Featured Research

from universities, journals, and other organizations

Graphene provides efficient electronics cooling

Date:
July 3, 2013
Source:
Chalmers University of Technology
Summary:
A layer of graphene can reduce the working temperature in hotspots inside a processor by up to 25 percent – which can significantly extend the working life of computers and other electronics. Scientists have now shown that graphene has a heat dissipating effect on silicon based electronics.

An electronic component where a graphene layer has been placed on the hotspots.
Credit: Image courtesy of Chalmers University of Technology

A layer of graphene can reduce the working temperature in hotspots inside a processor by up to 25 percent -- which can significantly extend the working life of computers and other electronics. An international group of researchers, headed by Chalmers University of Technology in Sweden, are the first in the world to show that graphene has a heat dissipating effect on silicon based electronics.

Related Articles


"This discovery opens the door to increased functionality and continues to push the boundaries when it comes to miniaturising electronics," said Chalmers Professor Johan Liu who heads the international research project.

Modern electronic systems generate a great deal of heat, above all due to the constantly increasing demand for more and more functionality. It is important to be able to remove the heat generated in an efficient way to maintain the long life of the system. One rule of thumb is that a 10-degree Celsius increase in working temperature halves the working life of an electronics system.

During the study, the researchers focused on reducing the temperature in the small area where the electronics work most intensively -- such as inside a processor, for instance. These tiny hotspots are found in all electronics. Size wise, they are on a micro or nano scale, in other words a thousandth of a millimetre or smaller.

"The normal working temperature in the hotspots we have cooled with a graphene layer has ranged from 55 to 115 degrees Celsius. We have been able to reduce this by up to 13 degrees, which not only improves energy efficiency, it also extends the working life of the electronics."

Efficient cooling is a major challenge in many different applications, such as automotive electronics, power electronics, computers, radio base stations and in various light emitting diodes, or LED lights. In automotive electronics systems, any single device in the ignition system can pump out up to 80 W continuously and in transient stage up to 300 W (within 10 nanoseconds). LED devices can have a thermal intensity almost on a par with the sun, up to 600 W/cm2 due to their extremely small size.

Superior cooling of electronics can deliver tremendous advantages. According to a study in the USA based on data from 2006, around 50 percent of the total electricity used to run data servers goes on cooling the systems.


Story Source:

The above story is based on materials provided by Chalmers University of Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Zhaoli Gao, Yong Zhang, Yifeng Fu, Matthew M.F. Yuen, Johan Liu. Thermal chemical vapor deposition grown graphene heat spreader for thermal management of hot spots. Carbon, 2013; 61: 342 DOI: 10.1016/j.carbon.2013.05.014

Cite This Page:

Chalmers University of Technology. "Graphene provides efficient electronics cooling." ScienceDaily. ScienceDaily, 3 July 2013. <www.sciencedaily.com/releases/2013/07/130703101026.htm>.
Chalmers University of Technology. (2013, July 3). Graphene provides efficient electronics cooling. ScienceDaily. Retrieved March 27, 2015 from www.sciencedaily.com/releases/2013/07/130703101026.htm
Chalmers University of Technology. "Graphene provides efficient electronics cooling." ScienceDaily. www.sciencedaily.com/releases/2013/07/130703101026.htm (accessed March 27, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, March 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Inspectors Found Faulty Work Before NYC Blast

Inspectors Found Faulty Work Before NYC Blast

AP (Mar. 27, 2015) An hour before an apparent gas explosion sent flames soaring and debris flying at a Manhattan apartment building, injuring 19 people, utility company inspectors decided the work being done there was faulty. (March 27) Video provided by AP
Powered by NewsLook.com
Facebook Building Plane-Sized Drones For Global Internet

Facebook Building Plane-Sized Drones For Global Internet

Newsy (Mar. 27, 2015) Facebook on Thursday revealed more details about its Internet-connected drone project. The drone is bigger than a 737, but lighter than a car. Video provided by Newsy
Powered by NewsLook.com
Robot Returns from International Space Station and Sets Two Guinness World Records

Robot Returns from International Space Station and Sets Two Guinness World Records

Reuters - Light News Video Online (Mar. 27, 2015) The companion robot "Kirobo" returns to earth from the International Space Station and sets two Guinness World Records. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Residents Witness Building Explosion, Collapse

Residents Witness Building Explosion, Collapse

AP (Mar. 26, 2015) Witnesses recount the sites and sounds of a massive explosion and subsequent building collapse in the heart of Manhattan&apos;s trendy East Village on Thursday. (March 26) Video provided by AP
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:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

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