Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers Take Magnetic Waves for a Spin

30.01.2014
Researchers at New York University have developed a method for creating and directing fast moving waves in magnetic fields that have the potential to enhance communication and information processing in computer chips and other consumer products.

Their method, reported in the most recent issue of the journal Nanotechnology, employs “spin waves,” which are waves that move in magnetic materials.

Physically, these spin waves are much like water waves—like those that propagate on the surface of an ocean. However, with a purpose akin to that of electromagnetic waves (i.e., light and radio waves), spin waves can efficiently transfer energy and information from place to place.

“Spin waves hold tremendous promise in improving the functionality of a range of technologies,” says Andrew Kent, a professor in NYU’s Department of Physics and one of the paper’s co-authors. “Our results mark another vital step in harnessing a resource that is faster and more energy efficient that what we rely on today.”

Currently, electromagnetic waves in antennas can be converted into spin waves. However, the resulting spin waves have a long wavelength and propagate slowly. In contrast, short-wavelength spin waves can move over greater distances, more quickly, and with less energy, and thus present the possibility of improving a range of communications and electronic devices.

Yet, scientists have had difficulty in creating such spin waves. To overcome this obstacle, the NYU researchers developed “spin torque nano-oscillators” (STNO)—nanoscale devices that can convert a direct current into spin waves. They showed that these oscillators can be arranged in arrays to direct the spin wave energy, much the way antennas are used to direct electromagnetic waves.

Crucially, they developed a method that allows the spin waves to navigate in specific patterns and directions throughout a magnetic material. Their idea relies on the interference of waves and controlling the interference to produce specific wave propagation patterns.

The study’s other authors were Ferran Macià, a research scientist at the University of Barcelona and an NYU post-doctoral fellow at the time of the study, and Frank Hoppensteadt, a professor emeritus at NYU’s Courant Institute of Mathematical Sciences.

The research was supported by a Marie Curie International Outgoing Fellowship (253214), a grant from the Army Research Office (W911NF-08-1-0317), and Neurocirc LLC.

James Devitt | Newswise
Further information:
http://www.nyu.edu

More articles from Materials Sciences:

nachricht Melting solid below the freezing point
23.01.2017 | Carnegie Institution for Science

nachricht An innovative high-performance material: biofibers made from green lacewing silk
20.01.2017 | Fraunhofer-Institut für Angewandte Polymerforschung IAP

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Scientists spin artificial silk from whey protein

X-ray study throws light on key process for production

A Swedish-German team of researchers has cleared up a key process for the artificial production of silk. With the help of the intense X-rays from DESY's...

Im Focus: Quantum optical sensor for the first time tested in space – with a laser system from Berlin

For the first time ever, a cloud of ultra-cold atoms has been successfully created in space on board of a sounding rocket. The MAIUS mission demonstrates that quantum optical sensors can be operated even in harsh environments like space – a prerequi-site for finding answers to the most challenging questions of fundamental physics and an important innovation driver for everyday applications.

According to Albert Einstein's Equivalence Principle, all bodies are accelerated at the same rate by the Earth's gravity, regardless of their properties. This...

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Breaking the optical bandwidth record of stable pulsed lasers

24.01.2017 | Physics and Astronomy

Choreographing the microRNA-target dance

24.01.2017 | Life Sciences

Spanish scientists create a 3-D bioprinter to print human skin

24.01.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>