Featured Research

from universities, journals, and other organizations

Tiny Bubbles: New Tool In Chemical Sensing?

Date:
July 10, 2003
Source:
National Institute Of Standards And Technology (NIST)
Summary:
National Institute of Standards and Technology (NIST) chemists reported in the June 24 online edition of Langmuir that a process called microboiling shows promise for quick, simple and inexpensive chemical sensing. The process involves the formation of tiny vapor bubbles on a 200-nanometer-thick film of precious metal immersed in water and heated rapidly.

As the old Hawaiian love song says, tiny bubbles really do make some people feel fine. Chemists, that is. But there is no wine involved this time, just water.

National Institute of Standards and Technology (NIST) chemists reported in the June 24 online edition of Langmuir that a process called microboiling shows promise for quick, simple and inexpensive chemical sensing. The process involves the formation of tiny vapor bubbles on a 200-nanometer-thick film of precious metal immersed in water and heated rapidly. By coating the metal microheater with a single layer of water-repelling molecules, the scientists dramatically altered the microboiling behavior. Bubbles formed more obviously and at lower temperatures, and the water in immediate contact with the metal got much hotter.

"It's astounding to me that we changed one functional group on the surface of that microheater and saw a dramatic change in the boiling behavior," says Michael Tarlov, a co-author of the paper.

The finding means that changes in boiling behavior should be useful for detecting specific substances. The water surrounding a microheater designed to bond with DNA or proteins, for example, might boil at a different temperature if the target molecules were attached to the coating. A change can be measured in just 5 microseconds, much faster than typical lab techniques. NIST scientists have found that the technique can detect surfactants, such as those used in detergents, and are studying its use in microfluidic (or lab-on-a-chip) devices.

The research also has other potential spin-offs, such as the use of designer coatings to improve efficiency in boilers and heat exchangers and the use of microheaters to simplify chemical manufacturing.


Story Source:

The above story is based on materials provided by National Institute Of Standards And Technology (NIST). Note: Materials may be edited for content and length.


Cite This Page:

National Institute Of Standards And Technology (NIST). "Tiny Bubbles: New Tool In Chemical Sensing?." ScienceDaily. ScienceDaily, 10 July 2003. <www.sciencedaily.com/releases/2003/07/030710090551.htm>.
National Institute Of Standards And Technology (NIST). (2003, July 10). Tiny Bubbles: New Tool In Chemical Sensing?. ScienceDaily. Retrieved October 1, 2014 from www.sciencedaily.com/releases/2003/07/030710090551.htm
National Institute Of Standards And Technology (NIST). "Tiny Bubbles: New Tool In Chemical Sensing?." ScienceDaily. www.sciencedaily.com/releases/2003/07/030710090551.htm (accessed October 1, 2014).

Share This



More Matter & Energy News

Wednesday, October 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Argentina's Tax Evaders Detected, Hunted Down by Drones

Argentina's Tax Evaders Detected, Hunted Down by Drones

AFP (Sep. 30, 2014) Argentina doesn't only have Lionel Messi the footballer, it has now also acquired "Mesi" the drone system which monitors undeclared mansions, swimming pools and soy fields to curb tax evasion in the country. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Do Video Games Trump Brain Training For Cognitive Boosts?

Do Video Games Trump Brain Training For Cognitive Boosts?

Newsy (Sep. 29, 2014) More and more studies are showing positive benefits to playing video games, but the jury is still out on brain training programs. Video provided by Newsy
Powered by NewsLook.com
CERN Celebrates 60 Years of Science

CERN Celebrates 60 Years of Science

Reuters - Business Video Online (Sep. 29, 2014) CERN, the European Organisation for Nuclear Research, celebrates 60 years of bringing nations together through science. As Joanna Partridge reports from inside the famous science centre it's also planning to turn the Large Hadron Collider particle accelerator back on after an upgrade. Video provided by Reuters
Powered by NewsLook.com
This 'Invisibility Cloak' Is Simpler Than Most

This 'Invisibility Cloak' Is Simpler Than Most

Newsy (Sep. 28, 2014) Researchers from the University of Rochester have created a type of invisibility cloak with simple focal lenses. 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