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Sample records for honorable dot harris

  1. The Honorable LaDoris G. Harris | Department of Energy

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

    The Honorable LaDoris G. Harris About Us The Honorable LaDoris G. Harris - Director, Office of Economic Impact and Diversity The Honorable LaDoris G. Harris The Honorable La Doris "Dot" Harris brings over 30 years of leadership and management experience as the Director of the Office of Economic Impact and Diversity at the U.S. Department of Energy (DOE). She ensures that minorities and historically underrepresented communities are afforded opportunities to actively participate in the

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

    Energy.gov [DOE]

    Harris was one of four recipients of the 2014 EmpowHer PathMaker Award, which recognize women who exemplify the characteristics of a PathMaker, one who blazes a path for others to follow and encourages and inspires along the way.

  3. Women @ Energy: Dot Harris | Department of Energy

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

    Dot Harris Women @ Energy: Dot Harris March 15, 2013 - 1:06pm Addthis LaDoris (Dot) Harris is the Director of the Office of Economic Impact and Diversity. LaDoris (Dot) Harris is the Director of the Office of Economic Impact and Diversity. LaDoris (Dot) Harris is the Director of the Office of Economic Impact and Diversity. She was nominated by President Obama and confirmed by the U.S. Senate on March 29, 2012. She has served at some of the world's largest firms including General Electric, ABB

  4. Director Dot Harris Inspires Girls at DigiGirlz Day Event

    Energy.gov [DOE]

    During the 3rd Annual DigiGirlz Day event held in Nashville, TN on Saturday, February, 28, 2015, Dot Harris, Director of DOE’s Office of Economic Impact and Diversity, delivered an invigorating and...

  5. A. Paul Alivisatos and Harry Atwater

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

    Paul Alivisatos and Harry Atwater University of California, Berkeley and Caltech Photovoltaic performance of ultra-small PbSe quantum dots Achievement: We developed a synthesis for ...

  6. Harry A. Atwater - JCAP

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

    Harris Walker About Us Harris Walker - Communications Specialist, Weatherization and Intergovernmental Program Most Recent Is Your Home as Ready for Summer as You Are? June 2 Connecticut Weatherization Project Improves Lives, Receives National Recognition May 6 New Year, New Certification Opportunities for Home Energy Workers January

    Harry A. Atwater Director and Lead Principal Investigator Email: haa@caltech.edu Dr. Harry Atwater is the Director of JCAP, and the Howard Hughes Professor and

  7. Arno Harris | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Arno Harris Jump to: navigation, search Name: Arno Harris Place: California Product: Founder and General Manager of EI Solutions (formerly Prevalent Power Inc.) References: Arno...

  8. Harry Baumes | Department of Energy

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

    Harry Baumes About Us Harry Baumes - Senior Executive Advisor to the Bioenergy Technologies Office and Director, Office of Energy Policy and New Uses, U.S. Department of ...

  9. Mr. Harry S. Cohen

    Office of Legacy Management (LM)

    a50b Mr. Harry S. Cohen 2956 Hathaway Road Apartment 1105 ' Richmond, Virginia 23225 Dear Mr. Cohen: ..:: The Department of Energy (DOE), as part of its Formerly Utilized Sites ...

  10. Harry Weerts | Argonne National Laboratory

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

    Harry Weerts, Associate Laboratory Director, Physical Sciences and Engineering Harry Weerts Associate Laboratory Director - Physical Sciences and Engineering Harry Weerts is the Associate Laboratory Director for Physical Sciences and Engineering. He oversees Argonne's interdisciplinary research programs in physics, chemistry, material science and nanotechnology. Weerts was formerly Director of Argonne's High Energy Physics division, and prior to that, a collider physicist at Fermilab, where he

  11. Awards & Honors - JCAP

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

    PAZ0093.JPG Awards & Honors Who We Are JCAP Mission JCAP At A Glance Fact Sheets Organizational Chart Recent Science Technology Transfer Awards & Honors Senior Management Scientific Leadership Researchers Governance & Advisory Boards Operations & Administration Who we are Overview JCAP Mission JCAP At A Glance Fact Sheets Organizational Chart Our Achievements Recent Science Technology Transfer Awards & Honors Our People Senior Management Scientific Leadership Researchers

  12. The Honorable Ed Austin

    Office of Legacy Management (LM)

    The Honorable Ed Austin 220 East Bay'Street Jacksonville, Florida 32202 Dear Mayor ... Restoration iiiphreys Gold Co ., Jacksonville, FL M. Jerrett, State of Florida i

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

    Office of Environmental Management (EM)

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

  14. DOE Honors Safety Star: Department's Program Honors Portsmouth...

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

    Site Contractor Employee for Promoting Safety Excellence DOE Honors Safety Star: Department's Program Honors Portsmouth Site Contractor Employee for Promoting Safety ...

  15. Harry S. Truman - Hanford Site

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

    Harry S. Truman Hanford For Students and Kids Hanford Fun Facts Classroom Projects Famous People of Hanford Albert Einstein Enrico Fermi Leslie Groves Franklin Matthias Gilbert ...

  16. North Carolina Nuclear Profile - Harris

    Energy Information Administration (EIA) (indexed site)

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

  17. User:Harris | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Harris Jump to: navigation, search Name harris Location Houston, Texas Edits 2 Friends User Edits DWC Bot 12006 Retrieved from "http:en.openei.orgwindex.php?titleUser:Harris&o...

  18. Harris Walker | Department of Energy

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

    Harris Walker About Us Harris Walker - Communications Specialist, Weatherization and Intergovernmental Program Most Recent Is Your Home as Ready for Summer as You Are? June 2 Connecticut Weatherization Project Improves Lives, Receives National Recognition May 6 New Year, New Certification Opportunities for Home Energy Workers January

  19. Scott Blake Harris | Department of Energy

    Energy.gov [DOE] (indexed site)

    Scott Blake Harris - Former General Counsel Scott Blake Harris served as the General Counsel for the Department of Energy. Most Recent Getting Smarter About the Smart Grid October...

  20. ESnet Awards and Honors

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

    News & Publications » ESnet Awards and Honors News & Publications ESnet News Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 or Media@es.net Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net ESnet Awards and Honors 2015 CENIC Innovations in

  1. Honors Attorney Program

    Energy.gov [DOE]

    The Department of Energy’s Honors Attorney Program is designed to recruit highly-qualified law school graduates (and recent law graduates completing judicial clerkships or fellowships) and offers...

  2. GEA Honors Geothermal Leaders

    Energy.gov [DOE]

    The Geothermal Energy Association (GEA) has announced the winners for the GEA Honors, which recognize companies and individuals that have made significant contributions during the past year to advancing technology, spurring economic development an

  3. Chioke B. Harris | Department of Energy

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

    Chioke B. Harris About Us Chioke B. Harris - AAAS Science and Technology Policy Fellow (ORISE) Chioke B. Harris Chioke Harris is an AAAS Science and Technology Policy Fellow placed at the U.S. Department of Energy's Building Technologies Office in their Emerging Technologies (ET) program. His current focus is on energy-water nexus issues in the built environment, in addition to supporting a wide array of ongoing ET programs. Dr. Harris was most recently a Postdoctoral Fellow at the University of

  4. Harry Frank | Photosynthetic Antenna Research Center

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

    Harry Frank Harry Frank Harry Frank Harry Frank Research Affiliate E-mail: harry.frank@uconn.edu Phone: 860.486.2844 Fax: 860.486.6558 Website: University of Connecticut Research Affiliate Dr. Frank's research focus is on carotenoids, a class of biological pigments. This research includes the roles carotenoids play in photosynthesis and how carotenoids carry out those roles. He employs various techniques, including X-ray and electron diffraction, nuclear magnetic resonance (NMR), absorption and

  5. Women @ Energy: Deborah Harris | Department of Energy

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

    Harris Women @ Energy: Deborah Harris March 11, 2013 - 5:33pm Addthis Women @ Energy: Deborah Harris Dr. Deborah Harris's current research interest is in the field of neutrino interactions and oscillations. Her work at Fermilab began with NuMI, the beamline that provides neutrinos to the MINERvA experiment, focusing on the beamline monitoring system. After working on both NOvA and MINOS oscillation experiments she realized that both of these experiments would need a better understanding of

  6. Harry Bolson | Photosynthetic Antenna Research Center

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

    Harry Bolson Harry Bolson placeholder image Harry Bolson Alumnus E-mail: hbbholson@wustl.edu Website: Washington University in St. Louis Mr. Bolson completed the Certificate in Renewable Energy & the Environment and graduated from Washington University in St. Louis in 2014. He is now a brand specialist with Amazon

  7. The Honorable Arne Duncan

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

    7, 2011 The Honorable Arne Duncan Secretary of Education Washington, DC 20206-5120 Dear Secretary: As the Latino population continues to grow in the United States, so does the need to educate this growing portion of the population. Executive Order 13555, Improving Educational Opportunities and Outcomes for Latino Students, states, "only 13 percent of Latinos hold a bachelor's degree, and just 4 percent have completed graduate or professional degree programs." These are statistics we

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

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

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

  9. Los Alamos honors Laboratory Fellows

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

    Los Alamos honors Laboratory Fellows Los Alamos honors Laboratory Fellows Charles Farrar, Steven Elliott and Mikhail Shashkov are being honored with appointment as Laboratory Fellows for 2012. November 19, 2012 Steven Elliott, Mikhail Shashkov and Charles Farrar Steven Elliott, Mikhail Shashkov and Charles Farrar Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email Chuck, Steven, and Mikhail have made exceptional contributions in their fields and to national security Engineering,

  10. Intelligence team given national honor

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

    Intelligence team given national honor Intelligence team given national honor A team known as the LANL Field Intelligence Element is being honored with the Department of Energy Exceptional Service Award. February 28, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos

  11. The Honorable Gary L. Willard

    Office of Legacy Management (LM)

    .J,f.i27 19% 1. I; The Honorable Gary L. Willard Scott Township. 2600 Old Greentree' Road Carnegie, -Pennsylvania 15106 , Dear Mayor Willardi .- ,. . ,:, Secretary of, Energy ...

  12. 2014 Secretarial Honor Awards | Department of Energy

    Energy Saver

    2014 Secretarial Honor Awards 2014 Secretarial Honor Awards Secretary Moniz will present the 2014 Secretarial Honor Awards at a ceremony on May 7, 2015 from 9:45 am to 10:45 am....

  13. 2007 News | Awards and Honors | NREL

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

    on January 8. January 10, 2007 NREL Senior Research Fellow Honored by The Journal of Physical Chemistry The American Chemical Society recently honored Arthur Nozik with a...

  14. 2014 Secretarial Honor Awards | Department of Energy

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

    2014 Secretarial Honor Awards 2014 Secretarial Honor Awards Secretary Moniz will present the 2014 Secretarial Honor Awards at a ceremony on May 7, 2015 from 9:45 am to 10:45 am. The Secretary's Honor Awards are designed to recognize excellence and achievements during the past year. Individuals and teams are selected by the Secretary to receive these awards.

  15. Harry E Mynick | Princeton Plasma Physics Lab

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

    environmental technology and policy assessment. Mynick received his bachelor's degree in physics and mathematics with highest honors from Yale University in 1972, winning in...

  16. The Honorable Rick.~Cole, ~

    Office of Legacy Management (LM)

    DE; 1 3 &g4 " ' The Honorable Rick.Cole, 100 N. Garfiild'Avenue Pasadena, California ... cc: ' Electric.Circuits, Inc., Pasadena,-CAB ' H. Collins, State of California

  17. The Honorable Stanley J. ,Esposito,

    Office of Legacy Management (LM)

    ' Department of Energy Washing& DC 20585 JAN 13 igg5 The Honorable Stanley J. ... I I' If you have' any questions, please feel free to call m e at 301-427-1721'or Dr..W . ...

  18. Terwilliger honored with ACA Award

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

    August » Terwilliger honored with ACA Award Terwilliger honored with ACA Award Tom Terwilliger is the recipient of the Trueblood Award from the American Crystallographic Association (ACA). August 6, 2013 Tom Terwilliger Tom Terwilliger The Trueblood award is established in memory of Professor Kenneth N. Trueblood of UCLA, who was a major force in the early use of computers and the development of crystallographic computer programs. Tom Terwilliger of LANL's Biosecurity and Public Health group is

  19. Savannah Harris | Savannah River Ecology Laboratory

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

    Savannah Harris SREL Graduate Program UGA Crop & Soil Savannah Harris Masters Student Seaman Lab Savannah Harris joined SREL as a research technician in John Seaman’s lab in January 2013 after completing her B.S. in biology in December 2012 at the University of South Carolina- Aiken. She also earned a cognate in geology and conducted her senior research project on the effects of geologic substrates and residuum soils on plant communities at Heggies Rock and Burks Mountain in Georgia, which

  20. 2014 Secretarial Honor Awards | Department of Energy

    Energy.gov [DOE] (indexed site)

    Secretary Moniz will present the 2014 Secretarial Honor Awards at a ceremony on May 7, 2015 from 9:45 am to 10:45 am. The Secretary's Honor Awards are designed to recognize...

  1. R&D 100 Honor Roll

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

    R&D 100 Honor Roll R&D 100 Honor Roll Discoveries, developments, advancements, and inventions pouring from Los Alamos make America-and the world-a better and safer place and ...

  2. National Building Museum 2010 Honor Award

    ScienceCinema

    Dr. Kristina M. Johnson

    2016-07-12

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

  3. Los Alamos honors Laboratory Fellows

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

    Laboratory Fellows November 19, 2012 Engineering, physics and computer science leaders announced LOS ALAMOS, N.M., November 19, 2012-Three distinguished members of the Los Alamos National Laboratory scientific staff are being honored with appointment as Laboratory Fellows for 2012. The committee ranked a collection of nominations on the basis of: 1) Sustained, high-level achievements in programs of importance to the Laboratory;2) A fundamental or important discovery that has led to widespread

  4. Gleason honored with Alvin Van Valkenburg Award

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

    Gleason honored with Alvin Van Valkenburg Award Gleason honored with Alvin Van Valkenburg Award Gleason was honored for her substantial contributions as an early career scientist to high-pressure physics in both static and dynamic compression. October 5, 2016 Arianna Gleason Arianna Gleason Communications Office (505) 667-7000 Gleason's research has focused on the strength of iron at planetary core conditions. Arianna Gleason of the Laboratory's Shock and Detonation Physics group recently

  5. Princeton Plasma Physics Laboratory Honors Three Researchers...

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

    Princeton Plasma Physics Laboratory Honors Three Researchers March 12, 2012 Tweet Widget ... received the Kaul Prize for Excellence in Plasma Physics Research and Technology ...

  6. 2015 News | Awards and Honors | NREL

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

    June 10, 2015 Geothermal Energy Association Honors Two NRELians with Top Recognition Dan Getman and Jordan Macknick were recognized by the Geothermal Energy Association (GEA) ...

  7. 2011 News | Awards and Honors | NREL

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

    Below are news stories related to Awards and Honors. RSS Learn about RSS. December 15, 2011 NREL Scientists Report First Solar Cell Producing More Electrons In Photocurrent Than ...

  8. Energy Department Assistant Secretary Danielson Honors Stevens...

    Energy Saver

    Stevens Institute of Technology won top honors overall by designing, building, and operating the most cost-effective, energy-efficient and attractive solar powered house. ...

  9. 2010 News | Awards and Honors | NREL

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

    Challenge (SERCh) Poster Competition, and three landed on top. November 29, 2010 IEEE Honors DeBlasio with Steinmetz Award Richard DeBlasio, chief engineer for renewable...

  10. H Canyon's 60th Anniversary Event Honors Past, Celebrates Future...

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

    H Canyon's 60th Anniversary Event Honors Past, Celebrates Future at Savannah River Site H Canyon's 60th Anniversary Event Honors Past, Celebrates Future at Savannah River Site...

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

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

    Lab Climate Software Honored for Pattern Recognition Advances Berkeley Lab Climate Software Honored for Pattern Recognition Advances September 17, 2015 Contact: Kathy Kincade, +1 ...

  12. Geothermal Energy Association Honors NREL's Dr. Bharathan for...

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

    Energy Association Honors NREL's Dr. Bharathan for Work in Condenser Technology Geothermal Energy Association Honors NREL's Dr. Bharathan for Work in Condenser Technology July 16,...

  13. Trillion Particle Simulation on Hopper Honored with Best Paper

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

    Trillion Particle Simulation on Hopper Honored with Best Paper Trillion Particle Simulation on Hopper Honored with Best Paper Berkeley Lab Researchers Bridge Gap to Exascale May...

  14. EM Receives Several Honors in 2011 DOE Sustainability Awards...

    Energy Saver

    Receives Several Honors in 2011 DOE Sustainability Awards EM Receives Several Honors in 2011 DOE Sustainability Awards November 4, 2011 - 12:00pm Addthis Several EM employees, ...

  15. High School Girls Honored for Math, Science Achievements

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

    School Girls Honored for Math, Science Achievements - Sandia Energy Energy Search Icon ... Twitter Google + Vimeo GovDelivery SlideShare High School Girls Honored for Math, Science ...

  16. Feynman Center for Innovation honors top technical trailblazers

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

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top technical trailblazers Gary Grider received the 2015 Richard P. Feynman Innovation Prize for ...

  17. Los Alamos honors computer code team with Feynman Innovation...

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

    Team honored with Feynman Innovation Prize Los Alamos honors computer code team with Feynman Innovation Prize This year's honorees for the Richard P. Feynman Innovation Prize at ...

  18. Feynman Center for Innovation honors top technical trailblazers

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

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top ... Gary Grider (second from right) with the 2015 Richard P. Feynman Innovation Prize. Also ...

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

    Office of Environmental Management (EM)

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

  20. Northern New Mexico College Foundation honors LANL's Richard

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

    Mexico College Foundation honors LANL's Richard Marquez with leadership, service award October 4, 2012 Northern New Mexico College Foundation honors LANL's Richard Marquez with...

  1. The Honorable Jeff Bingaman Chairman

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

    11, 2008 The Honorable Jeff Bingaman Chairman Committee on Energy and Natural Resources United States Senate Washington, DC 20510-6150 Dear Mr. Chairman: Thank you for your May 12,2008, letter concerning the current and projected impacts of biofuels on food and gasoline prices, among other issues. We emphatically agree with the suggestion in your press release of May 15 concerning this letter that "it's wise for folks to catch their breath and get better educated on the complexities before

  2. Leading experts to speak at battery & energy storage technology conference

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

    Leadership Leadership The Honorable LaDoris G. Harris Director, Office of Economic Impact and Diversity The Honorable La Doris "Dot" Harris brings over 30 years of management and leadership experience as the Director of the Office of Economic Impact and Diversity at the U.S. Department of Energy (DOE). She ensures that minorities and historically underrepresented communities are afforded opportunities to fully participate in the Department's programs. More about Dot Harris Andre H.

  3. Honors

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

    Homes Homes From the incandescent to CFLs to LEDs, we're exploring the <a href="/node/772396">long history of the light bulb</a> and how it led to new technology breakthroughs that are helping consumers save money on their energy bills. From the incandescent to CFLs to LEDs, we're exploring the long history of the light bulb and how it led to new technology breakthroughs that are helping consumers save money on their energy bills. Our homes are a major source of energy use

  4. Department of Energy Response to Correspondence from Mary Celeste Harris

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

    Related to District of Columbia Public Service Commission Docket No. EO-05-01 | Department of Energy Mary Celeste Harris Related to District of Columbia Public Service Commission Docket No. EO-05-01 Department of Energy Response to Correspondence from Mary Celeste Harris Related to District of Columbia Public Service Commission Docket No. EO-05-01 Docket No. EO-05-01: Department of Energy response to correspondence from Mary Celeste Harris related to District of Columbia Public Service

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

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

    COLLOQUIUM: Who Will Save the Tokamak - Harry Potter, Arnold Schwarzenegger, Shaquille O'Neal, or Donald Trump? Professor Jeffrey Freidberg Massachusetts Institute of Technology ...

  6. Harris County, Georgia: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Harris County, Georgia Hamilton, Georgia Pine Mountain, Georgia Shiloh, Georgia Waverly Hall, Georgia West Point, Georgia Retrieved from "http:en.openei.orgw...

  7. Medal of Honor recipients honored at Y-12 | Y-12 National Security...

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

    Medal of Honor recipients Herschel "Woody" Williams (USMC, WWII, Iwo Jima), Ron Rosser (US Army, Ponggilli, Korea) and Wesley Fox (USMC, Quang Tri, Vietnam) were welcomed by CNS ...

  8. The Honorable Robert Mort&s,

    Office of Legacy Management (LM)

    Wzishington, DC 20585 fJEC 01 1394 ," The Honorable Robert Mort&s, 7501 Meyer Road ' Spring Frove, Illinois '60081 Dear MayorMortens: , Secretary of Energy Hazel O'i@ari has ...

  9. 2008 News | Awards and Honors | NREL

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

    (NREL) took home high honors from Editors of R&D Magazine recently for two separate solar cell technologies that were named "the most revolutionary technologies of the year."...

  10. 2014 News | Awards and Honors | NREL

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

    HP Supercomputer at NREL Garners Top Honor Supercomputer that uses waste heat to warm its ... air-conditioning efficiency, data sharing, and its energy-efficient computer data center

  11. Small Business Administration Honors Oak Ridge Subcontractor

    Energy.gov [DOE]

    OAK RIDGE, Tenn. – The U.S. Small Business Administration (SBA) recently honored an environmental cleanup company that supports Oak Ridge’s EM program as its Subcontractor of the Year in an eight-state region.

  12. DOE's Office of Nuclear Energy Honored

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

    DOE's Office of Nuclear Energy Honored The U.S. Department of Energy's Office of Nuclear Energy was among those honored by the Partnership for Science and Technology (PST) as winners in the fourth annual PST Energy Advocate Awards. The awards are presented to individuals or organizations that were central to a noteworthy achievement in energy, nuclear energy or an environmental field that is of interest to PST members. The awards were presented at the annual PST Awards Luncheon on February 21,

  13. Seven Los Alamos scientists earn AAAS honors

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

    Seven Los Alamos scientists earn AAAS honors Seven Los Alamos scientists earn AAAS honors The Fellows are Richard Sayre, John Gordon, Jeanne Robinson, Jaqueline Kiplinger, Bryon Goldstein, Alexander Balatsky and Quanxi Jia. December 15, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new

  14. Los Alamos honors new research fellows

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

    Los Alamos honors new research fellows Los Alamos honors new research fellows Scott Crooker, Jennifer Hollingsworth, Dean Preston and Roger Wiens are being recognized as Fellows of the Laboratory. October 26, 2016 Dean Preston, Jennifer Hollingsworth, Roger Wiens and Scott Crooker Dean Preston, Jennifer Hollingsworth, Roger Wiens and Scott Crooker Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "Laboratory Fellows are selected for their exceptional contributions to

  15. honors and awards | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    honors and awards Y-12 recognized for outstanding procurement stewardship The Y-12 National Security Complex recently was recognized by NNSA for achieving the highest savings rate in the NNSA enterprise for fiscal year 2013. At the recent Supply Chain Management Center (SCMC) biannual operational meeting, NNSA presented Y-12 Procurement Operations with the award for... National group honors Sandia radiation effects expert Sandia radiation effects researcher Jim Schwank has won the 2014 IEEE

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

    Energy Saver

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

  17. Wirth Chair Honors NREL's Dan Arvizu - News Releases | NREL

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

    Dan Arvizu was honored at the 16th annual Wirth Chair Sustainability Awards Luncheon in Denver today. Dr. Dan E. Arvizu was honored at the 16th annual Wirth Chair Sustainability ...

  18. EM Sites Honored for Bird Protection Practices | Department of...

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

    Sites Honored for Bird Protection Practices EM Sites Honored for Bird Protection Practices March 31, 2014 - 12:00pm Addthis Two adult bald eagles sit atop a tree on the Hanford ...

  19. Medal of Honor recipient Colonel Bruce Crandall visits Y-12 ...

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

    Medal of Honor recipient Colonel Bruce Crandall visits Y-12 Posted: November 14, 2012 - 4:00pm Medal of Honor recipient Colonel Bruce Crandall visits Y-12 One of 80 living Medal of ...

  20. Smith and Lee earn LAS honors | The Ames Laboratory

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

    Smith and Lee earn LAS honors Ames Laboratory scientists Emily Smith and Young-Jin Lee have earned honors from Iowa State University's College of Liberal Arts and Sciences. Smith ...

  1. The Geothermal Technologies Office Congratulates this Year's GEA Honors Awardees

    Energy.gov [DOE]

    On December 10, the Geothermal Energy Association announced its 2013 GEA Honors awards for advances and achievements in geothermal energy. Among this year's eleven winners and honorable mentions are five projects that the Energy Department investe

  2. Professional Association Honors EM Employee with Technical Excellence Award

    Office of Energy Efficiency and Renewable Energy (EERE)

    An association with expertise in project cost and schedule management honored an EM employee with its Technical Excellence Award.

  3. Pantex honors veterans | National Nuclear Security Administration | (NNSA)

    National Nuclear Security Administration (NNSA)

    honors veterans Friday, May 23, 2014 - 12:11pm The Pantex Plant honored veterans at its recent annual ceremony to commemorate Armed Forces Day. Members of the Pantex Fire Department Honor Guard raised the American flag as attendees recited the Pledge of Allegiance and sang the national anthem. Pantex has been holding an Armed Forces Day ceremony for more than 15 years to honor those who served. Pantex has a long history of supporting military personnel and currently employs 782 military veterans

  4. Breakthrough Prize Honors Neutrino Research | Jefferson Lab

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

    Breakthrough Prize Honors Neutrino Research The Daya Bay and Ling Ao nuclear power reactors, pictured here behind Bob McKeown, are located roughly 55 kilometers from Hong Kong. The Daya Bay and Ling Ao nuclear power reactors, pictured here behind Bob McKeown, are located roughly 55 kilometers from Hong Kong. Breakthrough Prize Honors Neutrino Research He missed the 'glitzy Oscars for science,' but that's OK with Bob McKeown. McKeown is the Governor's Distinguished CEBAF Professor in William

  5. Comments by Mary Celeste Harris on the Emergency Operation of...

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

    EO-05-01: Comments by Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. "I am writing in response to your order of December 20, 2005, ...

  6. Harris Hill, New York: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hide Map This article is a stub. You can help OpenEI by expanding it. Harris Hill is a census-designated place in Erie County, New York.1 References US...

  7. Harris County- Green Building Policy for County Buildings

    Energy.gov [DOE]

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

  8. A Cornerstone of Our Energy Future: Women | Department of Energy

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

    A Cornerstone of Our Energy Future: Women A Cornerstone of Our Energy Future: Women March 19, 2014 - 1:47pm Addthis Secretary of Energy Ernest Moniz with The Honorable Dot Harris, Director of the Energy Department's Office of Economic Impact and Diversity (far left), and Sandra Guzman, award winning multimedia journalist, at the Minorities in Energy launch event. | Photo by the Energy Department. Secretary of Energy Ernest Moniz with The Honorable Dot Harris, Director of the Energy Department's

  9. NREL'S Zunger Receives Top Scientific Honors

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

    Top Scientific Honors For more information contact: Gary Schmitz, 303-275-4050 email: Gary Schmitz Golden, Colo., Nov. 29, 2000 - Alex Zunger, a physicist and research fellow at the U.S. Department of Energy's National Renewable Energy Laboratory, has been named the 2001 recipient of the prestigious Rahman Award by the American Physical Society (APS). The award from the APS is bestowed once annually to an individual for "outstanding achievement in computational physics research."

  10. NREL's Buildings Research Honored by Architecture Magazine

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

    NREL's Buildings Research Honored by Architecture Magazine For more information contact: Kerry Masson, (303) 275-4083 Golden, Colo., January 15, 1997—Architecture magazine's Progressive Architecture Award went to the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) and the Passive Solar Industries Council today for their joint efforts in designing energy-efficient buildings. The prestigious award is one of two given annually for outstanding contributions to architectural

  11. TO: Honorable Patricia Hoffman, Assistant Secretary for

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

    TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Richard Cowart, Chair DATE: September 24, 2014 RE: Recommendations Regarding Emerging and Alternative Regulatory Models and Modeling Tools to Assist in Analysis Introduction For closely linked reasons (e.g. proliferation of distributed generation, advances in technology, desire to integrate renewable generation, customer

  12. Secretary Moniz Hosts Energy Security Symposium, Honors Dr. Daniel Yergin

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

    with First James R. Schlesinger Medal for Energy Security | Department of Energy Hosts Energy Security Symposium, Honors Dr. Daniel Yergin with First James R. Schlesinger Medal for Energy Security Secretary Moniz Hosts Energy Security Symposium, Honors Dr. Daniel Yergin with First James R. Schlesinger Medal for Energy Security October 1, 2014 - 11:00am Addthis News Media Contact 202-586-4940 Secretary Moniz Hosts Energy Security Symposium, Honors Dr. Daniel Yergin with First James R.

  13. Energy Department Honored for Inroads in Geothermal Energy | Department of

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

    Energy Honored for Inroads in Geothermal Energy Energy Department Honored for Inroads in Geothermal Energy June 9, 2015 - 11:23am Addthis Energy Department Honored for Inroads in Geothermal Energy The Energy Department's geothermal office garnered five awards at the Geothermal Energy Association's (GEA) National Geothermal Summit on June 3, 2015, amidst a celebrated list of twelve sector trailblazers and industry standouts, including Ormat Technologies, Enel Green Power of North America, and

  14. DOE honors PECASE recipients | National Nuclear Security Administration |

    National Nuclear Security Administration (NNSA)

    (NNSA) honors PECASE recipients Wednesday, August 1, 2012 - 4:52pm Daniel B. Poneman, Deputy Secretary of Energy, today honored the five individuals from NNSA's national laboratories who have been named recipients of the Presidential Early Career Awards (PECASE) for Scientists and Engineers. Poneman presented each recipient with a plaque and praised each recipient for receiving the highest honor bestowed by the United States Government on science and engineering professionals in the early

  15. Los Alamos honors four for science leadership, research

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

    Los Alamos honors four for science leadership, research Los Alamos honors four for science leadership, research John Gordon, Geoffrey Reeves, Stephen Doorn and David Jablonski are honored for achievements. January 30, 2012 Left to right: David Jablonski, John Gordon, Stephen Doorn (seated), and Geoffrey Reeves Left to right: David Jablonski, John Gordon, Stephen Doorn (seated), and Geoffrey Reeves Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email Stars in hydrogen storage,

  16. Los Alamos physicist Hockaday honored for national security contributions

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

    Hockaday honored for national security contributions Los Alamos physicist Hockaday honored for national security contributions Hockaday earned a 2014 fellowship from the AAAS and also a Distinguished Alumni Award from the NMSU Alumni Association. December 9, 2014 Mary Hockaday Mary Hockaday Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "I have been truly surprised, humbled and honored by these awards; I greatly appreciate the folks who took to undertake my

  17. Los Alamos physicist honored by American Physical Society

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

    Physicist honored by American Physical Society Los Alamos physicist honored by American Physical Society George Kyrala is among a team honored with the American Physical Society's 2012 John Dawson Award for Excellence in Plasma Physics Research. August 29, 2012 George Kyrala George Kyrala Contact Communications Office (505) 667-7000 LOS ALAMOS, NEW MEXICO, August 29, 2012-Los Alamos National Laboratory physicist George Kyrala, along with researchers from Lawrence Livermore National Laboratory

  18. Los Alamos physicist honored with E.O. Lawrence Award

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

    Los Alamos physicist honored with E.O. Lawrence Award Los Alamos physicist honored with E.O. Lawrence Award John Sarrao is being honored by the U.S. Department of Energy with the 2013 Ernest O. Lawrence Award in Condensed Matter and Materials Sciences. April 16, 2014 John Sarrao John Sarrao Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "John Sarrao's exciting advances in actinide studies exemplify the quality of research performed at Los Alamos National

  19. NEJC Honors EJ Leaders and Pioneers | Department of Energy

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

    Honors EJ Leaders and Pioneers NEJC Honors EJ Leaders and Pioneers The National Environmental Justice Conference Honors EJ Leaders and Pioneers (114.51 KB) More Documents & Publications 2015 National Environmental Justice Conference and Training Program Concludes in Washington, DC Preparations Underway for the 2015 National Environmental Justice Conference & Training Program 2015 National Environmental Justice Conference and Training Program Call for PowerPoint/Video Presentations

  20. National Lab Employee Receives Honor for Energy Innovations | Department of

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

    Energy National Lab Employee Receives Honor for Energy Innovations National Lab Employee Receives Honor for Energy Innovations October 26, 2016 - 12:30pm Addthis SunShot Initiative awardee Dr. Dileep Singh of Argonne National Laboratory has been named a fellow of ASM International for his contributions to the science and technology behind concentrating solar power (CSP) and other energy innovations. This award is one of the highest honors in the field of materials science. Dr. Singh is the

  1. Department of Energy Honors Hanford Site Contractor for Employee...

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

    Site Contractor for Employee Involvement and Management Leadership in Safety and Health Department of Energy Honors Hanford Site Contractor for Employee Involvement and...

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

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

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

  3. Department of Energy Honors 50 ENERGY STAR® Partners that Saved...

    Energy.gov [DOE] (indexed site)

    the U.S. Environmental Protection Agency (EPA) honored 50 companies, organizations and ... Today, DOE, in partnership with EPA, offers businesses and consumers energy-efficient ...

  4. First Lady Michelle Obama and Secretary Chu Honor Employees for...

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

    Service Recognition Week May 5, 2011 - 11:01am Addthis April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs In honor of Public Service...

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

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

    a DOE Secretarial Honor Award for their development of OSCARS, the On-demand Secure Circuits and Reservation System. OSCARS is a software service that creates dedicated bandwidth...

  6. The Honorable Ernest Moniz Secretary, United States Department...

    Energy.gov [DOE] (indexed site)

    ME1 19100572v.1 October 22, 2014 The Honorable Ernest Moniz Secretary, United States ... Residential Gas Furnaces Dear Secretary Moniz: Thank you for the opportunity to brief ...

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

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

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

  8. ORISE: DOE Secretary Chu honors ORAU employees for Japan crisis...

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

    Sixteen ORAU employees received U.S. Department of Energy Secretarial Honor Awards for their work supporting the agency in responding to the Fukushima Daiichi nuclear reactor ...

  9. Northern New Mexico College Foundation honors LANL's Richard...

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

    LANL's Richard Marquez honored with leadership, service award Northern New Mexico College ... to the advancement of educational and economic opportunities for Northern New Mexico." ...

  10. Magoon v. Harris, 46 Vt. 264, 269 (1863) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Magoon v. Harris, 46 Vt. 264, 269 (1863) Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal CaseHearing: Magoon v. Harris, 46 Vt. 264, 269 (1863)Legal...

  11. Cristal Jones-Harris | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    Cristal Jones-Harris Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Fellows Central Current Fellows Alumni Fellows Official AEF Logos Contact WDTS Home Alumni Fellows Cristal Jones-Harris Print Text Size: A A A FeedbackShare Page Cristal Jones-Harris Fellowship Placement: National Aeronautics and Space Administration Hometown: Sandy Springs, GA Cristal Jones-Harris, Ed.

  12. The Honorable Deborah L. Wince-Smith Discusses Breaking the Glass...

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

    The Honorable Deborah L. Wince-Smith Discusses Breaking the Glass Ceiling in Manufacturing The Honorable Deborah L. Wince-Smith Discusses Breaking the Glass Ceiling in ...

  13. Grand Junction Office Founder Honored at the

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

    4 Grand Junction Office Founder Honored at the Philip C. Leahy Memorial Park Dedication and Open House The U.S. Department of Energy (DOE) Offce of Legacy Management (LM) held an open house and park dedication at the Grand Junction, Colorado, Offce to commemorate its place in the Manhattan Project and Cold War histories. The park, located in the middle of the Grand Junction Offce campus, was dedicated to Army Major (retired) Philip C. Leahy. Leahy came to Grand Junction in 1943 under secret

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

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

    Schwarzenegger, Shaquille O'Neal, or Donald Trump? | Princeton Plasma Physics Lab January 20, 2015, 1:30pm to 3:00pm Colloquia MBG Auditorium COLLOQUIUM: Who Will Save the Tokamak - Harry Potter, Arnold Schwarzenegger, Shaquille O'Neal, or Donald Trump? Professor Jeffrey Freidberg Massachusetts Institute of Technology Presentation: File Presentation This paper attempts to bridge the gap between tokamak reactor design and plasma physics. The analysis demonstrates that the overall design of a

  15. KCP's Carey honored as 2014 Black Achiever | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) KCP's Carey honored as 2014 Black Achiever Monday, February 10, 2014 - 11:00am KCP's Carey honored as 2014 Black Achiever Anthony Carey is not just focused on developing the next generation of Test Systems for our nation's military; he's also focused on developing the next generation of young leaders. A Technical Manager for the Kansas City Plant, Anthony was honored Jan. 16 at the annual Black Achievers Society of Kansas City event for his leadership both in the

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

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

    Secret City honor Secret City honor Posted: June 17, 2014 - 4:56pm B&W Y-12 President and General Manager Dave Richardson receives a framed proclamation and key to the city from Oak Ridge Mayor Tom Beehan. The city honored B&W Y-12 for 10 years of support for the Secret City Festival. Photo by Scott Fraker B&W Y-12 was recognized at this year's Secret City Festival opening ceremony for its 10 years of support for the festival. With contributions of more than $250,000, B&W Y-12

  17. Video: Honoring Science that Matters with the Enrico Fermi Award |

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

    Department of Energy Video: Honoring Science that Matters with the Enrico Fermi Award Video: Honoring Science that Matters with the Enrico Fermi Award February 11, 2014 - 9:50am Addthis The Fermi Award is a Presidential award and is one of the oldest and most prestigious science and technology honors bestowed by the U.S. Government. The 2013 winners of the award are Dr. Allen J. Bard, of The University of Texas at Austin, and Dr. Andrew Sessler of the Lawrence Berkeley National Laboratory.

  18. President Obama to Honor Nation's Leading Scientists and Innovators...

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

    President Obama to Honor Nation's Leading Scientists and Innovators January 22, 2016 - 10:59am Addthis Original content from Whitehouse.gov The White House announced the latest ...

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

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

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

  20. The Honorable Sandra Freedman 306 E. Jackson Street

    Office of Legacy Management (LM)

    N()J (-j 3 ;;54 The Honorable Sandra Freedman 306 E. Jackson Street Tampa, Florida 33602 ... E&gill Fertilizer, Inc., Riverview, FL M. Jerrett, State of Florida @ Prmled with soy Ink ...

  1. Request Photos from 2011 Secretarial Honor Awards Program

    Energy.gov [DOE]

    To facilitate the distribution of photographs from the 2011 Secretarial Honor Awards Program, held in the Forrestal Building, Washington, D.C. on October 27, 2011, posted here are 1) proof sheets...

  2. Y-12 honors past plant manager and building's namesake, Jack...

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

    past plant ... Y-12 honors past plant manager and building's namesake, Jack Case Posted: December 30, 2014 - 12:51pm Jack Case's granddaughter Michelle Hurst points out to her ...

  3. Small business and Lab honored for mentoring partnership

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

    Small business and Lab honored for mentoring partnership RG Construction Services wins DOE ... of the Year awards to LANS and RG Construction Services on May 24, 2016 DOE's Office ...

  4. Two PPPL physicists elected to receive prestigious honor | Princeton...

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

    Two PPPL physicists elected to receive prestigious honor By Jeanne Jackson DeVoe October 17, 2013 Tweet Widget Google Plus One Share on Facebook David Gates was one of two PPPL...

  5. Energy Secretary Honors EM Employee for Outstanding Safety Oversight

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Secretary Ernest Moniz, center, recently honored EM employee Robert (Dennis) Yates from the Savannah River Operations Office, right, as DOE’s Facility Representative of the Year for 2013.

  6. Final - WIPP Honored at Sustainable Business Summit 2013

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

    WIPP Honored for Sustainability CARLSBAD, N.M., September 18, 2013 - The U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) was recognized as one of two ...

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

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

    PPPL's science lecture debuts Jan. 10 with new name honoring long-time organizer By Jeanne ... The late Ron Hatcher hosted PPPL's Science on Saturday lectures. (Photo by Photo by ...

  8. Honoring Our Veterans Today and Year-Round

    Energy.gov [DOE]

    Whether through energy job training programs or advanced manufacturing initiatives, the Department of Energy is working to honor veterans of our nation's armed forces every day of the year.

  9. NREL Bioenergy Staff Honored for Top Innovations in 2015 | Bioenergy...

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

    Bioenergy Staff Honored for Top Innovations in 2015 May 24, 2016 Photo of a group of ten ... Transfer Excellence Awards to the bioenergy team of (from left to right) Wesley ...

  10. NREL Bioenergy Staff Honored for Top Innovations in 2015 | Awards...

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

    Bioenergy Staff Honored for Top Innovations in 2015 May 24, 2016 Photo of a group of ten ... Transfer Excellence Awards to the bioenergy team of (from left to right) Wesley ...

  11. NREL'S Morgan-Smith Honored by Martin Luther King Commission

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

    ...Smith Honored by Martin Luther King Commission For more information contact: Sarah Holmes Barba, 303-275-3023 email: Sarah Barba Golden, Colo., Jan. 9, 2001 - Syl Morgan-Smith, ...

  12. Small business and Lab honored for mentoring partnership

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

    Small business and Lab honored for mentoring partnership Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:November 2, 2016 all issues All Issues » submit Small business and Lab honored for mentoring partnership RG Construction Services wins DOE award. July 6, 2016 DOE's Office of Small and Disadvantaged Business Utilization presented Mentor and Protégé of the Year awards to LANS and RG Construction Services on May 24, 2016 DOE's

  13. NREL Analyst Honored with WREC Pioneer Award - News Releases | NREL

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

    Analyst Honored with WREC Pioneer Award September 6, 2006 Photo of Barbara Farhar Barbara Farhar Barbara Farhar, senior policy analyst with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), received a 2006 Pioneer Award at the World Renewable Energy Congress (WREC) on Aug. 23 in Florence, Italy. The Pioneer Awards honor individuals for their contribution to advancing renewable energy through research, teaching and promotion. Farhar was recognized for her

  14. NREL Expert Honored for Energy Systems Innovations - News Releases | NREL

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

    Expert Honored for Energy Systems Innovations Analyst named to editorial board; green data center and window air conditioning analysis also lauded January 6, 2014 Photo of Dr. Ben Kroposki Dr. Ben Kroposki, director of Energy Systems Integration at NREL. The Energy Department's National Renewable Energy Laboratory (NREL) recently won several prestigious awards, including honors for innovations in window air-conditioning efficiency, data sharing, and its energy-efficient computer data center. Ben

  15. NREL Researcher Honored with Hispanic STEM Award - News Releases | NREL

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

    NREL Researcher Honored with Hispanic STEM Award Santiago Grijalva will direct grid research portfolio for NREL's Energy System Integration Facility October 24, 2013 A national organization devoted to getting more Hispanics into the fields of science, technology, engineering, and math (STEM), has honored a scientist at the Energy Department's National Renewable Energy Laboratory (NREL) with its annual Outstanding Technical Achievement Award. Santiago Carlos Grijalva is NREL's new director of the

  16. NREL's Bharathan honored by Geothermal Energy Association - News Releases |

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

    NREL NREL's Bharathan honored by Geothermal Energy Association Engineer recognized for development of condenser technology July 2, 2012 Dr. Desikan Bharathan Dr. Desikan Bharathan Dr. Desikan Bharathan, a principal engineer with the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), has been recognized with a GEA Honors Award by the Geothermal Energy Association (GEA). The awards program gives special recognition to companies and individuals who have made notable

  17. NREL's Kurtz, Tegen Honored for Clean Energy Leadership | PV | NREL

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

    NREL's Kurtz, Tegen Honored for Clean Energy Leadership July 22, 2016 Photo shows Sarah Kurtz. Sarah Kurtz The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and achievement in the field of renewable energy. The C3E program, led by the Energy Department in collaboration with the Stanford Precourt Institute for Energy and the MIT Energy Initiative,

  18. NREL's Kurtz, Tegen Honored for Clean Energy Leadership | Solar | NREL

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

    NREL's Kurtz, Tegen Honored for Clean Energy Leadership July 22, 2016 Photo shows Sarah Kurtz. Sarah Kurtz The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and achievement in the field of renewable energy. The C3E program, led by the Energy Department in collaboration with the Stanford Precourt Institute for Energy and the MIT Energy Initiative,

  19. NREL's Kurtz, Tegen Honored for Clean Energy Leadership | Water | NREL

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

    NREL's Kurtz, Tegen Honored for Clean Energy Leadership July 22, 2016 Photo shows Sarah Kurtz. Sarah Kurtz The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and achievement in the field of renewable energy. The C3E program, led by the Energy Department in collaboration with the Stanford Precourt Institute for Energy and the MIT Energy Initiative,

  20. NREL's Kurtz, Tegen Honored for Clean Energy Leadership | Wind | NREL

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

    NREL's Kurtz, Tegen Honored for Clean Energy Leadership July 22, 2016 Photo shows Sarah Kurtz. Sarah Kurtz The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and achievement in the field of renewable energy. The C3E program, led by the Energy Department in collaboration with the Stanford Precourt Institute for Energy and the MIT Energy Initiative,

  1. NREL: News - Energy Department Honors Solar Decathlon Winners

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

    Department Honors Solar Decathlon Winners Saturday, October 5, 2002 Energy Department Honors Solar Decathlon Winners University of Colorado at Boulder Takes First in Solar Household Competition Washington, D.C. - The University of Colorado at Boulder took first place in the Department of Energy's (DOE) Solar Decathlon, officially bringing an end to the 10-day competition among university teams from around the country. David Garman, DOE's Assistant Secretary for Energy Efficiency and Renewable

  2. Feynman Center for Innovation honors top technical trailblazers

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

    Feynman Center honors top technical trailblazers Feynman Center for Innovation honors top technical trailblazers Breakthroughs tap Los Alamos science for commercial application, from high-performance computing to geothermal energy. July 19, 2016 Fuel Cell Performance and Durability Gary Grider (second from right) with the 2015 Richard P. Feynman Innovation Prize. Also pictured (left to right): Duncan McBranch, Chief Technology Officer of Los Alamos National Laboratory; Terry Wallace, Program

  3. Christie Administration Honors Princeton Plasma Physics Lab As New Jersey's

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

    Top Environmental Steward | Princeton Plasma Physics Lab Christie Administration Honors Princeton Plasma Physics Lab As New Jersey's Top Environmental Steward May 21, 2013 Tweet Widget Google Plus One Share on Facebook The Christie Administration has honored the U.S. Department of Energy's Princeton Plasma Physics Laboratory as the state's top environmental steward in a Department of Environmental Protection program that encourages companies and facilities to go above and beyond regulatory

  4. Energy Department Honors Savannah River Site Project Team with

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

    Secretary's Award | Department of Energy Honors Savannah River Site Project Team with Secretary's Award Energy Department Honors Savannah River Site Project Team with Secretary's Award April 14, 2016 - 1:30pm Addthis Pictured, left to right: Pam Marks, Federal Project Director, DOE-Savannah River Salt Waste Processing Facility Project Office (SWPFPO); Mary Ann Hopkins, President, Parsons Government Services, Inc.; Elizabeth Sherwood-Randall, DOE Deputy Secretary; Kim Rapp, Project Controls

  5. NNSA honors Pantex explosives experts | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) honors Pantex explosives experts Wednesday, March 12, 2014 - 1:00pm A group of explosives experts have been honored with a Defense Programs Award of Excellence for their help in securing supply of a critical material for the Departments of Energy and Defense. The four Pantexans, Tod Botcher, Tony Dutton, Ken Franklin and Kathy Mitchell, played a leadership role in a Defense Logistics Agency team that was tasked with developing a supply of a type of high explosives

  6. Los Alamos physicist Hockaday honored for national security contributions

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

    Los Alamos physicist Hockaday honored for national security contributions Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Los Alamos physicist Hockaday honored for national security contributions Hockaday earned a 2014 fellowship from the AAAS and also a Distinguished Alumni Award from the NMSU Alumni Association January 1, 2015 Mary Hockaday Mary Hockaday Contact Linda Anderman Email Associate Director for

  7. Berkeley Lab Climate Software Honored for Pattern Recognition Advances

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

    Lab Climate Software Honored for Pattern Recognition Advances Berkeley Lab Climate Software Honored for Pattern Recognition Advances September 17, 2015 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov The Toolkit for Extreme Climate Analysis (TECA), developed at Lawrence Berkeley National Laboratory to help climate researchers detect extreme weather events in large datasets, has been recognized for its achievements in solving large-scale pattern recognition problems. "TECA:

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

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

    Physicist honored with new APS award By Jeanne Jackson DeVoe December 10, 2014 Tweet Widget Google Plus One Share on Facebook Ilya Dodin Ilya Dodin It's fitting that Theory Department physicist Ilya Dodin was the first to receive the American Physical Society's Thomas H. Stix Award for Outstanding Early Career Contributions to Plasma Physics Research. Dodin, honored at the annual APS-Division of Plasma Physics meeting in New Orleans in October, was recognized for his research on waves in

  9. Los Alamos honored for industry collaboration in 2016 HPCwire Awards

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

    Los Alamos honored for industry collaboration in HPCwire Awards Los Alamos honored for industry collaboration in 2016 HPCwire Awards Los Alamos National Laboratory has been recognized for the Lab's collaboration with Seagate on next-generation data storage technologies. November 16, 2016 Since 1978 Los Alamos has won 137 of the prestigious R&D 100 Awards. Gary Grider, left, division leader for High Performance Computing at Los Alamos National Laboratory, accepts the HPCwire Readers' Choice

  10. Nuclear scientist honored by ACS for innovative studies

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

    Nuclear scientist honored by ACS for innovative studies Nuclear scientist honored by ACS for innovative studies David L. Clark has been selected as the 2017 recipient of the Glenn T. Seaborg Award for Nuclear Chemistry. August 22, 2016 David L. Clark David L. Clark, recipient of the 2017 Glenn T. Seaborg Award for Nuclear Chemistry from the American Chemistry Society. Photo credit: Rod Searcey, Stanford, Calif. Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "None of

  11. Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement

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

    Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement August 12, 2013 Peter Nugent (left) accepting award from Eddy Rubin. (right). Peter Nugent and Elizabeth Bautista of the National Energy Research Scientific Computing Center (NERSC) have been recognized with Lawrence Berkeley National Laboratory (Berkeley Lab) Director's Awards of Exceptional Achievement. The awards were presented Aug. 8 in a ceremony in

  12. National Day of Remembrance HSS Honors Former Nuclear Weapons Program

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

    Workers | Department of Energy Remembrance HSS Honors Former Nuclear Weapons Program Workers National Day of Remembrance HSS Honors Former Nuclear Weapons Program Workers October 28, 2013 - 3:11pm Addthis Color Guard | National Day of Remembrance - October 25, 2013 Color Guard | National Day of Remembrance - October 25, 2013 US Representative Dina Titus (1st Congressional District of Nevada) | National Day of Remembrance - October 25, 2013 US Representative Dina Titus (1st Congressional

  13. Obama Administration Honors Department of Energy Scientists and Engineers

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

    with Presidential Early Career Awards | Department of Energy Honors Department of Energy Scientists and Engineers with Presidential Early Career Awards Obama Administration Honors Department of Energy Scientists and Engineers with Presidential Early Career Awards November 8, 2010 - 12:00am Addthis WASHINGTON, D.C. - The Obama Administration has named 13 U.S. Department of Energy researchers as recipients of the Presidential Early Career Award for Scientists and Engineers (PECASE). This is

  14. Council Honors Oak Ridge's EM Program with Prestigious Historic

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

    Preservation Award | Department of Energy Council Honors Oak Ridge's EM Program with Prestigious Historic Preservation Award Council Honors Oak Ridge's EM Program with Prestigious Historic Preservation Award August 15, 2016 - 12:35pm Addthis Left to right, ACHP Chairman Milford Wayne Donaldson; Knox Heritage Executive Director Kim Trent; OREM Manager Sue Cange; and ACHP Expert Member Robert Stanton with the Chairman’s Award for Achievement in Historic Preservation. Left to right, ACHP

  15. NERSC Honors Third Annual HPC Achievement Award Winners

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

    Honors Third Annual HPC Achievement Award Winners NERSC Honors Third Annual HPC Achievement Award Winners February 24, 2015 2015 NERSC award winners Third annual NERSC HPC Achievement Award winners: (left to right) Taylor Barnes, Caltech; Carlo Benedetti, Berkeley Lab BELLA program; and Ken Chen, UC Santa Cruz. Not pictured: Craig Tull, SPOT Suite project. The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of its third annual High

  16. NERSC Staff Honored with Director's Awards for Exceptional Achievement

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

    Staff Honored with Director's Awards for Exceptional Achievement NERSC Staff Honored with Director's Awards for Exceptional Achievement September 14, 2015 Jon Bashor, jbashor@lbl.gov, 510-486-5849 Directors-Awards.jpg The award recipeients: (Top row, clockwise) Deborah Agarwal (CRD), Eli Dart (ESnet), Brent Draney (NERSC), Lynne Rippe (NERSC) and James Sethian (CRD). Five employees in the Computing Sciences organization are recipients of this year's Director's Awards for Exceptional Achievement,

  17. NERSC, CRD Staff Honored with Berkeley Lab Director's Achievement Awards

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

    NERSC, CRD Staff Honored with Berkeley Lab Director's Achievement Awards NERSC, CRD Staff Honored with Berkeley Lab Director's Achievement Awards October 25, 2016 Several staff in Berkeley Lab's Computing Sciences organization are recipients of this year's Director's Awards for Exceptional Achievement. The honorees will be recognized in a ceremony to be held Nov. 17 at 3 p.m. in the Bldg. 50 Auditorium. The Director's Awards program rewards significant achievements of Lab employees. Each year,

  18. NREL's Kurtz, Tegen Honored for Clean Energy Leadership - News Releases |

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

    NREL NREL's Kurtz, Tegen Honored for Clean Energy Leadership July 22, 2016 Photo shows Sarah Kurtz. Sarah Kurtz The U.S. Clean Energy Education & Empowerment (C3E) program has honored Sarah Kurtz and Suzanne Tegen of the Energy Department's National Renewable Energy Laboratory (NREL) for their leadership and achievement in the field of renewable energy. The C3E program, led by the Energy Department in collaboration with the Stanford Precourt Institute for Energy and the MIT Energy

  19. Y-12 earns communications honors | Y-12 National Security Complex

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

    earns communications ... Y-12 earns communications honors Posted: June 27, 2012 - 9:38am The Y-12 National Security Complex received multiple communications awards during two recent events. At the annual V Awards gala held by the Volunteer Chapter of the Public Relations Society of America, Y-12 products received nine awards, including four first-place honors. The 2011 issues of the Y-12 Report, Y-12's triannual magazine, won first place in government or public service magazines and periodicals.

  20. Y-12 earns communications honors | Y-12 National Security Complex

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

    earns communications ... Y-12 earns communications honors Posted: September 5, 2013 - 4:06pm The Y-12 National Security Complex received multiple communications awards during three events earlier this year. The Volunteer Chapter of the Public Relations Society of America held their annual "V" Awards for public relations programs and products, and Y-12 received six awards, including a first-place honor for The Y-12 Times, the employee newsletter. Other award winners included the Human

  1. Ten Los Alamos scientists honored by American Physical Society

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

    Scientists honored by American Physical Society Ten Los Alamos scientists honored by American Physical Society Tariq Aslam, Steven Batha, Eric Bauer, Hou-Tong Chen, Diego Alejandro Dalvit, Dinh Nguyen, Alan Perelson, Filip Ronning, Alexander Saunders and Glen Wurden were named this week by the national organization. November 12, 2015 Tariq Aslam, Steven Batha, Eric Bauer, Hou-Tong Chen, Diego Alejandro Dalvit, Dinh Nguyen, Alan Perelson, Filip Ronning, Alexander Saunders and Glen Wurden Tariq

  2. Thirteen Department of Energy Researchers Honored with the Presidential

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

    Early Career Award for Scientists and Engineers | Department of Energy Energy Researchers Honored with the Presidential Early Career Award for Scientists and Engineers Thirteen Department of Energy Researchers Honored with the Presidential Early Career Award for Scientists and Engineers September 26, 2011 - 5:21pm Addthis WASHINGTON, D.C. - President Obama named 13 U.S. Department of Energy (DOE) researchers as recipients of the Presidential Early Career Award for Scientists and Engineers

  3. Thirteen Department of Energy-Funded Researchers Honored with the

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

    Presidential Early Career Awards for Scientists and Engineers | Department of Energy Energy-Funded Researchers Honored with the Presidential Early Career Awards for Scientists and Engineers Thirteen Department of Energy-Funded Researchers Honored with the Presidential Early Career Awards for Scientists and Engineers July 23, 2012 - 10:02am Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - President Obama named 13 U.S. Department of Energy-funded researchers as recipients of the

  4. Hispanic Heritage Month - Honoring a Heritage and Individual Success |

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

    Department of Energy Hispanic Heritage Month - Honoring a Heritage and Individual Success Hispanic Heritage Month - Honoring a Heritage and Individual Success October 10, 2012 - 9:59am Addthis Dr. Karina Edmonds, the Department's Technology Transfer Director, speaks with Joan Michelson of Green Connections Radio about women in STEM last July. This week she is receiving a Career Achievement Award from Women of Color Magazine. Dr. Karina Edmonds, the Department's Technology Transfer Director,

  5. Honoring Hispanic Heritage Month and Renewing the American Dream |

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

    Department of Energy Honoring Hispanic Heritage Month and Renewing the American Dream Honoring Hispanic Heritage Month and Renewing the American Dream September 15, 2011 - 11:03am Addthis Bill Valdez Bill Valdez Director of Workforce Management Today we kick-off Hispanic Heritage Month, celebrating under the theme of "Renewing the American Dream." The Energy Department joins the rest of the Administration in participating in a series of events that reflect various factors of the

  6. NNSA Honors SRS Employees for Excellence | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Honors SRS Employees for Excellence Wednesday, November 4, 2015 - 10:29am NNSA Blog Don Zecha, center, representative of the Savannah River Site R&D Assembly Load and Test Team, accepts the Defense Programs Award of Excellence from NNSA-Savannah River Field Office Manager Doug Dearolph, left, and NNSA Acting Deputy Administrator for Defense Programs Brigadier General S.L. Davis. AIKEN, S.C. -- The National Nuclear Security Administration has honored six teams of

  7. Comments by Mary Celeste Harris on the Emergency Operation of Mirant's

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

    Potomac River Generating Station. | Department of Energy Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. Comments by Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. Docket No. EO-05-01: Comments by Mary Celeste Harris on the Emergency Operation of Mirant's Potomac River Generating Station. "I am writing in response to your order of December 20, 2005, declaring the emergency operation of Mirant's

  8. Brothers Harris and Sable provide spark and foundation for physicist's work

    Office of Scientific and Technical Information (OSTI)

    | OSTI, US Dept of Energy Office of Scientific and Technical Information Brothers Harris and Sable provide spark and foundation for physicist's work Back to the OSTI News Listing for 2005 Brother Harris provided the spark and Brother Sable provided the foundation for Tony Mezzacappa's early interest in physics. "I credit my getting involved in physics to a high school physics teacher, Brother Harris of Monsignor Farrell High School on Staten Island," says Dr. Mezzacappa, Corporate

  9. TO. TO. , W. B; Harris, Chief, Industrial Hygiene'Branch DA ...

    Office of Legacy Management (LM)

    To determine the minimum explosive concent d. To determine minimum electrical energy necc ... B. Harris - 2 5 3, Distribution of Personnel a. Dr. I. Hartm ann - Chief, Explosive ...

  10. Cristal Jones-Harris | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    Jones-Harris has 20 years of teaching experience educating high-need secondary student populations in robotics, information technology and Advanced Placement Computer Science. Dr. ...

  11. Development of the spare parts program at Shearon Harris

    SciTech Connect

    Roberts, A.J.

    1987-01-01

    Throughout construction, testing, and commercial operation of a nuclear power plant, utilities have a need for spare parts and consumables that must meet a wide range of technical and quality assurance (QA) requirements. The applications for which parts and consumables may be used need to be identified prior to procurement to ensure that the design basis of the plant is not compromised. The spare parts program at Shearon Harris nuclear power plant supported the maintenance department with the proper parts when needed for all but 5% of the maintenance work requests.

  12. Honoring 20 years of the Tennessee Valley Coridor | Y-12 National...

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

    Honoring 20 years of the ... Honoring 20 years of the Tennessee Valley Coridor The mp4 video format is not supported by this browser. Download video Captions: On Time: 4:58 min. ...

  13. Secretary’s Honor Awards Recognize EM’s Tank Cleanup, Closure

    Office of Energy Efficiency and Renewable Energy (EERE)

    WASHINGTON, D.C. – The Energy Department honored EM for achievements in its work to close high-level radioactive waste tanks as part of the annual Secretarial Honor Awards Ceremony Monday.

  14. Y-12 honors 9-11's fallen heroes | National Nuclear Security...

    National Nuclear Security Administration (NNSA)

    Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at NNSA Blog Home NNSA Blog Y-12 honors 9-11's fallen heroes Y-12 honors 9-11's fallen heroes Local firefighters and...

  15. Charles Worthington | Department of Energy

    Energy.gov [DOE] (indexed site)

    Native American Heritage Month | Department of Energy Students and faculty participating in AIREI gather at the one-week Energy Summer Institute, held at NREL last summer. Students and faculty participating in AIREI gather at the one-week Energy Summer Institute, held at NREL last summer. Dot Harris Dot Harris Director, Office of Economic Impact and Diversity Throughout November, we celebrate Native American Heritage Month as a country, honoring the first people who lived in the United

  16. OSTI honored with Anderson County Combined Federal Campaign Awards | OSTI,

    Office of Scientific and Technical Information (OSTI)

    US Dept of Energy Office of Scientific and Technical Information honored with Anderson County Combined Federal Campaign Awards Back to the OSTI News Listing for 2011 At the Anderson County Combined Federal Campaign (CFC) 2010 Awards Luncheon today, OSTI was honored with two awards: a 1st Place Gold Award "for setting the mark in employee participation to the 2010-2011 Combined Federal Campaign in Anderson County" and a 2nd Place Silver Award "for setting the mark in per capita

  17. R&D 100 Awards Honor NREL Research

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

    R&D 100 Awards Honor NREL Research For more information contact: George Douglas 303-275-4096 e-mail: George Douglas Golden, Colo., Sept. 21, 1999 — Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory will be honored Thursday with two R&D 100 awards. The awards are given each year by the editors of R&D Magazine for what they consider to be among the year's 100 most significant innovations. For 1999, the magazine identified NREL's Advanced

  18. DOE Shares Funding Opportunities and Honors Small Business Award Recipients

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

    | Department of Energy DOE Shares Funding Opportunities and Honors Small Business Award Recipients DOE Shares Funding Opportunities and Honors Small Business Award Recipients July 22, 2011 - 4:19pm Addthis May 11, 2011 The U.S. Department of Energy, the largest civilian contracting agency within the Federal government, is holding its 12th Annual Small Business Conference & Expo at the Kansas City Convention Center in Kansas City, Missouri from May 10-12, 2011. Drawing more than 1,600

  19. 'Giant' Nanocrystal Quantum Dots

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

    'Giant' Nanocrystal Quantum Dots - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary ...

  20. MEMORANDUM TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery

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

    MEMORANDUM TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Richard Cowart, Chair DATE: September 24, 2014 RE: Status and Recommendations for Electricity Delivery Workforce _________________________________________________________________________ Introduction In October, 2012 the EAC submitted a paper to the Secretary of the U.S. Department of Energy recommending actions that

  1. TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery

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

    Figure 1 TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Richard Cowart, Chair DATE: September 30, 2015 RE: Grid Modernization: ARRA Accomplishments and Recommendations for Moving Forward ________________________________________________________________________ 1 Background and Purpose The U.S. Department of Energy (DOE)'s smart grid portion of the American Reinvestment and

  2. BTO Standards Team Honored for Record-Breaking Work in 2015 | Department of

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

    Energy Standards Team Honored for Record-Breaking Work in 2015 BTO Standards Team Honored for Record-Breaking Work in 2015 September 21, 2016 - 11:19am Addthis BTO Standards Team Honored for Record-Breaking Work in 2015 Photo courtesy of iStockphoto/JaniceRichard. Photo courtesy of iStockphoto/JaniceRichard. BTO Standards Team Honored for Record-Breaking Work in 2015 Photo courtesy of iStockphoto/JaniceRichard. At the Secretarial Honor and Presidential Rank Awards, the DOE Building

  3. Quantum Dots: Theory

    SciTech Connect

    Vukmirovic, Nenad; Wang, Lin-Wang

    2009-11-10

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

  4. NREL Employees Honored at Annual Awards Luncheon - News Releases | NREL

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

    NREL Employees Honored at Annual Awards Luncheon April 18, 2006 Golden, Colo. & During the past 25 years at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), Bob Noun and Walter Short have shaped the way renewable energy and energy efficient technologies are seen and understood by the public, elected officials and other stakeholders. With a realistic and technically sound vision of the potential of renewable energy, Noun has built strategic national and

  5. NREL Recognizes Solar Pioneer with National Honor - News Releases | NREL

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

    NREL Recognizes Solar Pioneer with National Honor Annan Directed Federal Research Efforts for More Than Two Decades November 23, 2004 Golden, Colo. - The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) has presented the 2004 Paul Rappaport Renewable Energy and Energy Efficiency Award to Robert "Bud" Annan, who oversaw government-sponsored research into solar energy for more than 20 years. Annan is credited with conceiving and directing research programs that

  6. NREL: Geothermal Technologies - Geothermal Energy Association Honors Two

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

    NRELians with Top Recognition Geothermal Energy Association Honors Two NRELians with Top Recognition June 10, 2015 Dan Getman and Jordan Macknick were recognized by the Geothermal Energy Association (GEA) during its National Geothermal Summit on June 3, 2015, in Reno, Nevada. Each year, GEA selects companies and individuals who have advanced technology, spurred economic development, and worked to protect the environment during the past year. Dan developed, in collaboration with the U.S.

  7. NREL: News - Technology Review Honors National Renewable Energy Lab

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

    Engineer as One of the World's Top Young Innovators Technology Review Honors National Renewable Energy Lab Engineer as One of the World's Top Young Innovators Cover Art for State of Innovation Technology Magazine Golden, Colo., May 20, 2002 The U.S. Department of Energy's National Renewable Energy Laboratory today announced that Matt Keyser, an engineer in the Center for Transportation Technologies and Systems, has been chosen as one of the world's 100 Top Young Innovators by Technology

  8. Sandia National Laboratories: Explosives legend Paul Cooper honored by NYU

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

    Polytechnic Paul Cooper Facebook Twitter YouTube Flickr RSS News Explosives legend Paul Cooper honored by NYU Polytechnic By Nancy Salem Photography By Randy Montoya Thursday, November 12, 2015 Named Distinguished Alumnus of the Year Paul Cooper Paul Cooper built a global reputation as an explosives engineer and passed his knowledge to hundreds of Sandians in courses he taught for more than 35 years. His career was recognized by the New York University Polytechnic School of Engineering,

  9. Energy Department Early Career Scientists and Engineers Honored |

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

    Department of Energy June 13, 2005 - 4:50pm Addthis WASHINGTON, DC -- At an awards ceremony today, nine "early career" researchers funded by the Department of Energy (DOE) and its National Nuclear Security Administration (NNSA) were honored for their work ranging from the development and synthesis of nanoscale materials to improved medical diagnostic imaging. DOE's scientists are among 58 researchers supported by eight federal departments and agencies receiving the Presidential

  10. Energy Department Early Career Scientists and Engineers Honored |

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

    Department of Energy July 26, 2006 - 4:43pm Addthis WASHINGTON, DC - At a White House ceremony today, seven "early career" researchers, funded by the U.S. Department of Energy's (DOE) Office of Science and its National Nuclear Security Administration (NNSA), were honored for their work ranging from the study of elements produced by exploding stars, to the validation of computer simulations in support of the nation's nuclear stockpile stewardship program. DOE's scientists are among

  11. Energy Department Early Career Scientists and Engineers Honored |

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

    Department of Energy November 1, 2007 - 4:21pm Addthis WASHINGTON, DC - At a White House ceremony today, eight "early career" researchers, funded by the U.S. Department of Energy's (DOE) Office of Science and its National Nuclear Security Administration (NNSA), were honored for their work ranging from computer vision and machine intelligence to identifying genetic switches in the human genome. DOE's scientists are among 58 researchers supported by nine federal departments and

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

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) National group honors Sandia radiation effects expert Monday, July 21, 2014 - 1:26pm NNSA Blog Sandia radiation effects researcher Jim Schwank has won the 2014 IEEE Nuclear and Plasma Sciences Society Merit Award, which recognizes outstanding technical contributions to the fields of nuclear and plasma sciences. The award is based on the importance of individual technical contributions, importance of technical contributions made by teams the individual led,

  13. Argonne nanoscientist honored as fellow of the American Physical Society |

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

    Argonne National Laboratory Argonne nanoscientist honored as fellow of the American Physical Society By Joan Koka * November 4, 2016 Tweet EmailPrint Gary Wiederrecht, a group leader and senior nanoscientist at the U.S. Department of Energy's (DOE's) Argonne National Laboratory, has been elected a fellow of the American Physical Society. The society, which represents over 51,000 physicists from around the world, awards fellowship to researchers who have made "exceptional contributions

  14. Princeton Plasma Physics Laboratory Honors Three Researchers | Princeton

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

    Plasma Physics Lab Princeton Plasma Physics Laboratory Honors Three Researchers March 12, 2012 Tweet Widget Google Plus One Share on Facebook Gallery: Kenneth Hill received the Kaul Prize for Excellence in Plasma Physics Research and Technology Development. (Photo by Elle Starkman, PPPL Office of Communications) Kenneth Hill received the Kaul Prize for Excellence in Plasma Physics Research and Technology Development. Robert Ellis received the PPPL Distinguished Engineering Fellow award.

  15. PPPL honors engineer Charles Neumeyer and physicist Rajesh Maingi |

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

    Princeton Plasma Physics Lab PPPL honors engineer Charles Neumeyer and physicist Rajesh Maingi By John Greenwald and Raphael Rosen October 12, 2015 Tweet Widget Google Plus One Share on Facebook PPPL engineer Charles Neumeyer and PPPL physicist Rajesh Maingi (Photo by Elle Starkman/PPPL Office of Communications) PPPL engineer Charles Neumeyer and PPPL physicist Rajesh Maingi Gallery: PPPL engineer Charles Neumeyer (Photo by Elle Starkman/ PPPL Office of Communications) PPPL engineer Charles

  16. PPPL honors engineer Charles Neumeyer and physicist Rajesh Maingi |

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

    Princeton Plasma Physics Lab PPPL honors engineer Charles Neumeyer and physicist Rajesh Maingi By John GreenwaldRaphael Rosen October 12, 2015 Tweet Widget Google Plus One Share on Facebook PPPL engineer Charles Neumeyer and PPPL physicist Rajesh Maingi (Photo by Photo Credit: Elle Starkman/PPPL Office of Communications) PPPL engineer Charles Neumeyer and PPPL physicist Rajesh Maingi Gallery: PPPL engineer Charles Neumeyer (Photo by Photo Credit: Elle Starkman/PPPL Office of Communications)

  17. PPPL honors physicists Steven Sabbagh and Gregory Hammett | Princeton

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

    Plasma Physics Lab PPPL honors physicists Steven Sabbagh and Gregory Hammett By John Greenwald May 28, 2013 Tweet Widget Google Plus One Share on Facebook From left: Steven Sabbagh and Gregory Hammett (Photo by Elle Starkman/ PPPL Office of Communications) From left: Steven Sabbagh and Gregory Hammett Gallery: Steven Sabbagh (Photo by Elle Starkman/ PPPL Office of Communications) Steven Sabbagh Gregory Hammett (Photo by Elle Starkman/ PPPL Office of Communications) Gregory Hammett PPPL

  18. Energy Department Scientists and Engineers Honored with Presidential Early

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

    Career Awards | U.S. DOE Office of Science (SC) Energy Department Scientists and Engineers Honored with Presidential Early Career Awards News News Home Featured Articles Science Headlines 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Highlights Presentations & Testimony News Archives Communications and Public Affairs Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 12.19.08 Energy

  19. Energy Saving Buildings Win National and Local Honors

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

    Saving Buildings Win National and Local Honors For more information contact: e:mail: Public Affairs Golden, Colo., Nov. 21, 1997—Two prestigious awards—one local, one national—prove that when it comes to designing energy efficient buildings, the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) practices what it preaches. The laboratory's Thermal Test Facility (TTF) won the 1997 Jefferson County Design Excellence Award in the Sustainable Development category. The

  20. NNSA honors Los Alamos in 2014 Sustainability Awards

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

    2014 Sustainability Awards NNSA honors Los Alamos in 2014 Sustainability Awards Los Alamos is among the winners, with honorees in both the Best in Class and Environmental Stewardship categories. December 3, 2014 Los Alamos National Laboratory meteorologist and honoree Jean Dewart fostered behavioral changes across the Laboratory, supporting Earth Day and enduring practices of site sustainability, worker lifestyle changes, reduction in electrical and heating use and green transportation

  1. National Nuclear Security Administration honors Y-12 employees | Y-12

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

    National Security Complex National Nuclear Security ... National Nuclear Security Administration honors Y-12 employees Posted: September 25, 2012 - 12:55pm Joining Oder (center) to present the awards was Mark Padilla, NNSA Production Office assistant manager for programs and projects (right) and Joe Henry, chief operating officer of B&W Y-12. National Nuclear Security Administration Office of Nuclear Weapons Stockpile Director Joseph Oder recently visited the Y-12 National Security

  2. Jefferson County honors NREL with Genesis Award - News Releases | NREL

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

    Jefferson County honors NREL with Genesis Award March 7, 2003 Golden, CO. - The U.S. Department of Energy's National Renewable Energy Laboratory (NREL) has received the Jefferson Economic Council's (JEC) Genesis Award for the Lab's contribution to the economic vitality of Jefferson County and its citizens. The annual award is given on behalf of Jefferson County in recognition of outstanding economic development that has significantly added to the long-term vitality of the county. NREL was

  3. TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery

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

    TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Richard Cowart, Chair DATE: September 25, 2014 RE: Expanding and Modernizing the Electric Power Delivery System for the 21 st Century Introduction The United States electricity system is undergoing more change than it has in many decades. The causes are numerous: a changing mix of resources driven by lowering prices, climate

  4. TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery

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

    Figure 1. Planned and Deployed Distributed Storage as of August 2014 TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Richard Cowart, Chair DATE: March 18, 2016 RE: National Distributed Energy Storage in the Electric Grid 1. Executive Summary The distributed energy storage (DES) segment of the energy storage market currently has the highest growth rate in the sector. As

  5. TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery

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

    TO: Honorable Patricia Hoffman, Assistant Secretary for Electricity Delivery and Energy Reliability, U.S. Department of Energy FROM: Electricity Advisory Committee (EAC) Susan Tierney, Chair DATE: September 29, 2016 RE: The Value of a VAr - Perspectives on Electric Grid Voltage Support Concept and Goals of This Document The core purpose of this white paper is to delineate between two crucial forms of power supplied by and to the nation's electric grid(s). The need for the first-the

  6. The Honorable Ernest Moniz Secretary, United States Department of Energy

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

    ME1 19100572v.1 October 22, 2014 The Honorable Ernest Moniz Secretary, United States Department of Energy 1000 Independence Avenue, SW Washington, D.C. 20585 RE: Separate Product Classes for Non-Weatherized Residential Gas Furnaces Dear Secretary Moniz: Thank you for the opportunity to brief your staff in recent weeks on an impact analysis of a national condensing furnace standard, which was conducted jointly by the American Gas Association (AGA), the American Public Gas Association (APGA), and

  7. Aviation Week Honors KCNSC Relocation | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Aviation Week Honors KCNSC Relocation Friday, November 13, 2015 - 6:15pm Kansas City National Security Campus Relocation Leader Brad Hughes, left, and NNSA Kansas City Field Office Site Manager Mark Holecek The Kansas City National Security Campus relocation project was recognized as an industry benchmark last week at the 12th annual Aviation Week Program Excellence Awards competition. Awards were presented Nov. 4 in Scottsdale, Arizona. The NSC's contractor,

  8. Centauri High School Teacher Honored as Colorado Outstanding Biology

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

    Cement (2010 MECS) Cement (2010 MECS) Manufacturing Energy and Carbon Footprint for Cement Sector (NAICS 327310) Energy use data source: 2010 EIA MECS (with adjustments) Footprint Last Revised: February 2014 View footprints for other sectors here. Manufacturing Energy and Carbon Footprint Cement (126.44 KB) More Documents & Publications MECS 2006 - Cement Glass and Glass Products (2010 MECS) Textiles Teacher

    Centauri High School Teacher Honored as Colorado Outstanding Biology Teacher

  9. Honoring the Legacy of Martin Luther King Jr. | Department of Energy

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

    the Legacy of Martin Luther King Jr. Honoring the Legacy of Martin Luther King Jr. January 19, 2012 - 1:32pm Addthis Honoring the Legacy of Martin Luther King Jr. Karissa Marcum Public Affairs Specialist, Office of Public Affairs Employees across the Department honored Dr. Martin Luther King Jr. on Tuesday, saluting the civil rights legend during a lively ceremony at Department headquarters. Secretary Chu joined Lynn Cothren, former personal assistant to Coretta Scott King, and Reverend C.T.

  10. White House Honors Federal Agencies for Saving Taxpayers $133 Million in

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

    Energy Costs by Increasing Efficiency Measures | Department of Energy Honors Federal Agencies for Saving Taxpayers $133 Million in Energy Costs by Increasing Efficiency Measures White House Honors Federal Agencies for Saving Taxpayers $133 Million in Energy Costs by Increasing Efficiency Measures November 2, 2007 - 4:21pm Addthis Recipients of Presidential Awards for Leadership in Federal Energy Management Recognized WASHINGTON, DC - The White House today honored five energy management teams

  11. Y-12 honors its inventors with Technology Transfer awards | Y-12 National

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

    Security Complex Y-12 honors its inventors ... Y-12 honors its inventors with Technology Transfer awards Posted: July 22, 2015 - 11:31am Y-12 recently honored inventors at the eleventh annual Technology Transfer Awards Ceremony. Twenty-nine Y-12 inventors were recognized for their technology and innovation during the recent 11th Annual Technology Transfer Awards. The site has long been producing technologies initially used at Y-12 and later transferred to the private sector. The patents that

  12. Two Los Alamos scientists honored with E.O. Lawrence Awards

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

    Two Los Alamos scientists honored with E.O. Lawrence Awards Two Los Alamos scientists honored with E.O. Lawrence Awards Outstanding performance in two vital mission areas resulted in prestigious awards for two Los Alamos National Laboratory scientists this week. May 21, 2015 Two Los Alamos scientists honored with E.O. Lawrence Awards Los Alamos National Laboratory, Los Alamos, New Mexico Contact Los Alamos National Laboratory Nancy Ambrosiano Communications Office (505) 667-0471 Email

  13. DOE Bestows 5 Honors on EM in Esteemed Awards Program | Department...

    Office of Environmental Management (EM)

    ... Secretary's Honor Awards: Recognizing Employee Excellence This cylinder hauler at Paducah's Babcock & Wilcox Conversion Services plant delivers the first of DOE's 14-ton depleted ...

  14. EPA Honors NREL-Sponsored Habitat For Humanity Home - News Releases...

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

    EPA Honors NREL-Sponsored Habitat For Humanity Home Energy Efficient House Earns New ... the U.S. Environmental Protection Agency (EPA) with the Energy Star New Millennium ...

  15. Y-12 honors companies, advocates for small-business success | Y-12 National

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

    Security Complex honors companies, ... Y-12 honors companies, advocates for small-business success Posted: July 18, 2012 - 3:48pm The Y-12 National Security Complex honored six small businesses for their exceptional contributions to Y-12's missions during Fiscal Year 2011 at the annual Socioeconomic Programs Awards reception held Thursday, July 12. Two Y-12 employees also were acknowledged for their role as small-business advocates. Honored as Y-12 2012 Small Businesses of the Year were:

  16. DOT specification packages evaluation

    SciTech Connect

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

    1991-01-01

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

  17. Honoring Nuclear Security Workers on the National Day of Remembrance |

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

    Department of Energy Nuclear Security Workers on the National Day of Remembrance Honoring Nuclear Security Workers on the National Day of Remembrance October 31, 2011 - 11:54am Addthis Workers dismantle a remaining B53, ensuring that the system will never again be part of the U.S. nuclear weapons stockpile. | Credit: NNSA photo Workers dismantle a remaining B53, ensuring that the system will never again be part of the U.S. nuclear weapons stockpile. | Credit: NNSA photo Secretary Chu

  18. CNS employees greet Honor Air veterans | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) CNS employees greet Honor Air veterans Thursday, December 10, 2015 - 1:46pm NNSA Blog Y-12 Deputy Site Manager Gene Sievers, left, and ProForce's Neal Wolfenbarger pose for photo at McGhee Tyson Airport in Knoxville, TN, as Wolfenbarger waits on his uncle to return from Washington, D.C. Veterans Day is important to all Americans, but it carries an even more elevated meaning to those who have served our country in the Armed Forces. Not only are they recognized for

  19. Tierra Concrete Homes Honored with Energy Star Award

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

    Tierra Concrete Homes Honored with Energy Star Award For more information contact: Sarah Holmes Barba, 303-275-3023 email: Sarah Homes Barba Golden, Colo., August 8, 2001 - Tierra Concrete Homes, Inc. of Pueblo, Colo., has been recognized as a leader in energy-efficient home building by Energy Star, a national program that develops energy-saving partnerships with the home building industry. The first-ever "Most Energy-Efficient Homes of the New Millennium" award was presented to

  20. Microsoft Word - ex parte memo deLaski Harris.doc

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

    On Friday, November 12 th , I spoke with DOE General Counsel Scott Blake Harris by telephone. This conversation concerned what process DOE might use for completing the new test method for residential refrigerators in light of concerns raised by the Association of Home Appliance Manufacturers.

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

    SciTech Connect

    Porter, M.

    1989-03-01

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

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

    SciTech Connect

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

    1989-09-01

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

  3. Women of Wind Energy Honor Wind Program Researchers | Department of Energy

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

    Women of Wind Energy Honor Wind Program Researchers Women of Wind Energy Honor Wind Program Researchers August 1, 2013 - 2:54pm Addthis This is an excerpt from the Second Quarter 2013 edition of the Wind Program R&D Newsletter. Chicago, Illinois-The Women of Wind Energy (WoWE) honored Ian Baring-Gould, Wind Powering America's National Technical Director, and Dr. Julie Lundquist, assistant professor at the University of Colorado Boulder, with a joint appointment at the U.S. Department of

  4. BETO-Funded Team Honored by the American Chemical Society | Department of

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

    Energy Team Honored by the American Chemical Society BETO-Funded Team Honored by the American Chemical Society April 20, 2015 - 4:34pm Addthis Two Pacific Northwest National Laboratory (PNNL) scientists were part of a team honored at the 249th American Chemical Society (ACS) National Meeting & Exposition on March 25, 2015. The team, which consisted of John Frye and Alan Zacher of PNNL and Todd Werpy of Archer Daniels Midland Company, received the ACS Award for Affordable Green Chemistry

  5. DOE-Funded Researchers Honored by R&D Magazine: Leader of DOE Artificial

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

    Researchers Honored by R&D Magazine DOE-Funded Researchers Honored by R&D Magazine October 20, 2005 - 12:23pm Addthis Leader of the DOE Artificial Retina Project Named "Innovator of the Year;" Scientists and Engineers at 12 DOE Labs Win 29 R&D 100 Awards for 2005 WASHINGTON, DC-Secretary of Energy Samuel W. Bodman today congratulated the leader of the Department of Energy's Artificial Retina Project, who has been honored as R&D Magazine's "Innovator of the

  6. UPF team marches in honor of fallen soldiers | Y-12 National Security

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

    Complex team marches in honor ... UPF team marches in honor of fallen soldiers Posted: May 25, 2016 - 4:38pm UPF's five-person team won the Team Civilian Light Full March award for completing a relay in under eight hours. From left: Jim Schumacher, Matt Crookshanks, Brad Kramer, Tina Sowers and Jamie Lesko at the finish line. Nine UPF staff, including a combat veteran, honored fallen soldiers and their families by participating in the ninth annual Mountain Man Memorial March April 22-23.

  7. OSTIblog Articles in the honor Topic | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information honor Topic Do You Have a Favorite Science Teacher? Adopt-A-Doc in Their Honor by Debbie Nuchols 30 Aug, 2012 in Products and Content 4268 AdoptADoc2012_slide.jpg Do You Have a Favorite Science Teacher? Adopt-A-Doc in Their Honor Read more about 4268 What is Adopt-A-Doc? Adopt-A-Doc is another way OSTI is working to increase the availability of important research. You can be a part of accelerating scientific discovery and help make important research

  8. CUG Honors NERSC Burst Buffer Early User Program with 'Best Paper'

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

    CUG Honors NERSC Burst Buffer Early User Program with 'Best Paper' CUG Honors NERSC Burst Buffer Early User Program with 'Best Paper' May 11, 2016 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov CUGaward NERSC was honored with the 2016 CUG Best Paper award for "Accelerating Science with the NERSC Burst Buffer Early User Program." Wahid Bhimji (right), shown here with CUG Program Chair Andrew Winfer, accepted the award on behalf of the NERSC team that authored the paper. A new

  9. President Obama to Honor Nation’s Leading Scientists and Innovators

    Office of Energy Efficiency and Renewable Energy (EERE)

    The White House announced the latest recipients of the National Medal of Science and National Medal of Technology and Innovation—our Nation’s highest honors for achievement and leadership in advancing the fields of science and technology.

  10. EMCBC Honored for Helping Administer American Recovery and Reinvestment Act Funds

    Energy.gov [DOE]

    DOE’s Office of Energy Efficiency and Renewable Energy (EERE) honored the Cincinnati-based EM Consolidated Business Center (EMCBC) this month for work EMCBC completed under the American Reinvestment and Recovery Act.

  11. EPA and DOE Honor 2015 Energy Star Partners of the Year for Leadership...

    Office of Environmental Management (EM)

    EPA and DOE Honor 2015 Energy Star Partners of the Year for Leadership on Energy ... NEWS MEDIA CONTACT (202) 586-4940 The U.S. Environmental Protection Agency (EPA) and the ...

  12. EERE Success Story-EPA and DOE Honor 2015 Energy Star Partners...

    Energy Saver

    EPA and DOE Honor 2015 Energy Star Partners of the Year, Recognizing Leadership and Action in Energy Efficiency, Featuring Better Buildings Challenge EERE Success Story-EPA and DOE ...

  13. DOE’s Worker-Focused Safety Program Honors Contractors Across EM Complex

    Energy.gov [DOE]

    Several contractors across the EM complex received honors in recent months in an important DOE safety program that turns to workers to assess, prevent, and control potential health and safety hazards.

  14. Energy Department and Environmental Protection Agency Honor 2014 Energy Star Partners of the Year

    Energy.gov [DOE]

    The U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE) are honoring 127 organizations for their commitment to protecting the environment through superior energy efficiency.

  15. Secretary Moniz to Honor Dr. Phil Sharp, 2015 Recipient of the...

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

    Secretary Moniz to Honor Dr. Phil Sharp, 2015 Recipient of the Schlesinger Medal for ... WASHINGTON - On January 20, 2016 at 10:00 AM, Energy Secretary Ernest Moniz will present ...

  16. Department of Energy Honors 50 ENERGY STAR® Partners that Saved Consumers $10 Billion

    Energy.gov [DOE]

    WASHINGTON, DC - The U.S. Department of Energy (DOE) and the U.S. Environmental Protection Agency (EPA) honored 50 companies, organizations and government entities that have helped to significantly...

  17. Geothermal Energy Association Honors NREL's Dr. Bharathan for Work in Condenser Technology

    Energy.gov [DOE]

    The Geothermal Energy Association (GEA) recently announced the finalists for the GEA Honors, which recognizes companies and individuals that have made significant contributions during the past year to advancing technology, spurring economic development or protecting the environment.

  18. CNS welcomes home 20th HonorAir Knoxville flight | Y-12 National...

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

    April 13, 2016, was another memorable day for HonorAir Knoxville as 125 war veterans ... McGhee Tyson Airport to greet the veterans who served in World War II, Korea and Vietnam. ...

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

    Energy.gov [DOE]

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

  20. Spotlight: Two Los Alamos scientists honored with E.O. Lawrence Awards

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

    Two Los Alamos scientists honored with E.O. Lawrence Awards Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Spotlight: Two Los Alamos scientists honored with E.O. Lawrence Awards Fryer and Dors noted for achievements in space physics, satellite radiation sensors July 1, 2015 Eric E. Dors (l) and Christopher L. Fryer (r) Eric E. Dors (l) and Christopher L. Fryer (r) Contact Linda Anderman Email Outstanding performance

  1. NREL Names a Director's Fellowship in Honor of Art Nozik | PV | NREL

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

    NREL Names a Director's Fellowship in Honor of Art Nozik May 31, 2016 Martin Keller, director of the Energy Department's National Renewable Energy Laboratory (NREL), is honoring acclaimed researcher Arthur Nozik by naming a Director's Fellowship after him. The Nozik Fellowship is available to early-career researchers who earned their Ph.D. in the last two years. A senior research fellow emeritus, Nozik joined NREL in 1978 when it was then known as the Solar Energy Research Institute. Nozik's

  2. NREL Names a Director's Fellowship in Honor of Art Nozik | Solar | NREL

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

    Names a Director's Fellowship in Honor of Art Nozik May 31, 2016 Martin Keller, director of the Energy Department's National Renewable Energy Laboratory (NREL), is honoring acclaimed researcher Arthur Nozik by naming a Director's Fellowship after him. The Nozik Fellowship is available to early-career researchers who earned their Ph.D. in the last two years. A senior research fellow emeritus, Nozik joined NREL in 1978 when it was then known as the Solar Energy Research Institute. Nozik's interest

  3. NREL Senior Research Fellow Honored by The Journal of Physical Chemistry -

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

    News Releases | NREL NREL Senior Research Fellow Honored by The Journal of Physical Chemistry January 10, 2007 Photo of Senior Research Fellow Arthur Nozik Arthur J. Nozik The American Chemical Society recently honored Arthur Nozik, a senior research fellow with the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), with a special publication of The Journal of Physical Chemistry B. The Dec. 21 issue was titled The Arthur J. Nozik Festschrift (Volume 110, Issue

  4. NREL Solar Researcher Honored with ASES Abbot Award - News Releases | NREL

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

    Solar Researcher Honored with ASES Abbot Award July 21, 2006 Photo of Dr. Chuck Kutscher, recipient of the Charles Greeley Abbot Award. Dr. Chuck Kutscher The American Solar Energy Society (ASES) honored Dr. Chuck Kutscher of the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) with the Charles Greeley Abbot Award during the recent ASES SOLAR 2006 conference. The Abbot Award recognizes individuals who have made significant career contributions to the field of solar

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

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

    Our Veterans through Jobs in Solar Energy Honoring Our Veterans through Jobs in Solar Energy November 10, 2015 - 10:00am Addthis Solar Ready Vets, created by the Department of Energy's SunShot Initiative, connects our nation's transitioning veterans to the growing solar energy industry. Dr. Elizabeth Sherwood-Randall Dr. Elizabeth Sherwood-Randall Deputy Secretary of Energy On Veterans Day, we honor the more than 21 million living American veterans. Here at the Department of Energy, we are

  6. Honors & Awards | U.S. DOE Office of Science (SC)

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

    Honors & Awards About About Home Organization Budget Field Operations Federal Advisory Committees History Scientific and Technical Information Honors & Awards Presidential Early Career Awards for Scientists and Engineers (PECASE) The Enrico Fermi Award The Ernest Orlando Lawrence Award DOE Nobel Laureates Federal Laboratory Consortium Excellence in Technology Transfer Awards R&D 100 Awards Jobs Brochures, Logos, & Information Resources Contact Contact Information Office of

  7. Team of NETL Scientists Honored By ASM International for Their Work on

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

    Team of NETL Scientists Honored By ASM International for Their Work on Platinum-Chromium Alloy for Coronary Stents Albany, Ore. - Scientists at the National Energy Technology Laboratory (NETL), and their colleagues, were recently honored with a 2015 ASM Engineering Materials Achievement Award from the materials science and engineering society ASM International. The NETL team received the prestigious award for their work on the development, transfer, and successful commercialization of a novel

  8. EERE Success Story-Utilities in California and Washington Receive Honors

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

    for Innovative Wind Deployment | Department of Energy Utilities in California and Washington Receive Honors for Innovative Wind Deployment EERE Success Story-Utilities in California and Washington Receive Honors for Innovative Wind Deployment August 22, 2013 - 12:00am Addthis EERE recognized utilities in California and Washington with the 2013 Public Power Wind award for outstanding efforts to accelerate the use of wind energy. Created in 2003 by the Department's Wind Powering America

  9. White House Honors Four Early-Career Sandia Researchers | National Nuclear

    National Nuclear Security Administration (NNSA)

    Security Administration | (NNSA) White House Honors Four Early-Career Sandia Researchers Tuesday, February 18, 2014 - 3:00pm Sandia National Laboratories researchers Matthew Brake, Adrian Chavez, Seth Root and Daniel Stick have been named by President Barack Obama as recipients of the Presidential Early Career Award for Scientists and Engineers (PECASE). The PECASE is the highest honor the U.S. government gives outstanding scientists and engineers who are beginning their careers. Read more.

  10. EERE Success Story-EPA and DOE Honor 2015 Energy Star Partners of the

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

    Year, Recognizing Leadership and Action in Energy Efficiency, Featuring Better Buildings Challenge | Department of Energy EPA and DOE Honor 2015 Energy Star Partners of the Year, Recognizing Leadership and Action in Energy Efficiency, Featuring Better Buildings Challenge EERE Success Story-EPA and DOE Honor 2015 Energy Star Partners of the Year, Recognizing Leadership and Action in Energy Efficiency, Featuring Better Buildings Challenge April 24, 2015 - 11:30am Addthis 128 businesses and

  11. Y-12 honors its inventors with Technology Transfer awards | Y-12 National

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

    Security Complex honors its inventors ... Y-12 honors its inventors with Technology Transfer awards Posted: May 23, 2016 - 8:30am Y-12 recently recognized 29 inventors at their annual Tech Transfer award ceremony. The group was awarded 13 patents and submitted more than 30 invention disclosures in the past year. OAK RIDGE, Tennessee - Twenty-nine Y 12 inventors were recognized for their technology and innovative accomplishments during the recent 12th annual Technology Transfer Awards

  12. Top Los Alamos technology spinoff ideas honored at DisrupTech

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

    Los Alamos technology spinoff ideas honored at DisrupTech Top Los Alamos technology spinoff ideas honored at DisrupTech Three potential business partnership projects emerged from the 2015 DisrupTech competition at Los Alamos National Laboratory with winning proposals. July 23, 2015 Taking the "Best Pitch" prize of $10,000 in internal Laboratory funding was the aptly named Cosmic Plumbing Inspection project, described by physicist Matt Durham. The project uses cosmic particles called

  13. CNS veterans greet Honor Air veterans | Y-12 National Security Complex

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

    veterans greet Honor ... CNS veterans greet Honor Air veterans Posted: December 3, 2015 - 3:32pm Veterans Day is important to all Americans, but it carries an even more elevated meaning to those who have served our country in the Armed Forces. Not only are they recognized for their contribution, but the day demonstrates that the unique bonds brought about through military service remain strong long after the conflicts have finished. Two Consolidated Nuclear Security managers and veterans, Ken

  14. Promising future of quantum dots explored in conference

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

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

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

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

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

  16. Few Electron Quantum Dot coupling ...

    Office of Scientific and Technical Information (OSTI)

    Electron Quantum Dot coupling to Donor Implanted Electron Spins Martin Rudolph1. P. Harvey-Collard12, E. Nielson1, J.K. Gamble1, R. Muller1, T. Jacobson1, G. Ten-Eyck1, J. ...

  17. NREL Solar Technologies Recognized with Special R&D 100 Honors - News

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

    Releases | NREL NREL Solar Technologies Recognized with Special R&D 100 Honors October 24, 2008 Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) took home high honors from Editors of R&D Magazine recently for two separate solar cell technologies that were named "the most revolutionary technologies of the year." At its annual awards gala for the winners of the R&D 100 awards in Chicago Oct. 16, R&D Magazine announced that an

  18. NREL Technologies Honored at R&D 100 Awards Ceremony | Community | NREL

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

    NREL Technologies Honored at R&D 100 Awards Ceremony November 4, 2016 The Energy Department's National Renewable Energy Laboratory (NREL) last night received three R&D 100 Awards, an honor presented by R&D Magazine and considered to be the Oscars of innovation. The prize in the Mechanical/Materials category was awarded to the EcoSnap-AC Heat Pump System created by Chuck Booten and Jon Winkler from NREL's Advanced Residential Buildings research group. The award in the Analytical/Test

  19. High-impact innovations honored as R&D 100 Award finalists

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

    High-impact innovations honored as R&D 100 Award finalists High-impact innovations honored as R&D 100 Award finalists Nine Los Alamos National Laboratory innovations were selected as finalists for the 2016 R&D 100 Awards. August 24, 2016 Pulak Nath, of Los Alamos National Laboratory, holds the Pulmonary Lung Model (PulMo). Pulak Nath, of Los Alamos National Laboratory, holds the Pulmonary Lung Model (PulMo). Contact Nick Njegomir Communications Office (505) 665-9394 Email The

  20. Los Alamos honored by Española Valley Chamber of Commerce

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

    LANL Honored By Española Valley Chamber of Commerce Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:November 2, 2016 all issues All Issues » submit Los Alamos honored by Española Valley Chamber of Commerce The Espanola Valley Chamber of Commerce recognized the Lab for its support to the chamber and the entire Espanola Valley with a President's Choice Award. February 1, 2013 dummy image Read our archives. Contacts Editor Linda

  1. PPPL senior physicist Wei-li Lee honored at week-long symposium | Princeton

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

    Plasma Physics Lab senior physicist Wei-li Lee honored at week-long symposium By Raphael Rosen November 11, 2016 Tweet Widget Google Plus One Share on Facebook PPPL senior physicist Wei-li Lee (Photo by Elle Starkman) PPPL senior physicist Wei-li Lee Physicists from around the world gathered at the University of California, Irvine this past summer for a symposium in honor of Wei-li Lee, a senior physicist at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL).

  2. Secretary Moniz to Honor Dr. Phil Sharp, 2015 Recipient of the Schlesinger

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

    Medal for Energy Security, at Department of Energy Event | Department of Energy to Honor Dr. Phil Sharp, 2015 Recipient of the Schlesinger Medal for Energy Security, at Department of Energy Event Secretary Moniz to Honor Dr. Phil Sharp, 2015 Recipient of the Schlesinger Medal for Energy Security, at Department of Energy Event January 14, 2016 - 10:40am Addthis News Media Contact 202-586-4940 DOENews@hq.doe.gov WASHINGTON - On January 20, 2016 at 10:00 AM, Energy Secretary Ernest Moniz will

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

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

    Award | Department of Energy Powering America's Wind for Schools Team Honored with Wirth Chair Award Wind Powering America's Wind for Schools Team Honored with Wirth Chair Award May 1, 2012 - 2:46pm Addthis This is an excerpt from the Second Quarter 2012 edition of the Wind Program R&D Newsletter. The University of Colorado at Denver and the Wirth Chair awarded the Energy Department's National Renewable Energy Laboratory (NREL) a Wirth Chair Sustainability Award for its work on the Wind

  4. PPPL senior physicist Wei-li Lee honored at week-long symposium | Princeton

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

    Plasma Physics Lab senior physicist Wei-li Lee honored at week-long symposium By Raphael Rosen November 11, 2016 Tweet Widget Google Plus One Share on Facebook PPPL senior physicist Wei-li Lee (Photo by Elle Starkman) PPPL senior physicist Wei-li Lee Physicists from around the world gathered at the University of California, Irvine this past summer for a symposium in honor of Wei-li Lee, a senior physicist at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL).

  5. NREL Technologies Honored at R&D 100 Awards Ceremony - News Releases | NREL

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

    Technologies Honored at R&D 100 Awards Ceremony November 4, 2016 The Energy Department's National Renewable Energy Laboratory (NREL) last night received three R&D 100 Awards, an honor presented by R&D Magazine and considered to be the Oscars of innovation. The prize in the Mechanical/Materials category was awarded to the EcoSnap-AC Heat Pump System created by Chuck Booten and Jon Winkler from NREL's Advanced Residential Buildings research group. The award in the Analytical/Test

  6. CENIC Honors ESnet's 100G SDN Testbed with 2015 Innovations in Networking

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

    Award CENIC Honors ESnet's 100G Testbed with 2015 Innovations in Networking Award News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 or Media@es.net Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net

  7. CNS, Y-12 honored as DOE Mentor of the Year | Y-12 National Security

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

    Complex Y-12 honored as DOE ... CNS, Y-12 honored as DOE Mentor of the Year Posted: August 6, 2015 - 3:59pm From left: CNS Supply Chain Management Director Skip Skelton, Y-12 Small Business Program Manager Lisa Copeland, Y-12 mentor Sam Easterling and CNS Senior Supply Chain Manager Mike Vermeulen Consolidated Nuclear Security LLC and Y-12 recently received the Department of Energy's Small Business Mentor of the Year award. Small Business Program Manager Lisa Copeland said, "It makes me

  8. ESnet's OSCARS Selected for Honorable Mention by U.C. 2011 Larry L.

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

    Sautter Award ESnet's OSCARS Selected for Honorable Mention by U.C. 2011 Larry L. Sautter Award News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 or Media@es.net Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback:

  9. Single to quadruple quantum dots with tunable tunnel couplings

    SciTech Connect

    Takakura, T.; Noiri, A.; Obata, T.; Yoneda, J.; Yoshida, K.; Otsuka, T.; Tarucha, S.

    2014-03-17

    We prepare a gate-defined quadruple quantum dot to study the gate-tunability of single to quadruple quantum dots with finite inter-dot tunnel couplings. The measured charging energies of various double dots suggest that the dot size is governed by the gate geometry. For the triple and quadruple dots, we study the gate-tunable inter-dot tunnel couplings. For the triple dot, we find that the effective tunnel coupling between side dots significantly depends on the alignment of the center dot potential. These results imply that the present quadruple dot has a gate performance relevant for implementing spin-based four-qubits with controllable exchange couplings.

  10. International Conference to be Held in Honor of LSU Professor (Louisiana

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

    State University Media Center) | Jefferson Lab International Conference to be Held in Honor of LSU Professor (Louisiana State University Media Center) External Link: http://www.lsu.edu/ur/ocur/lsunews/MediaCenter/News/2012/06/item48547.html By jlab_admin on Mon, 2012-06-0

  11. Oak Ridge employees honored with Department of Energy’s Secretary’s Appreciation Award

    Energy.gov [DOE]

    Eight employees from DOE's Oak Ridge Office were recognized at an awards ceremony for earning the Secretary’s Appreciation Award, one of the federal agency’s highest internal recognitions. The award honors employees who ‘go above and beyond the call of duty in their work endeavors.'

  12. Honors and Awards | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    Awards Transcribed Media PECASE Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 About Honors and Awards Print Text Size: A A A FeedbackShare Page PECASE

  13. Nontoxic quantum dot research improves solar cells

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

    Nontoxic quantum dot research improves solar cells Nontoxic quantum dot research improves solar cells Solar cells made with low-cost, nontoxic copper-based quantum dots can achieve unprecedented longevity and efficiency, according to a study by LANL and Sharp Corporation. December 10, 2013 Hunter McDaniel, Los Alamos National Laboratory postdoctoral researcher, works in the laboratory developing next-generation quantum dots that could revolutionize photovoltaic technology. Hunter McDaniel, Los

  14. Nonradiative Recombination Pathways in Noncarcinogenic Quantum Dot

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

    Composites | Department of Energy Nonradiative Recombination Pathways in Noncarcinogenic Quantum Dot Composites Nonradiative Recombination Pathways in Noncarcinogenic Quantum Dot Composites Lead Performer: UbiQD, LLC - Los Alamos, NM DOE Total Funding: $150,000 Project Term: February 22, 2016 - November 21, 2016 Funding Type: SBIR PROJECT OBJECTIVE Quantum dots composed of I-III-VI materials such as CuInS2 offer a compelling alternative to typical semiconductor quantum-dot systems, because

  15. What the Blank Makes Quantum Dots Blink?

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

    What the Blank Makes Quantum Dots Blink? What the Blank Makes Quantum Dots Blink? Calculations confirm that surface flaws are behind fluorescence intermittency in silicon nanocrystals June 15, 2015 Contact: Margie Wylie, mwylie@lbl.gov, +1 510 486 7421 Quantum dots are semiconductors just a few nanometers in diameter that can glow Quantum dots (shown here dissolved in liquid under ultraviolet light) offer tantalizing prospects for new technologies if scientists can stop them blinking. (Photo by

  16. Modeling of the quantum dot filling and the dark current of quantum dot infrared photodetectors

    SciTech Connect

    Ameen, Tarek A.; El-Batawy, Yasser M.; Abouelsaood, A. A.

    2014-02-14

    A generalized drift-diffusion model for the calculation of both the quantum dot filling profile and the dark current of quantum dot infrared photodetectors is proposed. The confined electrons inside the quantum dots produce a space-charge potential barrier between the two contacts, which controls the quantum dot filling and limits the dark current in the device. The results of the model reasonably agree with a published experimental work. It is found that increasing either the doping level or the temperature results in an exponential increase of the dark current. The quantum dot filling turns out to be nonuniform, with a dot near the contacts containing more electrons than one in the middle of the device where the dot occupation approximately equals the number of doping atoms per dot, which means that quantum dots away from contacts will be nearly unoccupied if the active region is undoped.

  17. EPA and DOE Honor 2016 Energy Star Partners of the Year for Outstanding Achievements in Energy Efficiency

    Office of Energy Efficiency and Renewable Energy (EERE)

    U.S. Environmental Protection Agency and the Energy Department honoring 149 businesses and organizations in 35 states for their commitment to saving energy and protecting the environment through superior energy efficiency achievements.

  18. Fossil Energy Acting Assistant Secretary Recognized at Black...

    Energy Saver

    Addthis Director Dot Harris presents Chris Smith, Principal Deputy Assistant Secretary and ... Photo Credit: Nancy Jo Brown106FOTO Director Dot Harris presents Chris Smith, Principal ...

  19. NREL Fellow Honored for 'Chemistry in the Public Interest' - News Releases

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

    | NREL Fellow Honored for 'Chemistry in the Public Interest' Groundbreaking solar research garners award from American Chemical Society March 29, 2011 Dr. Arthur J. Nozik, senior research fellow at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), will be awarded the Gustavus John Esselen Award for Chemistry in the Public Interest, from the American Chemical Society's Northeastern Section at Harvard University on April 14. The Gustavus John Esselen Award for

  20. NREL Solar Researcher Honored with World PV Award - News Releases | NREL

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

    NREL Solar Researcher Honored with World PV Award May 10, 2006 Golden, Colo. - Dr. Lawrence Kazmerski, a leading research director at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), received the World PV Award at the Fourth World Conference on Photovoltaic Energy Conversion on May 9 for his outstanding contributions to the worldwide advancements of photovoltaic (PV) science and technology. The award, sponsored by professional organizations from the European,

  1. NREL's DeBlasio honored by American National Standards Institute - News

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

    Releases | NREL NREL's DeBlasio honored by American National Standards Institute Engineer led effort to standardize how distributed energy integrates with the electric grid September 15, 2011 Dick DeBlasio, a research engineer with the U.S. Department of Energy's National Renewable Energy Laboratory, has been named the 2011 winner of the Finegan Standards Medal by the American National Standards Institute (ANSI). The award is given once a year by ANSI for extraordinary leadership in the

  2. The Honorable Carl Levin United States Senator 15100 North Line Road

    Office of Legacy Management (LM)

    November 30, 1993 The Honorable Carl Levin United States Senator 15100 North Line Road Room 107A Southgate, Michigan 48195 Dear Senator Levin: Secretary O'Leary asked that we respond to your October 20, 1993, letter regarding our work at a General Motors facility In southeastern Michigan. Located at 1450 Beecher Street in Adrian, the facility was operated by companies that worked under contract for the former Atomic Energy Commission to perform extrusion work on thorium and depleted, natural,

  3. Denise Peoples honored for 30 years of service | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Denise Peoples honored for 30 years of service Tuesday, August 16, 2016 - 9:14am Denise Peoples has committed 30 years of her life to public service at ‪NNSA‬ and the Department of Energy. Here she is joined by Principal Deputy Administrator Madelyn Creedon, left, and Administrator Gen. Frank Klotz (Ret.) Related Topics award District of Columbia people Related News Team members receive DOE Secretary Awards for nuclear security efforts Employees recognized for

  4. PPPL's science lecture debuts Jan. 10 with new name honoring long-time

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

    organizer | Princeton Plasma Physics Lab PPPL's science lecture debuts Jan. 10 with new name honoring long-time organizer By Jeanne Jackson DeVoe December 22, 2014 Tweet Widget Google Plus One Share on Facebook The late Ron Hatcher hosted PPPL's Science on Saturday lectures. (Photo by Photo by Elle Starkman/ PPPL Office of Communications) The late Ron Hatcher hosted PPPL's Science on Saturday lectures. The U.S. Department of Energy's Princeton Plasma Laboratory's popular Science on Saturday

  5. US Department of Energy High School Student Supercomputing Honors Program: A follow-up assessment

    SciTech Connect

    Not Available

    1987-01-01

    The US DOE High School Student Supercomputing Honors Program was designed to recognize high school students with superior skills in mathematics and computer science and to provide them with formal training and experience with advanced computer equipment. This document reports on the participants who attended the first such program, which was held at the National Magnetic Fusion Energy Computer Center at the Lawrence Livermore National Laboratory (LLNL) during August 1985.

  6. PPPL inventors honored for device that creates medical isotope vital for

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

    diagnosing diseases | Princeton Plasma Physics Lab inventors honored for device that creates medical isotope vital for diagnosing diseases By Jeanne Jackson DeVoe October 26, 2016 Tweet Widget Google Plus One Share on Facebook PPPL inventors, from left, George Ascione, Charles Gentile, and Adam Cohen in Thomas Edison's library with the Edison Award from the Research & Development Council of New Jersey. (Photo by the R&D Council of New Jersey) PPPL inventors, from left, George

  7. Pantex Plant's Calvin Nelson honored as Analyst of the Year for

    National Nuclear Security Administration (NNSA)

    Transportation Security | National Nuclear Security Administration | (NNSA) Plant's Calvin Nelson honored as Analyst of the Year for Transportation Security Monday, January 25, 2016 - 12:00am Calvin Nelson Pantex's Calvin Nelson was recently awarded the 2015 Analyst of the Year for Transportation Security by the Department of Energy's Nuclear Materials Information Program. The award, for which Nelson is the first-ever Pantex recipient, recognizes outstanding analytic support to the NMIP. All

  8. Quantitative multiplexed quantum dot immunohistochemistry

    SciTech Connect

    Sweeney, E.; Ward, T.H.; Gray, N.; Womack, C.; Jayson, G.; Hughes, A.; Dive, C.; Byers, R.

    2008-09-19

    Quantum dots are photostable fluorescent semiconductor nanocrystals possessing wide excitation and bright narrow, symmetrical, emission spectra. These characteristics have engendered considerable interest in their application in multiplex immunohistochemistry for biomarker quantification and co-localisation in clinical samples. Robust quantitation allows biomarker validation, and there is growing need for multiplex staining due to limited quantity of clinical samples. Most reported multiplexed quantum dot staining used sequential methods that are laborious and impractical in a high-throughput setting. Problems associated with sequential multiplex staining have been investigated and a method developed using QDs conjugated to biotinylated primary antibodies, enabling simultaneous multiplex staining with three antibodies. CD34, Cytokeratin 18 and cleaved Caspase 3 were triplexed in tonsillar tissue using an 8 h protocol, each localised to separate cellular compartments. This demonstrates utility of the method for biomarker measurement enabling rapid measurement of multiple co-localised biomarkers on single paraffin tissue sections, of importance for clinical trial studies.

  9. Quantum Dot Light Emitting Diode

    SciTech Connect

    Keith Kahen

    2008-07-31

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

  10. Quantum Dot Light Emitting Diode

    SciTech Connect

    Kahen, Keith

    2008-07-31

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

  11. Investigation of Quantum Dot?Quantum Dot Coupling at High Hydrostatic

    Office of Scientific and Technical Information (OSTI)

    Pressure. (Conference) | SciTech Connect Investigation of Quantum Dot?Quantum Dot Coupling at High Hydrostatic Pressure. Citation Details In-Document Search Title: Investigation of Quantum Dot?Quantum Dot Coupling at High Hydrostatic Pressure. Abstract not provided. Authors: Brener, Igal ; Liu, Sheng ; Fan, Hongyou ; Luk, Ting S. ; Li, Binsong ; Prasankumar, Rohit ; Sinclair, Michael B. Publication Date: 2014-09-01 OSTI Identifier: 1241660 Report Number(s): SAND2014-17977C 537696 DOE

  12. Research Challenge 2: Quantum Dots and Phosphors

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

    2: Quantum Dots and Phosphors - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary ...

  13. Charge state hysteresis in semiconductor quantum dots

    SciTech Connect

    Yang, C. H.; Rossi, A. Lai, N. S.; Leon, R.; Lim, W. H.; Dzurak, A. S.

    2014-11-03

    Semiconductor quantum dots provide a two-dimensional analogy for real atoms and show promise for the implementation of scalable quantum computers. Here, we investigate the charge configurations in a silicon metal-oxide-semiconductor double quantum dot tunnel coupled to a single reservoir of electrons. By operating the system in the few-electron regime, the stability diagram shows hysteretic tunnelling events that depend on the history of the dots charge occupancy. We present a model which accounts for the observed hysteretic behaviour by extending the established description for transport in double dots coupled to two reservoirs. We demonstrate that this type of device operates like a single-electron memory latch.

  14. Controlling thermal conductance through quantum dot roughening...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Controlling thermal conductance through quantum dot roughening at interfaces. Citation Details ... Publication Date: 2011-01-01 OSTI Identifier: 1110382 Report ...

  15. Semiconductor nanocrystal quantum dot synthesis approaches towards...

    Office of Scientific and Technical Information (OSTI)

    In addition, applications that demand to utilize quantum dots as "commodity" chemicals are discussed, including solar cells and solid-state lightings. Authors: Hu, Michael Z. 1 ; ...

  16. Contact Us | Department of Energy

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

    Contact Us Contact Us Office of Economic Impact & Diversity 1000 Independence Ave., SW Washington, DC 20585 Phone: (202) 586-8383 Fax: (202) 586-3075 Office of the Director Director, The Honorable LaDoris 'Dot' Harris Principal Deputy Director, Andre H. Sayles, Ph.D. Office of Minority Education and Community Development Deputy Director, Annie Whatle Annie.Whatley@hq.doe.gov Office of Minority Business and Economic Development Deputy Director, Karen Atkinson Karen.Atkinson@hq.doe.gov Office

  17. Promising future of quantum dots explored in conference

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

    Promising future of quantum dots explored Promising future of quantum dots explored in conference Researchers are gathering to reflect on two decades of quantum dot research at a special topical conference, "20 Years of Quantum Dots at Los Alamos" April 13, 2015 Quantum dot LSC devices under ultraviolet illumination. Quantum dot LSC devices under ultraviolet illumination. Contact Los Alamos National Laboratory Nancy Ambrosiano Communications Office (505) 667-0471 Email "This

  18. Energy Department Assistant Secretary Danielson Honors Stevens Institute of Technology as Winner of U.S. Department of Energy Solar Decathlon

    Energy.gov [DOE]

    Stevens Institute of Technology wins top honors overall by designing, building, and operating the most cost-effective, energy-efficient and attractive solar powered house.

  19. Generation of even harmonics in coupled quantum dots (Journal...

    Office of Scientific and Technical Information (OSTI)

    Generation of even harmonics in coupled quantum dots Citation Details In-Document Search Title: Generation of even harmonics in coupled quantum dots Using the spatial-temporal...

  20. DOE Science Showcase - Quantum Dots | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    For additional information, see the OSTI Catalogue of Collections. RefreshLine.png Additional Resources Quantum dot, Wikipedia Quantum dot solar cell, Wikipedia Los Alamos Quantum ...

  1. Quantum Dots Promise to Significantly Boost Solar Cell Efficiencies...

    Office of Scientific and Technical Information (OSTI)

    Quantum Dots Promise to Significantly Boost Solar Cell Efficiencies (Fact Sheet) Citation Details In-Document Search Title: Quantum Dots Promise to Significantly Boost Solar Cell ...

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

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

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

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

    SciTech Connect

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

    2008-10-06

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

  4. Thick-shell nanocrystal quantum dots

    SciTech Connect

    Hollingsworth, Jennifer A.; Chen, Yongfen; Klimov, Victor I.; Htoon, Han; Vela, Javier

    2011-05-03

    Colloidal nanocrystal quantum dots comprising an inner core having an average diameter of at least 1.5 nm and an outer shell, where said outer shell comprises multiple monolayers, wherein at least 30% of the quantum dots have an on-time fraction of 0.80 or greater under continuous excitation conditions for a period of time of at least 10 minutes.

  5. Photoluminescence of a quantum-dot molecule

    SciTech Connect

    Kruchinin, Stanislav Yu.; Rukhlenko, Ivan D.; Baimuratov, Anvar S.; Leonov, Mikhail Yu.; Turkov, Vadim K.; Baranov, Alexander V.; Fedorov, Anatoly V.; Gun'ko, Yurii K.

    2015-01-07

    The coherent coupling of quantum dots is a sensitive indicator of the energy and phase relaxation processes taking place in the nanostructure components. We formulate a theory of low-temperature, stationary photoluminescence from a quantum-dot molecule composed of two spherical quantum dots whose electronic subsystems are resonantly coupled via the Coulomb interaction. We show that the coupling leads to the hybridization of the first excited states of the quantum dots, manifesting itself as a pair of photoluminescence peaks with intensities and spectral positions strongly dependent on the geometric, material, and relaxation parameters of the quantum-dot molecule. These parameters are explicitly contained in the analytical expression for the photoluminescence differential cross section derived in the paper. The developed theory and expression obtained are essential in interpreting and analyzing spectroscopic data on the secondary emission of coherently coupled quantum systems.

  6. Theory Of Alkyl Terminated Silicon Quantum Dots

    SciTech Connect

    Reboredo, F; Galli, G

    2004-08-19

    We have carried out a series of ab-initio calculations to investigate changes in the optical properties of Si quantum dots as a function of surface passivation. In particular, we have compared hydrogen passivated dots with those having alkyl groups at the surface. We find that, while on clusters with reconstructed surfaces a complete alkyl passivation is possible, steric repulsion prevents full passivation of Si dots with unreconstructed surfaces. In addition, our calculations show that steric repulsion may have a dominant effect in determining the surface structure, and eventually the stability of alkyl passivated clusters, with results dependent on the length of the carbon chain. Alkyl passivation weakly affects optical gaps of silicon quantum dots, while it substantially decreases ionization potentials and electron affinities and affect their excited state properties. On the basis of our results we propose that alkyl terminated quantum dots may be size selected taking advantage of the change in ionization potential as a function of the cluster size.

  7. High-impact innovations honored as R&D 100 Award finalists

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

    Eight LANL technologies named 2016 R&D 100 Award finalists High-impact innovations honored as R&D 100 Award finalists Eight Los Alamos National Laboratory innovations were selected as finalists for the 2016 R&D 100 Awards. August 24, 2016 Pulak Nath Pulak Nath of Applied Modern Physics holds the Pulmonary Lung Model (PulMo). Contact Nick Njegomir Los Alamos National Laboratory (505)-665-9394 The Laboratory's R&D 100 Award finalists represent the breadth of scientific innovations

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

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

    Lee Honored for Work in Plasma Simulations By Patti Wieser September 13, 2011 Tweet Widget Google Plus One Share on Facebook Wei-li Lee (Photo by Elle Starkman/ PPPL Office of Communications) Wei-li Lee Wei-li Lee, a Principal Research Physicist in the Theory Department at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL), has received the 2011 John Dawson Prize for Numerical Simulation of Plasmas. The prize recognizes Lee for his seminal contributions to computational

  9. Veterans find closure on CNS-sponsored HonorAir trip | Y-12 National

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

    Security Complex Veterans find closure on ... Veterans find closure on CNS-sponsored HonorAir trip Posted: September 19, 2016 - 4:08pm Vietnam veteran Ralph Adcox (far right) is happy to see his fellow veterans get a chance to have closure. It was a good night when 73 year old Daniel Campbell finally got a solid night's rest. For years, his sleep was interrupted by images nearly half a century old - images of death and horror in Vietnam. "I lost my best friend in Vietnam," Campbell

  10. High School Girls Honored for Math, Science Achievements at Sandia National Laboratory

    Energy.gov [DOE]

    Now in its 23rd year, the Math and Science Awards program is sponsored by the Sandia Women’s Connection. This year’s event honored more students, with the addition of four high schools in Oakland, Calif., and included recognition of the students by federal and state officials. Teachers from 15 high schools in Livermore, Dublin, Pleasanton, Tracy, Manteca and Oakland nominated high school juniors whom they deemed outstanding in math and science, so the students can include the award on college and scholarship applications.

  11. Paul Mutolo talks about Honorable Transportation - TEDxChemungRiver > EMC2

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

    News > The Energy Materials Center at Cornell Paul Mutolo talks about Honorable Transportation - TEDxChemungRiver January 4th, 2016 › Dr. Paul Mutolo spoke at TEDxChemungRiver 2015 in Corning, New York back in November. To view the video, go to https://www.youtube.com/watch?v=xdq5H23qcY0. While Paul is a scientist and an entrepreneur, he is, at his heart, an environmentalist who believes advancements in alternative energy haven't come far enough. He is ever mindful of how the creation

  12. Y-12 honors past plant manager and building's namesake, Jack Case | Y-12

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

    National Security Complex past plant ... Y-12 honors past plant manager and building's namesake, Jack Case Posted: December 30, 2014 - 12:51pm Jack Case's granddaughter Michelle Hurst points out to her mother Linda Fellers and uncle Patrick Case that the artist who created the bust of her grandfather "pretty well nailed it on the likeness." The family loaned a number of Case's personal articles, including the bust given to him as a birthday present by a friend's wife who was a

  13. DOT Awards University Transportation Centers $63 Million

    Energy.gov [DOE]

    The U.S. Department of Transportation's (DOT) announced approximately $63 million in grants to 33 University Transportation Centers to advance research and education programs that address critical transportation challenges.

  14. Semiconductor Nanocrystal Quantum Dot Synthesis Approaches Towards...

    Office of Scientific and Technical Information (OSTI)

    Large-Scale Industrial Production for Energy Applications CrossMark Michael Z. Hu* and ... The large quantity demands of high-quality quantum dots for advanced energy applications ...

  15. Nontoxic quantum dot research improves solar cells

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

    Nancy Ambrosiano Communications Office (505) 667-0471 Email "For the first time, we have certified the performance of a quantum dot sensitized solar cell at greater than 5 percent, ...

  16. Electron Spin Dynamics in Semiconductor Quantum Dots

    SciTech Connect

    Marie, X.; Belhadj, T.; Urbaszek, B.; Amand, T.; Krebs, O.; Lemaitre, A.; Voisin, P.

    2011-07-15

    An electron spin confined to a semiconductor quantum dot is not subject to the classical spin relaxation mechanisms known for free carriers but it strongly interacts with the nuclear spin system via the hyperfine interaction. We show in time resolved photoluminescence spectroscopy experiments on ensembles of self assembled InAs quantum dots in GaAs that this interaction leads to strong electron spin dephasing.

  17. First principle thousand atom quantum dot calculations

    SciTech Connect

    Wang, Lin-Wang; Li, Jingbo

    2004-03-30

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

  18. EPA and DOE Honor 2015 Energy Star Partners of the Year for Leadership on Energy Efficiency, Acting on Climate

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy (DOE) are honoring 128 businesses and organizations in 33 states with the Energy Star’s Partner of the Year award for their commitment to saving energy and protecting the environment through superior energy efficiency achievements.

  19. TechLine: NETL Scientists Honored by ASM International for Work on Platinum Chromium Alloy for Coronary Stents

    Energy.gov [DOE]

    Scientists at the National Energy Technology Laboratory (NETL), and their colleagues, were honored with a 2015 ASM Engineering Materials Achievement Award for their work to develop and commercialize of a platinum-chromium alloy used in next-generation coronary stents,

  20. (In,Mn)As multilayer quantum dot structures

    SciTech Connect

    Bouravleuv, Alexei; Sapega, Victor; Nevedomskii, Vladimir; Khrebtov, Artem; Samsonenko, Yuriy; Cirlin, George

    2014-12-08

    (In,Mn)As multilayer quantum dots structures were grown by molecular beam epitaxy using a Mn selective doping of the central parts of quantum dots. The study of the structural and magneto-optical properties of the samples with three and five layers of (In,Mn)As quantum dots has shown that during the quantum dots assembly, the out-diffusion of Mn from the layers with (In,Mn)As quantum dots can occur resulting in the formation of the extended defects. To produce a high quality structures using the elaborated technique of selective doping, the number of (In,Mn)As quantum dot layers should not exceed three.

  1. OSTIblog Articles in the quantum dots Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information dots

  2. Next-Generation "Giant" Quantum Dots: Performance-Engineered...

    Energy.gov [DOE] (indexed site)

    This project seeks to develop quantum-dot downconverters to be used in LED lighting. The focus will be on synthesizing red-emitting quantum dots, revealing their failure ...

  3. Surface treatment of nanocrystal quantum dots after film deposition

    DOEpatents

    Sykora, Milan; Koposov, Alexey; Fuke, Nobuhiro

    2015-02-03

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

  4. Preface of the “Symposium on methods in quantum chemistry”: A symposium in honor of Jiří Čížek and Josef Paldus

    SciTech Connect

    Thakkar, Ajit J.

    2015-01-22

    An overview of the symposium on “Methods in Quantum Chemistry” held to honor the life and work of Jiří Čížek and Josef Paldus is presented.

  5. EPA and DOE Honor 2015 Energy Star Partners of the Year, Recognizing Leadership and Action in Energy Efficiency, Featuring Better Buildings Challenge

    Energy.gov [DOE]

    128 businesses and organizations in 33 states across the nation, are being honored by the U.S. Environmental Protection Agency and the U.S. Department of Energy with the Energy Stars Partner of...

  6. Surface treatment of nanocrystal quantum dots after film deposition

    Office of Scientific and Technical Information (OSTI)

    (Patent) | SciTech Connect Patent: Surface treatment of nanocrystal quantum dots after film deposition Citation Details In-Document Search Title: Surface treatment of nanocrystal quantum dots after film deposition Provided are methods of surface treatment of nanocrystal quantum dots after film deposition so as to exchange the native ligands of the quantum dots for exchange ligands that result in improvement in charge extraction from the nanocrystals. Authors: Sykora, Milan ; Koposov, Alexey

  7. Quantum Dot-Based Cell Motility Assay

    SciTech Connect

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

    2005-06-06

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

  8. Exciton binding energy in semiconductor quantum dots

    SciTech Connect

    Pokutnii, S. I.

    2010-04-15

    In the adiabatic approximation in the context of the modified effective mass approach, in which the reduced exciton effective mass {mu} = {mu}(a) is a function of the radius a of the semiconductor quantum dot, an expression for the exciton binding energy E{sub ex}(a) in the quantum dot is derived. It is found that, in the CdSe and CdS quantum dots with the radii a comparable to the Bohr exciton radii a{sub ex}, the exciton binding energy E{sub ex}(a) is substantially (respectively, 7.4 and 4.5 times) higher than the exciton binding energy in the CdSe and CdS single crystals.

  9. Ambipolar quantum dots in intrinsic silicon

    SciTech Connect

    Betz, A. C. Gonzalez-Zalba, M. F.; Podd, G.; Ferguson, A. J.

    2014-10-13

    We electrically measure intrinsic silicon quantum dots with electrostatically defined tunnel barriers. The presence of both p- and n-type ohmic contacts enables the accumulation of either electrons or holes. Thus, we are able to study both transport regimes within the same device. We investigate the effect of the tunnel barriers and the electrostatically defined quantum dots. There is greater localisation of charge states under the tunnel barriers in the case of hole conduction, leading to higher charge noise in the p-type regime.

  10. Bilayer graphene quantum dot defined by topgates

    SciTech Connect

    Müller, André; Kaestner, Bernd; Hohls, Frank; Weimann, Thomas; Pierz, Klaus; Schumacher, Hans W.

    2014-06-21

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

  11. Kondo and mixed-valence regimes in multilevel quantum dots

    SciTech Connect

    Chudnovskiy, A. L.; Ulloa, S. E.

    2001-04-15

    We investigate the dependence of the ground state of a multilevel quantum dot on the coupling to an external fermionic system and on the interactions in the dot. As the coupling to the external system increases, the rearrangement of the effective energy levels in the dot signals the transition from the Kondo regime to a mixed-valence (MV) regime. The MV regime in a two-level dot is characterized by an intrinsic mixing of the levels in the dot, resulting in nonperturbative subtunneling and supertunneling phenomena that strongly influence the Kondo effect.

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

    SciTech Connect

    Singh, Neetu Kapoor, Avinashi; Kumar, Vinod; Mehra, R. M.

    2014-04-24

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

  13. Inter-dot strain field effect on the optoelectronic properties of realistic InP lateral quantum-dot molecules

    SciTech Connect

    Barettin, Daniele Auf der Maur, Matthias; De Angelis, Roberta; Prosposito, Paolo; Casalboni, Mauro; Pecchia, Alessandro

    2015-03-07

    We report on numerical simulations of InP surface lateral quantum-dot molecules on In{sub 0.48}Ga{sub 0.52 }P buffer, using a model strictly derived by experimental results by extrapolation of the molecules shape from atomic force microscopy images. Our study has been inspired by the comparison of a photoluminescence spectrum of a high-density InP surface quantum dot sample with a numerical ensemble average given by a weighted sum of simulated single quantum-dot spectra. A lack of experimental optical response from the smaller dots of the sample is found to be due to strong inter-dot strain fields, which influence the optoelectronic properties of lateral quantum-dot molecules. Continuum electromechanical, k{sup →}·p{sup →} bandstructure, and optical calculations are presented for two different molecules, the first composed of two dots of nearly identical dimensions (homonuclear), the second of two dots with rather different sizes (heteronuclear). We show that in the homonuclear molecule the hydrostatic strain raises a potential barrier for the electrons in the connection zone between the dots, while conversely the holes do not experience any barrier, which considerably increases the coupling. Results for the heteronuclear molecule show instead that its dots do not appear as two separate and distinguishable structures, but as a single large dot, and no optical emission is observed in the range of higher energies where the smaller dot is supposed to emit. We believe that in samples of such a high density the smaller dots result as practically incorporated into bigger molecular structures, an effect strongly enforced by the inter-dot strain fields, and consequently it is not possible to experimentally obtain a separate optical emission from the smaller dots.

  14. Annealing-induced change in quantum dot chain formation mechanism

    SciTech Connect

    Park, Tyler D.; Colton, John S.; Farrer, Jeffrey K.; Yang, Haeyeon; Kim, Dong Jun

    2014-12-15

    Self-assembled InGaAs quantum dot chains were grown using a modified Stranski-Krastanov method in which the InGaAs layer is deposited under a low growth temperature and high arsenic overpressure, which suppresses the formation of dots until a later annealing process. The dots are capped with a 100 nm GaAs layer. Three samples, having three different annealing temperatures of 460°C, 480°C, and 500°C, were studied by transmission electron microscopy. Results indicate two distinct types of dot formation processes: dots in the 460°C and 480°C samples form from platelet precursors in a one-to-one ratio whereas the dots in the sample annealed at 500°C form through the strain-driven self-assembly process, and then grow larger via an additional Ostwald ripening process whereby dots grow into larger dots at the expense of smaller seed islands. There are consequently significant morphological differences between the two types of dots, which explain many of the previously-reported differences in optical properties. Moreover, we also report evidence of indium segregation within the dots, with little or no indium intermixing between the dots and the surrounding GaAs barrier.

  15. 3D electrostatic gyrokinetic electron and fully kinetic ion simulation of lower-hybrid drift instability of Harris current sheet

    DOE PAGES [OSTI]

    Wang, Zhenyu; Lin, Yu; Wang, Xueyi; Tummel, Kurt; Chen, Liu

    2016-07-07

    The eigenmode stability properties of three-dimensional lower-hybrid-drift-instabilities (LHDI) in a Harris current sheet with a small but finite guide magnetic field have been systematically studied by employing the gyrokinetic electron and fully kinetic ion (GeFi) particle-in-cell (PIC) simulation model with a realistic ion-to-electron mass ratio mi/me. In contrast to the fully kinetic PIC simulation scheme, the fast electron cyclotron motion and plasma oscillations are systematically removed in the GeFi model, and hence one can employ the realistic mi/me. The GeFi simulations are benchmarked against and show excellent agreement with both the fully kinetic PIC simulation and the analytical eigenmode theory.more » Our studies indicate that, for small wavenumbers, ky, along the current direction, the most unstable eigenmodes are peaked at the location where k⃗• B⃗ =0, consistent with previous analytical and simulation studies. Here, B⃗ is the equilibrium magnetic field and k⃗ is the wavevector perpendicular to the nonuniformity direction. As ky increases, however, the most unstable eigenmodes are found to be peaked at k⃗ •B⃗ ≠0. Additionally, the simulation results indicate that varying mi/me, the current sheet width, and the guide magnetic field can affect the stability of LHDI. Simulations with the varying mass ratio confirm the lower hybrid frequency and wave number scalings.« less

  16. Geometric spin manipulation in semiconductor quantum dots

    SciTech Connect

    Prabhakar, Sanjay Melnik, Roderick; Inomata, Akira

    2014-04-07

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

  17. Controlling quantum dot energies using submonolayer bandstructure engineering

    SciTech Connect

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

    2014-08-25

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

  18. The design and synthesis of heterostructured quantum dots with dual

    Office of Scientific and Technical Information (OSTI)

    emission in the visible and infrared (Journal Article) | SciTech Connect The design and synthesis of heterostructured quantum dots with dual emission in the visible and infrared Citation Details In-Document Search Title: The design and synthesis of heterostructured quantum dots with dual emission in the visible and infrared The unique optical properties exhibited by visible emitting core/shell quantum dots with especially thick shells are the focus of widespread study, but have yet to be

  19. Nanoscale engineering boosts performance of quantum dot light emitting

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

    diodes Quantum dot light emitting diodes Nanoscale engineering boosts performance of quantum dot light emitting diodes Quantum dots are nano-sized semiconductor particles whose emission color can be tuned by simply changing their dimensions. October 25, 2013 Postdoctoral researcher Young-Shin Park characterizing emission spectra of LEDs in the Los Alamos National Laboratory optical laboratory. Postdoctoral researcher Young-Shin Park characterizing emission spectra of LEDs in the Los Alamos

  20. Polarized quantum dot emission in electrohydrodynamic jet printed photonic crystals

    SciTech Connect

    See, Gloria G.; Xu, Lu; Nuzzo, Ralph G.; Sutanto, Erick; Alleyne, Andrew G.; Cunningham, Brian T.

    2015-08-03

    Tailored optical output, such as color purity and efficient optical intensity, are critical considerations for displays, particularly in mobile applications. To this end, we demonstrate a replica molded photonic crystal structure with embedded quantum dots. Electrohydrodynamic jet printing is used to control the position of the quantum dots within the device structure. This results in significantly less waste of the quantum dot material than application through drop-casting or spin coating. In addition, the targeted placement of the quantum dots minimizes any emission outside of the resonant enhancement field, which enables an 8× output enhancement and highly polarized emission from the photonic crystal structure.

  1. Ratiometric Sensing of Toxins using Quantum Dots | Argonne National...

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

    Ratiometric Sensing of Toxins using Quantum Dots December 4, 2015 Tweet EmailPrint Botulinum neurotoxin (BoNT) presents a significant hazard under numerous realistic scenarios. ...

  2. Unraveling the mystery of quantum-dot blinking

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

    Tiny particles with finely tunable electronic and optical properties Quantum dots are particles between 1 and 10 nanometers in diameter. A nanometer is only one billionth of a ...

  3. Exploring Competing Kinetic Processes in Quantum Dots Linked...

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

    Competing Kinetic Processes in Quantum Dots Linked to Electrode Surfaces March 14, 2012 at 2:30pm4-349 Mark Hybertsen Brookhaven National Laboratory, Columbia University ...

  4. Quantum Dot Tracers for Use in Engineered Geothermal

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

    this project is to develop and demonstrate a new class of tracers, colloidal quantum dots, that offer great promise for use in characterizing fracture networks in EGS reservoirs. ...

  5. New Pathway Developed to Silicon Quantum Dot Devices (Fact Sheet...

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

    for preparing doped colloids (solutions) of silicon nanocrystals (NCs) as potential nontoxic infrared-absorbing and -emitting alternatives to metal chalcogenide quantum dots. ...

  6. Quantum Dot Materials Can Reduce Heat, Boost Electrical Output...

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

    Quantum Dot Materials Can Reduce Heat, Boost Electrical Output May 23, 2005 Golden, Colo. - Researchers at the U.S. Department of Energy's National Renewable Energy Laboratory ...

  7. Search for: "quantum dots" | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Quantum Dots Promise to Significantly Boost Solar Cell Efficiencies (Fact Sheet) Not Available In the search for a third generation of solar-cell technologies, a leading candidate ...

  8. Spin filtering in a double quantum dot device: Numerical renormalizati...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; MATHEMATICAL MODELS; MATHEMATICAL SOLUTIONS; QUANTUM DOTS; ...

  9. Few Electron Quantum Dot coupling to Donor Implanted Electron...

    Office of Scientific and Technical Information (OSTI)

    Title: Few Electron Quantum Dot coupling to Donor Implanted Electron Spins. Abstract not provided. Authors: Rudolph, Martin ; Patrick Harvey-Collard ; Nielsen, Erik ; Gamble, John ...

  10. Diffusion-Controlled Synthesis of PbS and PbSe Quantum Dots with...

    Office of Scientific and Technical Information (OSTI)

    Dot Solar Cells Citation Details In-Document Search Title: Diffusion-Controlled Synthesis of PbS and PbSe Quantum Dots with in Situ Halide Passivation for Quantum Dot Solar Cells ...

  11. Emission switching in carbon dots coated CdTe quantum dots driving by pH dependent hetero-interactions

    SciTech Connect

    Dai, Xiao; Wang, Hao; Yi, Qinghua; Wang, Yun; Cong, Shan; Zhao, Jie; Sun, Yinghui; Zou, Guifu E-mail: jiexiong@uestc.edu.cn; Qian, Zhicheng; Huang, Jianwen; Xiong, Jie E-mail: jiexiong@uestc.edu.cn; Luo, Hongmei

    2015-11-16

    Due to the different emission mechanism between fluorescent carbon dots and semiconductor quantum dots (QDs), it is of interest to explore the potential emission in hetero-structured carbon dots/semiconducting QDs. Herein, we design carbon dots coated CdTe QDs (CDQDs) and investigate their inherent emission. We demonstrate switchable emission for the hetero-interactions of the CDQDs. Optical analyses indicate electron transfer between the carbon dots and the CdTe QDs. A heterojunction electron process is proposed as the driving mechanism based on N atom protonation of the carbon dots. This work advances our understanding of the interaction mechanism of the heterostructured CDQDs and benefits the future development of optoelectronic nanodevices with new functionalities.

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

    SciTech Connect

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

    1998-04-01

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

  13. DOT-7A packaging test procedure

    SciTech Connect

    Kelly, D.L.

    1995-01-23

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

  14. Relaxation dynamics in correlated quantum dots

    SciTech Connect

    Andergassen, S.; Schuricht, D.; Pletyukhov, M.; Schoeller, H.

    2014-12-04

    We study quantum many-body effects on the real-time evolution of the current through quantum dots. By using a non-equilibrium renormalization group approach, we provide analytic results for the relaxation dynamics into the stationary state and identify the microscopic cutoff scales that determine the transport rates. We find rich non-equilibrium physics induced by the interplay of the different energy scales. While the short-time limit is governed by universal dynamics, the long-time behavior features characteristic oscillations as well as an interplay of exponential and power-law decay.

  15. RKKY interaction in a chirally coupled double quantum dot system

    SciTech Connect

    Heine, A. W.; Tutuc, D.; Haug, R. J.; Zwicknagl, G.; Schuh, D.; Wegscheider, W.

    2013-12-04

    The competition between the Kondo effect and the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction is investigated in a double quantum dots system, coupled via a central open conducting region. A perpendicular magnetic field induces the formation of Landau Levels which in turn give rise to the so-called Kondo chessboard pattern in the transport through the quantum dots. The two quantum dots become therefore chirally coupled via the edge channels formed in the open conducting area. In regions where both quantum dots exhibit Kondo transport the presence of the RKKY exchange interaction is probed by an analysis of the temperature dependence. The thus obtained Kondo temperature of one dot shows an abrupt increase at the onset of Kondo transport in the other, independent of the magnetic field polarity, i.e. edge state chirality in the central region.

  16. Kondo effect in coupled quantum dots under magnetic fields

    SciTech Connect

    Aono, Tomosuke; Eto, Mikio

    2001-08-15

    The Kondo effect in coupled quantum dots is investigated theoretically under magnetic fields. We show that the magnetoconductance (MC) illustrates the peak structures of Kondo resonant spectra. When the dot-dot tunneling coupling V{sub C} is smaller than the dot-lead coupling {Delta} (level broadening), Kondo resonant levels appear at the Fermi level (E{sub F}). The Zeeman splitting of the levels weakens the Kondo effect, which results in a negative MC. When V{sub C} is larger than {Delta}, the Kondo resonances form bonding and antibonding levels, located below and above E{sub F}, respectively. We observe a positive MC since the Zeeman splitting increases the overlap between the levels at E{sub F}. In the presence of antiferromagnetic spin coupling between the dots, the sign of the MC can change as a function of the gate voltage.

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

    SciTech Connect

    Al-Khursan, Amin H.; Ghalib, Basim Abdullattif; Al-Obaidi, Sabri J.

    2012-02-15

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

  18. Competing interactions in semiconductor quantum dots

    DOE PAGES [OSTI]

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

    2014-10-14

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

  19. Competing interactions in semiconductor quantum dots

    SciTech Connect

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

    2014-10-14

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

  20. Dear Mr. Harris,

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

    The regulations define the basic model as any product that has a different energy use or ... I do not think the process the DOE used for Commercial Refrigeration Equipment was fair ...

  1. TO : W. B. Harris

    Office of Legacy Management (LM)

    (Includes cleanup) 3 0. 3. Test of Ignition tempera- ture of a cloud using Black Oxide and Uranium Hydride (including cleanup) j 0. L tininmm Explosive concen- tration 1 0. j. ...

  2. ostiblog_image_quantum_dots_smaller.png | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information ostiblog_image_quantum_dots_smaller.png

  3. sci_showcase_quantum_dots.png | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information sci_showcase_quantum_dots.png

  4. Coherent radiation by quantum dots and magnetic nanoclusters

    SciTech Connect

    Yukalov, V. I.; Yukalova, E. P.

    2014-03-31

    The assemblies of either quantum dots or magnetic nanoclusters are studied. It is shown that such assemblies can produce coherent radiation. A method is developed for solving the systems of nonlinear equations describing the dynamics of such assemblies. The method is shown to be general and applicable to systems of different physical nature. Despite mathematical similarities of dynamical equations, the physics of the processes for quantum dots and magnetic nanoclusters is rather different. In a quantum dot assembly, coherence develops due to the Dicke effect of dot interactions through the common radiation field. For a system of magnetic clusters, coherence in the spin motion appears due to the Purcell effect caused by the feedback action of a resonator. Self-organized coherent spin radiation cannot arise without a resonator. This principal difference is connected with the different physical nature of dipole forces between the objects. Effective dipole interactions between the radiating quantum dots, appearing due to photon exchange, collectivize the dot radiation. While the dipolar spin interactions exist from the beginning, yet before radiation, and on the contrary, they dephase spin motion, thus destroying the coherence of moving spins. In addition, quantum dot radiation exhibits turbulent photon filamentation that is absent for radiating spins.

  5. Coupling capacitance between double quantum dots tunable by the number of electrons in Si quantum dots

    SciTech Connect

    Uchida, Takafumi Arita, Masashi; Takahashi, Yasuo; Fujiwara, Akira

    2015-02-28

    Tunability of capacitive coupling in the Si double-quantum-dot system is discussed by changing the number of electrons in quantum dots (QDs), in which the QDs are fabricated using pattern-dependent oxidation (PADOX) of a Si nanowire and multi-fine-gate structure. A single QD formed by PADOX is divided into multiple QDs by additional oxidation through the gap between the fine gates. When the number of electrons occupying the QDs is large, the coupling capacitance increases gradually and almost monotonically with the number of electrons. This phenomenon is attributed to the gradual growth in the effective QD size due to the increase in the number of electrons in the QDs. On the other hand, when the number of electrons changes in the few-electron regime, the coupling capacitance irregularly changes. This irregularity can be observed even up to 40 electrons. This behavior is attributable the rough structure of Si nano-dots made by PADOX. This roughness is thought to induce complicated change in the electron wave function when an electron is added to or subtracted from a QD.

  6. Zeno-logic applications of semiconductor quantum dots

    SciTech Connect

    Schneebeli, L.; Peyghambarian, N.; Feldtmann, T.; Kira, M.; Koch, S. W.

    2010-05-15

    Microscopic calculations show that CdSe-based semiconductor quantum dots with confined exciton and biexciton states are suitable candidates for Zeno-logic applications. The frequencies of the control and signal fields are chosen to guarantee very high transmission of the individual beams. If both fields are present simultaneously, they are strongly absorbed due to efficient ground-state-to-biexciton transitions. The optical Bloch equations for a three-level quantum-dot model with self-consistent light-matter coupling are solved numerically. The influence of dephasing and/or inhomogeneous dot distributions is analyzed and the conditions for satisfactory device operation are identified.

  7. Generation of even harmonics in coupled quantum dots

    SciTech Connect

    Guo Shifang; Duan Suqing; Yang Ning; Chu Weidong; Zhang Wei

    2011-07-15

    Using the spatial-temporal symmetry principle we developed recently, we propose an effective scheme for even-harmonics generation in coupled quantum dots. The relative intensity of odd and even harmonic components in the emission spectrum can be controlled by tuning the dipole couplings among the dots, which can be realized in experiments by careful design of the nanostructures. In particular, pure 2nth harmonics and (2n+1)th harmonics (where n is an integer) can be generated simultaneously with polarizations in two mutual perpendicular directions in our systems. An experimental design of the coupled dots system is presented.

  8. Charge sensing of a few-donor double quantum dot in silicon

    SciTech Connect

    Watson, T. F. Weber, B.; Büch, H.; Fuechsle, M.; Simmons, M. Y.

    2015-12-07

    We demonstrate the charge sensing of a few-donor double quantum dot precision placed with atomic resolution scanning tunnelling microscope lithography. We show that a tunnel-coupled single electron transistor (SET) can be used to detect electron transitions on both dots as well as inter-dot transitions. We demonstrate that we can control the tunnel times of the second dot to the SET island by ∼4 orders of magnitude by detuning its energy with respect to the first dot.

  9. Quantum Dot Tracers for Use in Engineered Geothermal | Department of Energy

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

    Quantum Dot Tracers for Use in Engineered Geothermal Quantum Dot Tracers for Use in Engineered Geothermal Quantum Dot Tracers for Use in Engineered Geothermal presentation at the April 2013 peer review meeting held in Denver, Colorado. quantum_dot_tracers_peer2013.pdf (1.08 MB) More Documents & Publications Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS) Quantum Dot Tracers for Use in Engineered Geothermal Systems Use of Tracers to Characterize

  10. Electron states in semiconductor quantum dots

    SciTech Connect

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

    2014-11-28

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

  11. A triple quantum dot based nano-electromechanical memory device

    SciTech Connect

    Pozner, R.; Lifshitz, E.; Peskin, U.

    2015-09-14

    Colloidal quantum dots (CQDs) are free-standing nano-structures with chemically tunable electronic properties. This tunability offers intriguing possibilities for nano-electromechanical devices. In this work, we consider a nano-electromechanical nonvolatile memory (NVM) device incorporating a triple quantum dot (TQD) cluster. The device operation is based on a bias induced motion of a floating quantum dot (FQD) located between two bound quantum dots (BQDs). The mechanical motion is used for switching between two stable states, “ON” and “OFF” states, where ligand-mediated effective interdot forces between the BQDs and the FQD serve to hold the FQD in each stable position under zero bias. Considering realistic microscopic parameters, our quantum-classical theoretical treatment of the TQD reveals the characteristics of the NVM.

  12. Solution-Processed Solar Cells using Colloidal Quantum Dots ...

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

    Solution-Processed Solar Cells using Colloidal Quantum Dots September 27, 2012 at 3pm36-428 Ted Sargent Department of Electrical and Computer Engineering - Canada Research Chair ...

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

    DOEpatents

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

    2008-07-29

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

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

    DOEpatents

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

    2010-04-13

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

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

    SciTech Connect

    Li, Jingbo; Wang, Lin-Wang

    2004-03-30

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

  16. TxDOT Access Management Manual | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Access Management Manual Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- OtherOther: TxDOT Access Management ManualLegal Abstract Manual prepared...

  17. Synthesis of Non-blinking Semiconductor Quantum Dots Emitting...

    Office of Scientific and Technical Information (OSTI)

    Our previous work demonstrates that Quasi-Type II CdSeCdS core-shell quantum dots with ... synthesized to reduce cadmium exposure for applications in the biological environment. ...

  18. Quantum Dot Tracers for Use in Engineered Geothermal Systems

    Energy.gov [DOE]

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

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

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

    dots research collaboration leads to 10M cancer center September 24th, 2015 Provided... are designed to either adhere to and light up cancer cells or quickly leave the body. ...

  20. Pulsed Thermal Processing of Self-Assembled Quantum Dot Structures

    SciTech Connect

    2009-04-01

    This factsheet describes a study that will develop the quantum dot manufacturing system for roll-to-roll thin film processing for use in applications such as solid state lighting.

  1. Collective modes of quantum dot ensembles in microcavities

    SciTech Connect

    Averkiev, N. S.; Glazov, M. M. Poddubnyi, A. N.

    2009-05-15

    Emission spectra of quantum dot arrays in zero-dimensional microcavities are studied theoretically. It is shown that their form is determined by the competition between collective superradiant mode formation and inhomogeneous broadening. A random sources method is used to calculate the photoluminescence spectra from an nonresonant pumped microcavity, and a standard diagram technique is used to provide a microscopic justification for the random sources method. The emission spectra of a microcavity are analyzed taking into account the spread of exciton energy due to inhomogeneous distribution of quantum dots and tunneling between them. It is demonstrated that the luminescence spectra of strongly tunnel-coupled quantum dots are sensitive to the dot positions, and the collective mode can (under certain conditions) be stabilized by random tunneling links.

  2. Shiny quantum dots brighten future of solar cells

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

    Photovoltaic solar-panel windows could be next for your ... to recent quantum-dot work by Los Alamos National ... and guided towards the slab edge equipped with a solar cell. ...

  3. NREL and Partners Demonstrate Quantum Dots that Assemble Themselves - News

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

    Releases | NREL and Partners Demonstrate Quantum Dots that Assemble Themselves Surprising breakthrough could bolster quantum photonics, solar cell efficiency February 8, 2013 Scientists from the U.S. Department of Energy's National Renewable Energy Laboratory and other labs have demonstrated a process whereby quantum dots can self-assemble at optimal locations in nanowires, a breakthrough that could improve solar cells, quantum computing, and lighting devices. A paper on the new technology,

  4. NREL: Transportation Research - DOE, DOT Announce Collaboration to Advance

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

    Smart Transportation Systems DOE, DOT Announce Collaboration to Advance Smart Transportation Systems May 17, 2016 The U.S. Department of Energy (DOE) and U.S. Department of Transportation (DOT) recently announced their collaboration to accelerate research, demonstration, and deployment of innovative transportation and alternative fuel technologies. The agencies made their formal Memorandum of Understanding known at an electric vehicle workshop in Berkeley, California. The initiative will tap

  5. Metal Halide Surface Treatment of Quantum Dots - Energy Innovation Portal

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

    Advanced Materials Advanced Materials Find More Like This Return to Search Metal Halide Surface Treatment of Quantum Dots National Renewable Energy Laboratory Contact NREL About This Technology Technology Marketing Summary Quantum dot (QD) solids are a solution-processed, composite thin film semiconductor system that is being developed for optoelectronics (display technology, solid state lighting, next generation photovoltaics, photodetector application, etc.). For photovoltaics, in addition to

  6. Los Alamos researchers unravel the mystery of quantum dot blinking

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

    Researchers unravel the mystery of quantum dot blinking Los Alamos researchers unravel the mystery of quantum dot blinking Most exciting is that the Los Alamos researchers have shown that blinking can be controlled and even completely suppressed electrochemically. November 9, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

  7. Deformation potentials of CdSe quantum dots

    SciTech Connect

    Li, Jingbo; Wang, Lin-Wang

    2004-06-02

    The size dependent deformation potentials of CdSe quantum dots are studied by first principle and semi-empirical pseudopotentials calculations. They find that the amplitude of the quantum dot deformation potential is only slightly larger than the bulk value, and this increase is mostly caused by the off {Lambda} point deformation potentials in the bulk, which are larger in amplitude than the {Lambda} point deformation potential.

  8. Los Alamos Quantum Dots for Solar, Display Technology

    SciTech Connect

    Klimov, Victor

    2015-04-13

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

  9. Tunable Quantum Dot Solids: Impact of Interparticle Interactions on Bulk

    Office of Scientific and Technical Information (OSTI)

    Properties (Technical Report) | SciTech Connect Tunable Quantum Dot Solids: Impact of Interparticle Interactions on Bulk Properties Citation Details In-Document Search Title: Tunable Quantum Dot Solids: Impact of Interparticle Interactions on Bulk Properties QD-solids comprising self-assembled semiconductor nanocrystals such as CdSe are currently under investigation for use in a wide array of applications including light emitting diodes, solar cells, field effect transistors, photodetectors,

  10. Magneto-optical absorption in semiconducting spherical quantum dots: Influence of the dot-size, confining potential, and magnetic field

    SciTech Connect

    Kushwaha, Manvir S.

    2014-12-15

    Semiconducting quantum dots – more fancifully dubbed artificial atoms – are quasi-zero dimensional, tiny, man-made systems with charge carriers completely confined in all three dimensions. The scientific quest behind the synthesis of quantum dots is to create and control future electronic and optical nanostructures engineered through tailoring size, shape, and composition. The complete confinement – or the lack of any degree of freedom for the electrons (and/or holes) – in quantum dots limits the exploration of spatially localized elementary excitations such as plasmons to direct rather than reciprocal space. Here we embark on a thorough investigation of the magneto-optical absorption in semiconducting spherical quantum dots characterized by a confining harmonic potential and an applied magnetic field in the symmetric gauge. This is done within the framework of Bohm-Pines’ random-phase approximation that enables us to derive and discuss the full Dyson equation that takes proper account of the Coulomb interactions. As an application of our theoretical strategy, we compute various single-particle and many-particle phenomena such as the Fock-Darwin spectrum; Fermi energy; magneto-optical transitions; probability distribution; and the magneto-optical absorption in the quantum dots. It is observed that the role of an applied magnetic field on the absorption spectrum is comparable to that of a confining potential. Increasing (decreasing) the strength of the magnetic field or the confining potential is found to be analogous to shrinking (expanding) the size of the quantum dots: resulting into a blue (red) shift in the absorption spectrum. The Fermi energy diminishes with both increasing magnetic-field and dot-size; and exhibits saw-tooth-like oscillations at large values of field or dot-size. Unlike laterally confined quantum dots, both (upper and lower) magneto-optical transitions survive even in the extreme instances. However, the intra-Landau level

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

    SciTech Connect

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

    2014-08-26

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

  12. Effect of carrier dynamics and temperature on two-state lasing in semiconductor quantum dot lasers

    SciTech Connect

    Korenev, V. V. Savelyev, A. V.; Zhukov, A. E.; Omelchenko, A. V.; Maximov, M. V.

    2013-10-15

    It is analytically shown that the both the charge carrier dynamics in quantum dots and their capture into the quantum dots from the matrix material have a significant effect on two-state lasing phenomenon in quantum dot lasers. In particular, the consideration of desynchronization in electron and hole capture into quantum dots allows one to describe the quenching of ground-state lasing observed at high injection currents both qualitatevely and quantitatively. At the same time, an analysis of the charge carrier dynamics in a single quantum dot allowed us to describe the temperature dependences of the emission power via the ground- and excited-state optical transitions of quantum dots.

  13. The impact of quantum dot filling on dual-band optical transitions via intermediate quantum states

    SciTech Connect

    Wu, Jiang; Passmore, Brandon; Manasreh, M. O.

    2015-08-28

    InAs/GaAs quantum dot infrared photodetectors with different doping levels were investigated to understand the effect of quantum dot filling on both intraband and interband optical transitions. The electron filling of self-assembled InAs quantum dots was varied by direct doping of quantum dots with different concentrations. Photoresponse in the near infrared and middle wavelength infrared spectral region was observed from samples with low quantum dot filling. Although undoped quantum dots were favored for interband transitions with the absence of a second optical excitation in the near infrared region, doped quantum dots were preferred to improve intraband transitions in the middle wavelength infrared region. As a result, partial filling of quantum dot was required, to the extent of maintaining a low dark current, to enhance the dual-band photoresponse through the confined electron states.

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

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

    R&D Magazine: Windows into Solar Power Sources with Quantum Dots R&D Magazine: Windows into Solar Power Sources with Quantum Dots A luminescent solar concentrator is an emerging ...

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

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

    R&D Magazine: Windows into Solar Power Sources with Quantum Dots August 30, 2015 R&D Magazine: Windows into Solar Power Sources with Quantum Dots A luminescent solar concentrator ...

  16. New Los Alamos approach may be key to quantum dot solar cells...

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

    Researchers have demonstrated an almost four-fold boost of the carrier multiplication yield with nanoengineered quantum dots. June 18, 2014 Coreshell PbSeCdSe quantum dots (a) ...

  17. BA capped CdSe quantum dot sensitized solar cell (Conference...

    Office of Scientific and Technical Information (OSTI)

    BA capped CdSe quantum dot sensitized solar cell Citation Details In-Document Search Title: BA capped CdSe quantum dot sensitized solar cell Authors: Sykora, Milan 1 ; Koposov, ...

  18. CdSe Quantum-Dot-Sensitized Solar Cell with ~100% Internal Quantum...

    Office of Scientific and Technical Information (OSTI)

    CdSe Quantum-Dot-Sensitized Solar Cell with 100% Internal Quantum Efficiency Citation Details In-Document Search Title: CdSe Quantum-Dot-Sensitized Solar Cell with 100% Internal ...

  19. Overview of DOE - DOT December 2009 CNG and Hydrogen Fuels Workshop...

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

    DOE - DOT December 2009 CNG and Hydrogen Fuels Workshop Overview of DOE - DOT December 2009 CNG and Hydrogen Fuels Workshop These slides were presented at the Onboard Storage Tank ...

  20. Thick-shell nanocrystal quantum dots (Patent) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Title: Thick-shell nanocrystal quantum dots Colloidal nanocrystal quantum dots comprising an inner core having an average diameter of at least 1.5 nm and an outer shell, where said ...

  1. PbSe Quantum Dot Solar Cells with More than 6% Efficiency Fabricated...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: PbSe Quantum Dot Solar Cells with More than 6% Efficiency Fabricated in Ambient Atmosphere Citation Details In-Document Search Title: PbSe Quantum Dot Solar Cells ...

  2. Engineered CuInSexS2-x Quantum Dots for Sensitized Solar Cells...

    Office of Scientific and Technical Information (OSTI)

    Engineered CuInSexS2-x Quantum Dots for Sensitized Solar Cells Citation Details In-Document Search Title: Engineered CuInSexS2-x Quantum Dots for Sensitized Solar Cells Authors: ...

  3. Charge Generation in PbS Quantum Dot Solar Cells Characterized...

    Office of Scientific and Technical Information (OSTI)

    Dot Solar Cells Characterized by Temperature-Dependent Steady-State Photoluminescence Citation Details In-Document Search Title: Charge Generation in PbS Quantum Dot Solar Cells ...

  4. Surface Induced Magnetism in Quantum Dots

    SciTech Connect

    Meulenberg, R W; Lee, J I

    2009-08-20

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

  5. Nonradiative recombination of excitons in semimagnetic quantum dots

    SciTech Connect

    Chernenko, A. V.

    2015-12-15

    The mechanisms of the nonradiative recombination of excitons in neutral and charged quantum dots based on II–VI semimagnetic semiconductors are investigated. It is shown that, along with the dipole–dipole and direct-exchange mechanisms, there is one more mechanism referred to as the indirect-exchange mechanism and related to sp–d mixing. The selection rules for nonradiative recombination by exchange mechanisms are subsequently derived. The dependence of the efficiency of all recombination mechanisms on the quantum-dot size is studied. The experimentally observed growth in the intracenter photoluminescence intensity with decreasing size of dots and nanocrystals is accounted for. Methods for experimental determination of the contributions of different mechanisms to nonradiative recombination are discussed.

  6. DOT-7A Type A packaging design guide

    SciTech Connect

    Kelly, D.L.

    1995-01-23

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

  7. Out-of-Equilibrium Kondo Effect in Double Quantum Dots

    SciTech Connect

    Aguado, Ramon; Langreth, David C.

    2000-08-28

    The out-of-equilibrium transport properties of a double quantum dot system in the Kondo regime are studied theoretically by means of a two-impurity Anderson Hamiltonian with interimpurity hopping. The Hamiltonian is solved by means of a nonequilibrium generalization of the slave-boson mean-field theory. It is demonstrated that measurements of the differential conductance dI/dV , for appropriate values of voltages and tunneling couplings, can give a direct observation of the coherent superposition between the many-body Kondo states of each dot. For large voltages and arbitrarily large interdot tunneling, there is a critical voltage above which the physical behavior of the system again resembles that of two decoupled quantum dots. (c) 2000 The American Physical Society.

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

    SciTech Connect

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

    1994-06-01

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

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

    SciTech Connect

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

    1994-03-01

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

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

    SciTech Connect

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

    2014-07-28

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

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

    DOEpatents

    Zhang, Zhenyu; Wendelken, John F.; Chang, Ming-Che; Pai, Woei Wu

    2001-01-01

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

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

    SciTech Connect

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

    2014-03-28

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

  13. Quantum-dot based nanothermometry in optical plasmonic recording media

    SciTech Connect

    Maestro, Laura Martinez; Zhang, Qiming; Li, Xiangping; Gu, Min; Jaque, Daniel

    2014-11-03

    We report on the direct experimental determination of the temperature increment caused by laser irradiation in a optical recording media constituted by a polymeric film in which gold nanorods have been incorporated. The incorporation of CdSe quantum dots in the recording media allowed for single beam thermal reading of the on-focus temperature from a simple analysis of the two-photon excited fluorescence of quantum dots. Experimental results have been compared with numerical simulations revealing an excellent agreement and opening a promising avenue for further understanding and optimization of optical writing processes and media.

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

    SciTech Connect

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

    2013-12-09

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

  15. Fast gain and phase recovery of semiconductor optical amplifiers based on submonolayer quantum dots

    SciTech Connect

    Herzog, Bastian Owschimikow, Nina; Kaptan, Yücel; Kolarczik, Mirco; Switaiski, Thomas; Woggon, Ulrike; Schulze, Jan-Hindrik; Rosales, Ricardo; Strittmatter, André; Bimberg, Dieter; Pohl, Udo W.

    2015-11-16

    Submonolayer quantum dots as active medium in opto-electronic devices promise to combine the high density of states of quantum wells with the fast recovery dynamics of self-assembled quantum dots. We investigate the gain and phase recovery dynamics of a semiconductor optical amplifier based on InAs submonolayer quantum dots in the regime of linear operation by one- and two-color heterodyne pump-probe spectroscopy. We find an as fast recovery dynamics as for quantum dot-in-a-well structures, reaching 2 ps at moderate injection currents. The effective quantum well embedding the submonolayer quantum dots acts as a fast and efficient carrier reservoir.

  16. Few-hole double quantum dot in an undoped GaAs/AlGaAs heterostructure

    SciTech Connect

    Tracy, L. A.; Hargett, T. W.; Reno, J. L.

    2014-03-24

    We demonstrate a hole double quantum dot in an undoped GaAs/AlGaAs heterostructure. The interdot coupling can be tuned over a wide range, from formation of a large single dot to two well-isolated quantum dots. Using charge sensing, we show the ability to completely empty the dot of holes and control the charge occupation in the few-hole regime. The device should allow for control of individual hole spins in single and double quantum dots in GaAs.

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

    SciTech Connect

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

    2014-12-22

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

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

    SciTech Connect

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

    2011-09-06

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

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

    SciTech Connect

    Grossi, D. F. Koenraad, P. M.; Smereka, P.; Keizer, J. G.; Ulloa, J. M.

    2014-10-06

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

  20. Suppression of low-frequency charge noise in gates-defined GaAs quantum dots

    SciTech Connect

    You, Jie; Li, Hai-Ou E-mail: gpguo@ustc.edu.cn; Wang, Ke; Cao, Gang; Song, Xiang-Xiang; Xiao, Ming; Guo, Guo-Ping E-mail: gpguo@ustc.edu.cn

    2015-12-07

    To reduce the charge noise of a modulation-doped GaAs/AlGaAs quantum dot, we have fabricated shallow-etched GaAs/AlGaAs quantum dots using the wet-etching method to study the effects of two-dimensional electron gas (2DEG) underneath the metallic gates. The low-frequency 1/f noise in the Coulomb blockade region of the shallow-etched quantum dot is compared with a non-etched quantum dot on the same wafer. The average values of the gate noise are approximately 0.5 μeV in the shallow-etched quantum dot and 3 μeV in the regular quantum dot. Our results show the quantum dot low-frequency charge noise can be suppressed by the removal of the 2DEG underneath the metallic gates, which provides an architecture for noise reduction.

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

    DOEpatents

    Forrest, Stephen R.

    2008-08-19

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

  2. Approaches to Future Generation Photovoltaics and Solar Fuels: Quantum Dots, Arrays, and Quantum Dot Solar Cells

    SciTech Connect

    Semonin, O.; Luther, J.; Beard, M.; Johnson, J.; Gao, J.; Nozik, A.

    2012-01-01

    One potential, long-term approach to more efficient and lower cost future generation solar cells for solar electricity and solar fuels is to utilize the unique properties of quantum dots (QDs) to control the relaxation pathways of excited states to enhance multiple exciton generation (MEG). We have studied MEG in close-packed PbSe QD arrays where the QDs are electronically coupled in the films and thus exhibit good transport while still maintaining quantization and MEG. We have developed simple, all-inorganic solution-processable QD solar cells that produce large short-circuit photocurrents and power conversion efficiencies above 5% via nanocrystalline p-n junctions. These solar cells show QYs for photocurrent that exceed 100% in the photon energy regions where MEG is possible; the photocurrent MEG QYs as a function of photon energy match those determined via time-resolved spectroscopy Recent analyses of the major effect of MEG combined with solar concentration on the conversion efficiency of solar cells will also be discussed.

  3. Fabrication and optical properties of multishell InAs quantum dots on GaAs nanowires

    SciTech Connect

    Yan, Xin; Zhang, Xia Li, Junshuai; Cui, Jiangong; Ren, Xiaomin

    2015-02-07

    Hybrid nanostructures combining nanowires with quantum dots promote the development of nanoelectronic and nanophotonic devices with integrated functionalities. In this work, we present a complex nanostructure with multishell quantum dots grown on nanowires. 1–4 shells of Stranski-Krastanov InAs quantum dots are grown on the sidewalls of GaAs nanowires by metal organic chemical vapor deposition. Different dot shells are separated by 8 nm GaAs spacer shells. With increasing the number of shells, the quantum dots become sparser and tend to align in one array, which is caused by the shrinkage of facets on which dots prefer to grow as well as the strain fields produced by the lower set of dots which influences the migration of In adatoms. The size of quantum dots increases with the increase of shell number due to enhanced strain fields coupling. The spectra of multishell dots exhibit multiwavelength emission, and each peak corresponds to a dot shell. This hybrid structure may serve as a promising element in nanowire intermediate band solar cells, infrared nanolasers, and photodetectors.

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

    SciTech Connect

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

    2014-03-24

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

  5. Facile synthesis and photoluminescence mechanism of graphene quantum dots

    SciTech Connect

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

    2014-12-28

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

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

    SciTech Connect

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

    2014-06-23

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

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

    SciTech Connect

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

    1998-12-03

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

  8. The Honorable Ernest Moniz

    Office of Environmental Management (EM)

    Student Edition The Harnessed Atom - Student Edition The Harnessed Atom is a middle school science, technology, engineering, and math (STEM) curriculum extension that focuses on nuclear science and energy. It is designed to provide students with accurate, unbiased, and up-to-date information on the roles that energy and nuclear science play in our lives. The curriculum includes essential principles and fundamental concepts of energy science. This update is based on the original 1985 Harnessed

  9. The Honorable W

    Office of Legacy Management (LM)

    Assuming that this transfer becomes law, but without prejudging the President' s ... Should this provision become law, the Department of Energy' s lands, property access ...

  10. The Honorable Rodney Mortemsem

    Office of Legacy Management (LM)

    condition and, where it has authority, ,performing ,environment. I Off-SiteSavannah RiverDivision' Office of Eastern Area Programs Office of Environmental Restoration' ...

  11. The Honorable James Sharpe

    Office of Legacy Management (LM)

    W. Alexander Williams (301-427-1719) of mystaff: Enclosures James W. Wagoner II ' ' . I Director Off-SiteSavannah River Division Office of Eastern Area Programs Office of ...

  12. ,The Honorable Donald Hart

    Office of Legacy Management (LM)

    W. Alexander Williams (301-427:1719) of,my,staff. . . ,:.'..;: '. ,;, (pt+& ;, ,.',, :.' I James W. Wagoner II ' . ' .' . ' Director Off-SiteSavannah River Division ...

  13. The Honorable Bernard Chaffer

    Office of Legacy Management (LM)

    W. Alexqnder Willipms.(301-427-1719) of my staff. 'James W. .Wacjonei. II Director Off-SiteSavannah River Division Office of Eastern Area,Programs Office of Environmental ...

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    Office of Legacy Management (LM)

    W. Alexander Williams (301-427-1719) of my staff. Enclosures Sincerely, Director Off-SiteSavannah River Division Office of Eastern Area Programs Office of Environmental ...

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    Office of Legacy Management (LM)

    Al,exand,er W illiams (301-427-1719) of my staff. I' Sincerely, - '8 , James W . Wagoner II -Director " "'. '. . O ff-SiteSavannah River Program Division . O ffice of ...

  16. The Honorable Jim Gasparini~

    Office of Legacy Management (LM)

    W. ., Enclosures . cc: ' ,U.,. ; ames W.,Wagoner II ., Director Off-SiteSavannah River Division : : : Office of Eastern Area Programs Office of Environmental Restoration . ...

  17. The Honorable Richard M

    Office of Legacy Management (LM)

    Alexander W illiams (301-427-1719) of my staff. Sincerely, Director Enclosures Off-SiteSavannah River Division Office of Eastern Area Programs Office of Environmental Restoration ...

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    Office of Legacy Management (LM)

    W. Alexander Williams (301-427-1719) of my staff. Enclosures James W. Wagoner II Director Off-SiteSavannah River Division Office of Eastern Area Programs Office of Environmental ...

  19. The Honorable Stephens.

    Office of Legacy Management (LM)

    If,you have any questions, please feel,free &call me at 3OI-427-1721 o,r Dr. W.,Alexander W illiams (301-427-179) of my staff.' ,, Off-SiteSavannah River Program Division ...

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    Office of Legacy Management (LM)

    If you have any questions, please feel free to call me at 301-427-1721 or Dr,. W..Alexander Williams (301-427-1719) of my staff. Off-SiteSavannah River Program Division ' ...

  1. The Honorable Anthony Mosillo'

    Office of Legacy Management (LM)

    W. Alexander Williams (301-427-1719)'of my staff.,;- ; , ; ,' ,' ., : ,.. j, 1 .'g&&,:,; ,, : ,I ames W. Wagoner II , Director Off-SiteSavannah River Division Office of' ...

  2. The Honorable Aaron Thompson.

    Office of Legacy Management (LM)

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  3. The Honorable T

    Office of Legacy Management (LM)

    47402 , Dear Mayor Allison: Secretary of Energy Hazel ... action to meet current radiological protection requirements. ... call meat 301-427-1721 or Dr:W. Alejtandet- W illiams ...

  4. honors and awards

    National Nuclear Security Administration (NNSA)

    Defense Programs Award of Excellence for their help in securing supply of a critical material for the Departments of Energy and Defense.

    The four Pantexans, Tod Botcher,...

  5. Honoring Energy Department Vets

    ScienceCinema

    Chu, Steven; Majors, Alvan; Underwood, David

    2016-07-12

    Veterans from the Army, Air Force, Navy, Marine Corps and the National Guard who work at the Department of Energy met Wednesday with Secretary Steven Chu, who hosted more than a dozen former service members to thank them for their continued service to America.

  6. ESnet awarded honorable mention

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

    was established in 2000 to encourage and recognize innovative deployment of information technology in support of the University of California's mission of teaching, research,...

  7. The Honorable Dick Cheney

    Office of Environmental Management (EM)

    ... populations centers; Much of the nation's low-cost coal and renewable resources. ... electricity grid, and the cost to consumers of a failure to do so. 6 http:...

  8. The Honorable George Livingston

    Office of Legacy Management (LM)

    George Livingston P.O. Box 4046 Richmond, California 94804 Dear Mayor Livingston: ... Co., Richmond, CA H. Collins, State of California 43 Printed wth soy mk on recycled paper ...

  9. The Honorable Gene Dean

    Office of Legacy Management (LM)

    DOE performed a radiological survey at the former'leduction Pilot Plant site ,and we ... W. Alexander Williams at 301-427-1719 of my staff; Enclosures "Off-SiteSavannah River.Program ...

  10. Lab Honors Military Veterans

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

    Lab Game-Changers in Our Past and Future Lab Game-Changers in Our Past and Future March 20, 2012 - 1:17pm Addthis A researcher at the Joint Bioenergy Institute at Berkeley National Lab chooses bacteria colonies in their efforts to create a game-changing biofuel from sustainable, energy-dense plants, such as switchgrass. The JBEI is one example of the ability for Energy Department labs to form scientific partnerships designed to hurdle an energy barrier with transformative technology. | Photo

  11. The Honorable Dick Cheney

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

    February 27, 2012 Mr. Brian Mills Office of Electricity Delivery and Energy Reliability (OE-20) U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 Re: Notice of Proposed Rulemaking: Coordination of Federal Authorizations for Electric Transmission Facilities Dear Mr. Mills: I am writing, on behalf of the multi-sector membership of the Western Business Roundtable ("Roundtable"), regarding the Department of Energy's ("DOE") notice of proposed rulemaking

  12. The Honorable Ernest Moniz

    Energy.gov [DOE] (indexed site)

    Electric Cooperative Association (NRECA) and the American Public Power Association (APPA) together represent over 1,200 cooperative and publicly owned utilities in 34 states...

  13. Honore_1986.pdf

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

  14. Honoring Our Vets

    Energy.gov [DOE]

    Secretary Steven Chu commemorates Veteran's Day by meeting with more than a dozen former service members to thank them for their continued service to America.

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

    SciTech Connect

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

    2014-10-06

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

  16. QCAD simulation and optimization of semiconductor double quantum dots

    SciTech Connect

    Nielsen, Erik; Gao, Xujiao; Kalashnikova, Irina; Muller, Richard Partain; Salinger, Andrew Gerhard; Young, Ralph Watson

    2013-12-01

    We present the Quantum Computer Aided Design (QCAD) simulator that targets modeling quantum devices, particularly silicon double quantum dots (DQDs) developed for quantum qubits. The simulator has three di erentiating features: (i) its core contains nonlinear Poisson, e ective mass Schrodinger, and Con guration Interaction solvers that have massively parallel capability for high simulation throughput, and can be run individually or combined self-consistently for 1D/2D/3D quantum devices; (ii) the core solvers show superior convergence even at near-zero-Kelvin temperatures, which is critical for modeling quantum computing devices; (iii) it couples with an optimization engine Dakota that enables optimization of gate voltages in DQDs for multiple desired targets. The Poisson solver includes Maxwell- Boltzmann and Fermi-Dirac statistics, supports Dirichlet, Neumann, interface charge, and Robin boundary conditions, and includes the e ect of dopant incomplete ionization. The solver has shown robust nonlinear convergence even in the milli-Kelvin temperature range, and has been extensively used to quickly obtain the semiclassical electrostatic potential in DQD devices. The self-consistent Schrodinger-Poisson solver has achieved robust and monotonic convergence behavior for 1D/2D/3D quantum devices at very low temperatures by using a predictor-correct iteration scheme. The QCAD simulator enables the calculation of dot-to-gate capacitances, and comparison with experiment and between solvers. It is observed that computed capacitances are in the right ballpark when compared to experiment, and quantum con nement increases capacitance when the number of electrons is xed in a quantum dot. In addition, the coupling of QCAD with Dakota allows to rapidly identify which device layouts are more likely leading to few-electron quantum dots. Very efficient QCAD simulations on a large number of fabricated and proposed Si DQDs have made it possible to provide fast feedback for design

  17. Exploring Competing Kinetic Processes in Quantum Dots Linked to Electrode

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

    Surfaces | MIT-Harvard Center for Excitonics Competing Kinetic Processes in Quantum Dots Linked to Electrode Surfaces March 14, 2012 at 2:30pm/4-349 Mark Hybertsen Brookhaven National Laboratory, Columbia University Mark_Hybertsen001_000 Abstract: Exploiting the unique properties of nanostructured chromophores for light harvesting applications relies on the balance between competing kinetic processes including energy transfer, carrier relaxation and carrier tunneling. In the first part of

  18. Excited-state spectroscopy of InP quantum dots

    SciTech Connect

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

    1998-02-01

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

  19. A reconfigurable gate architecture for Si/SiGe quantum dots

    SciTech Connect

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

    2015-06-01

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

  20. Density functional calculation of the structural and electronic properties of germanium quantum dots

    SciTech Connect

    Anas, M. M.; Gopir, G.

    2015-04-24

    We apply first principles density functional computational methods to study the structures, densities of states (DOS), and higher occupied molecular orbital (HOMO) – lowest unoccupied molecular orbital (LUMO) gaps of selected free-standing Ge semiconductor quantum dots up to 1.8nm. Our calculations are performed using numerical atomic orbital approach where linear combination of atomic orbital was applied. The surfaces of the quantum dots was passivized by hydrogen atoms. We find that surface passivation does affect the electronic properties associated with the changes of surface state, electron localization, and the energy gaps of germanium nanocrystals as well as the confinement of electrons inside the quantum dots (QDs). Our study shows that the energy gaps of germanium quantum dots decreases with the increasing dot diameter. The size-dependent variations of the computed HOMO-LUMO gaps in our quantum dots model were found to be consistent with the effects of quantum confinement reported in others theoretical and experimental calculation.

  1. Fabrication and evaluation of series-triple quantum dots by thermal oxidation of silicon nanowire

    SciTech Connect

    Uchida, Takafumi Jo, Mingyu; Tsurumaki-Fukuchi, Atsushi; Arita, Masashi; Takahashi, Yasuo; Fujiwara, Akira

    2015-11-15

    Series-connected triple quantum dots were fabricated by a simple two-step oxidation technique using the pattern-dependent oxidation of a silicon nanowire and an additional oxidation of the nanowire through the gap of the fine gates attached to the nanowire. The characteristics of multi-dot single-electron devices are obtained. The formation of each quantum dot beneath an attached gate is confirmed by analyzing the electrical characteristics and by evaluating the gate capacitances between all pairings of gates and quantum dots. Because the gate electrode is automatically attached to each dot, the device structure benefits from scalability. This technique promises integrability of multiple quantum dots with individual control gates.

  2. Antimony mediated growth of high-density InAs quantum dots for photovoltaic cells

    SciTech Connect

    Tutu, F. K.; Wu, J.; Lam, P.; Tang, M.; Liu, H.; Miyashita, N.; Okada, Y.; Wilson, J.; Allison, R.

    2013-07-22

    We report enhanced solar cell performance using high-density InAs quantum dots. The high-density quantum dot was grown by antimony mediated molecular beam epitaxy. In-plane quantum dot density over 1 × 10{sup 11} cm{sup −2} was achieved by applying a few monolayers of antimony on the GaAs surface prior to quantum dot growth. The formation of defective large clusters was reduced by optimization of the growth temperature and InAs coverage. Comparing with a standard quantum dot solar cell without the incorporation of antimony, the high-density quantum dot solar cell demonstrates a distinct improvement in short-circuit current from 7.4 mA/cm{sup 2} to 8.3 mA/cm{sup 2}.

  3. The emission wavelength dependent photoluminescence lifetime of the N-doped graphene quantum dots

    SciTech Connect

    Deng, Xingxia; Sun, Jing; Yang, Siwei; Ding, Guqiao; Shen, Hao; Zhou, Wei; Lu, Jian; Wang, Zhongyang

    2015-12-14

    Aromatic nitrogen doped graphene quantum dots were investigated by steady-state and time-resolved photoluminescence (PL) techniques. The PL lifetime was found to be dependent on the emission wavelength and coincident with the PL spectrum, which is different from most semiconductor quantum dots and fluorescent dyes. This result shows the synergy and competition between the quantum confinement effect and edge functional groups, which may have the potential to guide the synthesis and expand the applications of graphene quantum dots.

  4. Quantum-dot solar windows evolve with 'doctor-blade' spreading

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

    Quantum-dot solar windows evolve with 'doctor-blade' spreading Quantum-dot solar windows evolve with 'doctor-blade' spreading A Los Alamos National Laboratory research team demonstrates an important step in taking quantum dot, solar-powered windows from the laboratory to the construction site. October 11, 2016 Los Alamos Center for Advanced Solar Photophysics researchers hold a large prototype solar window. From left to right: Jaehoon Lim, Kaifeng Wu, Victor Klimov, Hongbo Li. Los Alamos Center

  5. Quantum-dot solar windows evolve with 'doctor-blade' spreading

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

    Quantum-dot solar windows evolve with 'doctor-blade' spreading At the Bradbury Latest Issue:November 2016 all issues All Issues » submit Quantum-dot solar windows evolve with 'doctor-blade' spreading A Los Alamos National Laboratory research team demonstrates an important step in taking quantum dot, solar-powered windows from the laboratory to the construction site. November 1, 2016 Los Alamos Center for Advanced Solar Photophysics researchers hold a large prototype solar window. From left to

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

    SciTech Connect

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

    2009-08-10

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

  7. Coupling single giant nanocrystal quantum dots to the fundamental mode of

    Office of Scientific and Technical Information (OSTI)

    patch nanoantennas through fringe field (Journal Article) | SciTech Connect Coupling single giant nanocrystal quantum dots to the fundamental mode of patch nanoantennas through fringe field Citation Details In-Document Search Title: Coupling single giant nanocrystal quantum dots to the fundamental mode of patch nanoantennas through fringe field Through single dot spectroscopy and numerical simulation studies, we demonstrate that the fundamental mode of gold patch nanoantennas have

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

    SciTech Connect

    Not Available

    2011-02-01

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

  9. Excited-State Relaxation in PbSe Quantum Dots

    SciTech Connect

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

    2008-01-01

    In solids the phonon-assisted, nonradiative decay from high-energy electronic excited states to low-energy electronic excited states is picosecond fast. It was hoped that electron and hole relaxation could be slowed down in quantum dots, due to the unavailability of phonons energy matched to the large energy-level spacings ('phonon-bottleneck'). However, excited-state relaxation was observed to be rather fast ({le}1 ps) in InP, CdSe, and ZnO dots, and explained by an efficient Auger mechanism, whereby the excess energy of electrons is nonradiatively transferred to holes, which can then rapidly decay by phonon emission, by virtue of the densely spaced valence-band levels. The recent emergence of PbSe as a novel quantum-dot material has rekindled the hope for a slow down of excited-state relaxation because hole relaxation was deemed to be ineffective on account of the widely spaced hole levels. The assumption of sparse hole energy levels in PbSe was based on an effective-mass argument based on the light effective mass of the hole. Surprisingly, fast intraband relaxation times of 1-7 ps were observed in PbSe quantum dots and have been considered contradictory with the Auger cooling mechanism because of the assumed sparsity of the hole energy levels. Our pseudopotential calculations, however, do not support the scenario of sparse hole levels in PbSe: Because of the existence of three valence-band maxima in the bulk PbSe band structure, hole energy levels are densely spaced, in contradiction with simple effective-mass models. The remaining question is whether the Auger decay channel is sufficiently fast to account for the fast intraband relaxation. Using the atomistic pseudopotential wave functions of Pb{sub 2046}Se{sub 2117} and Pb{sub 260}Se{sub 249} quantum dots, we explicitly calculated the electron-hole Coulomb integrals and the P {yields} S electron Auger relaxation rate. We find that the Auger mechanism can explain the experimentally observed P {yields} S

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

    SciTech Connect

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

    2014-08-04

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

  11. Red shift in the photoluminescence of colloidal carbon quantum dots induced by photon reabsorption

    SciTech Connect

    Zhang, Wenxia; Dai, Dejian; Chen, Xifang; Guo, Xiaoxiao; Fan, Jiyang

    2014-03-03

    We synthesize the colloidal carbon/graphene quantum dots 1–9 nm in diameter and study their photoluminescence properties. Surprisingly, the luminescence properties of a fixed collection of colloidal carbon quantum dots can be systematically changed as the concentration varies. A model based on photon reabsorption is proposed which explains well the experiment. Infrared spectral study indicates that the surfaces of the carbon quantum dots are substantially terminated by oxygen atoms, which causes their ultra-high hydrophilicity. Our result clarifies the mystery of distinct emission colors in carbon quantum dots and indicates that photon reabsorption can strongly affect the luminescence properties of colloidal nanocrystals.

  12. Quantum transport through the system of parallel quantum dots with Majorana bound states

    SciTech Connect

    Wang, Ning; Li, Yuxian; Lv, Shuhui

    2014-02-28

    We study the tunneling transport properties through a system of parallel quantum dots which are coupled to Majorana bound states (MBSs). The conductance and spectral function are computed using the retarded Green's function method based on the equation of motion. The conductance of the system is 2e{sup 2}/h at zero Fermi energy and is robust against the coupling between the MBSs and the quantum dots. The dependence of the Fermi energy on the spectral function is different for the first dot (dot1) than for the second dot (dot2) with fixed dot2-MBSs coupling. The influence of the Majorana bound states on the spectral function was studied for the series and parallel configurations of the system. It was found that when the configuration is in series, the Majorana bound states play an important role, resulting in a spectral function with three peaks. However, the spectral function shows two peaks when the system is in a parallel configuration. The zero Fermi energy spectral function is always 1/2 not only in series but also in the parallel configuration and robust against the coupling between the MBSs and the quantum dots. The phase diagram of the Fermi energy versus the quantum dot energy levels was also investigated.

  13. Improvement of plasmonic enhancement of quantum dot emission via an intermediate silicon-aluminum oxide interface

    SciTech Connect

    Wing, Waylin J.; Sadeghi, Seyed M. Campbell, Quinn

    2015-01-05

    We studied the emission of quantum dots in the presence of plasmon-metal oxide substrates, which consist of arrays of metallic nanorods embedded in amorphous silicon coated with a nanometer-thin layer of aluminum oxide on the top. We showed that the combined effects of plasmons and the silicon-aluminum oxide interface can lead to significant enhancement of the quantum efficiency of quantum dots. Our results show that such an interface can significantly enhance plasmonic effects of the nanorods via quantum dot-induced exciton-plasmon coupling, leading to partial polarization of the quantum dots' emission.

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

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

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

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

    Office of Scientific and Technical Information (OSTI)

    State Lighting Citation Details In-Document Search Title: Giant Nanocrystal Quantum Dots as Stable and Efficient Down-Conversion Phosphor for LED based Solid State Lighting You ...

  16. Cornell dots research collaboration leads to $10M cancer center > EMC2 News

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

    > The Energy Materials Center at Cornell dots research collaboration leads to $10M cancer center September 24th, 2015 › Provided/Wiesner Lab A rendering of the molecular structure of a Cornell dot, which is smaller than 10 nanometers. Provided/Wiesner Lab A transmission electron microscope image of Cornell dots. C dots, which are injected into patients, are designed to either adhere to and light up cancer cells or quickly leave the body. Cornell University, in partnership with Memorial

  17. In the OSTI Collections: Quantum Dots | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... Strongly Coupled Quantum Dot Solids"SciTech Connect, in which electrical noise, and the effects on electrical conductivity of magnetic fields and chemical modifications, were ...

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

    Office of Scientific and Technical Information (OSTI)

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

  19. UltraDots Inc formely UltraPhotonics | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ) Place: Fremont, California Zip: CA 94539 Product: Nanotechnology company developing "quantum dot" technology for a range of energy, communications and medical applications....

  20. Quantum-dot solar windows evolve with 'doctor-blade' spreading

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

    Quantum-dot solar windows evolve with 'doctor-blade' spreading Quantum-dot solar windows evolve with 'doctor-blade' spreading Los Alamos scientists report on large LSC windows created using the "doctor-blade" technique for depositing thin layers of a dot/polymer composite on top of commercial large-area glass slab. November 4, 2016 Quantum-dot solar windows evolve with 'doctor-blade' spreading Los Alamos Center for Advanced Solar Photophysics researchers hold a large prototype solar

  1. Quantum Dots Promise to Significantly Boost Photovoltaic Efficiencies; The Spectrum of Clean Energy Innovation (Fact Sheet)

    SciTech Connect

    Not Available

    2010-06-01

    Fact sheet describing NREL's discovery that quantum dots--semiconductor nanocrystals--can dramatically increase the efficiency of converting sunlight to electricity.

  2. Observation of the Kondo effect in a spin-3/2 hole quantum dot (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Observation of the Kondo effect in a spin-3/2 hole quantum dot Citation Details In-Document Search Title: Observation of the Kondo effect in a spin-3/2 hole quantum dot We report the observation of the Kondo effect in a spin-3/2 hole quantum dot formed near pinch-off in a GaAs quantum wire. We clearly observe two distinctive hallmarks of quantum dot Kondo physics. First, the zero-bias peak in the differential conductance splits an in-plane magnetic field and the

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

    SciTech Connect

    Buljan, Maja Radi?, Nikola; Bernstorff, Sigrid; Drai?, Goran; Bogdanovi?-Radovi?, Iva; Hol, Vclav

    2012-01-01

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

  4. Negative circular polarization as a universal property of quantum dots

    SciTech Connect

    Taylor, Matthew W.; Spencer, Peter; Murray, Ray

    2015-03-23

    This paper shows that negative circular polarization, a spin flip of polarized carriers resulting in emission of opposite helicity, can be observed in undoped, n-doped, and p-doped InAs/GaAs quantum dots. These results contradict the usual interpretation of the effect. We show using power dependent and time resolved spectroscopy that the generation of negative circular polarization correlates with excited state emission. Furthermore, a longer spin lifetime of negatively polarized excitons is observed where emission is largely ground state in character.

  5. A nonlinear Bloch model for Coulomb interaction in quantum dots

    SciTech Connect

    Bidegaray-Fesquet, Brigitte Keita, Kole

    2014-02-15

    In this paper, we first derive a Coulomb Hamiltonian for electron–electron interaction in quantum dots in the Heisenberg picture. Then we use this Hamiltonian to enhance a Bloch model, which happens to be nonlinear in the density matrix. The coupling with Maxwell equations in case of interaction with an electromagnetic field is also considered from the Cauchy problem point of view. The study is completed by numerical results and a discussion about the advisability of neglecting intra-band coherences, as is done in part of the literature.

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

    SciTech Connect

    Vlahovic, Branislav Filikhin, Igor

    2014-10-06

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

  7. Electronic structure of nanocrystal quantum-dot quantumwells

    SciTech Connect

    Schrier, Joshua; Wang, Lin-Wang

    2006-06-26

    The electronic states of CdS/CdSe/CdS colloidal nanocrystalquantum-dot quantum wells are studied by large-scale pseudopotentiallocal density approximation (LDA) calculations. Using this approach, wedetermine the effects of CdS core size, CdSe well thickness, and CdSshell thickness on the band-edge wave functions, band-gap, andelectron-hole Coulomb interactions. We find the conduction-band wavefunction to be less confined to the CdSe well layer than predicted by kcdot p effective-mass theory, which accounts for the previous underestimation of the electron g factor.

  8. Photoluminescence-enhanced biocompatible quantum dots by phospholipid functionalization

    SciTech Connect

    Shi Yunfeng; He Peng Zhu Xinyuan

    2008-10-02

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

  9. The dosimetric consequences of the new DOT LSA definition

    SciTech Connect

    Mis, F.J.

    1996-10-01

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

  10. Photocurrent extraction efficiency in colloidal quantum dot photovoltaics

    SciTech Connect

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

    2013-11-18

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

  11. Activation of molecular catalysts using semiconductor quantum dots

    DOEpatents

    Meyer, Thomas J.; Sykora, Milan; Klimov, Victor I.

    2011-10-04

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

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

    SciTech Connect

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

    1998-02-01

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

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

    SciTech Connect

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

    2011-11-17

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

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

    SciTech Connect

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

    1992-06-08

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

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

    DOEpatents

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

    2007-03-20

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

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

    DOEpatents

    Nie, Shuming; Chan, Warren C. W.; Emory, Steven R.

    2002-01-01

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

  17. Single photon emission from site-controlled InGaN/GaN quantum dots

    SciTech Connect

    Zhang, Lei; Hill, Tyler A.; Deng, Hui; Teng, Chu-Hsiang; Lee, Leung-Kway; Ku, Pei-Cheng

    2013-11-04

    Single photon emission was observed from site-controlled InGaN/GaN quantum dots. The single-photon nature of the emission was verified by the second-order correlation function up to 90 K, the highest temperature to date for site-controlled quantum dots. Micro-photoluminescence study on individual quantum dots showed linearly polarized single exciton emission with a lifetime of a few nanoseconds. The dimensions of these quantum dots were well controlled to the precision of state-of-the-art fabrication technologies, as reflected in the uniformity of their optical properties. The yield of optically active quantum dots was greater than 90%, among which 13%–25% exhibited single photon emission at 10 K.

  18. Engineering the hole confinement for CdTe-based quantum dot molecules

    SciTech Connect

    Kłopotowski, Ł. Wojnar, P.; Kret, S.; Fronc, K.; Wojtowicz, T.; Karczewski, G.

    2015-06-14

    We demonstrate an efficient method to engineer the quantum confinement in a system of two quantum dots grown in a vertical stack. We achieve this by using materials with a different lattice constant for the growth of the outer and inner barriers. We monitor the resulting dot morphology with transmission electron microscopy studies and correlate the results with ensemble quantum dot photoluminescence. Furthermore, we embed the double quantum dots into diode structures and study photoluminescence as a function of bias voltage. We show that in properly engineered structures, it is possible to achieve a resonance of the hole states by tuning the energy levels with electric field. At the resonance, we observe signatures of a formation of a molecular state, hybridized over the two dots.

  19. Phonon bottleneck in p-type Ge/Si quantum dots

    SciTech Connect

    Yakimov, A. I.; Kirienko, V. V.; Armbrister, V. A.; Bloshkin, A. A.; Dvurechenskii, A. V.

    2015-11-23

    We study the effect of quantum dot size on the mid-infrared photo- and dark current, photoconductive gain, and hole capture probability in ten-period p-type Ge/Si quantum dot heterostructures. The dot dimensions are varied by changing the Ge coverage and the growth temperature during molecular beam epitaxy of Ge/Si(001) system in the Stranski-Krastanov growth mode. In all samples, we observed the general tendency: with decreasing the size of the dots, the dark current and hole capture probability are reduced, while the photoconductive gain and photoresponse are enhanced. Suppression of the hole capture probability in small-sized quantum dots is attributed to a quenched electron-phonon scattering due to phonon bottleneck.

  20. Formation of strain-induced quantum dots in gated semiconductor nanostructures

    SciTech Connect

    Thorbeck, Ted; Zimmerman, Neil M.

    2015-08-15

    A long-standing mystery in the field of semiconductor quantum dots (QDs) is: Why are there so many unintentional dots (also known as disorder dots) which are neither expected nor controllable. It is typically assumed that these unintentional dots are due to charged defects, however the frequency and predictability of the location of the unintentional QDs suggests there might be additional mechanisms causing the unintentional QDs besides charged defects. We show that the typical strains in a semiconductor nanostructure from metal gates are large enough to create strain-induced quantum dots. We simulate a commonly used QD device architecture, metal gates on bulk silicon, and show the formation of strain-induced QDs. The strain-induced QD can be eliminated by replacing the metal gates with poly-silicon gates. Thus strain can be as important as electrostatics to QD device operation operation.