Featured Research

from universities, journals, and other organizations

New nanomethod paves the way for new measuring technology and hypersensitive sensors

Date:
November 20, 2009
Source:
The Swedish Research Council
Summary:
Researchers have developed a new measurement technology that makes use of optical resonances in nanoparticles. The method, which opens new possibilities in the field of catalytics.

The plasmon resonance in a gold nanoparticle is exited with light so that the particle appears to have a color. If there is a change in e.g. the molecules adsorbed onto the catalyst nanoparticles, this will be sensed by the gold nanoparticles, inducing a change in their color.
Credit: Image courtesy of The Swedish Research Council

Researchers at Chalmers University of Technology in Sweden have developed a new measurement technology that makes use of optical resonances in nanoparticles. The method, which opens new possibilities in the field of catalytics, will be published in the journal Science in November.

Optical resonances in nanoparticles, so-called plasmon resonances, have been the object of intensive research and development for about a decade now for detection of biological molecules and in optoelectronics.

The Chalmers scientists can now show that plasmon resonances in nanoparticles can be used to monitor reactions ON catalysts and for the design of sensors that are extremely sensitive.

The article is based on findings from doctoral work done by Elin Larsson and Christoph Langhammer. Co-authors are Igor Zoric and Bengt Kasemo, all in chemical physics at Chalmers.

The discoveries pave the way both for new measurement techniques in the nano field and the development of entirely new, hypersensitive sensors. With the new technology it will be possible to study catalysts in real time under realistic conditions, thus enhancing our knowledge of catalytic processes and helping develop new catalysts.

This helps bring down the use of both materials and energy in a number of processes and moreover reduces environmentally toxic emissions both from industry and vehicles.

Sensors are used daily in numerous areas, everything from medical diagnostics and control of industrial processes to combustion and catalytic cleaning of exhausts from vehicle engines. Today's sensors are often expensive and/or insufficient owing to short lifetimes, low selectivity and sensitivity, and lack of durability in demanding environments.

The new method is extremely robust and technologically simple, which will enable the development of inexpensive and robust sensors.

The research is continuing, targeting a number of diverse applications. Elin Larsson is further developing the method for the catalytic field at the Competence Center for Catalysis, KCK, at Chalmers.

Commercialization is being planned in the CleanSense Project, which was started within the framework of the Chalmers School of Entrepreneurship.

The research has largely been pursued as part of the SSF-funded project Photoactive Nanostructures, and is now continuing in the Nanotechnology for Sustainable Energy Project, funded by the Chalmers Foundation and the Swedish Energy Agency.


Story Source:

The above story is based on materials provided by The Swedish Research Council. Note: Materials may be edited for content and length.


Journal Reference:

  1. Larsson et al. Nanoplasmonic Probes of Catalytic Reactions. Science, 2009; DOI: 10.1126/science.1176593

Cite This Page:

The Swedish Research Council. "New nanomethod paves the way for new measuring technology and hypersensitive sensors." ScienceDaily. ScienceDaily, 20 November 2009. <www.sciencedaily.com/releases/2009/10/091029161218.htm>.
The Swedish Research Council. (2009, November 20). New nanomethod paves the way for new measuring technology and hypersensitive sensors. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/2009/10/091029161218.htm
The Swedish Research Council. "New nanomethod paves the way for new measuring technology and hypersensitive sensors." ScienceDaily. www.sciencedaily.com/releases/2009/10/091029161218.htm (accessed April 18, 2014).

Share This



More Matter & Energy News

Friday, April 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com
Horseless Carriage Introduced at NY Auto Show

Horseless Carriage Introduced at NY Auto Show

AP (Apr. 17, 2014) An electric car that proponents hope will replace horse-drawn carriages in New York City has also been revealed at the auto show. (Apr. 17) Video provided by AP
Powered by NewsLook.com
Honda's New ASIMO Robot, More Human-Like Than Ever

Honda's New ASIMO Robot, More Human-Like Than Ever

AFP (Apr. 17, 2014) It walks and runs, even up and down stairs. It can open a bottle and serve a drink, and politely tries to shake hands with a stranger. Meet the latest ASIMO, Honda's humanoid robot. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. 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