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:11/24/2014)... AMSTERDAM , November 24, 2014 ... free online on ScienceDirect   Elsevier , ... and services, is pleased to announce the launch of the ... : Current Opinion in Food Science ... will provide specialists with a new platform to keep ...
(Date:11/24/2014)... Dallas, Texas (PRWEB) November 24, 2014 ... China Adipic Dihydrazide Industry is a professional and ... It provides Adipic Dihydrazide information, like its definition, ... as industry overview. This report covers the international ... as global (such as the US, Europe, Asia, ...
(Date:11/23/2014)... Francis, WI (PRWEB) November 23, 2014 ... manufacturer and supplier of fine chemical ingredients to ... announced the launch of its new website, Apiscent.com. ... description of Apiscent Labs, clean design, easy navigation, ... that make Apiscent Labs stand out. ...
(Date:11/22/2014)... Colo. (PRWEB) November 21, 2014 ... proprietary cloud based analytics and scientific testing methodologies relating ... commitment for a $750,000 line of credit from an ... extremely pleased to have secured this commitment from one ... Executive Officer of CannLabs. “This capital will help accelerate ...
Breaking Biology Technology:Elsevier Announces Launch of New Journal: Current Opinion in Food Science 2Elsevier Announces Launch of New Journal: Current Opinion in Food Science 3Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 2Adipic Dihydrazide Industry 2019 Research Forecasts on Worldwide, China Regions Now Available at ReportsnReports.com 3CannLabs Secures $750,000 Line Of Credit 2
... desktops, laptops, MP3 players and smartphones are a likely ... digital audio (or video) programs are delivered via ... a range of devices for on-demand listening. , ... consumers for a variety of reasons providing an ...
... Madison, Wis. - The U.S. District Court for ... injunction against Abbott Laboratories , preventing the pharmaceutical company ... infringe on a genotyping patent held by Innogenetics , ... comes after the court upheld a $7 million damage verdict ...
... - When it comes to innovation, American Family Insurance's ... , Chapman The direction comes from within, and ... it up with a familiar phrase: nothing ventured, nothing gained. ... established a venture program modeled after employee-driven, quality-control programs. ...
Cached Biology Technology:Podcasts time, place, and player shifted media 2Podcasts time, place, and player shifted media 3Podcasts time, place, and player shifted media 4CIO Leadership Series: Byrne Chapman, American Family Insurance 2CIO Leadership Series: Byrne Chapman, American Family Insurance 3CIO Leadership Series: Byrne Chapman, American Family Insurance 4
(Date:11/18/2014)... , Nov. 17, 2014   ... EMC collaborate to develop The Partners Data Lake, ... The Partners Data Lake will allow researcher and ... diagnostics, treatment and the lives of patients ... and clinical activities across the Partners system, breaking ...
(Date:11/18/2014)... Nov. 18, 2014   EyeLock Inc. , ... and MorphoTrust USA (Safran), a leading ... announced a strategic partnership to offer comprehensive biometric ... administration (MVA), airport screening and financial services markets. ... MorphoTrust serves consumers through a nationwide network of ...
(Date:11/12/2014)... BEACH GARDENS, Fla. , Nov. 12, 2014 /PRNewswire/ ... solutions, announced today that its U.are.U ® fingerprint ... retail bakery chain in Central Mexico ... in June 2014 to eliminate payroll issues caused by ... Prior to installing the U.are.U fingerprint readers, Montparnasse relied ...
Breaking Biology News(10 mins):Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2
... affecting up to 70 percent of cancer patients, depending on ... loss of body weight that is independent of food intake. ... suffering from cancers of the digestive tract and the lungs. ... and skeletal muscle. Muscle loss leads to weakness and immobility ...
... from the South African toothbrush tree inactivates a drug ... Tuberculosis causes more deaths worldwide than any other bacterial ... resistance strains are emerging due, in part, to non-compliance ... 50 years old and alternatives are needed to the ...
... hair and eye colour from modern forensic samples can also ... a new study published in BioMed Central,s open access journal ... able to reconstruct hair and eye colour from teeth up ... (1881 to 1943) confirming his blue eyes and blond hair. ...
Cached Biology News:Liver controls wasting in cancer 2Medicinal toothbrush tree yields antibiotic to treat TB in new way 2