Featured Research

from universities, journals, and other organizations

Vanadium dioxide research opens door to new, multifunctional spintronic smart sensors

Date:
February 5, 2014
Source:
North Carolina State University
Summary:
New research findings open the door to smarter sensors by integrating vanadium dioxide onto a silicon chip and using lasers to make the material magnetic. The advance paves the way for multifunctional spintronic smart sensors for use in military applications and next-generation spintronic devices.

Research from a team led by North Carolina State University is opening the door to smarter sensors by integrating the smart material vanadium dioxide (VO2) onto a silicon chip and using lasers to make the material magnetic. The advance paves the way for multifunctional spintronic smart sensors for use in military applications and next-generation spintronic devices.

VO2 is currently used to make infrared sensors. By integrating VO2 as a single crystal onto a silicon substrate, the researchers have made it possible to create infrared smart sensors, in which the sensor and computational function are embedded on a single chip. This makes the sensor faster and more energy efficient, since it doesn't have to send data to another chip to be processed. Smart sensors are also lighter than conventional ones, since separate chips aren't necessary.

"For military applications, sensor technology needs to be able to sense, manipulate, and respond to data quickly -- and this work achieves that," says Dr. Jay Narayan, John C. Fan Distinguished Chair Professor of Materials Science and Engineering at NC State and senior author of a paper describing the work.

In addition, the researchers used high-power nanosecond-pulsed laser beams to modify the VO2 and make it magnetic. This will allow the creation of spintronic smart sensors that incorporate infrared sensors and magnetic sensors on a single chip. Spintronics refers to technologies used in solid-state devices that take advantage of the inherent spin in electrons and their related magnetic momentum. The potential advantages of spintronics include higher memory capacity, faster data transfer and more computational power on a computer chip.

The paper, "Diamagnetic to ferromagnetic switching in VO2 epitaxial thin films by nanosecond excimer laser treatment," is published online in Applied Physics Letters. Lead author of the paper is R. Molaei, a Ph.D. student at NC State. Co-authors include Dr. R. Bayati, a former Ph.D. student at NC State who now works at Intel Corporation; Dr. S. Nori, a postdoctoral researcher at NC State; Dr. D. Kumar, of North Carolina A&T University; and Dr. J.T. Prater of the Army Research Office, who is also an adjunct professor at NC State. The work was supported by the National Science Foundation, under grants DMR-1304607 and DMR-0803663.


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. R. Molaei, R. Bayati, S. Nori, D. Kumar, J. T. Prater, J. Narayan. Diamagnetic to ferromagnetic switching in VO2 epitaxial thin films by nanosecond excimer laser treatment. Applied Physics Letters, 2013; 103 (25): 252109 DOI: 10.1063/1.4857155

Cite This Page:

North Carolina State University. "Vanadium dioxide research opens door to new, multifunctional spintronic smart sensors." ScienceDaily. ScienceDaily, 5 February 2014. <www.sciencedaily.com/releases/2014/02/140205091613.htm>.
North Carolina State University. (2014, February 5). Vanadium dioxide research opens door to new, multifunctional spintronic smart sensors. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2014/02/140205091613.htm
North Carolina State University. "Vanadium dioxide research opens door to new, multifunctional spintronic smart sensors." ScienceDaily. www.sciencedaily.com/releases/2014/02/140205091613.htm (accessed April 23, 2014).

Share This



More Computers & Math News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

High Court to Hear Dispute of TV Over Internet

High Court to Hear Dispute of TV Over Internet

AP (Apr. 22, 2014) The future of Aereo, an online service that provides over-the-air TV channels, hinges on a battle with broadcasters that goes before the U.S. Supreme Court on Tuesday. (April 22) Video provided by AP
Powered by NewsLook.com
Aereo Takes on Broadcast TV Titans in Supreme Court Today

Aereo Takes on Broadcast TV Titans in Supreme Court Today

TheStreet (Apr. 22, 2014) Aereo heads to the Supreme Court today to fight for its right to stream broadcast TV over the Internet -- against broadcasters who say the start-up infringes upon copyright law. TheStreet Deputy Managing Editor Leon Lazaroff explains the importance of the case in the TV industry and details what the outcome of it could mean for broadcasters and for cloud storage services -- as Aereo allows its subscribers to not just watch live TV shows but also store content to a DVR in the cloud. Video provided by TheStreet
Powered by NewsLook.com
Lytro Introduces 'Illum,' A Professional Light-Field Camera

Lytro Introduces 'Illum,' A Professional Light-Field Camera

Newsy (Apr. 22, 2014) The light-field photography engineers at Lytro unveiled their next innovation: a professional DSLR-like camera called "Illum." Video provided by Newsy
Powered by NewsLook.com
Netflix To Raise Prices For New Subscribers

Netflix To Raise Prices For New Subscribers

Newsy (Apr. 21, 2014) Netflix executives say they don't think a $1 or $2 price hike will hurt the service, and they have their sites set on overtaking HBO. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins