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:12/17/2014)... (PRWEB) December 17, 2014 Gene ... that it has entered into a technology access ... (ADM) to apply DNA2.0’s proprietary protein engineering technology, ... process. , “We are extremely excited that the ... platform. This proprietary bioengineering technology has now ...
(Date:12/17/2014)... SOUTH SAN FRANCISCO, Calif. , Dec. 17, ... positive results of a Phase 2 study evaluating ... for the treatment of patients with severe, chronic ... the current standard of care, including topical steroids ... endpoint was percent change in Visual Analog Scale ...
(Date:12/15/2014)...  GlassesOff Inc. (OTCBB: GLSO) announced today the appointment ... director of the Company,s Board of Directors. ... its CEO until its acquisition by Stanley Black ... Recognized as the inventor of the first Wi-Fi-based Active ... -based RFID solutions focused on improving operational efficiency, safety ...
(Date:12/13/2014)... (PRWEB) December 12, 2014 Clarassance, a ... announced its new name: Therabron Therapeutics , Inc. ... and bronchioles (a type of structure in the lungs ... company’s mission to develop novel protein therapeutics for the ... directors decided to change the name to mark the ...
Breaking Biology Technology:ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4AeroScout Founder Joins GlassesOff's Board of Directors 2AeroScout Founder Joins GlassesOff's Board of Directors 3Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2
... Inc. (Nasdaq: ONXX ) today announced that ... Care Conference on Wednesday, November 12,at 10:00 a.m. ... access a live webcast of the presentation on ... recommended that listeners log on 15 minutes early ...
... In a survey of 100 infectious,disease specialists ... as standing out above other companies at the ... best overall image,in infectious disease. GlaxoSmithKline, Pfizer and ... image among the specialists., The 2008 ICAAC/IDSA ...
... Shire plc,(LSE: SHP, NASDAQ: SHPGY), the global ... all pending litigation in,connection with former dissenting shareholders ... same price of $37 per share originally,offered to ... July 2005 merger, plus,interest., Background to the ...
Cached Biology Technology:According to AlphaDetail, Inc. Merck and Tibotec Therapeutics Lead Among Infectious Disease Specialists 2Shire Successfully Settles Former TKT Shareholder Appraisal Rights Litigation 2Shire Successfully Settles Former TKT Shareholder Appraisal Rights Litigation 3
(Date:12/11/2014)... 2014  Data Sciences International (DSI), the global ... new series of digital telemetry implants to meet ... series, part of the PhysioTel™ Digital platform, was ... physiologic data when incorporating functional endpoints into repeat-dose ... toxicology studies has evolved from short ECG strips ...
(Date:12/10/2014)... Dec. 9, 2014 CIE San Diego has ... provides the connective tissue that enhances care coordination among ... easily share client-level information; earned a second $1 million ... organizations serving seniors aging in community and; will be ... December 11 th 4-6p. CIE San ...
(Date:12/5/2014)... -- Tute Genomics, a leader in cloud-based solutions for genome ... led by UK-based Eurovestech. Peak Ventures and a number ... "We are at a pivotal time in ... seeks new approaches for the diagnosis, treatment and prevention ... and CEO of Tute Genomics. "One of the main ...
Breaking Biology News(10 mins):New telemetry implants expected to change how large animal toxicology studies are conducted 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 2Tute Genomics Raises $2.3 Million to Scale Up Cloud-Based Genome Analytics and Accelerate Personalized Medicine 3
... is developing a comprehensive data system that can be ... providing them with access to chemical toxicity information. ... building the "automated profiling system" from existing bioassay data ... can help scientists who are seeking information on chemicals ...
... (November 14, 2013)Provocative new research shows that the ... cases of malaria in 2010, may be "rapidly evolving" to ... in millions of Africans, scientists reported today at the annual ... (ASTMH). In large swaths of sub-Saharan ...
... Reserve University and Cleveland Clinic Lerner Research Institute have ... over 100 million cases of malaria annuallychanges that may ... considered resistant, susceptible to infection. Peter A. Zimmerman, ... Case Western Reserve School of Medicine, and David Serre, ...
Cached Biology News:Toxicity database under development at Rutgers-Camden 2New research finds potential risk for millions in Africa believed resistant to vivax malaria 2New research finds potential risk for millions in Africa believed resistant to vivax malaria 3New research finds potential risk for millions in Africa believed resistant to vivax malaria 4Vivax malaria may be evolving around natural defense 2Vivax malaria may be evolving around natural defense 3
... General description: The Costar strip ejector is ... removal of Costar strips from their holder. ... product number, created to easily match Cornings ... please order under the old Sigma-Aldrich number ...
Sigmas E-TOXATE (Limulus Amebocyte Lysate) test kits are intended for the detection and semiquantitation,of endotoxins for research purposes....
... These versatile enclosures ... with nitrogen or other ... a low-humidity environment. HEPA ... and ionization modules also ...
... For the professional, student, or faculty researcher, ... will accelerate your research and improve the quality ... data is the edge that researchers using LI-COR ... 10 years. The 4300 System is a third ...
Biology Products: