Navigation Links
Mismatched alloys are a good match for thermoelectrics
Date:1/27/2010

n their theoretical work, Wu and his colleagues discovered that this type of electronic structure engineering can be greatly beneficial for thermoelectricity. Working with the semiconductor zinc selenide, they simulated the introduction of two dilute concentrations of oxygen atoms (3.125 and 6.25 percent respectively) to create model HMAs. In both cases, the oxygen impurities were shown to induce peaks in the electronic density of states above the conduction band minimum. It was also shown that charge densities near the density of state peaks were substantially attracted toward the highly electronegative oxygen atoms.

Wu and his colleagues found that for each of the simulation scenarios, the impurity-induced peaks in the electronic density of states resulted in a "sharp increase" of both thermopower and electric conductivity compared to oxygen-free zinc selenide. The increases were by factors of 30 and 180 respectively.

"Furthermore, this effect is found to be absent when the impurity electronegativity matches the host that it substitutes," Wu says. "These results suggest that highly electronegativity-mismatched alloys can be designed for high performance thermoelectric applications."

Wu and his research group are now working to actually synthesize HMAs for physical testing in the laboratory. In addition to capturing energy that is now being wasted, Wu believes that HMA-based thermoelectrics can also be used for solid state cooling, in which a thermoelectric device is used to cool other devices or materials.

"Thermoelectric coolers have advantages over conventional refrigeration technology in that they have no moving parts, need little maintenance, and work at a much smaller spatial scale," Wu says.


'/>"/>

Contact: Lynn Yarris
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Kiadis Pharma Reports ATIR(TM) Clinical Data, Further Supporting its Potential in Mismatched Bone Marrow Transplantations
2. Argonne scientist to give the plenary talk at Royal Society of Chemistry meeting on nanoalloys
3. Re-Shaping the Future with Shape Memory Alloys - SMA Starter Kit
4. WCC Smart Search & Match and Retica Announce Global Collaboration
5. Bio Career Center Develops New Tool to Assist in Employer/Candidate Match
6. LI-COR Biosciences Offers $1.75 Million in Matching Funds for Undergraduate Genomics Education
7. TechConnect World 2009 Matches Tomorrows Technology Solutions with Todays Business Needs for Clean-Technology, Biotechnology and Nanotechnology
8. Matching Genetics, Technology and Management Practices Critical to Meeting Strong Demand for Agricultural Crops
9. Smith & Nephew Launches VISIONAIRE(TM) Patient Matched Technology for Total Knee Replacement
10. EyeIC Receives FDA 510(k) Clearance for MatchedFlicker(TM) Retinal Aid Detection Technology
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Mismatched alloys are a good match for thermoelectrics
(Date:4/16/2015)... -- Schulman Associates IRB, Inc., the industry-leading central IRB in ... on Laboratory Drive in the heart of ... will house review board and service staff, which will ... customer service to clients. CBRE | ... deal, while Capital Associates Management, LLC represented the landlord.   ...
(Date:4/16/2015)... According to the 2014 Liberty Mutual ... was ranked first among the leading causes of ... pushing, pulling, holding, carrying, or throwing and cost ... Round Company takes statistics like this very seriously. ... develop and design equipment that prevents these injuries ...
(Date:4/16/2015)... 2015 The Council for Agricultural ... 2015 Borlaug CAST Communication Award goes to Dr. ... University in Alabama. Award nominees must demonstrate an ... and/or the use of television, radio, or other ... As a specialist in the field of plant ...
(Date:4/16/2015)... - Portage Biotech Inc. ("Portage" or "the Company" )) ... to announce that the Company will be presenting  at ... be held in London, UK . ... James Mellon , a director of Portage, will ... programs at its subsidiaries, Portage Pharmaceuticals Ltd. ("PPL"), and ...
Breaking Biology Technology:Schulman IRB to Open Office in Research Triangle Park, N.C. 2The David Round Company Helps Companies Meet OSHA Standards by Combining Safety, Ergonomics, and Productivity 2The 2015 Borlaug CAST Communication Award Goes to Channapatna Prakash 2Portage to Present at Master Investor 2015 in London, UK 2Portage to Present at Master Investor 2015 in London, UK 3Portage to Present at Master Investor 2015 in London, UK 4
... Biopharmaceuticals (Nasdaq: KERX ) today announced completion ... its Phase 3 registration program of Zerenex™, the Company,s ... serum phosphorus levels, or hyperphosphatemia, in patients with end-stage ... registration program, which is being conducted pursuant to a ...
... NEW HAVEN, Conn., Sept. 19, 2011 The U.S. ... of allowance related to Cenestra Health,s high-purity omega-3 fatty ... claims cover a range of high-purity omega-3 formulations including ... Cenestra Health was issued U.S. Patent No. ...
... 16, 2011 Generex Biotechnology Corporation ( www.generex.com ... Napolii, from University Campus Bio-Medico in Rome, Italy, ... on Generex Oral-lyn™ buccal insulin spray on September ... Study of Diabetes (EASD) annual meeting in Lisbon, ...
Cached Biology Technology:Keryx Biopharmaceuticals Announces Completion of Patient Enrollment in Zerenex™ (Ferric Citrate) Phase 3 Long-Term Study 2Keryx Biopharmaceuticals Announces Completion of Patient Enrollment in Zerenex™ (Ferric Citrate) Phase 3 Long-Term Study 3Keryx Biopharmaceuticals Announces Completion of Patient Enrollment in Zerenex™ (Ferric Citrate) Phase 3 Long-Term Study 4Cenestra Health Issued Notice of Allowance: Expands Patent Range of High-Purity Omega-3 Fatty Acid Formulations 2Cenestra Health Issued Notice of Allowance: Expands Patent Range of High-Purity Omega-3 Fatty Acid Formulations 3Generex Makes Podium Presentation of Clinical Data on Generex Oral-lyn™ at European Association for the Study of Diabetes Annual Meeting 2Generex Makes Podium Presentation of Clinical Data on Generex Oral-lyn™ at European Association for the Study of Diabetes Annual Meeting 3Generex Makes Podium Presentation of Clinical Data on Generex Oral-lyn™ at European Association for the Study of Diabetes Annual Meeting 4
(Date:4/17/2015)... Increasing adoption in ... to drive biometric systems market in ... According to a recently released TechSci Research ... biometric systems market in Saudi Arabia ... CAGR of over 22% through 2020. The market ...
(Date:4/14/2015)... , April 14, 2015  HYPR Corp. ... Online (FIDO ® ) Alliance tm , an ... FIDO members commit to share technology and collaborate ... that are interoperable, more secure and private, and ... biometric identity verification that protects sensitive user information ...
(Date:4/14/2015)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... the growing mobile commerce market, announces that its Wocket® ... York Design Awards under the category  ,Product Design – ... Awards are part of a global multi-disciplinary awards program. ... the marketplace, industry and judging panel. Winners will be ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3
... by eating the leaves of an invasive tree that soaks ... down water loss in the Southwestern United States. Two ... U.S. Geological Survey and the U.S. Department of Agriculture, have ... result from using Asian beetles for the biological control of ...
... WEST LAFAYETTE, Ind. - A Purdue University scientist and ... improved plant growth regulators that are expected to be ... of horticulture, said the growth inhibitors block the transport ... the plant, controls growth processes. Current growth regulators that ...
... whose work has overtones of Indiana Jones as they ... that could become the source of life-saving new medicines, ... international agreement on biodiversity will affect their work. That,s ... News (C&EN), ACS,s weekly newsmagazine. C&EN Associate ...
Cached Biology News:Scientists study control of invasive tree in western US 2Scientists study control of invasive tree in western US 3New growth inhibitors more effective in plants, less toxic to people 2
... new FLA-5000 imaging system allows ... samples as large as 40 ... low as 25 microns. This ... protein electrophoresis in the proteomics ...
General description: MaxiSorp TM surface is ideal for arraying molecules with mixed hydrophilic/hydrophobic domains such as proteins ID clarifier: Maxisorp(tm) with lid...
... The Staccato Series of systems provide ... today's drug discovery, genomics, proteomics and ... available in three base configurations; Mini ... Systems Series. All Staccato Application ...
... Workstation fully automates pharmaceutical sample preparation ... sample transfer, mixing and dilutions. Capabilities ... detection. The Prelude performs these functions ... Part 11. The Prelude performs ...
Biology Products: