Featured Research

from universities, journals, and other organizations

Radiation-Resistant Chips For Sturdier Satellites

Date:
June 29, 2001
Source:
University Of California, Davis
Summary:
Space is a tough environment for electronics. A burst of radiation from a solar flare can damage a satellite's delicate circuits and knock years off its working life. Now research by a University of California, Davis, engineering student is pointing the way to more radiation-resistant microchips.

Space is a tough environment for electronics. A burst of radiation from a solar flare can damage a satellite's delicate circuits and knock years off its working life. Now research by a University of California, Davis, engineering student is pointing the way to more radiation-resistant microchips.

Anne Vandooren, a graduate student in the Department of Electrical and Computer Engineering, studied how heat, gamma rays, X-rays and proton irradiation affect microchips built with silicon-on-oxide (SOI) technology. SOI chips are used for low-power applications such as cell phones, pagers and personal organizers.

Radiation damages microchips by creating electrical charges in the insulation between transistors, said engineering professor Jean-Pierre Colinge, who supervised the project. His laboratory has previously developed ways to build SOI microchips where transistors are in less contact with insulation.

During her research, Vandooren was able to develop a general model of how radiation affects analog circuits. Analog circuits allow digital systems to connect to the real, analog world, Colinge said.

"If we expose circuits to a level of radiation, we know what to expect," said Colinge. This meant that they could design entire systems that were more resistant to radiation damage, he said.

Vandooren carried out irradiation experiments and measurements at the Lawrence Livermore National Laboratory and the Jet Propulsion Laboratory, Pasadena. Other collaborators on the project were the Catholic University of Louvain, Belgium, and the National College of Electronic and Radioelectricity Engineering in Grenoble, France.

Vandooren's thesis was selected as "best dissertation" at this year's College of Engineering commencement ceremony at UC Davis. After being courted by research labs and tech companies, she is now working on a related project for Motorola.


Story Source:

The above story is based on materials provided by University Of California, Davis. Note: Materials may be edited for content and length.


Cite This Page:

University Of California, Davis. "Radiation-Resistant Chips For Sturdier Satellites." ScienceDaily. ScienceDaily, 29 June 2001. <www.sciencedaily.com/releases/2001/06/010619072133.htm>.
University Of California, Davis. (2001, June 29). Radiation-Resistant Chips For Sturdier Satellites. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2001/06/010619072133.htm
University Of California, Davis. "Radiation-Resistant Chips For Sturdier Satellites." ScienceDaily. www.sciencedaily.com/releases/2001/06/010619072133.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com
Shipping Crates Get New 'lease' On Life

Shipping Crates Get New 'lease' On Life

Reuters - Business Video Online (July 25, 2014) Shipping containers have been piling up as America imports more than it exports. Some university students in Washington D.C. are set to get a first-hand lesson in recycling. Their housing is being built using refashioned shipping containers. Lily Jamali reports. Video provided by Reuters
Powered by NewsLook.com
Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) 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:
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