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.
Released by American Institute of Physics  

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.




The above story is based on materials provided by American Institute of Physics.

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


comments powered by Disqus


Related »

Light 
7/9/12 
Carnegie Mellon's Smart Headlight System Will Have Drivers Seeing Through the Rain
PITTSBURGH—Drivers can struggle to see when driving at night in a rainstorm or snowstorm, but a smart headlight system …
System 
9/9/14 

Carnegie Mellon's Smart Headlights Spare the Eyes of Oncoming Drivers
Team 
2/10/14 

NTU Showcases Expertise in UAV Technology at Singapore Airshow 2014
Mavs 
8/29/13 

TU Delft Researchers Design And Build the World’s Smallest Autopilot for Micro Aircraft
Center 
6/10/14 
A Simulated City for Automated Cars to Open at U-Michigan
ANN ARBOR—No university in the world has an automated vehicle test facility like the one that will open this …
More » 
 
© Newsline Foundation  |  About  |  Privacy Policy  |  Feedback  |  Mobile