tested. The design of the opto-thermal actuators consists of a target for laser illumination suspended between angled legs that expand when heated, providing the displacement and force output. While the amount of displacement observed for the opto-thermal actuators was fairly uniform for the actuators, the amount of damage resulting from the laser heating ranged from essentially no damage to significant amounts of damage on the target. The likelihood of damage depended on the target design with two of the four target designs being more susceptible to damage. Failure analysis of damaged targets revealed the extent and depth of the damage.

  4. Damage of MEMS thermal actuators heated by laser irradiation.

    SciTech Connect

    Walraven, Jeremy Allen; Klody, Kelly Anne; Sackos, John T.; Phinney, Leslie Mary

    2004-11-01

    Optical actuation of microelectromechanical systems (MEMS) is advantageous for applications for which electrical isolation is desired. Thirty-two polycrystalline silicon opto-thermal actuators, optically-powered MEMS thermal actuators, were designed, fabricated, and tested. The design of the opto-thermal actuators consists of a target for laser illumination suspended between angled legs that expand when heated, providing the displacement and force output. While the amount of displacement observed for the opto-thermal actuators was fairly uniform for the actuators, the amount of damage resulting from the laser heating ranged from essentially no damage to significant amounts of damage on the target. The likelihood of damage depended on the target design with two of the four target designs being more susceptible to damage. Failure analysis of damaged targets revealed the extent and depth of the damage.

  5. Next-gen RF MEMS Switch for a Smarter, Faster Internet of Things...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    RF MEMS Switch for a Smarter, Faster Internet of Things Karen Lightman 2014.03.28 Big Data. Internet of Things. Quantified Self. Connected Home. Connected City. These...

  6. In the OSTI Collections: MEMS | OSTI, US Dept of Energy Office...

    Office of Scientific and Technical Information (OSTI)

    ... stockpiles-by using MEMS-based oscillators whose natural vibration frequencies change as the composition of gas around them changes and impedes their vibrations differently. ...

  7. The Sandia MEMS Passive Shock Sensor : FY08 testing for functionality...

    Office of Scientific and Technical Information (OSTI)

    Shock Sensor : FY08 testing for functionality, model validation, and technology readiness. Citation Details In-Document Search Title: The Sandia MEMS Passive Shock Sensor : FY08 ...

  8. Critical issues for the application of integrated MEMS/CMOS technologies to inertial measurement units

    SciTech Connect

    Smith, J.H.; Ellis, J.R.; Montague, S.; Allen, J.J.

    1997-03-01

    One of the principal applications of monolithically integrated micromechanical/microelectronic systems has been accelerometers for automotive applications. As integrated MEMS/CMOS technologies such as those developed by U.C. Berkeley, Analog Devices, and Sandia National Laboratories mature, additional systems for more sensitive inertial measurements will enter the commercial marketplace. In this paper, the authors will examine key technology design rules which impact the performance and cost of inertial measurement devices manufactured in integrated MEMS/CMOS technologies. These design parameters include: (1) minimum MEMS feature size, (2) minimum CMOS feature size, (3) maximum MEMS linear dimension, (4) number of mechanical MEMS layers, (5) MEMS/CMOS spacing. In particular, the embedded approach to integration developed at Sandia will be examined in the context of these technology features. Presently, this technology offers MEMS feature sizes as small as 1 {micro}m, CMOS critical dimensions of 1.25 {micro}m, MEMS linear dimensions of 1,000 {micro}m, a single mechanical level of polysilicon, and a 100 {micro}m space between MEMS and CMOS. This is applicable to modern precision guided munitions.

  9. In the OSTI Collections: MEMS | OSTI, US Dept of Energy Office...

    Office of Scientific and Technical Information (OSTI)

    ... entitled "MEMS based pyroelectric thermal energy harvester"DOepatents (US Patent ... much of this could be turned into useful energyWikipedia, but present-day conversion ...

  10. MEMS closed-loop control incorporating a memristor as feedback sensing

    Office of Scientific and Technical Information (OSTI)

    element (Journal Article) | DOE PAGES MEMS closed-loop control incorporating a memristor as feedback sensing element This content will become publicly available on December 1, 2016 Title: MEMS closed-loop control incorporating a memristor as feedback sensing element In this work the integration of a memristor with a MEMS parallel plate capacitor coupled by an amplification stage is simulated. It is shown that the MEMS upper plate position can be controlled up to 95% of the total gap. Due to

  11. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    thin, MEMS contact-stress (CS) sensor continuously and accurately measures time-varying, ... and exhibits good stability over time with no loss of calibration with load cycling. ...

  12. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Conference: Thin Silicon MEMS Contact-Stress Sensor Citation Details In-Document Search ... and exhibits good stability over time with no loss of calibration with load cycling. ...

  13. Performance and characterization of a MEMS-based device for alignment...

    Office of Scientific and Technical Information (OSTI)

    of a MEMS-based device for alignment and manipulation of x-ray nanofocusing optics Xu, Weihe Brookhaven National Laboratory, Upton, NY, 11973 USA; Lauer, Kenneth...

  14. MEMS-based thin-film fuel cells

    DOEpatents

    Jankowksi, Alan F.; Morse, Jeffrey D.

    2003-10-28

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  15. Friction of different monolayer lubricants in MEMs interfaces.

    SciTech Connect

    Carpick, Robert W. (University of Wisconsin, Madison, WI); Street, Mark D.; Ashurst, William Robert; Corwin, Alex David

    2006-01-01

    This report details results from our last year of work (FY2005) on friction in MEMS as funded by the Campaign 6 program for the Microscale Friction project. We have applied different monolayers to a sensitive MEMS friction tester called the nanotractor. The nanotractor is also a useful actuator that can travel {+-}100 {micro}m in 40 nm steps, and is being considered for several MEMS applications. With this tester, we can find static and dynamic coefficients of friction. We can also quantify deviations from Amontons' and Coulomb's friction laws. Because of the huge surface-to-volume ratio at the microscale, surface properties such as adhesion and friction can dominate device performance, and therefore such deviations are important to quantify and understand. We find that static and dynamic friction depend on the monolayer lubricant applied. The friction data can be modeled with a non-zero adhesion force, which represents a deviation from Amontons' Law. Further, we show preliminary data indicating that the adhesion force depends not only on the monolayer, but also on the normal load applied. Finally, we also observe slip deflections before the transition from static to dynamic friction, and find that they depend on the monolayer.

  16. Selective W for coating and releasing MEMS devices

    SciTech Connect

    Mani, S.S.; Fleming, J.G.; Sniegowski, J.J.; Boer, M.P. de; Irwin, L.W.; Walraven, J.A.; Tanner, D.M.; Lavan, D.A.

    2000-01-04

    Two major problems associated with Si-based MEMS (MicroElectroMechanical Systems) devices are stiction and wear. Surface modifications are needed to reduce both adhesion and friction in micromechanical structures to solve these problems. In this paper, the authors will present a CVD (Chemical Vapor Deposition) process that selectively coats MEMS devices with tungsten and significantly enhances device durability. Tungsten CVD is used in the integrated-circuit industry, which makes this approach manufacturable. This selective deposition process results in a very conformal coating and can potentially address both stiction and wear problems confronting MEMS processing. The selective deposition of tungsten is accomplished through the silicon reduction of WF{sub 6}. The self-limiting nature of this selective W deposition process ensures the consistency necessary for process control. The tungsten is deposited after the removal of the sacrificial oxides to minimize stress and process integration problems. Tungsten coating adheres well and is hard and conducting, requirements for device performance. Furthermore, since the deposited tungsten infiltrates under adhered silicon parts and the volume of W deposited is less than the amount of Si consumed, it appears to be possible to release stuck parts that are contacted over small areas such as dimples. The wear resistance of selectively coated W parts has been shown to be significantly improved on microengine test structures.

  17. Development of micro-electromechanical system (MEMS) cochlear biomodel

    SciTech Connect

    Ngelayang, Thailis Bounya Anak; Latif, Rhonira

    2015-05-15

    Human cochlear is undeniably one of the most amazing organs in human body. The functional mechanism is very unique in terms of its ability to convert the sound waves in the form of mechanical vibrations into the electrical nerve impulses. It is known that the normal human auditory system can perceive the audible frequency range between 20 Hz to 20 kHz. Scientists have conducted several researches trying to build the artificial basilar membrane in the human cochlea (cochlear biomodel). Micro-electromechanical system (MEMS) is one of the potential inventions that have the ability to mimic the active behavior of the basilar membrane. In this paper, an array of MEMS bridge beams that are mechanically sensitive to the perceived audible frequency has been proposed. An array of bridge bridge beams with 0.5 µm thickness and length varying from 200 µm to 2000 µm have been designed operate within the audible frequency range. In the bridge beams design, aluminium (Al), copper (Cu), tantalum (Ta) and platinum (Pt) have considered as the material for the bridge beam structure. From the finite element (FE) and lumped element (LE) models of the MEMS bridge beams, platinum has been found to be the best material for the cochlear biomodel design, closely mimicking the basilar membrane.

  18. Posting Date: 3/15/2016 Posting Close Date: 4

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3/15/2016 Posting Close Date: 4 th QTR 2016 North American Industry Classification System (NAICS) code for the request: 236210 Estimated Subcontract/PO Value: TBD Estimated Period of Performance: TBD Estimated RFP/RFQ Release Date: 4 th QTR 2016 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: shanej@lanl.gov Title: Transuranic (TRU) Liquid Waste (TLW) Project Description of Product or Service Required The Transuranic (TRU) Liquid Waste (TLW) Project is a congressionally

  19. Posting Date: July 16, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    July 16, 2015 Posting Close Date: TBD North American Industry Classification System (NAICS) code for the request: 812332 Estimated Subcontract/PO Value TBD Estimated Period of Performance 8-03-15 Estimated RFP/RFQ Release Date: TBD Estimated Award Date: FY 2018 Competition Type: Open Buyer Contact Email: pbeauparlant@lanl.gov Title: Radioactive Laundry and Respirator Services Description of Product or Service Required Radioactive Laundry and Respirator Services * Current forecasted bid

  20. Posting Date: July 16, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    July 16, 2015 Posting Close Date: TBD North American Industry Classification System (NAICS) code for the request: 812332 Estimated SubcontractPO Value TBD Estimated Period of...

  1. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: Itmartinez@lanl.gov Title: QA Support Description of Product or Service Required QA Support (Current...

  2. Validation of thermal models for a prototypical MEMS thermal actuator.

    SciTech Connect

    Gallis, Michail A.; Torczynski, John Robert; Piekos, Edward Stanley; Serrano, Justin Raymond; Gorby, Allen D.; Phinney, Leslie Mary

    2008-09-01

    This report documents technical work performed to complete the ASC Level 2 Milestone 2841: validation of thermal models for a prototypical MEMS thermal actuator. This effort requires completion of the following task: the comparison between calculated and measured temperature profiles of a heated stationary microbeam in air. Such heated microbeams are prototypical structures in virtually all electrically driven microscale thermal actuators. This task is divided into four major subtasks. (1) Perform validation experiments on prototypical heated stationary microbeams in which material properties such as thermal conductivity and electrical resistivity are measured if not known and temperature profiles along the beams are measured as a function of electrical power and gas pressure. (2) Develop a noncontinuum gas-phase heat-transfer model for typical MEMS situations including effects such as temperature discontinuities at gas-solid interfaces across which heat is flowing, and incorporate this model into the ASC FEM heat-conduction code Calore to enable it to simulate these effects with good accuracy. (3) Develop a noncontinuum solid-phase heat transfer model for typical MEMS situations including an effective thermal conductivity that depends on device geometry and grain size, and incorporate this model into the FEM heat-conduction code Calore to enable it to simulate these effects with good accuracy. (4) Perform combined gas-solid heat-transfer simulations using Calore with these models for the experimentally investigated devices, and compare simulation and experimental temperature profiles to assess model accuracy. These subtasks have been completed successfully, thereby completing the milestone task. Model and experimental temperature profiles are found to be in reasonable agreement for all cases examined. Modest systematic differences appear to be related to uncertainties in the geometric dimensions of the test structures and in the thermal conductivity of the

  3. Micro Electro-Mechanical System (MEMS) Pressure Sensor for Footwear

    DOEpatents

    Kholwadwala, Deepesh K.; Rohrer, Brandon R.; Spletzer, Barry L.; Galambos, Paul C.; Wheeler, Jason W.; Hobart, Clinton G.; Givler, Richard C.

    2008-09-23

    Footwear comprises a sole and a plurality of sealed cavities contained within the sole. The sealed cavities can be incorporated as deformable containers within an elastic medium, comprising the sole. A plurality of micro electro-mechanical system (MEMS) pressure sensors are respectively contained within the sealed cavity plurality, and can be adapted to measure static and dynamic pressure within each of the sealed cavities. The pressure measurements can provide information relating to the contact pressure distribution between the sole of the footwear and the wearer's environment.

  4. Tunable cavity resonator including a plurality of MEMS beams

    DOEpatents

    Peroulis, Dimitrios; Fruehling, Adam; Small, Joshua Azariah; Liu, Xiaoguang; Irshad, Wasim; Arif, Muhammad Shoaib

    2015-10-20

    A tunable cavity resonator includes a substrate, a cap structure, and a tuning assembly. The cap structure extends from the substrate, and at least one of the substrate and the cap structure defines a resonator cavity. The tuning assembly is positioned at least partially within the resonator cavity. The tuning assembly includes a plurality of fixed-fixed MEMS beams configured for controllable movement relative to the substrate between an activated position and a deactivated position in order to tune a resonant frequency of the tunable cavity resonator.

  5. Charging characteritiscs of ultrananocrystalline diamond in RF MEMS capacitive switches.

    SciTech Connect

    Sumant, A. V.; Goldsmith, C.; Auciello, O.; Carlisle, J.; Zheng, H.; Hwang, J. C. M.; Palego, C.; Wang, W.; Carpick, R.; Adiga, V.; Datta, A.; Gudeman, C.; O'Brien, S.; Sampath, S.

    2010-05-01

    Modifications to a standard capacitive MEMS switch process have been made to allow the incorporation of ultra-nano-crystalline diamond as the switch dielectric. The impact on electromechanical performance is minimal. However, these devices exhibit uniquely different charging characteristics, with charging and discharging time constants 5-6 orders of magnitude quicker than conventional materials. This operation opens the possibility of devices which have no adverse effects of dielectric charging and can be operated near-continuously in the actuated state without significant degradation in reliability.

  6. Dates Fact Sheet.cdr

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Concept DATES is a detection and security information/event management (SIEM) solution enabling asset owners to protect their energy control systems at the network, host, and device level from cyber attacks. DATES complements traditional, signature-based detection with multiple detection algorithms, including model- based and flow anomaly detection and cross-site attack correlation. The DATES detection and SIEM solution gives operators succinct and intuitive attack visualization, with attacks

  7. Dates Fact Sheet.cdr

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The DATES monitoring platform uses multiple algorithms to examine packet headers, including a Snort sensor enhanced with a SCADA-aware rule set, stateful protocol analysis, and a ...

  8. OTS NOTE DATE: TO: FROM:

    Office of Legacy Management (LM)

    The .attached memorandum and supporting documents are the basis for our recommendation to ... Documents discovered to date which indicate use or handling of radioactive material by ...

  9. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    The Sandia MEMS passive shock sensor : FY08 design summary.","Walraven, Jeremy Allen; Baker, Michael Sean; Clemens, Rebecca C.; Mitchell, John Anthony; Brake, Matthew Robert; Epp,...

  10. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Predicting fracture in micron-scale polycrystalline silicon MEMS structures.","Hazra, Siddharth S. (Carnegie Mellon University, Pittsburgh, PA); de Boer, Maarten Pieter (Carnegie...

  11. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    CA","USDOE","42 ENGINEERING; 42 ENGINEERING; ACCURACY; ACTUATORS; SILICON",,"This thin, MEMS contact-stress sensor continuously and accurately measures time-varying, solid...

  12. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    PACKAGING; PERFORMANCE; SILICON; THICKNESS",,"This work offers the first, thin, MEMS contact-stress (CS) sensor capable of accurate in situ measruement of time-varying,...

  13. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    environment and reactor core pulse tests, we initiated radiation testing of several MEMS piezoresistive accelerometers and pressure transducers to ascertain their radiation...

  14. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    US201114%%341","Conference",,,"Conference: Presented at: MEMS Adaptive Optics V, San Frnacisco, CA, United States, Jan 27 - Jan 27, 2011","Lawrence Livermore...

  15. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    of a MEMS-based device for alignment and manipulation of x-ray nanofocusing optics","Xu, Weihe Brookhaven National Laboratory, Upton, NY, 11973 USA; Lauer, Kenneth...

  16. Capture of Anastrepha species (Diptera: Tephritidae) with multilure traps and biolure attractants in Guatemala

    SciTech Connect

    Martinez, A.J.; Salinas, E.J.; Rendon, P.

    2007-03-15

    Two trapping systems were compared in a study in Guatemala during the wet season, May through Dec 2001. Trap/lure combinations consisting of green or yellow-based plastic McPhail-like traps baited with a synthetic 2-component lure (putrescine and ammonium acetate) and 300 mL of propylene glycol antifreeze as a preservative were compared to the traditional glass McPhail baited with torula yeast/borax and 300 mL of water. Both systems captured several key Anastrepha species including Anastrepha ludens Loew, A. obliqua, Macquart, A. serpentina Weidemann, A. striata Schiner, A. distincta Greene, A. fraterculus Weidemann as well as Ceratitis capitata Weidemann. Additionally, 13 other Anastrepha spp. were captured with the synthetic lure. The plastic traps captured more key flies than the McPhail trap except for A. distincta where there were no significant differences between the yellow-based plastic trap and the McPhail trap and no significant differences between any trap and lure for trapping A. fraterculus. The synthetic lure lasted 10 weeks. The sex ratio was female-biased for almost all captured key species in both systems. Moreover, there were significant numbers of captured nontarget insects in all traps; however, the captured flies in those traps with the synthetic lure were not adversely affected by these insects. Propylene glycol-based antifreeze was a superior preservative when compared to borax/water. (author) [Spanish] En Guatemala, se compararon dos sistemas de trampeo durante la epoca lluviosa de Mayo a Deciembre, 2001. Combinaciones de trampa/atrayente que consistieron de trampas de plastico con bases verdes o amarillos y con atrayentes sinteticos (acetate de amoniaco y putrecina) fueron comparadas con el sistema de trampeo tradicional McPhail de vidrio cebada con torula y borax en agua. Los dos sistemas capturaron moscas del genero Anastrepha incluyendo Anastrepha ludens Loew, A. obliqua, Macquart, A. serpentina Weidemann, A. striata Schiner, A

  17. Progress toward a MEMS fabricated 100 GHz oscillator.

    SciTech Connect

    Loubriel, Guillermo Manuel; Lemp, Thomas; Weyn, Mark L.; Coleman, Phillip Dale; Rowley, James E.

    2006-02-01

    This report summarizes an LDRD effort which looked at the feasibility of building a MEMS (Micro-Electro-Mechanical Systems) fabricated 100 GHz micro vacuum tube. PIC Simulations proved to be a very useful tool in investigating various device designs. Scaling parameters were identified. This in turn allowed predictions of oscillator growth based on beam parameters, cavity geometry, and cavity loading. The electron beam source was identified as a critical element of the design. FEA's (Field Emission Arrays) were purchased to be built into the micro device. Laboratory testing of the FEA's was also performed which pointed out care and handling issues along with maximum current capabilities. Progress was made toward MEMS fabrication of the device. Techniques were developed and successfully employed to build up several of the subassemblies of the device. However, the lower wall fabrication proved to be difficult and a successful build was not completed. Alternative approaches to building this structure have been identified. Although these alternatives look like good solutions for building the device, it was not possible to complete a redesign and build during the timeframe of this effort.

  18. Satellites images, digitized topography, and the recognition of the Xela Caldera, Quezaltenango Valley, Guatemala

    SciTech Connect

    Foley, D. . Dept. of Earth Sciences); McEwen, A.; Duffield, W. ); Heiken, G. )

    1992-01-01

    The authors propose, based on reconnaissance geology studies and interpretation of landforms as depicted by Landsat Thematic Mapper (TM) images combined with digitized topography, that the Quezaltenango basin of Guatemala is part of a caldera. The Quezaltenango basin is an elliptical depression, about 12 by 25 km and about 500 m deep. The proposed Xela Caldera extends beyond the basin more than 10 km to the north. The geomorphological features of the area that are typical of a geologically young large-scale caldera include bounding walls that have steep interior and gentle exterior slopes; broad flat areas at the base of the walls; at least one large block, about 3 by 12 km, that only partly floundered as the caldera collapsed; resurgence of a younger volcanic dome, flow and small-scale caldera complex (last active in 1818); younger volcanoes located along the structural margin of the major caldera (one of which is currently active) lobate features on the caldera margins that may indicate a multiple sequence of eruptions; and an active, high-temperature geothermal system. The valley is coincident with a gravity low. Extensive ash-flow tuff sheets that have no identified source are located north of the caldera, and may be the outflow deposits. The Xela caldera is similar in size to the Atitlan caldera, which lies about 50 km southeast of Quezaltenango. The Xela Caldera, if confirmed by future studies, may contain undiscovered geothermal resources, may present a significant geologic hazard to the more than 400,000 people who occupy the Quezaltenango valley, and may be a new member of the list of magmatic systems that have the capability to change global climate for several years.

  19. Property:Deployment Date | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Deployment Date Jump to: navigation, search Property Name Deployment Date Property Type String Retrieved from "http:en.openei.orgwindex.php?titleProperty:DeploymentDate&oldid...

  20. Property:Achievement Date | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Achievement Date Jump to: navigation, search Property Name Achievement Date Property Type String Retrieved from "http:en.openei.orgwindex.php?titleProperty:AchievementDate&ol...

  1. The use of a high-order MEMS deformable mirror in the Gemini Planet Imager

    SciTech Connect

    Poyneer, L A; Bauman, B; Cornelissen, S; Jones, S; Macintosh, B; Palmer, D; Isaacs, J

    2010-12-17

    We briefly review the development history of the Gemini Planet Imager's 4K Boston Micromachines MEMS deformable mirror. We discuss essential calibration steps and algorithms to control the MEMS with nanometer precision, including voltage-phase calibration and influence function characterization. We discuss the integration of the MEMS into GPI's Adaptive Optics system at Lawrence Livermore and present experimental results of 1.5 kHz closed-loop control. We detail mitigation strategies in the coronagraph to reduce the impact of abnormal actuators on final image contrast.

  2. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    300M Estimated Period of Performance: 5 Years Estimated RFP/RFQ Release Date: 2 nd QTR 2018 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: pia@lanl.gov Title: Staff Augmentation Services Description of Product or Service Required Staff Augmentation Services (Current subcontract expires 2019) * Current forecasted bid opportunities are subject to change or cancellation due to scope, mission, or funding requirements. * Some procurements are reserved for small businesses. Note

  3. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    700K Estimated Period of Performance: TBD Estimated RFP/RFQ Release Date: FY 2018 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: m_armijo@lanl.gov Title: Poly Com Phones Description of Product or Service Required Poly Com Phones (Current subcontracts expires 2019) * Current forecasted bid opportunities are subject to change or cancellation due to scope, mission, or funding requirements. * Some procurements are reserved for small businesses. Note the competition type on the

  4. Catalog of historic seismicity in the vicinity of the Chixoy-Polochic and Motagua faults, Guatemala. Final report

    SciTech Connect

    White, R.A.

    1984-01-01

    A new catalog of shallow historical earthquakes for the region of the Caribbean-North American plate boundary in Guatemala is presented. The catalog is drawn mostly from original official documents that are considered to be primary accounts. It contains 25 damaging earthquakes, 18 of which have not previously been published. The catalog is estimated to be complete for magnitude 6.5 earthquakes since 1700 for most of the study area. The earthquakes in this catalog can be grouped into periods of seismic activity alternating with extended periods of seismic quiescence. The periods of seismic activity appear to be terminated by the major rupture of either the Chixoy-Polochic or Motagua faults, the two principal sub-parallel faults that form the transform plate boundary in Guatemala. Although the plate boundary is not simple in this region, the alternating nature of the regional seismic activity with seismic quiescence is a classic example of the seismic cycle concept. It is estimated that a very large earthquake (M 7.5) may recur along a transform boundary fault between 160 to 300 years after the previous such earthquake in the region. 20 refs., 5 figs.

  5. Inertial sensing microelectromechanical (MEM) safe-arm device

    DOEpatents

    Roesler, Alexander W.; Wooden, Susan M.

    2009-05-12

    Microelectromechanical (MEM) safe-arm devices comprise a substrate upon which a sense mass, that can contain an energetic material, is constrained to move along a pathway defined by a track disposed on the surface of the substrate. The pathway has a first end comprising a "safe" position and a second end comprising an "armed" position, whereat the second end the sense mass can be aligned proximal to energetic materials comprising the explosive train, within an explosive component. The sense mass can be confined in the safe position by a first latch, operable to release the sense mass by an acceleration acting in a direction substantially normal to the surface of the substrate. A second acceleration, acting in a direction substantially parallel to the surface of the substrate, can cause the sense mass to traverse the pathway from the safe position to the armed position.

  6. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    work offers the first, thin, MEMS contact-stress (CS) sensor capable of accurate in situ measruement of time-varying, contact-stress between two solid interfaces (e.g. in vivo ...

  7. Performance of a MEMS-base Adaptive Optics Optical Coherency Tomography System

    SciTech Connect

    Evans, J; Zadwadzki, R J; Jones, S; Olivier, S; Opkpodu, S; Werner, J S

    2008-01-16

    We have demonstrated that a microelectrical mechanical systems (MEMS) deformable mirror can be flattened to < 1 nm RMS within controllable spatial frequencies over a 9.2-mm aperture making it a viable option for high-contrast adaptive optics systems (also known as Extreme Adaptive Optics). The Extreme Adaptive Optics Testbed at UC Santa Cruz is being used to investigate and develop technologies for high-contrast imaging, especially wavefront control. A phase shifting diffraction interferometer (PSDI) measures wavefront errors with sub-nm precision and accuracy for metrology and wavefront control. Consistent flattening, required testing and characterization of the individual actuator response, including the effects of dead and low-response actuators. Stability and repeatability of the MEMS devices was also tested. An error budget for MEMS closed loop performance will summarize MEMS characterization.

  8. DATE:

    Office of Environmental Management (EM)

    Office of Policy, OAPM | Department of Energy Current Trends in Policy - What's new? - Berta Schreiber, Director, Office of Policy, OAPM Current Trends in Policy - What's new? - Berta Schreiber, Director, Office of Policy, OAPM New Uniform Financial Assistance Regulations DOE's financial assistance regulatory framework and environment have changed. In December, OMB issued new uniform regulations for financial assistance that combined previous OMB circulars under one set of regulations. Key

  9. DATE:

    Office of Legacy Management (LM)

    ... BWXaU N.Y.S. Dapartment Of. Law New York. New York ,.. --- . (' ? ( .' 6llMdL.I L..rn )' 1*e . -... . . . . . . . . . cnv. Prot. I)ur*au no&L 17-f R.Y.S. Daparbnent of Law ...

  10. DATE:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    28 am, Mar 26, 2012 119 X X RPP-40149-VOL1, Rev. 2 Integrated Waste Feed Delivery Plan Volume 1 - Process Strategy E. B. West Washington River Protection Solutions, LLC P. J. Certa, T. M. Hohl, J. S. Ritari, B. R. Thompson Washington River Protection Solutions, LLC C. C. Haass Columbia Nuclear International, LLC Richland, WA 99352 U.S. Department of Energy Contract DE-AC27-08RV14800 EDT/ECN: UC: Cost Center: Charge Code: B&R Code: Total Pages: Key Words: Abstract: The Integrated Waste Feed

  11. DATE:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8:05 am, Mar 26, 2012 X X 189 RPP-40149-VOL3, Rev. 2 Integrated Waste Feed Delivery Plan Volume 3 - Project Plan J. S. Rodriguez Washington River Protection Solutions, LLC J. W. Kelly, D. C. Larsen Washington River Protection Solutions, LLC Richland, WA 99352 U.S. Department of Energy Contract DE-AC27-08RV14800 EDT/ECN: UC: Cost Center: Charge Code: B&R Code: Total Pages: Key Words: Abstract: The Integrated Waste Feed Delivery Plan (IWFDP) describes how waste feed will be delivered to the

  12. DATE:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... provided in the following documents: * EPARODR10-00121, Record of Decision for the USDOE Hanford 100-Area, Benton County, Washington * EPA (2001), USDOE Hanford Site, First ...

  13. Dated:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CERTIFICATE OF SERVICE I hereby certify that a copy of the STIPULATED JOINT MOTION TO STAY THE SCHEDULING ORDER has been sent electronically to the following on May 12, 2015:...

  14. Date:

    Office of Legacy Management (LM)

    ... November, 2013. Statistical Analysis of Rocky Flats Site-Specific Data. Tetra Tech. ... Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page 1 of 2 RFETS OLF ...

  15. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    has been revised. The subject form has been posted on the DOE Financial Assistance web page on the Recipients Page under the Financial Assistance Forms and Information for...

  16. Date

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... We will provide a letter template to you. Sandia will treat all aspects of this engagement as privileged and confidential. We will not disclose any engagement-related information ...

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CAES-061 292012 Rev. 04 CAES Microscopy & Characterization Suite (MaCS) Service Request Form Page 1 of 2 Contact Information: Requestor Name: *Researcher Name: Requestor Email:...

  18. DATE:

    Office of Legacy Management (LM)

    by Altrachem, Inc., phone number 726-8659. The structure is multi-story (high bay) and is in fairly poor condition, but it appears a portion of it is used for office space. ...

  19. DATE:

    Office of Environmental Management (EM)

    Interest Certificates, Source Selection Training and Roles and Responsibilities. This Flash and its attachments will be available online within a day, at the following website: ...

  20. DATE:

    Energy.gov [DOE] (indexed site)

    For questions concerning this policy flash, contact Kevin M. Smith at (202) 287-1614 or at Kevin.M.Smith@hq.doe.gov. Contracting Officers should contact their field counsel, the ...

  1. [DATE

    Office of Environmental Management (EM)

    ... to strengthen the clean energy innovation ecosystem in ... from industry, academia, research laboratories, government ... constitute a formal solicitation for proposals or abstracts. ...

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    WAI will provide ecological support to DOE-ID for land and wildlife management issues. WAI ... WaterWell Use - Use of waterwell is concurrent with the Experimental Field Station. Work ...

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    a civilian reactor station, the Light Water Breeder Reactor for the Shippingport Station. ... DOE-ID NEPA CX DETERMINATION IDAHO NATIONAL LABORATORY Page 2 of 3 CX Posting No.: ...

  4. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: Implementation of Division F, Title I, Title II, and Title III ...

  5. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and Financial Assistance Policy Division Office of Policy Office of Acquisition and Project Management SUBJECT: Implementation of Division D, Titles III and V, and Division E, ...

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    effects of radiation damage, and fission products behavior at the IPyCSiC interface. ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    of Advanced Fuels: Modeling Burnup Behavior SECTION B. Project Description The ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    SECTION A. Project Title: Tribological Behavior of Structural Materials in High ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    The neutronic behavior of a light water reactor will be simulated in real-time and coupled ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Experiments will be conducted to investigate the water flow behavior within the risers and ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    of Post-Accident iPWR Aerosol Behavior - Electric Power Research Institute, Inc. ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and pulsed electric currents on the deformation behavior of Fe-14Cr based NFA steels. ... References: B3.6 Siting, construction, modification, operation, and decommissioning of ...

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    at Raft River by the United States Geological Survey (USGS) in non-INL related work ... INL will collect samples of the tracers prior to injection to verify concentration, ...

  14. DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Corporations Section 743 Any Payment for the Election for a Federal Office or to a Political Committee Section 3003 Reporting on Conference Spending 2 The FAL addresses the ...

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Team. The subcontractor will be required to have spill control equipment on site. A propane tank that will be relocated from CFA-666 to CFA-661 will have it's location...

  16. DATE:

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... two components (aluminum and chromium) met ... RPP-40149-VOL2, Rev. 2 9-2 5. Conduct studies to ... use for WFD operations 8. Update the operating scenario and process strategy, if ...

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Nuclear Fabrication Consortium SECTION B. Project Description The mission of the NFC will be accomplished through both public and private funding. The list below outlines the programs that have identified for initiation under the initial DOE funding. Additional programs are envisioned and will be proposed, subject to any applicable budget constraints, to DOE-NE as they become known to EWI, the NFC, and DOE. 1. Automation of Advanced Non-Destructive Evaluation (NDE)

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    12 SECTION A. Project Title: Reactor Power Up Rate, Compressor Replacement, Neutron Radiography Restore, Liquid Scintillation Counter - Texas A&M University SECTION B. Project Description Texas A&M will replace an existing 54-year old compressor to improve reliability of the reactor operation and purchase a liquid scintillator counter to give the facility the ability to perform tritium analysis. Additionally, under NRC License R-83, Texas A&M will up rate the reactor power from 1MW

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    42 SECTION A. Project Title: Innovative Manufacturing Process for Improving the Erosion/Corrosion Resistance of Power Plant Components via Powder Metallurgy & Hot Isostatic Processing Methods - Electric Power Research Institute SECTION B. Project Description The objective of this project is to conduct the necessary design, processing, manufacturing, and validation studies to assess powder metallurgy/hot isostatic processing (PM/HIP) as a method to produce very large near-net shaped (NNS)

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4-006 SECTION A. Project Title: Design of SC Walls and Slabs for Impulsive Loading - Purdue University SECTION B. Project Description Purdue University proposes to analytically investigation the behavior and strength of modular steel-plate composite (SC) slabs and floor systems, analytically investigate the behavior and performance of SC structures subjected to impulsive loading including blast effects, experimentally verify the findings of analytical investigations, and develop design

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Full-field Temperature and Strain Measurements at Extreme Temperatures - Utah State University SECTION B. Project Description Utah State University proposes to purchase and install a multi-camera system for recording simultaneous full-field temperature and strain measurements for thermos-mechanically loaded nuclear materials under extreme environments. SECTION C. Environmental Aspects / Potential Sources of Impact The action consists of purchasing equipment to be used

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    09 SECTION A. Project Title: High Temperature Melt Solution Calorimeter: The Thermodynamic Characterization of Oxides n Nuclear Energy - Clemson University SECTION B. Project Description Clemson University proposes to purchase a High Temperature Melt Calorimeter that will support ongoing work to advance the fundamental understanding of high-temperature ceramic materials used in nuclear energy applications through the use of melt solution calorimetry resulting in uniquely determined experimental

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Enhance Nuclear Education and Training at Aiken Technical College SECTION B. Project Description Aiken Technical College proposes to purchase and install a flow loop trainer to educate and train students for careers in the nuclear industry. SECTION C. Environmental Aspects / Potential Sources of Impact Chemical Use/Storage / Chemical Waste Disposal - No waste is generated during the manufacturing process, however each machine is equipped with a closed loop system

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Nuclear Engineering and Science Equipment for Strategic Fuels Analysis Research in the Nuclear and Radiological Engineering Program at the Georgia Institute of Technology SECTION B. Project Description Georgia Tech proposes to purchase and install an imaging system to go with the existing x-ray source in a fully equipped irradiation laboratory, addition of spectroscopic instruments to perform energy resolution measurements in supplement of imaging, and tissue

  5. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Development of a Research and Education Facility for Evaluation of Environmental Degradation of Advanced Nuclear Materials in Simulated LWR Conditions - University of Idaho SECTION B. Project Description The University of Idaho proposes to a) upgrade the existing static autoclave system in order to simulate the light water reactor conditions without contaminating the high temperature waster with corrosion products; b) install a rotating a cylinder system in the

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Automated Chromatography System for Purification of New Reagents for An/Ln Extraction and Separation - Washington State University SECTION B. Project Description Washington State University proposes to purchase and install a Teledyne Isco CombiFlash Rf+ Luman with UV-Vis and Evaporative Light Scattering Detector to improve the current purification abilities for newly designed and synthesized organic ligands. SECTION C. Environmental Aspects / Potential Sources of

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: In situ Raman Spectroscopy to Enhance Nuclear Materials Research and Education - University of Nevada Reno SECTION B. Project Description The University of Nevada Reno proposes to purchase and install a Raman Spectrometer on the existing water loop for in situ analysis of materials to be used to characterize the surface chemistry of various alloys, understand the effect of mechanical stress on corrosion behavior of alloys, and improve nuclear education at UNR. SECTION

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Nuclear Materials Science and Instrumentation Research Infrastructure Upgrade at Pennsylvania State University SECTION B. Project Description Pennsylvania State University proposes to purchase and install an inductively coupled plasma - atomic emission spectrometer (ICP- AES), glass melting furnace and crucible, and data acquisition system for use in research and education. SECTION C. Environmental Aspects / Potential Sources of Impact Chemical Use/Storage / Chemical

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 SECTION A. Project Title: Equipment for Education, Training, and Research in Advanced Instrumentation for Fluoride Salt Cooled High-Temperature Reactors (FHRs) at The Ohio State University SECTION B. Project Description Ohio State University proposes to purchase and install the equipment necessary to develop and benchmark a non-invasive velocity measurement technique for salt based on short-lived activation products decay, a Fourier Transform Infrared spectrometer to measure the optical

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: Impact Test Machine for Nuclear Containment Research - University of Houston SECTION B. Project Description The University of Houston proposes to upgrade the university's Universal Element Tester with an Impact Test Machine to advance the study on impact and shear behavior of the nuclear containment structure. SECTION C. Environmental Aspects / Potential Sources of Impact The action consists of purchasing equipment to be used in research and teaching. The action would

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Integrated Approach to Fluoride High Temperature Reactor (FHR) Technology and Licensing Challenges - Georgia Tech SECTION B. Project Description Georgia Tech, in collaboration with Ohio State University, Texas A&M, Texas A&M - Kingsville, Oak Ridge National Laboratory and several industry and international partners, proposes to follow an integrated approach to address several key technology gaps associated with fluoride high temperature reactors, thereby

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Design/Prototype Fabricate Rail Car for High Rad Mat Transport - Kasgro Rail Corp. SECTION B. Project Description The purpose of this proposal is to obtain a certification from the American Association of Railroads (AAR) on a fully constructed and tested railcar system for transporting spent nuclear fuel (SNF). The transport system will allow transporting SNF by rail to occur at normal rail speeds thus eliminating delays on rail lines and all more rapid transport of

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5-085 SECTION A. Project Title: Deep Borehole Field Test (DBFT) Characterization Borehole Drilling and Testing, Pierce County, N.D. - Battelle Memorial Institute SECTION B. Project Description The primary goal of the DBFT program is to drill a 5,000-meter-deep characterization borehole with a 3,000-meter open-hole section across crystalline bedrock, and to conduct scientific testing to characterize the hydrogeologic, geochemical, and geomechanical properties of the near-borehole host rock. The

  14. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Solving Critical Challenges to Enable the Xe-100 Pebble Bed Advanced Reactor Concept - X Energy, LLC SECTION B. Project Description X Energy, in collaboration with BWXT Nuclear Energy, Inc. (BWXT), Oak Ridge National Laboratory (ORNL), Idaho National Laboratory (INL), and Oregon State University (OSU), proposes to leverage prior and current DOE programs and previous Xe-100 design investments to further key pebble-bed high temperature gas-cooled reactor (HTGR)

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: DOE-EM Traineeship in Robotics - Carnegie Mellon University SECTION B. Project Description Carnegie Mellon University (CMU) proposes to develop an Environmental Management (EM) Traineeship in robotics. The traineeship will build on the existing core robotics curricula while introducing specialized topics that ensure a thorough understanding of EM-relevant concerns. The proposed program will also incorporate supervised research opportunities with CMU faculty advisors

  16. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 SECTION A. Project Title: Integrated Effects Testing & Molten Chloride Fast Reactor Development - Southern Company Services, Inc. SECTION B. Project Description Southern Company Services, in collaboration with TerraPower, LLC and Oak Ridge National Laboratory (ORNL), proposes to advance the technology readiness of the Molten Chloride Fast Reactor (MCFR) technology under development by TerraPower in support of commercial offering by 2035. To support the licensing, detail design, and

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    07 SECTION A. Project Title: Experimentally Validated Computational Modeling of Creep and Creep-Cracking for Nuclear Concrete Structures - Texas Engineering Experiment Station (TEES - TAMU) SECTION B. Project Description Texas A&M University proposes to 1) devise new, 3D concrete material constitutive models base on 3D creep and cracking experiments, 2) establish an improved large-scale structural modeling approach that considers full 3D stress fields rather than plane stress as has been

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: CFA-16-12043: Using Radioiodine Speciation to Address Environmental Remediation and Waste Stream Sequestration Problems at the Fukushima Daiichi Nuclear Power Plant and a DOE Site, MS-EM-1: Radioactive Waste Management - Texas A&M University - Galveston SECTION B. Project Description Texas A&M University - Galveston proposes to 1) measure radioiodine speciation to provide information that will be used in the development of species-specific stabilization

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Development and Integration of Light Water Reactor (LWR) Materials Corrosion Degradation Codes into Grizzly - University of California at Berkeley SECTION B. Project Description The University of California, Berkeley proposes to develop deterministic, physico chemical models for predicting the accumulation of localized corrosion damage in the primary coolant circuits of the currently operating fleet of light water reactors. The successful modeling of the accumulation

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: CFA-16-10285: Tribological Damage Mechanisms from Experiments and Validated Simulations of Alloy 800H and Inconel 617 in a Simulated HTGR/VHTR Helium Environment - Purdue University SECTION B. Project Description Purdue University proposes to perform a series of tribological experiments on Alloy 800H and Inconel 617 in a simulated He environment with controlled concentrations of gaseous species follow by microstructure characterization using electron microscopy,

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Integrated Computational Materials Engineering (ICME) and In-site Process Monitoring for Rapid Qualification of Components Made by Laser-Based Powder Bed Additive Manufacturing (AM) Processes for Nuclear Structural and Pressure Boundary Applications - Electric Power Research Institute SECTION B. Project Description The Electric Power Research Institute (EPRI) proposes to develop an innovative qualification strategy for complex nuclear components produced by laser

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 SECTION A. Project Title: Online Monitoring System for Concrete Structures Affected by Alkali-Silica Reaction (ASR) - University of Nebraska, Lincoln SECTION B. Project Description The University of Nebraska, in collaboration with the University of Alabama, proposes to develop and employ two highly sensitive active and passive stress wave sensing techniques and advanced signal processing algorithms to monitor and quantify alkali-silica reaction-induced microcracking damage in concrete. SECTION

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Feasibility of Combined Ion-Neutron Irradiation for Accessing High Dose Levels - University of Michigan SECTION B. Project Description The University of Michigan, in collaboration with the Oak Ridge National Laboratory (ORNL), proposes to assess the feasibility of re-irradiating existing neutron irradiated alloys 304SS and 316SS to high dose levels using ion irradiation, for the purpose of achieving microstructures that represent those from reactor irradiation to

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    19 SECTION A. Project Title: Validation of RELAP-7 for forced convection and natural circulation reactor flows - University of Illinois at Urbana-Champaign SECTION B. Project Description The University of Illinois at Urbana-Champaign proposes to aid in the development of RELAP-7 through required experimental and computational efforts. The validation of the two-phase modeling capability of RELAP-7 will be accomplished through a series of tasks which include synthesis of existing forced convective

  5. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Overcoming Kinetic Barriers to Actinide Recovery in ALSEP - Colorado School of Mines SECTION B. Project Description The Colorado School of Mines, in collaboration with the Argonne National Laboratory, proposes to test the hypothesis that slow kinetics in the solvent separation process ALSEP and its related separation systems, for the recovery of Am from the fission product lanthanide elements, originate in the poor ability of the aqueous complexants to penetrate and

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Immobilization of High-Level Waste Salt in Dechlorinated Zeolite Waste Forms - University of Utah SECTION B. Project Description The University of Utah, in collaboration with Idaho National Laboratory, proposes to evaluate the main challenges associated with the disposal of electrorefiner salt: maximization of fission products in a final waste form and the associated processing costs. The proposed research will focus on two main objectives to overcome these process-

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: ASME Code Application of the Compact Heat Exchanger for High Temperature Nuclear Service - North Carolina State University SECTION B. Project Description North Carolina State University proposes to characterize the high temperature materials properties of a diffusion welded laminated structure and to develop the ASME Code methodologies for preventing failure of a printed channel and hybrid compact heat exchangers under sustained and cyclic pressure and thermal loading

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Integral System Testing for Prismatic Block Core Design HTGR - Oregon State University SECTION B. Project Description Oregon State University proposes to complete eight integral thermal-fluid tests investigating a range of gas reactor events. This is planned as a two-year project and will be conducted in a gas-reactor thermal-fluid facility that is already in operation. The overall objective of the test program will be to collect data that will fully cover the

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    28 SECTION A. Project Title: Localized Imaging, Surveying and Mapping for Nuclearized Underwater Robots - Carnegie Mellon University SECTION B. Project Description Carnegie Mellon University proposes to develop, demonstrate, and infuse a leap of sensing, robotics, spatial positioning and visualization capability into underwater nuclear operations relevant to DOE environmental management. The program will develop and demonstrate a prototype robotic system to maneuver in a water-filled basin,

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    30 SECTION A. Project Title: Additive Manufacturing of Functional Materials and Sensor Devices for Nuclear Energy Applications - Boise State University SECTION B. Project Description Boise State University proposes to procure an aerosol jet printer and establish additive manufacturing capability to accelerate research and development of integrated sensor systems for nuclear energy applications. Procuring a versatile aerosol jet printer that can directly print functional semiconductors, metals,

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: An Integrated Multiscale Experimental-Numerical Analysis on Reconsolidation of Salt-Clay Mixture for Disposal of Heat-Generating Waste - Columbia University SECTION B. Project Description Columbia University, in collaboration with Sandia National Laboratory, proposes to improve the understanding of the thermal- hydrological-mechanical-chemical (THMC) coupling effect on the reconsolidation of granular salt-clay mixture used for the seal systems of shafts and drifts in

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Integration of Microwave Readout into Nuclear Process Monitoring - University of Colorado, Boulder SECTION B. Project Description The University of Colorado, in collaboration with Los Alamos National Laboratory and Savannah River National Laboratory, proposes to demonstrate that high-resolution γ-ray spectroscopy, based on emerging microcalorimeter sensors, can determine elemental and isotopic fractions with accuracy comparable to much slower mass spectrometry and

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Calorimeter for Nuclear Energy Teaching and Research - Washington State University SECTION B. Project Description Washington State University proposes to purchase and setup a new calorimeter for use with radioactive material at the university. The project would improve the capability of the university's Department of Chemistry for nuclear-related teaching and research. SECTION C. Environmental Aspects / Potential Sources of Impact The action consists of purchasing

  14. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: Development of a Comprehensive Two-phase Flow Database for the Validation of NEK-2P - Virginia Tech SECTION B. Project Description Virginia Polytechnic Institute and State University, in collaboration with Ohio State University and Argonne National Laboratory, proposes to perform detailed uncertainty quantification to determine the applicable ranges and associated measurement uncertainties in simulated two-phase boiling flows. The best combination of these techniques

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Feasibility of Combined Ion-Neutron Irradiation for Accessing High Dose Levels - Florida International University SECTION B. Project Description Florida International University, in collaboration with the Idaho National Laboratory (INL), proposes to achieve the separation of Am from lanthanides by electrochemical oxidation of Am(III) to its higher oxidation states, Am(V) and AM(VI), through the design, and testing of new high surface area electrodes and porous sorbent

  16. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    40 SECTION A. Project Title: Quantifying Properties for a Mechanistic, Predictive Understanding of Aqeous Impact on Ageing of Medium and Low Voltage AC and DC Cabling in Nuclear Power Plants - University of Minnesota, Duluth SECTION B. Project Description The University of Minnesota, Duluth proposes to develop a mechanistic, predictive model for medium and low voltage cable failure based on the primary environmental degradation parameters of aqueous immersion time, temperature, and the oxidation

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Development of Reactor Thermal-Hydraulics and Safety Research Facilities at Kansas State University SECTION B. Project Description Kansas State University proposes to purchase advanced instrumentation for thermalhydraulics and reactor safety-related fundamental experiments. This instrumentation includes a high-speed multispectral infrared imaging system, a high-speed imaging system capable of recording up to 500,000 frames per second for flow visualization, a laser

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: A Computational-Experimental Study to Simulate Mixing and Thermal Stratification in SFRs - Kansas State University SECTION B. Project Description Kansas State University, in collaboration with the University of Illinois and Argonne National Laboratory, proposes to use thermographic imaging and Ultrasonic Doppler Velocimetry techniques to generate high fidelity thermal stratification and flow field data under various geometric and physical conditions for scaled modes

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Wireless Reactor Power Distribution Measurement System Utilizing an In-Core Radiation and Temperature Tolerant Wireless Transmitter and a Gamma-Harvesting Power Supply - Westinghouse Electric Company SECTION B. Project Description Westinghouse Electric Company, in collaboration with the Pennsylvania State, proposes to design, manufacture, and operate a vacuum micro-electronic- (VME) based wireless transmitter that continuously broadcasts vanadium self-powered neutron

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: CFD and System Code Benchmark Data for Plenum-to-Plenum Flow Under Natural Mixed and Forced Circulation Conditions SECTION B. Project Description The project will conduct computer modeling, as well as experimental initiatives. The experimental initiatives include modifications to the current Utah State University experimental wind tunnel to evaluate flows and buoyancy-driven phenomena present in Very High Temperature Reactors during Loss of flow accident conditions.

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Earth Abundant High Temperature Materials for Radiological Power Conversion System SECTION B. Project Description The project consists of performing research and development using earth abundant elements to increase efficiencies to 20-30% through solid state alloying and composites of high temperature materials, thereby improving thermoelectric generator system performance without the need to invest in a single-purpose supply chain. Earth abundant high temperature

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Effect of Gamma Irradiation on the Microstructure and Mechanical Properties of Nano-modified Concrete - Vanderbilt University SECTION B. Project Description Vanderbilt University, in collaboration with Oak Ridge National Laboratory, proposes to perform gamma irradiation of nano-modified concrete and appropriate control reference samples that are also relevant to current and historic concrete mixes. The research plan will consist of multiscale chemical and mechanical

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: CFA-16-10885: Turbulent MHD flow modeling in annular linear induction pumps with validation experiments SECTION B. Project Description The scope of work consists of modeling and constructing an experimental flow loop facility and diagnostic tools to benchmark to refine and validate the predictions of computational fluid mechanics analyses. This task also involves fabrication of a modular annular linear induction pump (ALIP) pump that, combined with the added

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Thermal Hydraulic & Structural Testing and Modeling of Compact diffusion-bonded heat exchanges for Supercritical CO2 Brayton Cycles SECTION B. Project Description The primary focus of this research proposal would be on validating and verifying the structural integrity of continuous channel -type PCHEs such as the Heatric zig/zag or Marbond (otherwise known as Shimtec) continuous micro-channel heat exchanger opposed to fin-type geometries. The proposed research

  5. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Enhancing Irradiation Tolerance of Steels Via Nanostructuring by Innovative Manufacturing Techniques - Idaho State University SECTION B. Project Description Idaho State University, in collaboration with Idaho National Laboratory, proposes to enhance the fundamental understanding of irradiation effects in ultrafine-grained or nanocrystalline steels produced by equal-channel angular pressing (ECAP) or high-pressure torsion (HPT), and to assess the potential application

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: A Science Based Approach for Selecting Dopants in FCCI-Resistant Metallic Fuel Systems SECTION B. Project Description The goal of this project is to identify minor alloying additions (dopants) for minimizing or eliminating the effect of fuel cladding chemical interactions (FCCI) in fast reactor metallic fuels. The proposed program combines the following research tasks: i) Selection of dopant elements based on using electronic structure calculated thermokinetic and

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Versatile D-T Neutron-Generation System for Fast-Neutron Research and Education - Pennsylvania State University SECTION B. Project Description Pennsylvania State University proposes to acquire an Adelphi dual-tube 14-MeV Deuterium-Tritium (D-T) neutron-generation system. One tube has a neutron output of 10 8 n/sec, and the other tube has a neutron output of 10 10 n/sec. the lower-neutron-output part of the system will provide a capability to accurately detect the

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Self-powered Wireless Through-wall Data Communication for Nuclear Environments SECTION B. Project Description The proposed action consists of developing and demonstrating an enabling technology for the data communications for nuclear reactors and fuel cycle facilities using radiation and thermal energy harvesters, through-wall ultrasound communication, and harsh environment electronics. Specifically, the consist of three actions: (1) Directly harvest electrical energy

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Understanding fundamental science governing the development and performance of nuclear waste glasses SECTION B. Project Description This proposal aims to combine the strengths of experimental and computational materials science to address four difficult technical challenges related to development and performance of glass based radioactive waste forms. The project consists of four tasks: 1. Understanding the fundamental science governing the nucleation and growth of

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Microstructure, Thermal, and Mechanical Properties Relationships in U and UZr Alloys SECTION B. Project Description The proposed research will use the state-of-the-art, 3D, synchrotron-based characterization techniques, novel techniques that couple thermal and mechanical properties, existing experimental facilities, and complementary multiscale modeling to evaluate microstructure-properties relationships (both thermal and mechanical) in U and UZr alloys that have been

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Cask Mis-Loads Evaluation Techniques SECTION B. Project Description The main objective of this project is to develop a probabilistically-informed methodology, which involves innovative non- destructive evaluation (NDE) techniques, to determine the extent of potential damage or degradation of internal components of used nuclear fuel canisters/casks during normal conditions of transport or Hypothetical accident conditions. The University of Houston will use NDE based on

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: Research and teaching equipment for nuclear materials characterization SECTION B. Project Description The proposal to upgrade the UC Berkeley teaching and research laboratory's to enhance the understanding of mechanical and physical properties of nuclear materials on all length scales. Purchasing state-of-the-art equipment dedicate to be used on active materials allows to investigate reactor and ion beam irradiated materials to enhance accelerated materials testing

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: High Temperature Tribological Performance of Ni Alloys Under Helium Environment for Very High Temperature Gas Cooled Reactors (VHTRs) [RC-2.3] Helium Tribology for HTGRs - Texas A&M University SECTION B. Project Description Texas A&M University proposes to systematically evaluate the tribological response of 800H and 617 alloys at relevant reactor operating temperatures (700 o -950 o C) and in the presence of helium coolant. To achieve this objective, the

  14. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Experimental and Computational Studies of NEAMS Pebble Bed Reactors - Texas A&M University SECTION B. Project Description Texas A&M University proposes to perform a coordinated experimental and computational effort to quantitatively map the full-field 3-D velocity and temperature fields in the interstitial spaces within a pebble bed. The project will measure in-situ velocity and temperature distributions within a pebble bed flow system using state-of-the-art

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Mobile Manipulation and Survey System for H-Canyon and Other Applications Across the DOE Complex - University of Texas SECTION B. Project Description The University of Texas, in collaboration with the University of Florida, Florida International University, AREVA, and Savannah River National Laboratory, proposes to develop a hybrid mobile platform capable of maneuvering using wheels, treads or articulated legs to perform inspections and collect data in the H-Canyon

  16. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Upgrade of the MIT Research Reactor's Post Irradiation Examination (PIE) Capabilities - Massachusetts Institute of Technology SECTION B. Project Description The Massachusetts Institute of Technology proposes to purchase and install sample sectioning and polishing equipment and optical and electon microscopes to improve the MIT Research Reactor post-irradiation examination facilities. This will provide for preparation and initial characterization of activated materials

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Understand the Phase Transformation of Thermally Aged and Neutron Irradiated Duplex Stainless Steels Used in LWRs - University of Florida SECTION B. Project Description The University of Florida, in collaboration with Argonne National Laboratory (ANL), proposes to use the capability of the high energy X-ray MRCAT facility at ANL, including X-ray diffraction (XRD), Extended X-ray Absorption Fine Structure Specroscopy (EXAFS) and in-situ tensile testing with wide angle

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: A Coupled Experimental and Simulation Approach to Investigate the Impact of Grain Growth, Amorphization, and Grain Subdivision in Accident Tolerant U3Si2 Light Water Reactor Fuel - Pennsylvania State University SECTION B. Project Description Pennsylvania State University, in collaboration with Rensselaer Polytechnic Institute, Idaho National Laboratory, proposes to investigate the potential impact of grain structure change, specifically grain growth, subdivision, and

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Mechanistic Understanding of Silver Sorbent Aging Processes in Off-Gas Treatment - Syracuse University SECTION B. Project Description Syracuse University proposes to develop an understanding of the different mechanisms of silver-aging processes on adsorbents exposed to off-gas streams to enable prediction of long-term operation of gas treatment systems. Experiments to be conducted on silver-exchanged mordenite (Ag0Z) and silver-functionalized silica aerogel

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Alloying Agents to Stabilize Lanthanides Against Fuel Cladding Chemical Interaction: Tellurium and Antimony Studies - Ohio State University SECTION B. Project Description Ohio State University proposes to develop new minor additives which can form high-temperature stabilizing compounds with lanthanide fission products during operation. The proposed additives are expected to have the capability of immobilizing lanthanide fission products and preventing their transport

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Tribal DOE Program/Agreement-In-Principle - Shoshone-Bannock Tribes SECTION B. Project Description The Tribal DOE Program will continue to operate under the Cooperative Agreement No. DE-NE000587, which was negotiated between the Fort Hall Business Council and the Department of Energy-Idaho Office on December 18, 2012 for a 5-year period under the Agreement-In-Principle (AIP). The Tribal DOE AIP Program mission for FY2016 involves oversight and monitoring of DOE

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: DOE Traineeship in Nuclear and Radiochemistry at Washington State University and Colorado School of Mines SECTION B. Project Description Washington State University and the Colorado School of Mines propose to train graduate students in radiochemistry through an innovative pathway, involving a mature academic radiochemistry program at Washington State University (WSU) and a similar emerging program at Colorado School of Mines (CSM), in partnership with three national

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: ISU AGN-201 Reactor Safety Channels Upgrade - Idaho State University SECTION B. Project Description This project is to replace the aging (and obsolete) detectors necessary for the operation of the AGN-201 research reactor at Idaho State University. The reactor is used by both faculty and students at ISU for the purposed of education, research and training. Currently, three antiquated BF3 filled radiation detectors serve the reactor safety channels. BF3 detectors are

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: In Situ Raman Spectroscopy for Determining Actinide Speciation and Concentration - University of Nevada, Reno SECTION B. Project Description The University of Nevada, Reno proposes to investigate the ability of in situ Raman spectroscopy to determine the composition of the electrolyte in the electrorefiner by characterizing the Raman spectrum of lanthanides in molten LiCl-KCl-UCl3. Furthermore, it will evaluate the use of the technique in real time while the U metal

  5. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: In Situ Raman Spectroscopy for Determining Actinide Speciation and Concentration - Rensselaer Polytechnic Institute SECTION B. Project Description Rensselaer Polytechnic Institute proposes an innovative program to develop oxidation/corrosion resistant uranium silicide U 3 Si 2 fuels by chemical doping/fillers to form a continuous borosilicate glass as a protective oxide layer with transformational fuel performance and accident tolerance. The chemical doping/fillers

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: Enhancement of EM Pump Performance Through Modeling and Testing - University of Wisconsin SECTION B. Project Description The University of Wisconsin proposes to develop empirical and computer generated data to accurately predict or minimize end effects in new electromagnetic (EM) pumps. For this project, experimental data will be obtained using novel local velocity, temperature, and three-dimensional magnetic field assessment instruments. The techniques involved for

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Sodium-Cooled Fast Reactor Key Modeling and Analysis for Commercial Deployment - University of Wisconsin SECTION B. Project Description The University of Wisconsin proposes to conduct a series of experiments with advanced temperature and fluid measurement instrumentation (optical fibers, ultrasonic Doppler imaging, magnetic flow sensors, and hot wires) to obtain high fidelity data on thermal striping and thermal stratification in liquid sodium. To achieve this, a

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: Microstructure Experiments-Enabled MARMOT Simulations of SiC/SiC-based Accident Tolerant Nuclear Fuel System - North Carolina State University SECTION B. Project Description North Carolina State University proposes to characterize steam attack, hydrothermal corrosion, and radiation swelling of SiC/SiC composites-based accident tolerant fuel (ATF) using a combination of experiments, microstructure evaluation and phase-field simulations using MARMO - a MOOSE-based code.

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Experimental and Modeling Investigation of Overcooling Transients that include Freezing, in Fluoride-Salt Cooled High-Temperature Reactors (FHRs) - University of Wisconsin SECTION B. Project Description The University of Wisconsin proposes to recommendations for design features of FHR reactor components that would take advantage of the phenomena characteristic to fluoride salts in order to be resilient to overcooling, and to recover gracefully from over-cooling

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 SECTION A. Project Title: Advanced Electrochemical Separations of Actinide/Fission Products via the Control of Nucleation and Growth of Electrodeposits - University of Idaho SECTION B. Project Description The University of Idaho proposes to find ways to preclude the formation of electrodeposits with dendritic morphology for use in the pyrochemical reprocessing of spent nuclear fuels. The objectives of the proposed research are to: 1. Study the morphology (nucleation and growth) of

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: Irradiation Performance Testing of Specimens Produced by Commercially Available Additive Manufacturing Techniques - Colorado School of Mines SECTION B. Project Description The Colorado School of Mines, in collaboration with the Idaho National Laboratory, proposes to collect first-ever irradiation performance data for stainless steel and Inconel specimens produced using a range of commercially available additive manufacturing techniques. The University will conduct

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    8 SECTION A. Project Title: Transient Reactor Experiments to Validate MBM Fuel Performance Simulations (TREAT) - Utah State University SECTION B. Project Description Utah State University, in collaboration with Texas A&M University, University of South Carolina, and Idaho National Laboratory, proposes to conduct benchmark experiments to provide critical validation data for reactivity initiated accident (RIA) scenarios in LWRs. The proposed research includes separate effect experiments at the

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    099 SECTION A. Project Title: Effects of High Dose on Laser Welded, Irradiated AIUSI 304SS - Boise State University SECTION B. Project Description Boise State University, in collaboration with Texas A&M University, Purdue University, the Westinghouse Materials Center of Excellence, and Idaho National Laboratory, proposes to assess the mechanical integrity of laser weld repairs of highly irradiated, He- containing AISI 304 stainless steel under extended LWR service conditions. After laser

  14. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Continued Development of LWR Fuel with Enhanced Accident Tolerance - AREVA Federal Services LLC SECTION B. Project Description AREVA Federal Services, in collaboration with EPRI, and Idaho National Laboratory, proposes to perform the necessary irradiation and testing, manufacturing integration, and analyses of the Cr-Cr2O3 concept to support the fabrication and insertion of Enhanced Accident Tolerant Fuel (EATF) Lead Fuel Rods/Lead Fuel Assemblies (LFR/LFAs) and

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Accident Tolerant Fuel Program Extension - Westinghouse Electric Company LLC SECTION B. Project Description Westinghouse Electric Company, in collaboration, Los Alamos National Laboratory, Oak Ridge National Laboratory, Idaho National Laboratory and several universities, companies, utilities and foreign entities, proposes to develop and deploy Lead Test Rods (LTRs) by 2019 and Lead Test Assemblies (LTAs) by 2022 of Westinghouse's Enhanced Accident Tolerant Fuel (ATF).

  16. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Continued Development of LWR Fuel with Enhanced Accident Tolerance - GE Global Research SECTION B. Project Description GE Global Research, in collaboration with Idaho National Laboratory, proposes to evaluate iron-chrome -aluminum (FeCrAl) alloys as cladding material for uranium dioxide (UO2) fuel in light water reactors. The major tasks to be performed as part of the program include: 1. FeCrAl tube fabrication and testing 2. Interactions with the Nuclear Regulatory

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    09-001 SECTION A. Project Title: ICP Routine Maintenance SECTION B. Project Description The purpose of this document is to address actions that meet the intent of the categorical exclusion (CX) B1.3 as described in 10 CFR 1021, Appendix B to Subpart D. Both typical and non-typical types of actions, such as routine maintenance, minor modifications, and custodial services required to support safe and efficient plant operations even if performed on an infrequent basis are addressed. All of the

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    02 SECTION A. Project Title: INL - Off-Road ATV Use In Support of Engineering Surveys SECTION B. Project Description The proposed action will allow for off-road ATV use near T-24 and T-25 at the Idaho National Laboratory Site. The ATV(s) will be used to survey in support of engineering design for a proposed upgraded haul road within the INL Site. Currently, an Environmental Assessment is being prepared to address upgrading either T-24 or T-25 to establish a site transportation route for the

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    3 SECTION A. Project Title: INL - Site Wide Well Abandonment Activities SECTION B. Project Description The proposed action will abandon inactive wells and injection wells at the Idaho National Laboratory (INL) Site. Wells and injection wells will be abandoned as per MCP-1442, MCP-3480 and the Idaho Department of Water Resources (IDWR) requirements, as applicable. The wells to be abandoned are located both within the INL facility boundaries and outside of the INL facility boundaries. The proposed

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 CX Posting No.: DOE-ID-ICP-12-002 SECTION A. Project Title: ICP Routine Maintenance SECTION B. Project Description The purpose of this document is to address actions that meet the intent of the categorical exclusion (CX) B1.3 as described in 10 CFR 1021, Appendix B to Subpart D. Both typical and non-typical types of actions, such as routine maintenance, minor modifications, and custodial services required to support safe and efficient plant operations even if performed on an infrequent basis

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2-003 SECTION A. Project Title: CPP-684 - Remote Analytical Laboratory Facility Modifications SECTION B. Project Description The proposed activities are intended to render CPP-684 Remote Analytical Laboratory (RAL) as a limited access area by removing existing operational functions that are currently performed in the facility. In general, the activities will involve (1) removing the need for building heat and overall reduction of power consumption; (2) converting the existing fire protection

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4-001 SECTION A. Project Title: INL - Idaho Completion Project Environmental and Regulatory Services Activities SECTION B. Project Description The proposed action addresses the site-wide sampling and monitoring and waste characterization sampling programs that support the Idaho Completion Project (ICP) operations. Actions include:  groundwater monitoring,  day-to-day monitoring activities (i.e., measurement of liquid or gaseous effluents for purposes of characterizing and quantifying

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: Spent Resin Removal and Addition of New Resin to Ion Exchange (IX) Columns Located at CPP- 666 SECTION B. Project Description The proposed action will transfer spent resins from hold tanks located inside CPP-666 to on-site vendor-owned and operated resin dewatering equipment (EnergySolutions), with off-site disposal of the dewatered resins at the Nevada National Security Site. This process is required to maintain water cleanliness and remove radionuclides and

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: Spent Resin Removal and Addition of New Resin to Ion Exchange (IX) Columns Located at CPP- 666 SECTION B. Project Description The proposed action will transfer spent resins from hold tanks located inside CPP-666 to on-site vendor-owned and operated resin dewatering equipment (EnergySolutions), with off-site disposal of the dewatered resins at the Nevada National Security Site. This process is required to maintain water cleanliness and remove radionuclides and

  5. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: INTEC - CPP-603 Large Cask Adaptability SECTION B. Project Description DOE is responsible for the safe storage of Spent Nuclear Fuel (SNF) in its possession as well as obtaining data to verify the condition of SNF currently being stored in large storage casks at the INL Site. To meet this responsibility, DOE needs to open and examine the low-burnup SNF currently in long-term dry storage to verify the condition of the fuel and look for any degradation. DOE examined

  6. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: INTEC - Macroencapsulation/Overpack Operations in CPP-659 and CPP-1617 SECTION B. Project Description The proposed action will treat mixed low-level waste (MLLW) at the Idaho Nuclear Technology and Engineering Center (INTEC). The treatment process, macroencapsulation, will result in the waste stream meeting the treatment standards for debris and radioactive lead solids (RLS) for disposition at the Nevada National Security Site (NNSS). The macroencapsulation process is

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6-007 SECTION A. Project Title: INTEC - INTEC - Transfer ATR Fuel From Wet (CPP-666) to Dry (CPP-603) Irradiated Fuel Storage Facility Fuel Conditioning Station SECTION B. Project Description The purpose of this project is to transfer approximately 1,000 ATR fuel elements from wet fuel storage located at the CPP-666 Fuel Storage Area (FSA) at the Idaho Nuclear Technology and Engineering Center (INTEC) to the dry fuel storage located within CPP-603B, Irradiated Fuels Storage Facility (IFSF). The

  8. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    EC Document No.: DOE-ID-INL-09-002 SECTION A. Project Title: Smoking Shelters SECTION B. Project Description. Install up to three prefabricated outdoor shelters for smokers. Design and install a shelter base so that shelters can be movable. The base shall be designed to prevent shelters from moving or tipping over due to high winds. Specific location for shelters is to be determined, but the shelter bases will be placed atop existing concrete or asphalt such that no subsurface soil disturbance

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    09-003 SECTION A. Project Title: Removal of Central Facilities Area (CFA)-661 Interior Walls and Mezzanine. SECTION B. Project Description The initial action to be covered under this Environmental Checklist will be removal of the mezzanines from CFA-661 to provide for material storage and work space for the National and Homeland Security (N&HS) Wireless Test Bed project. More specifically, this involves storage of electronic equipment, antennas and antenna masts, personnel supplies, and a

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 SECTION A. Project Title: CFA-696 Power and Plumbing Upgrades SECTION B. Project Description: There is insufficient electrical power in the East Bay and the West Bay of the Central Facility Area (CFA) Transportation Complex to allow the craftsmen to fully utilize the available floor space without the use of extension cords. Additionally, a new hydraulic hose clamper is to be installed in the Parts Room and it needs a dedicated 30A power supply. The craftsmen also need another wash sink in the

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 SECTION A. Project Title: MFC Dial Room Replacement Project SECTION B. Project Description: The proposed project is to construct and operate a new dial room at the Materials and Fuels Complex (MFC) to continue operation of the telecommunications system at the Idaho National Laboratory (INL). As part of the INL Private Branch Exchange (PBX) consolidation effort, the need to replace Central Facilities Area (CFA), Radioactive Waste Management Complex (RWMC), and Power Burst Facility (PBF) PBX

  12. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Characterization of Fluidized Beds via Pressure Fluctuation Analysis SECTION B. Project Description: The purpose of this work is to conduct research using pressure as a measure of performance for fluidized beds (spouted, bubbling, or slugging) at the Center for Advanced Energy Studies (CAES). The approach to this research activity consists of two main tasks: 1. Sieving the bed media with a motorized sieve shaker - sintered aluminosilicate spheres (used in the

  13. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Replace 200,000 Gallon Water Storage Tank at MFC SECTION B. Project Description: The project is to replace the current 200,000 gallon potable water tank at the Idaho National Laboratory (INL) Materials and Fuels Complex (MFC) with a new 300,000 gallon water tank. The existing tank and foundation will be removed and the waste materials managed and disposed under the direction of Waste Generator Services (WGS). The installation area for the new tank will be excavated

  14. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 SECTION A. Project Title: TRA-653 HVAC Modifications SECTION B. Project Description: The proposed project plans to replace the existing blowers, swamp coolers and electric heaters in the Idaho National Laboratory (INL) Test Reactor Area-653 (TRA-653) office area with three roof mounted heating, ventilating and air conditioning (HVAC) units; and install six roof mounted HVAC units at the TRA-653 machine shop area. These modifications are needed to enhance workplace habitability, maintain a more

  15. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 SECTION A. Project Title: TRA-609 Compressed Air System Drain Line Modification and Valve Replacement SECTION B. Project Description: Due to periods of insufficient water flow to the sewer ponds, the clay liners in the ponds can dry out and crack. This proposed action is to add an additional drain line, which will allow clean well water that has been used to cool compressors to then be drained into the sewer system ponds during low flow periods in order to maintain a higher, more consistent

  16. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CX Posting No.: DOE-ID-INL-10-008 SECTION A. Project Title: Maintenance and Modification of Well TRA-08 SECTION B. Project Description: TRA-08, a groundwater monitoring well located approximately 1.5 miles south of the ATR Complex was drilled and constructed in 1990. The well is currently used as a groundwater monitoring compliance point for the ATR Complex Cold Waste Pond Industrial Wastewater Reuse Permit (IWRP). It is also used for CERCLA groundwater monitoring by CWI. Over the life of the

  17. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    10-009 SECTION A. Project Title Idaho Falls (IF)-608 Uninterrupted Power Supply Upgrade Project SECTION B. Project Description: This project increases the Uninterrupted Power Supply (UPS) capacity in the IF-608 Information Operations and Research Center (IORC) by removing two existing UPS systems (50 KVA and 36 KVA) and installing a 225 KVA system. A ~15 ton cooling unit will be installed on the roof for heat removal. Associated work will include additional electrical panel(s) and electrical

  18. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 SECTION A. Project Title: Test Reactor Cask Implementation. SECTION B. Project Description: This proposed action is a process and facility modification. Background / Purpose & Need The Advanced Test Reactor (ATR) uses the Naval Reactors (NR) Casks to transport test trains between the Naval Reactors Facility (NRF) Expended Core Facility and the ATR. The Naval Reactor (NR) Casks, however, are approaching the end of their design life. In 1997, Bettis initiated a contract for construction of

  19. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    EC Document No.: DOE-ID-INL-10-011 DIRECTIONS: Responsible Managers, Project Environmental Lead, and Environmental Support personnel complete this form by following the instructions found at the beginning of each section and submit to Environmental Support & Services (environmental.checklist@inl.gov). SECTION A. Project Title: CFA and ATR-Complex Analytical and R&D Laboratory Operation (Overarching) SECTION B. Project Description: This EC replaces overarching EC INL-05-017 due to changes

  20. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 __________________________ 1 DOE's strategic plans included the Nuclear Energy Research and Development Roadmap" (2010 Predecisional draft) and reports such as "Facilities for the Future of Nuclear Energy Research: A Twenty-year Outlook". SECTION A. Project Title: Materials and Fuel Complex (MFC) Infrastructure Upgrades: Sewage Lagoons Upgrades SECTION B. Project Description: MFC Infrastructure Upgrades - MFC Sewage Lagoon Upgrades This EC focuses on upgrades to the existing 2.4

  1. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 SECTION A. Project Title: Materials and Fuels Complex (MFC) Infrastructure Upgrades - Technical Support Building SECTION B. Project Description: Materials and Fuels Complex (MFC) Infrastructure Upgrades - General The number of researchers and operators at the Materials and Fuels Complex has significantly increased, and is projected to increase further in the future to support the expanding research activities at the facility. These activities will require infrastructure upgrades (office space,

  2. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 SECTION A. Project Title: Materials and Fuel Complex (MFC) Infrastructure Upgrades: Modular Office Units SECTION B. Project Description: MFC Infrastructure Upgrades - General The number of researchers and operators at MFC has significantly increased, and is projected to increase further in the future to support the expanding research activities at the facility. These activities will require Infrastructure upgrades (office space, potable water, wastewater treatment, communications, etc.) to

  3. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    16 SECTION A. Project Title: GaRDS Vehicle X-Ray System Procurement, Installation and Operations SECTION B. Project Description: . This effort will be to procure, install, and operate a Gamma Radiation Detection System (GaRDS) capable of providing X-Ray images of incoming vehicles and delivery trucks. The scanner will be equipped with a 1 Ci Cobalt-60 gamma source and will be installed in building MFC-736. This security building is located on Taylor Blvd approximately one mile south of the

  4. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4-017 SECTION A. Project Title: Test Reactor Area (TRA)-653 Conference Room Modifications SECTION B. Project Description: The Advanced Test Reactor (ATR) Maintenance Shop, building Test Reactor Area (TRA)-653, located at the ATR Complex, has an upstairs conference room capable of being used as one large conference room or can be split into two conference rooms by a sliding curtain divider. The current configuration causes meeting interruptions due to the one available door limiting personnel

  5. DATE

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    1 of 2 CX Posting No.: DOE-ID-INL-14-018 SECTION A. Project Title: Materials and Fuel Complex (MFC)-782 Fire Sprinkler Installation SECTION B. Project Description: MFC-782 (Machine Shop) does not currently have a fire sprinkler system. In order to be in compliance with National Fire Protection Association (NFPA) requirements, an automated sprinkler system needs to be installed. The proposed project would consist of removing existing fire water line, drain line, potable water line, fire alarm

  6. DATE

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    Idaho National Laboratory Page 1 of 2 CX Posting No.: DOE-ID-INL-14-019 SECTION A. Project Title: Advanced Test Reactor (ATR) Electronic Message Board Installation SECTION B. Project Description: The scope of work for this project involves the installation of a new electronic information sign at the south end of the sidewalk by the guardhouse (Test Reactor Area [TRA]-658). The sign would be mounted on metal posts just south of the first sidewalk light pole. The new sign would be powered from the

  7. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Environmental Checklist Page 1 of 1 CX Posting No.: DOE-ID-INL-14-021 SECTION A. Project Description: Remote Closure Switch for Test Reactor Area (TRA)-786 Output Breaker SECTION B. Project Description: . The TRA-786 diesel generator output breaker has a high arc flash calculation that requires the operator to use heavy, cumbersome personal protective equipment (PPE) when closing the breaker. This breaker is located in the doorway of a trailer that is approximately 5 feet off the ground. There

  8. DATE

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    DOE-ID-ICP-16-001 R1 SECTION A. Project Title: INTEC - Macroencapsulation/Overpack Operations in CPP-659 and CPP-1617, Rev. 1 SECTION B. Project Description The proposed action will treat mixed low-level waste (MLLW) at the Idaho Nuclear Technology and Engineering Center (INTEC). The treatment process, macroencapsulation, will result in the waste stream meeting the treatment standards for debris and radioactive lead solids (RLS) for disposition at the Nevada National Security Site (NNSS). The

  9. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    9 SECTION A. Project Title: INTEC - Upgrade of the Emergency Communication System SECTION B. Project Description The proposed action will design, procure, and install an upgrade to the emergency communication system (ECS) for the Idaho Nuclear Technology and Engineering Center (INTEC). The existing system does not meet the new Life Safety codes and parts are no longer available for the antiquated system. Approximately 39 buildings will be included in the system modification and upgrade of ECS

  10. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6/23/2014 Rev. 20 Idaho National Laboratory Environmental Checklist Page 1 of 13 EC Document No.: INL-14-044 R1 DIRECTIONS: Responsible Managers, Principle Investigator/Researcher, Program Environmental Lead (PEL), and Environmental Support personnel complete this form by following the instructions found at the beginning of each section (A-G and the Approval' and Signature' blocks) and submit to Environmental Support & Services (see Environmental Points of Contact, NEPA/Environmental

  11. DATE

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    This is in accordance with the methods specified in the Rules for the Control of Air Pollution in Idaho (IDAPA 58.01.01.650-651). Since the drilling equipment qualifies as a ...

  12. Method and system for automated on-chip material and structural certification of MEMS devices

    DOEpatents

    Sinclair, Michael B.; DeBoer, Maarten P.; Smith, Norman F.; Jensen, Brian D.; Miller, Samuel L.

    2003-05-20

    A new approach toward MEMS quality control and materials characterization is provided by a combined test structure measurement and mechanical response modeling approach. Simple test structures are cofabricated with the MEMS devices being produced. These test structures are designed to isolate certain types of physical response, so that measurement of their behavior under applied stress can be easily interpreted as quality control and material properties information.

  13. Ultrananocrystalline diamond films with optimized dielectric properties for advanced RF MEMS capacitive switches

    DOEpatents

    Sumant, Anirudha V.; Auciello, Orlando H.; Mancini, Derrick C.

    2013-01-15

    An efficient deposition process is provided for fabricating reliable RF MEMS capacitive switches with multilayer ultrananocrystalline (UNCD) films for more rapid recovery, charging and discharging that is effective for more than a billion cycles of operation. Significantly, the deposition process is compatible for integration with CMOS electronics and thereby can provide monolithically integrated RF MEMS capacitive switches for use with CMOS electronic devices, such as for insertion into phase array antennas for radars and other RF communication systems.

  14. Integration of optoelectronics and MEMS by free-space micro-optics

    SciTech Connect

    WARREN,MIAL E.; SPAHN,OLGA B.; SWEATT,WILLIAM C.; SHUL,RANDY J.; WENDT,JOEL R.; VAWTER,GREGORY A.; KRYGOWSKI,TOM W.; REYES,DAVID NMN; RODGERS,M. STEVEN; SNIEGOWSKI,JEFFRY J.

    2000-06-01

    This report represents the completion of a three-year Laboratory-Directed Research and Development (LDRD) program to investigate combining microelectromechanical systems (MEMS) with optoelectronic components as a means of realizing compact optomechanical subsystems. Some examples of possible applications are laser beam scanning, switching and routing and active focusing, spectral filtering or shattering of optical sources. The two technologies use dissimilar materials with significant compatibility problems for a common process line. This project emphasized a hybrid approach to integrating optoelectronics and MEMS. Significant progress was made in developing processing capabilities for adding optical function to MEMS components, such as metal mirror coatings and through-vias in the substrate. These processes were used to demonstrate two integration examples, a MEMS discriminator driven by laser illuminated photovoltaic cells and a MEMS shutter or chopper. Another major difficulty with direct integration is providing the optical path for the MEMS components to interact with the light. The authors explored using folded optical paths in a transparent substrate to provide the interconnection route between the components of the system. The components can be surface-mounted by flip-chip bonding to the substrate. Micro-optics can be fabricated into the substrate to reflect and refocus the light so that it can propagate from one device to another and them be directed out of the substrate into free space. The MEMS components do not require the development of transparent optics and can be completely compatible with the current 5-level polysilicon process. They report progress on a MEMS-based laser scanner using these concepts.

  15. MEMS closed-loop control incorporating a memristor as feedback sensing element

    SciTech Connect

    Garcia, Ernest J.; Almeida, Sergio F.; Mireles, Jr., Jose; Zubia, David

    2015-12-01

    In this work the integration of a memristor with a MEMS parallel plate capacitor coupled by an amplification stage is simulated. It is shown that the MEMS upper plate position can be controlled up to 95% of the total gap. Due to its common operation principle, the change in the MEMS plate position can be interpreted by the change in the memristor resistance, or memristance. A memristance modulation of ~1 KΩ was observed. A polynomial expression representing the MEMS upper plate displacement as a function of the memristance is presented. Thereafter a simple design for a voltage closed-loop control is presented showing that the MEMS upper plate can be stabilized up to 95% of the total gap using the memristor as a feedback sensing element. As a result, the memristor can play important dual roles in overcoming the limited operation range of MEMS parallel plate capacitors and in simplifying read-out circuits of those devices by representing the motion of the upper plate in the form of resistance change instead of capacitance change.

  16. MEMS closed-loop control incorporating a memristor as feedback sensing element

    DOE PAGES [OSTI]

    Garcia, Ernest J.; Almeida, Sergio F.; Mireles, Jr., Jose; Zubia, David

    2015-12-01

    In this work the integration of a memristor with a MEMS parallel plate capacitor coupled by an amplification stage is simulated. It is shown that the MEMS upper plate position can be controlled up to 95% of the total gap. Due to its common operation principle, the change in the MEMS plate position can be interpreted by the change in the memristor resistance, or memristance. A memristance modulation of ~1 KΩ was observed. A polynomial expression representing the MEMS upper plate displacement as a function of the memristance is presented. Thereafter a simple design for a voltage closed-loop control ismore » presented showing that the MEMS upper plate can be stabilized up to 95% of the total gap using the memristor as a feedback sensing element. As a result, the memristor can play important dual roles in overcoming the limited operation range of MEMS parallel plate capacitors and in simplifying read-out circuits of those devices by representing the motion of the upper plate in the form of resistance change instead of capacitance change.« less

  17. Ultra-lightweight telescope with MEMS adaptive optic for distortion...

    Office of Scientific and Technical Information (OSTI)

    Sweatt, William C. ; Dagel, Daryl James ; Grine, Alejandro J. ; Mani, Seethambal S. ; Resnick, Paul James ; Gass, Fawn Renee ; Grossetete, Grant David Publication Date: 2004-12-01 ...

  18. Addressing mechanical reliability issues in Sandia MEMS devices...

    Office of Scientific and Technical Information (OSTI)

    No abstract prepared. Authors: Tanner, Danelle Mary, 1952- 1 ; -) ; Buchheit, Thomas E. ; Boyce, Brad Lee ; Goods, Steven Howard + Show Author Affiliations (, Publication Date: ...

  19. Calibration of an interfacial force microscope for MEMS metrology...

    Office of Scientific and Technical Information (OSTI)

    uncertainty in each method. Authors: Houston, Jack E. ; Baker, Michael Sean ; Crowson, Douglas A. ; Mitchell, John Anthony ; Moore, Nathan W. Publication Date: 2009-10-01 OSTI...

  20. Evidence for pre-sliding tangential deflections in MEMS friction...

    Office of Scientific and Technical Information (OSTI)

    Authors: Baker, Michael Sean ; Luck, David L. ; Ashurst, William Robert ; de Boer, Maarten Pieter Publication Date: 2003-03-01 OSTI Identifier: 923858 Report Number(s): ...

  1. Calibration of an interfacial force microscope for MEMS metrology...

    Office of Scientific and Technical Information (OSTI)

    Authors: Houston, Jack E. ; Baker, Michael Sean ; Crowson, Douglas A. ; Mitchell, John Anthony ; Moore, Nathan W. Publication Date: 2009-10-01 OSTI Identifier: 1001011 Report ...

  2. Next Release Date: August 2013

    Gasoline and Diesel Fuel Update

    in Renewable Energy Consumption and Electricity 2010 Release Date: December 11, 2012 Next Release Date: August 2013 Table 10. Renewable electric power sector net generation by energy source and State, 2009 (thousand kilowatthours) Landfill Gas/MSW Biogenic 1 Other Biomass 2 Alabama 12,535,373 - 2,050 245,980 - - - 248,030 12,783,403 Alaska 1,323,744 - - - - - 7,027 7,027 1,330,771 Arizona 6,427,345 18,299 - 136,641 - 14,145 29545 198,630 6,625,975 Arkansas 4,192,706 34,371 17,645 - - - - 52,016

  3. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: ltmartinez@lanl.gov Title: QA Support Description of Product or Service Required QA Support (Current subcontracts expires 2018) * Current forecasted bid opportunities are subject to change or cancellation due to scope, mission, or funding requirements. * Some procurements are reserved for small businesses. Note the competition type on the forecast matrix to determine if a procurement has been set aside or is open to fair and

  4. Posting Date: 28 May, 2015 Posting Close Date: TBD

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    5 Estimated Award Date: TBD Competition Type: TBD Buyer Contact Email: m_armijo@lanl.gov Title: Crowdsourcing Description of Product or Service Required Crowdsourcing * Current forecasted bid opportunities are subject to change or cancellation due to scope, mission, or funding requirements. * Some procurements are reserved for small businesses. Note the competition type on the forecast matrix to determine if a procurement has been set aside or is open to fair and reasonable competition. * LANL

  5. Property:StartDate | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    StartDate Jump to: navigation, search This is a property of type Date. Pages using the property "StartDate" Showing 25 pages using this property. (previous 25) (next 25) 4 4-County...

  6. Property:EndDate | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    EndDate Jump to: navigation, search This is a property of type Date. Pages using the property "EndDate" Showing 25 pages using this property. (previous 25) (next 25) 4 4-County...

  7. MEMS closed-loop control incorporating a memristor as feedback...

    Office of Scientific and Technical Information (OSTI)

    Sandia National Lab. (SNL-NM), Albuquerque, NM (United States) Univ. of Texas, El Paso, TX (United States) Univ. Autonoma de Ciudad Juarez (Mexico) Publication Date: 2015-12-01 ...

  8. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    of Mechanical and Chemical Structure Changes in a V2O5 Battery Electrode Using a MEMS Optical Sensor","Jung, H. University of Maryland; Gerasopoulos, K. University of...

  9. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Research and Development of Non-Spectroscopic MEMS-Based Sensor Arrays for Targeted Gas Detection","Loui, A; McCall, S K","2011-10-24T04:00:00Z",1035279,"10.2172...

  10. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Thin Silicon MEMS Contact-Stress Sensor","Kotovsky, J; Tooker, A; Horsley, D","2010-03-22T04:00:00Z",1009206,,"LLNL-PROC-427227","W-7405-ENG-48","TRN: US201106%%470","Conference",,...

  11. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    The Sandia MEMS Passive Shock Sensor : dormancy and aging.","Baker, Michael Sean; Tanner, Danelle Mary","2010-12-01T05:00:00Z",1008111,"10.21721008111","SAND2010-6943","AC04-94AL8...

  12. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Preliminary characterization of active MEMS valves.","Barnard, Casey Anderson","2010-08-01T04:00:00Z",1008114,"10.21721008114","SAND2010-6880","AC04-94AL85000","TRN:...

  13. Ultrasensitive measurement of MEMS cantilever displacement sensitivity below the shot noise limit

    SciTech Connect

    Pooser, Raphael C; Lawrie, Benjamin J

    2015-01-01

    The displacement of micro-electro-mechanical-systems (MEMs) cantilevers is used to measure a variety of phe- nomena in devices ranging from force microscopes for single spin detection[1] to biochemical sensors[2] to un- cooled thermal imaging systems[3]. The displacement readout is often performed optically with segmented de- tectors or interference measurements. Until recently, var- ious noise sources have limited the minimum detectable displacement in MEMs systems, but it is now possible to minimize all other sources[4] so that the noise level of the coherent light eld, called the shot noise limit (SNL), becomes the dominant source. Light sources dis- playing quantum-enhanced statistics below this limit are available[5, 6], with applications in gravitational wave astronomy[7] and bioimaging[8], but direct displacement measurements of MEMS cantilevers below the SNL have been impossible until now. Here, we demonstrate the rst direct measurement of a MEMs cantilever displace- ment with sub-SNL sensitivity, thus enabling ultratrace sensing, imaging, and microscopy applications. By com- bining multi-spatial-mode quantum light sources with a simple dierential measurement, we show that sub-SNL MEMs displacement sensitivity is highly accessible com- pared to previous eorts that measured the displacement of macroscopic mirrors with very distinct spatial struc- tures crafted with multiple optical parametric ampliers and locking loops[9]. We apply this technique to a com- mercially available microcantilever in order to detect dis- placements 60% below the SNL at frequencies where the microcantilever is shot-noise-limited. These results sup- port a new class of quantum MEMS sensor whose ulti- mate signal to noise ratio is determined by the correla- tions possible in quantum optics systems.

  14. Venezuela-MEM/USA-DOE Fossil Energy Report IV-11: Supporting technology for enhanced oil recovery - EOR thermal processes

    SciTech Connect

    Venezuela

    2000-04-06

    This report contains the results of efforts under the six tasks of the Tenth Amendment anti Extension of Annex IV, Enhanced Oil Recovery Thermal Processes of the Venezuela/USA Energy Agreement. This report is presented in sections (for each of the six Tasks) and each section contains one or more reports that were prepared to describe the results of the effort under each of the Tasks. A statement of each Task, taken from the Agreement Between Project Managers, is presented on the first page of each section. The Tasks are numbered 68 through 73. The first through tenth report on research performed under Annex IV Venezuela MEM/USA-DOE Fossil Energy Report Number IV-1, IV-2, IV-3, IV-4, IV-5, IV-6, IV-7, IV-8, IV-9, IV-10 contain the results of the first 67 Tasks. These reports are dated April 1983, August 1984, March 1986, July 1987, November 1988, December 1989, October 1991, February 1993, March 1995, and December 1997, respectively.

  15. Next Release Date: August 2013

    Gasoline and Diesel Fuel Update

    2012 Next Release Date: August 2013 Table 20. Total renewable net summer capacity by energy source and State, 2010 (megawatts) Landfill Gas/MSW 1 Other Biomass 2 Alabama 3,272 - - 583 - - - 583 3,855 Alaska 414 - - - - - 7 7 422 Arizona 2,720 4 - 29 - 20 128 181 2,901 Arkansas 1,341 9 6 312 - - - 326 1,667 California 10,141 292 97 639 2,004 475 2,812 6,319 16,460 Colorado 662 3 10 - - 41 1,294 1,348 2,010 Connecticut 122 159 - - - - - 159 281 Delaware - 8 - - - - 2 10 10 District of Columbia -

  16. MEMS Switches Are XS in Size, XXL in Power | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    MEMS Switches Are XS in Size, XXL in Power Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) MEMS Switches Are XS in Size, XXL in Power Chris Keimel 2012.09.28 Walk into a dark room and flip a light switch on. This simple action connected an electrical circuit and caused a light to illuminate the room. That switch is a

  17. Patterning of nanocrystalline diamond films for diamond microstructures useful in MEMS and other devices

    DOEpatents

    Gruen, Dieter M.; Busmann, Hans-Gerd; Meyer, Eva-Maria; Auciello, Orlando; Krauss, Alan R.; Krauss, Julie R.

    2004-11-02

    MEMS structure and a method of fabricating them from ultrananocrystalline diamond films having average grain sizes of less than about 10 nm and feature resolution of less than about one micron . The MEMS structures are made by contacting carbon dimer species with an oxide substrate forming a carbide layer on the surface onto which ultrananocrystalline diamond having average grain sizes of less than about 10 nm is deposited. Thereafter, microfabrication process are used to form a structure of predetermined shape having a feature resolution of less than about one micron.

  18. MEMS-based fuel cells with integrated catalytic fuel processor and method thereof

    DOEpatents

    Jankowski, Alan F.; Morse, Jeffrey D.; Upadhye, Ravindra S.; Havstad, Mark A.

    2011-08-09

    Described herein is a means to incorporate catalytic materials into the fuel flow field structures of MEMS-based fuel cells, which enable catalytic reforming of a hydrocarbon based fuel, such as methane, methanol, or butane. Methods of fabrication are also disclosed.

  19. A dynamic system matching technique for improving the accuracy of MEMS gyroscopes

    SciTech Connect

    Stubberud, Peter A.; Stubberud, Stephen C.; Stubberud, Allen R.

    2014-12-10

    A classical MEMS gyro transforms angular rates into electrical values through Euler's equations of angular rotation. Production models of a MEMS gyroscope will have manufacturing errors in the coefficients of the differential equations. The output signal of a production gyroscope will be corrupted by noise, with a major component of the noise due to the manufacturing errors. As is the case of the components in an analog electronic circuit, one way of controlling the variability of a subsystem is to impose extremely tight control on the manufacturing process so that the coefficient values are within some specified bounds. This can be expensive and may even be impossible as is the case in certain applications of micro-electromechanical (MEMS) sensors. In a recent paper [2], the authors introduced a method for combining the measurements from several nominally equal MEMS gyroscopes using a technique based on a concept from electronic circuit design called dynamic element matching [1]. Because the method in this paper deals with systems rather than elements, it is called a dynamic system matching technique (DSMT). The DSMT generates a single output by randomly switching the outputs of several, nominally identical, MEMS gyros in and out of the switch output. This has the effect of 'spreading the spectrum' of the noise caused by the coefficient errors generated in the manufacture of the individual gyros. A filter can then be used to eliminate that part of the spread spectrum that is outside the pass band of the gyro. A heuristic analysis in that paper argues that the DSMT can be used to control the effects of the random coefficient variations. In a follow-on paper [4], a simulation of a DSMT indicated that the heuristics were consistent. In this paper, analytic expressions of the DSMT noise are developed which confirm that the earlier conclusions are valid. These expressions include the various DSMT design parameters and, therefore, can be used as design tools for DSMT

  20. Property:NEPA ApplicationDate | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ApplicationDate Jump to: navigation, search Property Name NEPA ApplicationDate Property Type Date This is a property of type Date. Pages using the property "NEPA ApplicationDate"...

  1. Nuclear Speed-Dating | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Nuclear Speed-Dating Nuclear Speed-Dating March 10, 2015 - 10:48am Addthis Photo courtesy of Idaho National Laboratory. Photo courtesy of Idaho National Laboratory. Pat Adams Pat Adams Digital Content Specialist, Office of Public Affairs Nuclear Speed-Dating The future of nuclear energy needs smart, creative thinkers. That's why more than 120 experts met up last week to "speed-date" each other's ideas. Storified by Energy Department * Tue, Mar 10 2015 15:28:50 Nuclear Wetlands * James

  2. Categorical Exclusion (CX) Determinations By Date | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    CX(s) Applied: DOEEA-1914 National Renewable Energy Laboratory (NREL) Date: 072815 Location(s): CO Office(s): Golden Field Office July 21, 2015 CX-100313...

  3. Property:GEAReportDate | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    the project. Pages using the property "GEAReportDate" Showing 1 page using this property. L Los Humeros III Geothermal Power Plant + 19 December 2013 + Retrieved from "http:...

  4. Mechanical behavior simulation of MEMS-based cantilever beam using COMSOL multiphysics

    SciTech Connect

    Acheli, A. Serhane, R.

    2015-03-30

    This paper presents the studies of mechanical behavior of MEMS cantilever beam made of poly-silicon material, using the coupling of three application modes (plane strain, electrostatics and the moving mesh) of COMSOL Multi-physics software. The cantilevers playing a key role in Micro Electro-Mechanical Systems (MEMS) devices (switches, resonators, etc) working under potential shock. This is why they require actuation under predetermined conditions, such as electrostatic force or inertial force. In this paper, we present mechanical behavior of a cantilever actuated by an electrostatic force. In addition to the simplification of calculations, the weight of the cantilever was not taken into account. Different parameters like beam displacement, electrostatics force and stress over the beam have been calculated by finite element method after having defining the geometry, the material of the cantilever model (fixed at one of ends but is free to move otherwise) and his operational space.

  5. Solution-verified reliability analysis and design of bistable MEMS using error estimation and adaptivity.

    SciTech Connect

    Eldred, Michael Scott; Subia, Samuel Ramirez; Neckels, David; Hopkins, Matthew Morgan; Notz, Patrick K.; Adams, Brian M.; Carnes, Brian; Wittwer, Jonathan W.; Bichon, Barron J.; Copps, Kevin D.

    2006-10-01

    This report documents the results for an FY06 ASC Algorithms Level 2 milestone combining error estimation and adaptivity, uncertainty quantification, and probabilistic design capabilities applied to the analysis and design of bistable MEMS. Through the use of error estimation and adaptive mesh refinement, solution verification can be performed in an automated and parameter-adaptive manner. The resulting uncertainty analysis and probabilistic design studies are shown to be more accurate, efficient, reliable, and convenient.

  6. X-ray diffraction characterization of suspended structures forMEMS applications

    SciTech Connect

    Goudeau, P.; Tamura, N.; Lavelle, B.; Rigo, S.; Masri, T.; Bosseboeuf, A.; Sarnet, T.; Petit, J.-A.; Desmarres, J.-M.

    2005-09-15

    Mechanical stress control is becoming one of the major challenges for the future of micro and nanotechnologies. Micro scanning X-ray diffraction is one of the promising techniques that allows stress characterization in such complex structures at sub micron scales. Two types of MEMS structure have been studied: a bilayer cantilever composed of a gold film deposited on poly-silicon and a boron doped silicon bridge. X-ray diffraction results are discussed in view of numerical simulation experiments.

  7. MEMS 3-DoF gyroscope design, modeling and simulation through equivalent circuit lumped parameter model

    SciTech Connect

    Mian, Muhammad Umer Khir, M. H. Md.; Tang, T. B.; Dennis, John Ojur; Riaz, Kashif; Iqbal, Abid; Bazaz, Shafaat A.

    2015-07-22

    Pre-fabrication, behavioural and performance analysis with computer aided design (CAD) tools is a common and fabrication cost effective practice. In light of this we present a simulation methodology for a dual-mass oscillator based 3 Degree of Freedom (3-DoF) MEMS gyroscope. 3-DoF Gyroscope is modeled through lumped parameter models using equivalent circuit elements. These equivalent circuits consist of elementary components which are counterpart of their respective mechanical components, used to design and fabricate 3-DoF MEMS gyroscope. Complete designing of equivalent circuit model, mathematical modeling and simulation are being presented in this paper. Behaviors of the equivalent lumped models derived for the proposed device design are simulated in MEMSPRO T-SPICE software. Simulations are carried out with the design specifications following design rules of the MetalMUMPS fabrication process. Drive mass resonant frequencies simulated by this technique are 1.59 kHz and 2.05 kHz respectively, which are close to the resonant frequencies found by the analytical formulation of the gyroscope. The lumped equivalent circuit modeling technique proved to be a time efficient modeling technique for the analysis of complex MEMS devices like 3-DoF gyroscopes. The technique proves to be an alternative approach to the complex and time consuming couple field analysis Finite Element Analysis (FEA) previously used.

  8. MEMS Lubrication by In-Situ Tribochemical Reactions From the Vapor Phase.

    SciTech Connect

    Dugger, Michael T.; Asay, David B.; Kim, Seong H.

    2008-01-01

    Vapor Phase Lubrication (VPL) of silicon surfaces with pentanol has been demonstrated. Two potential show stoppers with respect to application of this approach to real MEMS devices have been investigated. Water vapor was found to reduce the effectiveness of VPL with alcohol for a given alcohol concentration, but the basic reaction mechanism observed in water-free environments is still active, and devices operated much longer in mixed alcohol and water vapor environments than with chemisorbed monolayer lubricants alone. Complex MEMS gear trains were successfully lubricated with alcohol vapors, resulting in a factor of 104 improvement in operating life without failure. Complex devices could be made to fail if operated at much higher frequencies than previously used, and there is some evidence that the observed failure is due to accumulation of reaction products at deeply buried interfaces. However, if hypothetical reaction mechanisms involving heated surfaces are valid, then the failures observed at high frequency may not be relevant to operation at normal frequencies. Therefore, this work demonstrates that VPL is a viable approach for complex MEMS devices in conventional packages. Further study of the VPL reaction mechanisms are recommended so that the vapor composition may be optimized for low friction and for different substrate materials with potential application to conventionally fabricated, metal alloy parts in weapons systems. Reaction kinetics should be studied to define effective lubrication regimes as a function of the partial pressure of the vapor phase constituent, interfacial shear rate, substrate composition, and temperature.

  9. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Research and Development of Non-Spectroscopic MEMS-Based Sensor Arrays for Targeted Gas Detection","Loui, A; McCall, S K; Zumstein, J M","2012-11-21T05:00:00Z",1059450,"10.2172...

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  14. Pretreated Slurries; Issue Date: August 2010; Revision Date: July 2011 (Version 07-08-2011)

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    Summative Mass Closure Laboratory Analytical Procedure (LAP) Review and Integration: Pretreated Slurries Issue Date: August 2010 Revision Date: July 2011 (Version 07-08-2011) J. Sluiter and A. Sluiter Technical Report NREL/TP-510-48825 Revised July 2011 Technical Report Summative Mass Closure NREL/TP-510-48825 Revised July 2011 Laboratory Analytical Procedure (LAP) Review and Integration: Pretreated Slurries Issue Date: August 2010 Revision Date: July 2011 (Version 07-08-2011) J. Sluiter and A.

  15. Property:NEPA RevisedApplicationDate | Open Energy Information

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  19. Home Energy Score: Analysis & Improvements to Date

    Energy.gov [DOE]

    Home Energy Score: Analysis & Improvements to Date, a presentation from the U.S. Department of Energy, by Joan Glickman Senior Advisor/Program Manager, Home Energy Score, July 24, 2012.

  20. Categorical Exclusion (CX) Determinations By Date | Department...

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    Air Conditioners RIN: 1904-AC82 CX(s) Applied: B5.1 EERE- Buildings Technology Program Date: 06172015 Location(s): Nationwide Office(s): Golden Field Office June 16, 2015...

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    Products Award Number: DE-EE0006875 CX(s) Applied: B3.6 Bioenergy Technologies Office Date: 05152015 Location(s): CA Office(s): Golden Field Office May 15, 2015 CX-100243...

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    O.&E b.&AORANDti l > : H. Jack Elackwell, Area Manager, LAAO DATE: June 5, 1973 70 : ?ZH-Division Leader ,WE,T : ENVIRONMENTAL RADIOACTIVITY SURVEY OF LOS ALAMOS COMIMUNITY ...

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    Audit of Fermi National Accelerator Laboratory's NOvA Project OAS-RA-L-10-02 April 2010 ... DATE: April 16, 2010 Audit Report Number: OAS-RA-L-10-02 REPLY TO ATTN OF: IG-32 ...

  9. Willard Libby, Radiocarbon, and Carbon Dating

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Willard Libby, Radiocarbon, and Carbon Dating Resources with Additional Information * Radiocarbon Dating Willard Libby Courtesy UCLA Photography 'Scientific discoveries of various magnitudes are constantly occurring in myriad fields of study. It is a rarity, however, to make a breakthrough that not only has an impact on an individual field but also revolutionizes scientific thought across multiple disciplines. Willard Frank Libby accomplished this feat. Libby first proposed his idea of carbon

  10. Can extractive reserves save the rain forest: A ecological and socioeconomic comparison of non-timber forest product extraction systems in Peten, Guatemala, and West Kalimantan, Indonesia

    SciTech Connect

    Salafsky, N.; Dugelby, B.L.; Terborgh, J.W.

    1992-04-01

    Extractive reserves in tropical rain forests, in which only non-timber products are harvested, have been heralded by some conservationists as a means of maintaining biodiversity while providing income for local people. The study of extraction systems in Peten, Guatemala, and in West Kalimantan, Indonesia, leads to a more tempered conclusion, for while the Peten program was quite successful, the Kalimantan program was not. The study finds the success of an extractive reserve to be contingent on: (1) ecological conditions, and (2) socioeconomic and political factors. Although the study focuses on market-oriented extractive reserves, many of the issues discussed apply as well to other land uses such as the collection of non-timber forest products for household consumption or small-scale timber extraction.

  11. Integrated optical MEMS using through-wafer vias and bump-bonding.

    SciTech Connect

    McCormick, Frederick Bossert; Frederick, Scott K.

    2008-01-01

    This LDRD began as a three year program to integrate through-wafer vias, micro-mirrors and control electronics with high-voltage capability to yield a 64 by 64 array of individually controllable micro-mirrors on 125 or 250 micron pitch with piston, tip and tilt movement. The effort was a mix of R&D and application. Care was taken to create SUMMiT{trademark} (Sandia's ultraplanar, multilevel MEMS technology) compatible via and mirror processes, and the ultimate goal was to mate this MEMS fabrication product to a complementary metal-oxide semiconductor (CMOS) electronics substrate. Significant progress was made on the via and mirror fabrication and design, the attach process development as well as the electronics high voltage (30 volt) and control designs. After approximately 22 months, the program was ready to proceed with fabrication and integration of the electronics, final mirror array, and through wafer vias to create a high resolution OMEMS array with individual mirror electronic control. At this point, however, mission alignment and budget constraints reduced the last year program funding and redirected the program to help support the through-silicon via work in the Hyper-Temporal Sensors (HTS) Grand Challenge (GC) LDRD. Several months of investigation and discussion with the HTS team resulted in a revised plan for the remaining 10 months of the program. We planned to build a capability in finer-pitched via fabrication on thinned substrates along with metallization schemes and bonding techniques for very large arrays of high density interconnects (up to 2000 x 2000 vias). Through this program, Sandia was able to build capability in several different conductive through wafer via processes using internal and external resources, MEMS mirror design and fabrication, various bonding techniques for arrayed substrates, and arrayed electronics control design with high voltage capability.

  12. Encapsulants for protecting MEMS devices during post-packaging release etch

    DOEpatents

    Peterson, Kenneth A.

    2005-10-18

    The present invention relates to methods to protect a MEMS or microsensor device through one or more release or activation steps in a "package first, release later" manufacturing scheme: This method of fabrication permits wirebonds, other interconnects, packaging materials, lines, bond pads, and other structures on the die to be protected from physical, chemical, or electrical damage during the release etch(es) or other packaging steps. Metallic structures (e.g., gold, aluminum, copper) on the device are also protected from galvanic attack because they are protected from contact with HF or HCL-bearing solutions.

  13. Thin Silicon MEMS Contact-Stress Sensor (Conference) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    work offers the first, thin, MEMS contact-stress (CS) sensor capable of accurate in situ measruement of time-varying, contact-stress between two solid interfaces (e.g. in vivo cartilage contact-stress and body armor dynamic loading). This CS sensor is a silicon-based device with a load sensitive diaphragm. The diaphragm is doped to create piezoresistors arranged in a full Wheatstone bridge. The sensor is similar in performance to established silicon pressure sensors, but it is reliably produced

  14. A Small Area In-Situ MEMS Test Structure to Accurately Measure Fracture Strength by Electrostatic Probing

    SciTech Connect

    Bitsie, Fernando; Jensen, Brian D.; de Boer, Maarten

    1999-07-15

    We have designed, fabricated, tested and modeled a first generation small area test structure for MEMS fracture studies by electrostatic rather than mechanical probing. Because of its small area, this device has potential applications as a lot monitor of strength or fatigue of the MEMS structural material. By matching deflection versus applied voltage data to a 3-D model of the test structure, we develop high confidence that the local stresses achieved in the gage section are greater than 1 GPa. Brittle failure of the polycrystalline silicon was observed.

  15. Posting Date: 11/09/2016 Posting Close Date: 11/17/2016

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    09/2016 Posting Close Date: 11/17/2016 North American Industry Classification System (NAICS) code for the request: 561720 Estimated Subcontract/PO Value: TBD Estimated Period of Performance Oct 2017 - Sep 2022 Estimated RFP/RFQ Release Date: Apr 3, 2017 Estimated Award Date: Jul 31, 2017 Competition Type: SB Set-Aside Buyer Contact Email: boule_earl_m@lanl.gov Title: Laboratory Custodial Service Description of Product or Service Required Custodial Service for Government owned buildings located

  16. Posting Date: 12/18/15 Posting Close Date: 1/4/16

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    815 Posting Close Date: 1416 North American Industry Classification System (NAICS) code for the request: 336211 Estimated SubcontractPO Value: TBD Estimated Period of...

  17. Posting Date: 12/17/15 Posting Close Date: 12/24/15

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    715 Posting Close Date: 122415 North American Industry Classification System (NAICS) code for the request: 236220 Estimated SubcontractPO Value: TBD Estimated Period of...

  18. Computational Age Dating of Special Nuclear Materials

    SciTech Connect

    2012-06-30

    This slide-show presented an overview of the Constrained Progressive Reversal (CPR) method for computing decays, age dating, and spoof detecting. The CPR method is: Capable of temporal profiling a SNM sample; Precise (compared with known decay code, such a ORIGEN); Easy (for computer implementation and analysis).  We have illustrated with real SNM data using CPR for age dating and spoof detection. If SNM is pure, may use CPR to derive its age. If SNM is mixed, CPR will indicate that it is mixed or spoofed.

  19. Method of forming a package for MEMS-based fuel cell

    SciTech Connect

    Morse, Jeffrey D; Jankowski, Alan F

    2013-05-21

    A MEMS-based fuel cell package and method thereof is disclosed. The fuel cell package comprises seven layers: (1) a sub-package fuel reservoir interface layer, (2) an anode manifold support layer, (3) a fuel/anode manifold and resistive heater layer, (4) a Thick Film Microporous Flow Host Structure layer containing a fuel cell, (5) an air manifold layer, (6) a cathode manifold support structure layer, and (7) a cap. Fuel cell packages with more than one fuel cell are formed by positioning stacks of these layers in series and/or parallel. The fuel cell package materials such as a molded plastic or a ceramic green tape material can be patterned, aligned and stacked to form three dimensional microfluidic channels that provide electrical feedthroughs from various layers which are bonded together and mechanically support a MEMS-based miniature fuel cell. The package incorporates resistive heating elements to control the temperature of the fuel cell stack. The package is fired to form a bond between the layers and one or more microporous flow host structures containing fuel cells are inserted within the Thick Film Microporous Flow Host Structure layer of the package.

  20. Design and fabrication of a MEMS chevron-type thermal actuator

    SciTech Connect

    Baracu, Angela; Voicu, Rodica; Müller, Raluca; Avram, Andrei; Pustan, Marius Chiorean, Radu Birleanu, Corina Dudescu, Cristian

    2015-02-17

    This paper presents the design and fabrication of a MEMS chevron-type thermal actuator. The device was designed for fabrication in the standard MEMS technology, where the topography of the upper layers depends on the patterns of structural and sacrificial layers underneath. The proposed actuator presents some advantages over usual thermal vertical chevron actuators by means of low operating voltages, high output force and linear movement without deformation of the shaft. The device simulations were done using COVENTOR software. The movement obtained by simulation was 12 μm, for a voltage of 0.2 V and the current intensity of 257 mA. The design optimizes the in-plane displacement by fixed anchors and beam inclination angle. Heating is provided by Joule dissipation. The material used for manufacture of chevron-based actuator was aluminum due to its thermal and mechanical properties. The release of the movable part was performed using isotropic dry etching by Reactive Ion Etching (RIE). A first inspection was achieved using Scanning Electron Microscope (SEM). In order to obtain the in-plane displacement we carried out electrical measurements. The thermal actuator can be used for a variety of optical and microassembling applications. This kind of thermal actuator could be integrated easily with other micro devices since its fabrication is compatible with the general semiconductor processes.

  1. A Robust MEMS Based Multi-Component Sensor for 3D Borehole Seismic Arrays

    SciTech Connect

    Paulsson Geophysical Services

    2008-03-31

    The objective of this project was to develop, prototype and test a robust multi-component sensor that combines both Fiber Optic and MEMS technology for use in a borehole seismic array. The use such FOMEMS based sensors allows a dramatic increase in the number of sensors that can be deployed simultaneously in a borehole seismic array. Therefore, denser sampling of the seismic wave field can be afforded, which in turn allows us to efficiently and adequately sample P-wave as well as S-wave for high-resolution imaging purposes. Design, packaging and integration of the multi-component sensors and deployment system will target maximum operating temperature of 350-400 F and a maximum pressure of 15000-25000 psi, thus allowing operation under conditions encountered in deep gas reservoirs. This project aimed at using existing pieces of deployment technology as well as MEMS and fiber-optic technology. A sensor design and analysis study has been carried out and a laboratory prototype of an interrogator for a robust borehole seismic array system has been assembled and validated.

  2. 2014 NEJC Save the Date (English) | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NEJC Save the Date (English) 2014 NEJC Save the Date (English) 2014 National Environmental Justice Conference and Training Program Save the Date, March 26 to 28, 2014 Save the Date (English) (3.38 MB) More Documents & Publications 2017 EJ Save the Date EIS-0333: Draft Environmental Impact Statement ITP Aluminum: Technical Working Group on Inert Anode Technologies

  3. Science and technology of piezoelectric/diamond heterostructures for monolithically integrated high performance MEMS/NEMS/CMOS devices.

    SciTech Connect

    Auciello, O.; Sumant, A. V.; Hiller, J.; Kabius, B.; Ma, Z.; Srinivasan, S.

    2008-12-01

    This paper describes the fundamental and applied science performed to integrate piezoelectric PbZr{sub x}Ti{sub 1-x}O{sub 3} and AlN films with a novel mechanically robust ultrananocrystalline diamond layer to enable a new generation of low voltage/high-performance piezoactuated hybrid piezoelectric/diamond MEMS/NEMS devices.

  4. REEE Solicitation Part I Due Date | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    I Due Date REEE Solicitation Part I Due Date March 16, 2016 12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART I DUE DATE...

  5. Adv. Fossil Solicitation Part I Due Date | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Fossil Solicitation Part I Due Date Adv. Fossil Solicitation Part I Due Date March 16, 2016 12:01PM to 11:59PM EDT ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I DUE DATE...

  6. Adv. Fossil Solicitation Part I Due Date | Department of Energy

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    Fossil Solicitation Part I Due Date Adv. Fossil Solicitation Part I Due Date January 13, 2016 12:01AM to 11:59PM EST ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  7. Adv. Nuclear Solicitation Part I Due Date | Department of Energy

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    Nuclear Solicitation Part I Due Date Adv. Nuclear Solicitation Part I Due Date March 16, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  8. Property:ASHRAE 169 Start Date | Open Energy Information

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    Start Date Jump to: navigation, search This is a property of type Date. Pages using the property "ASHRAE 169 Start Date" Showing 25 pages using this property. (previous 25) (next...

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  10. REEE Solicitation Part I Due Date | Department of Energy

    Office of Environmental Management (EM)

    I Due Date REEE Solicitation Part I Due Date November 30, 2016 1:01AM EST to December 1, 2016 12:59AM EST RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART I DUE DATE

  11. Adv. Nuclear Solicitation Part I Due Date | Department of Energy

    Energy Saver

    Nuclear Solicitation Part I Due Date Adv. Nuclear Solicitation Part I Due Date July 20, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  12. NEMA Lighting, CCE Overview and Update presentation, dated 05...

    Energy Saver

    Lighting, CCE Overview and Update presentation, dated 05252011. NEMA Lighting, CCE Overview and Update presentation, dated 05252011. This document is the U.S. Department of ...

  13. Memorandum from Daniel B. Poneman dated August 27, 2010, Strategic...

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    Daniel B. Poneman dated August 27, 2010, Strategic Business Initiatives Memorandum from Daniel B. Poneman dated August 27, 2010, Strategic Business Initiatives Dep Sec Memo ...

  14. POLICY GUIDANCE MEMORANDUM #04 Setting Effective Date for New...

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    04 Setting Effective Date for New Hires POLICY GUIDANCE MEMORANDUM 04 Setting Effective Date for New Hires The purpose of this memorandum is to establish the Department of...

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  17. FAQ's for: ENERGY STAR Verification Testing Pilot Program dated...

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    FAQ's for: ENERGY STAR Verification Testing Pilot Program dated December 2010 FAQ's for: ENERGY STAR Verification Testing Pilot Program dated December 2010 This document is the ...

  18. Jupiter Laser Facility Target Fab Request Requester: Date...

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    Sketches: Jupiter Laser Facility Target Fab Request Requester: Date Requested: Phone or E-Mail: Date Required: Target Name: Reference : Laser System: Project: Task:

  19. Posting Date: 11/16/2016 Posting Close Date: 11/23/2016

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    16/2016 Posting Close Date: 11/23/2016 North American Industry Classification System (NAICS) code for the request: 236210 Estimated Subcontract/PO Value: TBD Estimated Period of Performance Mar 2017 - Sep 2017 Estimated RFP/RFQ Release Date: Dec 2017 Estimated Award Date: Jan 2017 Competition Type: SB Set-Aside Buyer Contact Email: Havemann@lanl.gov Title: Blast Proof Building Site Work Project Description of Product or Service Required Design-Build of the site design for foundation and utility

  20. Supplier Information Form Date: New Revision

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Supplier Information Form Date: New Revision Interested suppliers may complete and submit a Supplier Information Form to be included into LANS' vendor database. Suppliers are advised that there is no guarantee any solicitations or awards will be sent to Supplier by submitting a Supplier Information Form; however, in the event a solicitation is sent to the Supplier from an LANS Procurement Official, then a more formal quotation/offer may be required. Legal Business Name: D/B/A: (if applicable)

  1. Research Highlights Sorted by Submission Date

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Submission Date November 2016 Exploiting Mie Scattering in KAZR Radial Velocities to Retrieve Air Motion and DSDs ARM ASR Williams, C. R. Potential of Higher-order Radar Moments and Slopes for Observing Arctic Ice Clouds ARM Maahn, M., Loehnert, U. Deep Convective Vertical Velocity Insights from ARM Profilers in the Amazon ARM ASR Giangrande, S. Impacts of the Manaus Pollution Plume on the Microphysical Properties of Amazonian Warm-Phase C ARM ASR Machado, L. A., Cecchini, M. A. October 2016 A

  2. Date DOE Media Contact: Yvonne Levardi

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Date DOE Media Contact: Yvonne Levardi Office of Communication and Information Management 509-376-8625 ORP_Office_of_Communication@rl.gov WTP Media contact: Todd Nelson (509) 371-2121 tanelson@Bechtel.com DOE Makes Significant Progress at Hanford Waste Treatment Plant in FY 2016 Construction of Low Activity Waste (LAW) Facility Scheduled for Completion in 2018 RICHLAND, Wash. - The U.S. Department of Energy Office of River Protection (ORP) and contractor Bechtel National Inc. (BNI) have

  3. WEATHERIZATION PROGRAM NOTICE 16-XX EFFECTIVE DATE:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    6-XX EFFECTIVE DATE: SUBJECT: WEATHERIZATION OF RENTAL UNITS - Applicable to single family and multifamily dwellings PURPOSE: To provide Grantees with updated guidance on weatherizing rental units in the Weatherization Assistance Program (WAP). DOE has answered specific questions from Grantees related to the weatherization of rental units, whether single family building or multifamily dwellings, over a number of years. However, the responses to these questions have not been put forth in

  4. Low energy cyclotron for radiocarbon dating

    SciTech Connect

    Welch, J.J.

    1984-12-01

    The measurement of naturally occurring radioisotopes whose half lives are less than a few hundred million years but more than a few years provides information about the temporal behavior of geologic and climatic processes, the temporal history of meteoritic bodies as well as the production mechanisms of these radioisotopes. A new extremely sensitive technique for measuring these radioisotopes at tandem Van de Graaff and cyclotron facilities has been very successful though the high cost and limited availability have been discouraging. We have built and tested a low energy cyclotron for radiocarbon dating similar in size to a conventional mass spectrometer. These tests clearly show that with the addition of a conventional ion source, the low energy cyclotron can perform the extremely high sensitivity /sup 14/C measurements that are now done at accelerator facilities. We found that no significant background is present when the cyclotron is tuned to accelerate /sup 14/C negative ions and the transmission efficiency is adequate to perform radiocarbon dating on milligram samples of carbon. The internal ion source used did not produce sufficient current to detect /sup 14/C directly at modern concentrations. We show how a conventional carbon negative ion source, located outside the cyclotron magnet, would produce sufficient beam and provide for quick sampling to make radiocarbon dating milligram samples with a modest laboratory instrument feasible.

  5. Design of DC-contact RF MEMS switch with temperature stability

    SciTech Connect

    Sun, Junfeng; Li, Zhiqun; Zhu, Jian; Yu, Yuanwei; Jiang, Lili

    2015-04-15

    In order to improve the temperature stability of DC-contact RF MEMS switch, a thermal buckle-beam structure is implemented. The stability of the switch pull-in voltage versus temperature is not only improved, but also the impact of stress and stress gradient on the drive voltage is suppressed. Test results show that the switch pull-in voltage is less sensitive to temperature between -20 °C and 100 °C. The variable rate of pull-in voltage to temperature is about -120 mV/°C. The RF performance of the switch is stable, and the isolation is almost independent of temperature. After being annealed at 280 °C for 12 hours, our switch samples, which are suitable for packaging, have less than 1.5% change in the rate of pull-in voltage.

  6. Fast Simulating High Order Models Application to Micro Electro-Mechanical Systems (MEMS)

    SciTech Connect

    Yacine, Z.; Benfdila, A.; Djennoune, S.

    2009-03-05

    The approximation of high order systems by low order models is one of the important problems in system theory. The use of a reduced order model makes it easier to implement analysis, simulations and control system designs. Numerous methods are available in the literature for order reduction of linear continuous systems in time domain as well as in frequency domain. But, this is not the case for non linear systems. The well known Trajectory Piece-Wise Linear approach (TPWL) elaborated to nonlinear model order reduction guarantees a simplification and an accurate representation of the behaviour of strongly non linear systems handling local and global approximation. The present attempt is towards evolving an improvement for the TPWL order reduction technique, which ensures a good quality of approximation combining the advantages of the Krylov subspaces method and the local linearization. We illustrate the technique on a MEMS circuit (Micro Electro-Mechanical System)

  7. Publication Dates | MIT-Harvard Center for Excitonics

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Publication Dates 9.25.2014 2016 2015 2014 2013 2012 2011 2010 2009

  8. TT Coordinator Ltr dated May 13 2010 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    TT Coordinator Ltr dated May 13 2010 TT Coordinator Ltr dated May 13 2010 TT Coordinator Ltr dated May 13 2010 TT_Coordinator_Ltr_dated_May_13_2010.pdf (13.89 KB) More Documents & Publications Technology Partnership Ombudsman - Roles, Responsibilities, Authorities and Accountabilities Technology Partnership Ombudsman - Roles, Responsibilities, Authorities and Accountabilities OHA 2014 ANNUAL REPORT

  9. Count Directive No. Title OPI Approval Date

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Due for Review Before 9/30/2016 Count Directive No. Title OPI Approval Date 1 DOE G 414.1-2B Quality Assurance Program Guide AU 8/16/2011 2 DOE G 414.1-4 Safety Software Guide for Use with 10 CFR 830, Subpart A, Quality Assurance Requirements, and DOE O 414.1C, Quality Assurance AU 6/17/2005 3 DOE G 421.1-2A Implementation Guide for Use in Developing Documented Safety Analyses to Meet Subpart B of 10 CFR 830 AU 12/19/2011 4 DOE G 424.1-1B Implementation Guide for Use in Addressing Unreviewed

  10. Date Time Event Description/Participants Location

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Updated: 06/11/2015 Date Time Event Description/Participants Location Point of Contact 11 thru 12 All Day Meeting Todd Allen, deputy director of Science and Technology at INL, has been invited to speak at the Idaho Society of Professional Engineers (ISPE) annual meeting. Coeur d'Alene, ID Sara Prentice, 526-9591 18 9:00 AM Education Outreach Approximately 50 iSTEM students and instructors will tour various INL Idaho Falls facilities Idaho Falls, ID INL Tours Office, 526-0050 23 All Day Meeting

  11. Compliant membranes for the development of MEMS dual-backplate capacitive microphone using the SUMMiT V fabrication process.

    SciTech Connect

    Martin, David (University of Florida, Gainesville, FL)

    2005-11-01

    The objective of this project is the investigation of compliant membranes for the development of a MicroElectrical Mechanical Systems (MEMS) microphone using the Sandia Ultraplanar, Multilevel MEMS Technology (SUMMiT V) fabrication process. The microphone is a dual-backplate capacitive microphone utilizing electrostatic force feedback. The microphone consists of a diaphragm and two porous backplates, one on either side of the diaphragm. This forms a capacitor between the diaphragm and each backplate. As the incident pressure deflects the diaphragm, the value of each capacitor will change, thus resulting in an electrical output. Feedback may be used in this device by applying a voltage between the diaphragm and the backplates to balance the incident pressure keeping the diaphragm stationary. The SUMMiT V fabrication process is unique in that it can meet the fabrication requirements of this project. All five layers of polysilicon are used in the fabrication of this device. The SUMMiT V process has been optimized to provide low-stress mechanical layers that are ideal for the construction of the microphone's diaphragm. The use of chemical mechanical polishing in the SUMMiT V process results in extremely flat structural layers and uniform spacing between the layers, both of which are critical to the successful fabrication of the MEMS microphone. The MEMS capacitive microphone was fabricated at Sandia National Laboratories and post-processed, packaged, and tested at the University of Florida. The microphone demonstrates a flat frequency response, a linear response up to the designed limit, and a sensitivity that is close to the designed value. Future work will focus on characterization of additional devices, extending the frequency response measurements, and investigating the use of other types of interface circuitry.

  12. Measured and predicted temperature profiles along MEMS bridges at pressures from 0.05 to 625 torr.

    SciTech Connect

    Gallis, Michail A.; Torczynski, John Robert; Piekos, Edward Stanley; Serrano, Justin Raymond; Gorby, Allen D.; Phinney, Leslie Mary

    2010-10-01

    We will present experimental and computational investigations of the thermal performance of microelectromechanical systems (MEMS) as a function of the surrounding gas pressure. Lowering the pressure in MEMS packages reduces gas damping, providing increased sensitivity for certain MEMS sensors; however, such packaging also dramatically affects their thermal performance since energy transfer to the environment is substantially reduced. High-spatial-resolution Raman thermometry was used to measure the temperature profiles on electrically heated, polycrystalline silicon bridges that are nominally 10 microns wide, 2.25 microns thick, 12 microns above the substrate, and either 200 or 400 microns long in nitrogen atmospheres with pressures ranging from 0.05 to 625 Torr. Finite element modeling of the thermal behavior of the MEMS bridges is performed and compared to the experimental results. Noncontinuum gas effects are incorporated into the continuum finite element model by imposing temperature discontinuities at gas-solid interfaces that are determined from noncontinuum simulations. The experimental and simulation results indicate that at pressures below 0.5 Torr the gas-phase heat transfer is negligible compared to heat conduction through the thermal actuator legs. As the pressure increases above 0.5 Torr, the gas-phase heat transfer becomes more significant. At ambient pressures, gas-phase heat transfer drastically impacts the thermal performance. The measured and simulated temperature profiles are in qualitative agreement in the present study. Quantitative agreement between experimental and simulated temperature profiles requires accurate knowledge of temperature-dependent thermophysical properties, the device geometry, and the thermal accommodation coefficient.

  13. Two- and three-dimensional ultrananocrystalline diamond (UNCD) structures for a high resolution diamond-based MEMS technology.

    SciTech Connect

    Auciello, O.; Krauss, A. R.; Gruen, D. M.; Busmann, H. G.; Meyer, E. M.; Tucek, J.; Sumant, A.; Jayatissa, A.; Moldovan, N.; Mancini, D. C.; Gardos, M. N.

    2000-01-17

    Silicon is currently the most commonly used material for the fabrication of microelectromechanical systems (MEMS). However, silicon-based MEMS will not be suitable for long-endurance devices involving components rotating at high speed, where friction and wear need to be minimized, components such as 2-D cantilevers that may be subjected to very large flexural displacements, where stiction is a problem, or components that will be exposed to corrosive environments. The mechanical, thermal, chemical, and tribological properties of diamond make it an ideal material for the fabrication of long-endurance MEMS components. Cost-effective fabrication of these components could in principle be achieved by coating Si with diamond films and using conventional lithographic patterning methods in conjunction with e. g. sacrificial Ti or SiO{sub 2} layers. However, diamond coatings grown by conventional chemical vapor deposition (CVD) methods exhibit a coarse-grained structure that prevents high-resolution patterning, or a fine-grained microstructure with a significant amount of intergranular non-diamond carbon. The authors demonstrate here the fabrication of 2-D and 3-D phase-pure ultrananocrystalline diamond (UNCD) MEMS components by coating Si with UNCD films, coupled with lithographic patterning methods involving sacrificial release layers. UNCD films are grown by microwave plasma CVD using C{sub 60}-Ar or CH{sub 4}-Ar gas mixtures, which result in films that have 3--5 nm grain size, are 10--20 times smoother than conventionally grown diamond films, are extremely resistant to corrosive environments, and are predicted to have a brittle fracture strength similar to that of single crystal diamond.

  14. COST BREAKDOWN AWARD NO: START DATE: EXPIRATION DATE: FISCAL YEAR BREAKDOWN OF FUNDS

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    COST BREAKDOWN AWARD NO: START DATE: EXPIRATION DATE: FISCAL YEAR BREAKDOWN OF FUNDS ELEMENTS FY FY FY FY FY TOTAL Direct Labor Overhead Materials Supplies Travel Other Direct Costs Subcontractors Total Direct Costs G&A Expense Total All Costs DOE Share* Awardee Share* Overhead Rate G&A Rate 1. The cost elements indicated are provided as an example only. Your firm should indicate the costs elements you have used on your invoices. 2. You should indicate the cost incurred for each of your

  15. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

    Energy Saver

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    Date 20041022 Extent International Countries Belize, Guatemala, Honduras, El Salvador, Nicaragua UN Region Central America Coordinates 13.846614265322,...

  17. File:Cammetst 58.pdf | Open Energy Information

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    Date 20031210 Extent Central America Countries Belize, Guatemala, Honduras, El Salvador, Nicaragua UN Region Central America Regions Central America Coordinates...

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  1. REEE Solicitation Part II Due Date | Department of Energy

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    II Due Date REEE Solicitation Part II Due Date November 30, 2016 1:01AM EST to December 1, 2016 12:59AM EST RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE ...

  3. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Adv. Nuclear Solicitation Part II Due Date Adv. Nuclear Solicitation Part II Due Date April 13, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART II ...

  4. POLICY GUIDANCE MEMORANDUM #04 Setting Effective Date for New Hires |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy 4 Setting Effective Date for New Hires POLICY GUIDANCE MEMORANDUM #04 Setting Effective Date for New Hires The purpose of this memorandum is to establish the Department of Energy's (DOE) policy for setting effective dates for newly hired employees and to ensure uniform application among DOE Headquarters, Elements and Field Human Resources Offices. POLICY GUIDANCE MEMORANDUM #4 Setting Effective Date for New Hires (74.23 KB) Responsible Contacts Tiffany Wheeler Human

  5. Appliance Standards Program Schedule - CCE Overview and Update, dated

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    October 26, 2011 | Department of Energy dated October 26, 2011 Appliance Standards Program Schedule - CCE Overview and Update, dated October 26, 2011 This document is Appliance Standards Program Schedule & CCE Overview and Update presentation, dated 10/26/2011, presented to Energy-Efficiency Advocacy Groups doe_eeag_present2011.pdf (446.59 KB) More Documents & Publications Appliance Standards Program Schedule - CCE Overview and Update, presented at AHRI 2011 Annual Meeting, dated

  6. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Key Dates Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Fellows Central Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page Key Dates for the 2017-2018 AEF Program Application process. On-line Application Opens August 17, 2016 Application Deadline 8:00pm EST November 17, 2016 Application Review 8 - 9 weeks Notification to Semi-Finalists [Travel

  7. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Key Dates DOE Office of Science Graduate Student Research (SCGSR) Program SCGSR Home Eligibility Benefits Participant Obligations How to Apply Information for Laboratory Scientists and Thesis Advisors Key Dates Frequently Asked Questions Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page The SCGSR Program Key Dates are noted below. At the submission deadline (shown in red), the online application system will close after which no additional materials will be accepted. The

  8. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Nuclear Solicitation Part II Due Date Adv. Nuclear Solicitation Part II Due Date November 23, 2016 12:01AM to 11:59PM EST ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Advanced Nuclear

  9. Method of forming a package for mems-based fuel cell

    DOEpatents

    Morse, Jeffrey D.; Jankowski, Alan F.

    2004-11-23

    A MEMS-based fuel cell package and method thereof is disclosed. The fuel cell package comprises seven layers: (1) a sub-package fuel reservoir interface layer, (2) an anode manifold support layer, (3) a fuel/anode manifold and resistive heater layer, (4) a Thick Film Microporous Flow Host Structure layer containing a fuel cell, (5) an air manifold layer, (6) a cathode manifold support structure layer, and (7) a cap. Fuel cell packages with more than one fuel cell are formed by positioning stacks of these layers in series and/or parallel. The fuel cell package materials such as a molded plastic or a ceramic green tape material can be patterned, aligned and stacked to form three dimensional microfluidic channels that provide electrical feedthroughs from various layers which are bonded together and mechanically support a MEMOS-based miniature fuel cell. The package incorporates resistive heating elements to control the temperature of the fuel cell stack. The package is fired to form a bond between the layers and one or more microporous flow host structures containing fuel cells are inserted within the Thick Film Microporous Flow Host Structure layer of the package.

  10. Development of a MEMS dual-axis differential capacitance floating element shear stress sensor

    SciTech Connect

    Barnard, Casey; Griffin, Benjamin

    2015-09-01

    A single-axis MEMS wall shear stress sensor with differential capacitive transduction method is produced. Using a synchronous modulation and demodulation interface circuit, the system is capable of making real time measurements of both mean and fluctuating wall shear stress. A sensitivity of 3.44 mV/Pa is achieved, with linearity in response demonstrated up to testing limit of 2 Pa. Minimum detectable signals of 340 μPa at 100 Hz and 120 μPa at 1 kHz are indicated, with a resonance of 3.5 kHz. Multiple full scale wind tunnel tests are performed, producing spectral measurements of turbulent boundary layers in wind speeds ranging up to 0.5 Ma (18 Pa of mean wall shear stress). The compact packaging allows for minimally invasive installation, and has proven relatively robust over multiple testing events. Temperature sensitivity, likely due to poor CTE matching of packaged materials, is an ongoing concern being addressed. These successes are being directly leveraged into a development plan for a dual-axis wall shear stress sensor, capable of producing true vector estimates at the wall.

  11. NTSF Spring 2012 Save The Date! | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NTSF Spring 2012 Save The Date! NTSF Spring 2012 Save The Date! Please mark your calendar for May 15 thru 17 to attend the 2012 U.S. Department of Energy (DOE) National Transportation Stakeholders Forum (NTSF). This year's Forum will be held at the Hilton Knoxville, which is located in the heart of the downtown business district in Knoxville, Tennessee. NTSF Spring 2012 Save The Date! (159.49 KB) More Documents & Publications NTSF Spring 2015 Save the Date NTSF Spring 2016 Save the Date NTSF

  12. Save the Date! Pennsylvania Strategic Energy Management Showcase 2015 |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Save the Date! Pennsylvania Strategic Energy Management Showcase 2015 Save the Date! Pennsylvania Strategic Energy Management Showcase 2015 December 19, 2014 - 12:31pm Addthis Save the Date! Pennsylvania Strategic Energy Management Showcase 2015 Attend the Pennsylvania Strategic Energy Management Showcase on April 7, 2015, at the Penn Stater Conference Center Hotel in State College, Pennsylvania, and learn about the Better Plants Program and Superior Energy Performance®

  13. FAQ's for: ENERGY STAR Verification Testing Pilot Program dated December

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    2010 | Department of Energy FAQ's for: ENERGY STAR Verification Testing Pilot Program dated December 2010 FAQ's for: ENERGY STAR Verification Testing Pilot Program dated December 2010 This document is the FAQ's for the ENERGY STAR Verification Testing Pilot Program dated December 2010 faq_final_december-2010.pdf (307.2 KB) More Documents & Publications Comment submitted by the Alliance for Water Efficiency (AWE) regarding the Energy Star Verification Testing Program DOE Verification

  14. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Key Dates Visiting Faculty Program (VFP) VFP Home Eligibility Benefits Participant Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page At the submission deadline (shown in red) the application system will close, and no materials will be accepted after the submission deadline has passed. The Application System closes at 5:00 PM Eastern Time. VFP Term: Summer 2017 On-line Application Opens October 17, 2016 Applications

  15. 2017 EJ Save the Date | Department of Energy

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    More Documents & Publications 2014 NEJC Save the Date (English) EIS-0333: Draft Environmental Impact Statement Conference Information: 2017 National Environmental Justice ...

  16. STATEMENT OF COMPLIANCE PAYROLL NUILBER PAYROLL PAYMENT DATE...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    COMPLIANCE PAYROLL NUILBER PAYROLL PAYMENT DATE CONTRACT NUMBER 382246 1 411712014 ... (Tile) (1) That I pay or supervise the payment of the persons employed by Intermach, ...

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    Date: 31-DEC-64","Maryland. Univ., College Park, MD (United States)","US Atomic Energy Commission (AEC)","PHYSICS; ANGULAR DISTRIBUTION; DEUTERON BEAMS; ELASTIC SCATTERING;...

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    National Nuclear Security Administration (NNSA)

    Date Set for Closure of Russian Nuclear Weapons Plant - NNSA Is Helping Make It Happen | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission ...

  19. Property:Incentive/StartDateString | Open Energy Information

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    Pages using the property "IncentiveStartDateString" Showing 25 pages using this property. (previous 25) (next 25) 3 30% Business Tax Credit for Solar (Vermont) +...

  20. Dating of major normal fault systems using thermochronology-...

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    Dating of major normal fault systems using thermochronology- An example from the Raft River detachment, Basin and Range, western United States Jump to: navigation, search OpenEI...