Navigation Links
Advanced light source provides a new look at vanadium dioxide
Date:10/23/2013

Graphene may command the lion's share of attention but it is not the only material generating buzz in the electronics world. Vanadium dioxide is one of the few known materials that acts like an insulator at low temperatures but like a metal at warmer temperatures starting around 67 degrees Celsius. This temperature-driven metal-insulator transition, the origin of which is still intensely debated, in principle can be induced by the application of an external electric field. That could yield faster and much more energy efficient electronic devices.

"If the origin of this metal-insulator transition is electronic, the application of an electric field should trigger the transition on a picosecond or faster time-scale," says Nagaphani Aetukuri at the IBM-Stanford Spintronic Science and Applications Center (SpinAps). "This would be the basis for an ultrafast electronic switch, in which devices would be activated so quickly that very little energy would be lost through dissipation."

To determine the origin of the metal-insulator transition of vanadium dioxide, Aetukuri and a collaboration of researchers led by Stuart Parkin, of SpinAps and the IBM Almaden Research Center and Hermann Drr of the SLAC National Laboratory, studied thin films of the material at Berkeley Lab's Advanced Light Source (ALS). Using ALS beamline 4.0.2, an undulator beamline that can provide soft X-rays with variable linear polarization, they performed a series of strain-, polarization- and temperature-dependent X-ray absorption spectroscopy tests, in conjunction with X-ray diffraction and electrical transport measurements.

"Our results outlined the electronic properties that govern the metal-insulator transitions in vanadium dioxide and identified for the first time the respective roles of the Pi-symmetry and delta-symmetry electron orbitals," Aetukuri says. "We believe that the metallic phase of vanadium dioxide can be stabilized by populating the Pi-Symmetry orbitals
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Celladon Corporation Announces Publication of Long Term Follow-Up Results from the MYDICAR CUPID 1 Trial in Advanced Heart Failure
2. Discovery Meets Recovery in New Cedars-Sinai’s Advanced Health Sciences Pavilion Designed by HOK
3. Advanced Biologics Opens New and Expanded Headquarters in Carlsbad, California
4. Advanced Care Veterinary Services Proves Stem Cell Therapy May Be the Best Weapon in Fighting Pet Pain Due to Arthritis
5. Advanced Tissue Services Offering Discounts on Bio-specimens Utilized in Academic Research
6. 2013 NASA Advanced Technology Phase I Concepts Selected For Study
7. Primary Progression-Free Survival Endpoint Met in Phase III Study of Nintedanib Plus Docetaxel in Second-Line Advanced NSCLC
8. Syngenta Opens Unique $72 Million Advanced Crop Lab
9. Study: FOLFIRINOX Followed by Chemoradiation Shows Substantial Activity in Locally Advanced Pancreatic Cancer
10. Amphora Research Systems welcomes Advanced Polymer Monitoring Technologies
11. Photonics-Enabled Tools for Forensic Investigations to be Advanced at SPIE DSS
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Advanced light source provides a new look at vanadium dioxide
(Date:10/18/2014)... 2014 The Asia-Pacific Liquid Crystal on ... concerned market in Asia-Pacific with analysis and forecast of ... 2013, and is expected to reach $380.0 million by ... 2018. , Browse through the TOC of the Asia-Pacific ... the in-depth analysis provided. This also provides a glimpse ...
(Date:10/18/2014)... The Biomass Power industry has ... to 2014. The industry's expansion has been propelled in ... encouraged the use of biomass power. Furthermore, the majority ... require local utilities to generate electricity from renewable power ... campaigning for green technology also influenced industry performance by ...
(Date:10/18/2014)... The report " Cloud Analytics Market [Cloud BI; ... Video; Predictive Analytics: Global Advancements, Delivery Models, Market ... - 2018) ", defines and segments the global ... an in-depth analysis and forecasting of market sizes. ... market, various restraints, and opportunities impacting it along ...
(Date:10/17/2014)... UT Arlington engineering professors have received a $451,781 Air ... material surface at the micro- and nano-scale level that ... Haiying Huang, professor of Mechanical and Aerospace Engineering, said ... more efficient than taking X-rays of an aircraft,s wing., ... early stages when we look at it on this ...
Breaking Biology Technology:The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 2Biomass Power in the US Industry Market Research Report from IBISWorld Has Been Updated 3Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 2Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 3Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 4Cloud Analytics Market (by Cloud Business Intelligence & Predictive Analytics) Expected to Cross $16.52 Billion by 2018 - New Report by MarketsandMarkets 5UT Arlington project to detect possible damages in aircraft parts early in process 2
... are developing a new type of computer memory that ... use far less power than flash memory devices. ... a material that switches polarity when electric fields are ... "It,s in a very nascent stage," said doctoral ...
... 27, 2011 Neogen Corporation (Nasdaq: NEOG ) ... FY 2012, which ended Aug. 31, increased 6.5% to $45,697,000, ... current year,s revenue increase is almost entirely comprised of products ... quarter net income increased 3.1% from the prior year to ...
... Circassia Ltd, a specialty biopharmaceutical company focused ... results showing that its ToleroMune® hay fever vaccine ... on placebo.  The treatment was extremely well tolerated. ... phase II study conducted in 50 hay fever ...
Cached Biology Technology:New 'FeTRAM' is promising computer memory technology 2Neogen Reports First Quarter Revenue and Net Income Increases 2Neogen Reports First Quarter Revenue and Net Income Increases 3Neogen Reports First Quarter Revenue and Net Income Increases 4Neogen Reports First Quarter Revenue and Net Income Increases 5Circassia's Hay Fever Treatment Improves Patients' Allergy Symptoms in Phase II Clinical Trial 2Circassia's Hay Fever Treatment Improves Patients' Allergy Symptoms in Phase II Clinical Trial 3
(Date:10/15/2014)... a non-traditional biophysics textbook and it describes how life ... of discovery into biological systems and provides an understanding ... is about how our genes make proteins that control ... cells in an organism. It quantifies the principles of ... be found on both large and small scales. The ...
(Date:10/15/2014)... be awarded the 44th Rosenstiel Award for Distinguished Work ... research exploring the mechanisms of genomic instability and its ... is the second alumnus to win the Rosenstiel Award; ... 2003. , Alt is the Charles A. Janeway Professor ... School and an investigator at the Howard Hughes Medical ...
(Date:10/14/2014)... have sequenced the house fly genome for the first ... from an insect that thrives in pathogen-rich dung piles ... in the journal Genome Biology , will increase ... how flies quickly adapt to resist insecticides, which could ... (Musca domestica) carry and transmit more than 100 human ...
Breaking Biology News(10 mins):New book about life as seen from physics 2Brandeis awards 44th Rosenstiel Award to pioneering geneticist Fred Alt 2House fly genome reveals expanded immune system 2
... choice but to adapt to them. Plants have to do ... unusual strengths, accustomed as they are to living in a ... on this capacity to adapt, researcher Ms Lur Epelde used ... current level of contamination in the soil, caused by human ...
... who understand the geological age of the Earth (4.5 billion ... evolution, according to a University of Minnesota study published in ... The finding could give educators a new strategy for teaching ... rather than biological science classes. Researchers Sehoya Cotner and ...
... of large mammals in India by the Wildlife Conservation ... country,s protected area system and human cultural tolerance for ... elephants, and other large mammals. According to ... in the midst of rapid economic growth will require ...
Cached Biology News:Plants in mining areas can cure soil affected by contamination in very short time 2Plants in mining areas can cure soil affected by contamination in very short time 3Students' perceptions of Earth's age influence acceptance of human evolution, says U of Minn. study 2India's shrinking animal ark needs more parks, corridors 2
assays for phosphatase, lipase, nucleoside triphosphatases (ATPase, GTPase etc). HTS and follow up studies for phosphatase inhibitors. Quantitation of phosphate content in protein, lipids, and DNA....
EnzChek cellulase substrate *blue fluorescent, 339/452...
... for sizing single-stranded RNA ranging from 0.5 kb to ... ladder consists of nine bands in even increments (0.5 ... kb) to simplify size estimation. The 1.5 kb band ... orientation and identification of RNA bands on the gel. ...
...
Biology Products: