Navigation Links
New knowledge about thermoelectric materials could give better energy efficiency

Thermoelectric materials can be assembled into units, which can transform the thermal difference to electrical energy or vice versa electrical current to cooling. An effective utilization requires however that the material supplies a high voltage and has good electrical, but low thermal conductivity.

- The new knowledge explains exactly why some thermoelectric materials can have the desired low thermal conductivity without degrading the electrical properties. This can be crucial for the conversion of wasted heat, for example, from vehicle exhaust emissions. Leading car manufacturers are now working to develop this possibility and the first models are close to production. The technology is expected to give the cars considerably improved fuel economy, explains Bo B. Iversen, Professor at iNANO at the University of rhus. The new knowledge can also contribute to the development of new cooling methods, so that one avoids the most common, but very environmentally damaging greenhouse gas (R-134a). All of which is a gain for the environment.

In the Nature Materials article the researchers have studied one of the most promising thermoelectric materials in the group of clathrates, which create crystals full of 'nano-cages'.

- By placing a heavy atom in each nano-cage, we can reduce the crystals' ability to conduct heat. Until now we thought that it was the heavy atoms random movements in the cages that were the cause of the poor thermal conductivity, but this has been shown to not be true, explains Asger B. Abrahamsen, senior scientist at Ris-DTU.

The researchers have used the technique of neutron scattering, which gives them opportunity to look into the material and see the atoms' movements.

- Our data shows that, it is rather the atoms' shared pattern of movement that determines the properties of these thermoelectric materials. A discovery that will be significant for the design of new materials that utilize energy even better, explains Kim Lefmann, associate professor at the Nano-Science Center, the Niels Bohr Institute at the University of Copenhagen.


Contact: Kim Lefmann
University of Copenhagen

Related biology technology :

1. Aureus Pharma Releases New Unified Knowledge Database
2. Knowledge Enterprises, Inc. and The Institute for Orthopaedics(TM) Release The 2007-2008 Orthopaedic Industry Annual Report
3. New Online Learning Tool Fills the Knowledge Gap on Botulinum Toxin Type B for Cervical Dystonia
4. Aureus Pharma Announces Renewal and Expansion of Licensing Agreement With Bristol-Myers Squibb for its AurSCOPE Knowledge Databases
5. Spanish Research Consortium Signs Four-Year Renewal Deal for ISI Web of Knowledge
6. Sigma-Aldrich and Ingenuity Systems Announce Partnership to Create E-Commerce Search Solution Based on Biological Knowledge
7. Swedish Neuroscience Institute and Institute for Systems Biology in Seattle Form Alliance to Learn More about Brain Diseases
8. Video: Moms Raise Red Flag About the Dangers of Widely Undiagnosed Bleeding Disorder
9. Shire Re-Launches, a Virtual Road Map Providing Information, Tools and Practical Tips About Attention Deficit Hyperactivity Disorder (ADHD)
10. UCSF and YouTube Launch Channel Dedicated to Educating the Public About Neurodegenerative Diseases
11. CEO Addresses Fort Worth Business Leaders About Developing Pandemic and Business Continuity Plans
Post Your Comments:
(Date:11/25/2015)... 25, 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ:  AEZS; ... and prospects remain fundamentally strong and highlights the ... recently received DSMB recommendation to continue the ZoptEC ... of the final interim efficacy and safety data ... in men with heavily pretreated castration- and Taxane-resistant ...
(Date:11/24/2015)... , Nov. 24, 2015  Asia-Pacific (APAC) ... research organisation (CRO) market. The trend of outsourcing ... lower margins but higher volume share for the ... and scale, however, margins in the CRO industry ... (CRO) Market ( ), finds that ...
(Date:11/24/2015)... Mass. (PRWEB) , ... November 24, 2015 , ... ... to maintain healthy metabolism. But unless it is bound to proteins, copper is ... of Health (NIH), researchers at Worcester Polytechnic Institute (WPI) will conduct a systematic ...
(Date:11/24/2015)... ... November 24, 2015 , ... This fall, global software solutions leader SAP and ... to develop and pitch their BIG ideas to improve health and wellness in their ... votes to win the title of SAP's Teen Innovator, an all-expenses paid trip to ...
Breaking Biology Technology:
(Date:11/9/2015)... Nov. 9, 2015  Synaptics Inc. (NASDAQ: SYNA ... announced broader entry into the automotive market with a ... the pace of consumer electronics human interface innovation. Synaptics, ... ideal for the automotive industry and will be implemented ... Europe , Japan , ...
(Date:10/29/2015)... Va. , Oct. 29, 2015 Daon, ... today that it has released a new version of ... customers in North America have ... IdentityX v4.0 also includes a FIDO UAF certified ... are already preparing to activate FIDO features. These customers ...
(Date:10/27/2015)... , Oct. 27, 2015 In the present ... of concern for various industry verticals such as banking, ... to the growing demand for secure & simplified access ... ,sectors, such as hacking of bank accounts, misuse of ... equipment such as PC,s, laptops, and smartphones are expected ...
Breaking Biology News(10 mins):