Navigation Links
Chameleon magnets: Ability to switch magnets 'on' or 'off' could revolutionize computing
Date:5/27/2011

BUFFALO, N.Y. -- What causes a magnet to be a magnet, and how can we control a magnet's behavior? These are the questions that University at Buffalo researcher Igor Zutic, a theoretical physicist, has been exploring over many years.

He is one of many scientists who believe that magnets could revolutionize computing, forming the basis of high-capacity and low-energy memory, data storage and data transfer devices.

Today, in a commentary in Science, Zutic and fellow UB physicist John Cerne, who studies magnetism experimentally, discuss an exciting advancement: A study by Japanese scientists showing that it is possible to turn a material's magnetism on and off at room temperature.

A material's magnetism is determined by a property all electrons possess: something called "spin." Electrons can have an "up" or "down" spin, and a material is magnetic when most of its electrons possess the same spin. Individual spins are akin to tiny bar magnets, which have north and south poles.

In the Japanese study, which also appears in the current issue of Science, a team led by researchers at Tohoku University added cobalt to titanium dioxide, a nonmagnetic semiconductor, to create a new material that, like a chameleon, can transform from a paramagnet (a nonmagnetic material) to a ferromagnet (a magnetic material) at room temperature.

To achieve change, the researchers applied an electric voltage to the material, exposing the material to extra electrons. As Zutic and Cerne explain in their commentary, these additional electrons -- called "carriers" -- are mobile and convey information between fixed cobalt ions that causes the spins of the cobalt electrons to align in one direction.

In an interview, Zutic calls the ability to switch a magnet "on" or "off" revolutionary. He explains the promise of magnet- or spin-based computing technology -- called "spintronics" -- by contrasting it with conventional electronics.

'/>"/>
Contact: Charlotte Hsu
chsu22@buffalo.edu
716-645-4655
University at Buffalo
Source:Eurekalert

0

GOOD

Page: 1 2 3

Related biology technology :

1. GeoVax Labs Announces Availability of 2010 Annual Report and Presidents Letter to Stockholders
2. Stanford and SanBio Announce a Clinical Trial of Cell Therapy for Stroke Disability
3. Health Diagnostic Laboratory, Inc. (HDL, Inc.) Announces Availability of Galectin-3 Testing Service in Partnership With BG Medicine
4. Quanterix Announces Publication of Novel Method Expanding Single Molecule Detection Capability
5. Cadence Pharmaceuticals Announces U.S. Launch and Availability of OFIRMEV™ (acetaminophen) Injection
6. WaferGen Announces General Availability of Quick-Turnaround SmartChip Custom Panels
7. Science advisor to the US EPA to speak to industry, academic leaders on sustainability innovations
8. Breakthrough e-display means electronics with high speed, high readability and low power usage
9. Cellectis Bioresearch Announces Availability of Research Kits Through New Online E-Store
10. Epitomics, Inc. Announces Worldwide Availability of LRRK2 Antibodies Developed in Partnership With The Michael J. Fox Foundation
11. Cord Blood America CEO Matthew Schissler Discusses Projects in China, South America, Afford-A-Cord, and Profitability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/17/2013)... ALTO, Calif. , May 17, 2013 /PRNewswire/ ... it has achieved 50% enrollment of the total ... to evaluate the safety and preliminary efficacy of ... Cells) therapy for Knee Osteoarthritis (KOA). To date ... (SAE) reported. The Phase I open ...
(Date:5/17/2013)... , May 17, 2013 /PRNewswire-iReach/ -- Aridis ... been reached with Switzerland -based ... anti-infective human monoclonal antibody (mAb) products, and technologies. ... mAb products for treatment of infections by common ... Staphylococcus aureus , Pseudomonas aeruginosa , ...
(Date:5/17/2013)... May 17, 2013 Men’s skin is biologically ... La-roche Posay ) and has been known to react more ... men may be far from puberty, other acne causing factors ... causing breakouts, and threatening skin with unsightly acne scars. Adult ... Men’s Health on how to reduce and prevent ...
(Date:5/17/2013)... RURO Inc. is pleased to ... versatile refinement to the smart management solution. , ... advanced methodical management for transgenic animal colonies, genotyping ... network-based platform provides user access with a plethora ... to emphasize streamlined tasks, such as animal relocation ...
Breaking Biology Technology:Cellular Biomedicine Group Achieves 50% Enrollment Milestone in Phase I Clinical Trial for Knee Osteoarthritis 2Aridis Pharmaceuticals Announces Acquisition of Monoclonal Antibody Products and Technologies From Kenta Biotech 2Aridis Pharmaceuticals Announces Acquisition of Monoclonal Antibody Products and Technologies From Kenta Biotech 3Adult Acne Treatment, Probiotic Action Shares New Insight on Why Men’s Skin Scars from Acne and How to Prevent It 2RURO Introduces ezColony 4.1 – The Versatile Transgenic Animal Colony Management Software 2
... VIENNA, Va., March 10 CEL-SCI Corporation (NYSE Alternext ... to launch a new manufacturing process that could allow ... to maintain their potency and thereby potentially also their ... developed by CEL-SCI may also significantly accelerate the time ...
... Take Market Share Away from Lucentis from 2012 ... Decision ResourcesWALTHAM, Mass., March 10 Decision Resources, ... firms for pharmaceutical and healthcare issues, finds that ... macular degeneration (AMD) market through 2012 will be ...
... Tolerx, Inc., today announced that DEFEND ( D urable ... arly or N ew Onset Type 1 D ... targeted immunotherapeutic, has begun enrollment of new onset autoimmune type ... cell function subsequent to the administration of otelixizumab is the ...
Cached Biology Technology:CEL-SCI Corporation to Launch Aseptic Filling for Stem Cell Produced Therapies and Other Biological Products 2CEL-SCI Corporation to Launch Aseptic Filling for Stem Cell Produced Therapies and Other Biological Products 3CEL-SCI Corporation to Launch Aseptic Filling for Stem Cell Produced Therapies and Other Biological Products 4Robust Annual Growth Through 2012 in the Age-Related Macular Degeneration Market Will Be Driven by Expanding Use of Lucentis in Europe 2Robust Annual Growth Through 2012 in the Age-Related Macular Degeneration Market Will Be Driven by Expanding Use of Lucentis in Europe 3Tolerx Expands Phase 3 'DEFEND' Trial of Otelixizumab in Europe 2Tolerx Expands Phase 3 'DEFEND' Trial of Otelixizumab in Europe 3Tolerx Expands Phase 3 'DEFEND' Trial of Otelixizumab in Europe 4
(Date:5/16/2013)... predict the stability of today,s largest ice sheets in Greenland ... years ago, for example when Earth was going through ... a high sea level due to ice sheet collapse at ... that if the world,s largest ice sheets collapsed in the ... modern, progressively warming world. , However, a new groundbreaking ...
(Date:5/16/2013)... layer lining the body,s blood vessels, is extremely ... thickness, this super-tenuous structure routinely withstands blood flow, ... a unique and highly dynamic barrier that maintains ... body,s circulatory system. , It,s also extremely adaptable. ... breached to enable immune cells to reach ...
(Date:5/16/2013)... , May 16, 2013 Integrated ... combination with a custom thin film transistor camera ... forensic quality roll image in the smallest and ... Sherlock, an Appendix F Mobile ID FAP 45, ... 95% reduction in size and weight when compared ...
Breaking Biology News(10 mins):World's biggest ice sheets likely more stable than previously believed 2Endothelium, heal thyself 2Endothelium, heal thyself 3Endothelium, heal thyself 4
... the first time, scientists have described not only the identities ... in this case, a mouse macrophage or white blood ... and change over time to a bacterial stimulus triggering the ... of the Journal of Biological Chemistry , lead author ...
... of time, the colonial hydrology of the northeastern U.S. has ... social scientists. The results, which extend as far back ... the journal Environmental Science & Technology (ES&T). ... of the past, and will lead to a better understanding ...
... / ST. PAUL (December 1, 2010) University of ... is among an international group of researchers that has ... of sexual maturation in women. Many of these genes ... energy metabolism. Prior to the multi-institutional study, only four ...
Cached Biology News:Researchers describe first functioning 'lipidome' of mouse macrophage 2Researchers describe first functioning 'lipidome' of mouse macrophage 3America's colonial hydrologic history recreated 2U of M researcher helps unlock 30 new genes responsible for early onset puberty 2
quantitation of phosphatase activity, evaluation of hits and leads from HTS...
... ISO 9001:2000 Certified USDA Research Registered ... SOP's Training AALAS Certified Technicians ... Procedures GLP Documentation Upon Request Focus ... point for all your custom immunology service ...
Request Info...
Request Info...
Biology Products: