Navigation Links
Nature of bonding determines thermal conductivity
Date:5/3/2011

Jlich/Aachen, 3 May 2011 - Optical data carriers such as DVDs, Blu-rays and CD-RWs store data in layers of so-called "phase change materials". In the future, these materials will enable the development of fast, non-volatile and energy-saving main memories. A prerequisite for this is a low thermal conductivity. Phase change materials display a surprisingly low thermal conductivity even in the crystalline state. This is described by an international research team including scientists from Jlich and Aachen in the latest edition of the respected journal Advanced Functional Materials (DOI: 10.1002/adfm.201002274). Their findings will facilitate a targeted search for materials with the desired properties.

Phase change materials are among the favourite candidates for developing a "universal memory", which is as fast as DRAM (dynamic RAM), has high storage density, is always ready for use and does not lose data even when inadvertently turned off. The data is stored in tiny areas of different electrical resistance, which are written to by heating with the aid of electric pulses. In doing so, the atomic ordering of the material and its electrical resistance is changed.

When heated, phase change materials switch from the unordered (amorphous) to the ordered (crystalline) state, which leads to a change in their physical properties. This feature has been exploited by industry for many years in optical data carriers such as DVDs, Blu-rays and CD-RWs. By means of a laser, the atomic structure and thus the optical properties are changed in minute areas of the discs. This allows bits to be written to the disc and be read out again by a laser.

"In order to produce energy-saving and tightly packed electronic memories, it is important when the data are written to the disc that the electrical resistance is significantly changed but that the energy remains as localized as possible," explains Dr. Raphal Hermann from the Jlich Centre for Neutron Scie
'/>"/>

Contact: Angela Wenzik
a.wenzik@fz-juelich.de
49-246-161-6048
Helmholtz Association of German Research Centres
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. DOE JGI Director Eddy Rubin highlights the genomics of plant-based biofuels in the journal Nature
2. Natures Premium(R) Brand First Fresh Pork in North America to Carry DNA TraceBack(R) Seal of Authenticity
3. James L. Wittliff, Ph.D., FACB, to Present Predicting Breast Cancer Outcome with Gene Expression Signatures on the Ziplex(R) System at the Association for Molecular Pathology Conference, October 30
4. Genetic clock makers at UC San Diego publish their timepiece in Nature
5. MySignatureBook Certified Compliant With SAFE-BioPharma Digital Standard(TM)
6. Webcast Alert: Regulus Therapeutics, Alnylam Pharmaceuticals and Isis Pharmaceuticals Announce New Nature Publication on miR-21 Conference Call
7. Nature Medicine study shows Peregrines bavituximab can cure lethal virus infections
8. Research Published in Nature Medicine Shows Disruption of Chemokine Interactions Inhibits Atherosclerosis in Mice
9. Data Published in Nature Cell Biology Reveal Novel Function of Drug Target EpCAM in Cancer Cell Signalling
10. Light-speed nanotech: Controlling the nature of graphene
11. Nature Reviews Publishes Article About Jennerexs Multi-Mechanistic Cancer Therapeutic
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/24/2015)... 2015 /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ) ... supplier of bio-succinic acid used to produce a ... applications that Bayer MaterialScience has begun commercializing.    ... eco, a series of bio-based waterborne polyurethane ... as 65%.  IMPRANIL ® eco has been ...
(Date:4/24/2015)... -- Navitas Life Sciences is delighted to announce the appointment of ... Services. Shalabh is a proven leader in Life Science consulting ... as well as a Strategy consultant at Accenture. ... ... to welcome Shalabh into this critical role and also as ...
(Date:4/23/2015)... Marshall, MN (PRWEB) April 24, 2015 ... agreement with Advanced Birthright Nutrition® (ABN) for the exclusive ... Milk Cup. The new technology is a new in-line ... swine producers by allowing them to move supplementation milk ... running. , “This technology lets producers get ...
(Date:4/23/2015)... MISSISSAUGA, ON , April 23, 2015 /CNW/ ... major sustainable packaging award from North ... Packaging,s Brandcheck Competitor Comparison won Silver in the ... Awards. The Brandcheck "Competitor Comparison" is ... set of North American and Global peers. This ...
Breaking Biology Technology:Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 2Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 3Bayer MaterialScience Names BioAmber As Its Supplier For New Product Line - Bio-succinic acid forms backbone of innovative new bio-based polyurethanes for textiles 4Shalabh Kumar Joins Navitas Life Sciences to Lead their Clinical and Regulatory Services Teams 2Ralco Acquires License to Birthright™ Moveable Milk Cup 2
... CASTRES, France , July 2, 2010 ... Officer at Pierre Fabre,Group starting September 1, 2010 . , ... Until now, Olivier Bohuon ... division. As such, he ran the,group,s entire pharmaceutical activities from Chicago ...
... starts from a roll of flexible foil onto which the ... finally rolled up onto the coil again. Encapsulated and ready-to-use ... to the customer,s specification. As the whole process from feedstock ... paves the way towards mass production of solar cells and ...
... BELGRADE, Mont. , July 1 ... developer of anti-infective coatings for medical applications and revolutionary ... the appointment of three seasoned financial experts to its ... R. Frank whose asset management experience spans 31 ...
Cached Biology Technology:Olivier Bohuon Joins Pierre Fabre 2Mass production of polymer solar cells is within reach 2Bacterin International Appoints Three New Members to Its Board of Directors 2Bacterin International Appoints Three New Members to Its Board of Directors 3Bacterin International Appoints Three New Members to Its Board of Directors 4
(Date:4/2/2015)... -- Fingerprint Cards (FPC) has received an ... distributor World Peace Industrial Group (WPI), part of WPG ... major part of the shipments will take place during ... manufacturers in China . The order ... revenue guidance of + 1 000 MSEK for 2015.  ...
(Date:3/31/2015)... , March 31, 2015   Guidepoint , a ... of the Post-Surgical Pain Management TRACKER, part of the ... usage trends in the medical device and therapeutics markets. ... data including treatment volumes, market share, and adoption rates ... associated with joint surgery. The Post-Surgical Pain ...
(Date:3/24/2015)... 24, 2015 Research and Markets ( http://www.researchandmarkets.com/research/kvdtcw/face_and_voice ) ... - Global Strategic Business Report" report to their offering. ... Biometrics in US$ Thousands by the following Segments: Face Biometrics, and ... Canada , Japan , ... Middle East & Africa , and ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 110 Million 2Guidepoint Launches Post-Surgical Pain Management TRACKER 2Guidepoint Launches Post-Surgical Pain Management TRACKER 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 2Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 3Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 4Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 5Face and Voice Biometrics - Global Strategic Business Report 2015: Face Recognition Gains Prominence in Immigration Control 6
... research findings suggest that an experimental ultrasensitive medical imaging ... "nanocages" might enable both the early detection and treatment ... laser pulses through the skin to detect hollow nanocages ... gold and silver - that are injected into the ...
... JOLLA, CA April 12, 2010 Scientists at The ... human embryonic stem cells are so difficult to culture in ... the field closer to the day when stem cells can ... being published in the journal Proceedings of the National ...
... OHIO -- April 12, 2010 For millions of Americans ... onset typically in adulthood) the associated risk of cancer is ... excess insulin whether naturally produced by the body or ... incidence of some common cancers. With the ...
Cached Biology News:Ultrasensitive imaging method uses gold-silver 'nanocages' 2Scripps Research scientists solve mystery of fragile stem cells 2Scripps Research scientists solve mystery of fragile stem cells 3Case Western Reserve team discovers 'smart' insulin molecule 2
RABBIT ANTI HUMAN CYTOCHROME P450 1A1/2 Immunogen: Purified human CYP1A2 expressed in E.Coli ...
... cloning of BAC (100+kb), fosmid (40kb), and ... stability than any othe BAC vector. On ... yields and easy recombinant DNA purification. Available ... (pSMART VC) vectors for the highest insert ...
... Error-free cloning of BAC (100+kb), fosmid ... Greater insert stability than any othe BAC ... for high yields and easy recombinant DNA ... or transcription-free (pSMART VC) vectors for the ...
RABBIT ANTI GLYCINE...
Biology Products: