Home  |  Top News  |  Most Popular  |  Video  |  Multimedia  |  News Feeds  |  Feedback
  Medicine  |  Nature & Earth  |  Biology  |  Technology & Engineering  |  Space & Planetary  |  Psychology  |  Physics & Chemistry  |  Economics  |  Archaeology
Top > Technology & Engineering > Power Spintronics: Producing AC Voltages… >
Power Spintronics: Producing AC Voltages by Manipulating Magnetic Fields

Published: January 3, 2013.
By American Institute of Physics
http://www.aip.org

Scientists are putting a new spin on their approach to generating electrical current by harnessing a recently identified electromotive force known as spinmotive force, which is related to the field of spintronics that addresses such challenges as improving data storage in computers. Now, a novel application of spintronics is the highly efficient and direct conversion of magnetic energy to electric voltage by using magnetic nanostructures and manipulating the dynamics of magnetization. According to a report published in the American Institute of Physics' (AIP) journal Applied Physics Letters, this conversion could be the foundation for future development of spin-based power electronics, a field the authors call "power spintronics." Their newly published results of an experimental model suggest that a power spintronics-based device may one day be a promising approach to obtaining alternating current (AC) voltages from direct current (DC) magnetic fields. The researchers demonstrated for the first time the feasibility of a device that generates a voltage based on manipulating an effective magnetic field within a nanowire that arises from width modulation. Technically such a field is not a true magnetic field, but it can be viewed as such. The team tested a one-dimensional model. It showed that DC magnetic field characteristics such as magnitude, and design parameters such as wire width, can be used to control, or "tune," the frequency and amplitude of AC current. Importantly, their results showed that a variable frequency ranging from megahertz to gigahertz can be achieved. Control and range in tuning ability are highly desirable management features in generating current. The team's results suggest that applying their spintronics approach may one day meet a variety of commercial energy demands due to control and scalability.


Show Reference »


Translate this page: Chinese French German Italian Japanese Korean Portuguese Russian Spanish


 
All comments are reviewed before being posted. We cannot accept messages that refer a product, or web site.If you are looking for a response to a question please use our another feedback page.
Related »

Risks 
8/30/11 

Learning the Lessons of Fukushima
By Massachusetts Institute of Technology
Japanese 
3/12/11 

Japan Declares Nuclear Emergency
By International Atomic Energy Agency
Technology 
7/10/14 

Sophisticated Radiation Detector Designed for Broad Public Use
By Oregon State University
German 
6/9/11 
German National Academy of Sciences Leopoldina Submits Statement on Energy Research
By Leopoldina
The German National Academy of Sciences Leopoldina has submitted an ad-hoc statement on energy research to Prof. Annette Schavan, the German Federal Minister of Education and Research. Against the …
Fusion 
2/20/13 
Potential Benefits of Inertial Fusion Energy Justify Continued R&D
By National Academy of Sciences
WASHINGTON -- The potential benefits of successful development of an inertial confinement fusion-based energy technology justify investment in fusion energy research and development as part of the long-term U.S. …
More » 
 
© Newsline Group  |  About  |  Privacy Policy  |  Feedback  |  Mobile  |  Japanese Edition