Featured Research

from universities, journals, and other organizations

High-temperature Lab-on-a-chip Can Get Hotter Than Surface Of Venus

Date:
July 2, 2004
Source:
National Science Foundation
Summary:
Engineers have created a miniature hotplate that can reach temperatures above 1100C (2012F), self-contained within a "laboratory" no bigger than a child's shoe.

Infrared image of microhotplate. Central plate is only 43 microns (millionths of a meter) across.
Credit: Boston Microsystems, Inc.; National Science Foundation

Arlington, Va. -- Engineers have created a miniature hotplate that can reach temperatures above 1100C (2012F), self-contained within a "laboratory" no bigger than a child's shoe.

Related Articles


The micro-hotplates are only a few dozen microns across (roughly the width of a human hair), yet are capable of serving as substrates, heaters and conductors for thin-film experiments ranging from material analyses to the development of advanced sensors.

Researchers at Boston MicroSystems, Inc. craft the hotplates out of silicon carbide, a robust material that can tolerate extreme heat and reach peak temperature in less than one-thousandth of a second.

Silicon carbide is not only stable at high temperatures, it is also impervious to chemical attack from most materials. As a result, the hotplates can be cleaned by merely burning debris off the surface.

Contained on a microchip, the tiny "labs" reside within a polycarbonate chamber that can endure near-vacuum pressures. Ports on the chamber's sides allow gases to pass through and feed experiments, and because of the chamber's transparency, researchers can observe experiments with a microscope as they progress.

The hotplates also contain an integrated temperature gauge and a pair of electrodes. These components allow researchers to test the electrical properties of various materials that may be deposited onto the hotplates.

Using the stable, thin-film deposition properties and integrated circuitry of the hotplates, researchers are already developing applications such as oxygen and engine emission sensors. The sensor may have several advantages over devices in today's combustion engines, due to the micro-hotplate's chemical stability, small size, rapid response and low power consumption.

The techniques necessary for crafting and optimizing these micro-electro-mechanical systems (MEMS) were developed with support from the National Science Foundation Small Business Innovation Research (SBIR) program and SBIR programs at the Department of Energy, Environmental Protection Agency, and NASA.

Comments from the researchers:"High-temperature silicon carbide micro-hotplates are new to the research community and may prove to be flexible tools for optics, chemical vapor deposition chambers, micro-reactors and other applications." – Rick Mlcak, Boston MicroSystems

"The micro-hotplate arrays are versatile research tools--the same basic system can adapt to handle such diverse experiments as analyses of heat treatments and the characterization of new thin film materials." – Rick Mlcak, Boston MicroSystems

Comments from NSF:"The proposed oxygen sensor may find applications in the characterization of automobile emissions and the control of oxidation and reduction reactions in ceramics and metallurgical processing." – Winslow Sargeant, the NSF SBIR program officer who oversees the Boston Microsystems award. "The exceptionally small size and low power consumption of the micro-hotplate oxygen sensors make them particularly suited for portable instrumentation, monitoring of hazardous environments, sensing of respiration and biological processes, control of oxygen-sensitive industrial processes, and the packaging and monitoring of food." – Winslow Sargeant


Story Source:

The above story is based on materials provided by National Science Foundation. Note: Materials may be edited for content and length.


Cite This Page:

National Science Foundation. "High-temperature Lab-on-a-chip Can Get Hotter Than Surface Of Venus." ScienceDaily. ScienceDaily, 2 July 2004. <www.sciencedaily.com/releases/2004/07/040702091110.htm>.
National Science Foundation. (2004, July 2). High-temperature Lab-on-a-chip Can Get Hotter Than Surface Of Venus. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2004/07/040702091110.htm
National Science Foundation. "High-temperature Lab-on-a-chip Can Get Hotter Than Surface Of Venus." ScienceDaily. www.sciencedaily.com/releases/2004/07/040702091110.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cablevision Enters Wi-Fi Phone Fray

Cablevision Enters Wi-Fi Phone Fray

Reuters - Business Video Online (Jan. 26, 2015) The entry by Cablevision and Google could intensify the already heated price wars for mobile phone service. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Hector the Robot Mimics a Giant Stick Insect

Hector the Robot Mimics a Giant Stick Insect

Reuters - Innovations Video Online (Jan. 26, 2015) A robot based on a stick insect can navigate difficult terrain autonomously and adapt to its surroundings. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Scientists Model Flying, Walking Drone After Vampire Bats

Scientists Model Flying, Walking Drone After Vampire Bats

Buzz60 (Jan. 26, 2015) Swiss scientists build a new drone that can both fly and walk, modeling it after the movements of common vampire bats. Jen Markham (@jenmarkham) has the story. Video provided by Buzz60
Powered by NewsLook.com
Obama's Wildlife Plan Renews Alaska Drilling Debate

Obama's Wildlife Plan Renews Alaska Drilling Debate

Newsy (Jan. 26, 2015) President Obama&apos;s proposal aims to protect more land in the Arctic National Wildlife Refuge, but so far, all that&apos;s materialized is a war of words. 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:

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