Featured Research

from universities, journals, and other organizations

Electronic "Tongue" For Environmental Monitoring

Date:
May 13, 2002
Source:
Cardiff University
Summary:
UK researchers are developing a unique electronic ‘tongue’ that can be dipped into rivers or industrial effluent streams to ensure that the water does not contain anything sinister.

UK researchers are developing a unique electronic ‘tongue’ that can be dipped into rivers or industrial effluent streams to ensure that the water does not contain anything sinister.

Related Articles


The researchers, based at Cardiff University’s School of Engineering, have demonstrated that the ‘tasting’ part of the system can be fabricated from very small components, making it potentially easy and inexpensive to mass-produce. The next step would be to link the tongue to a computerised ‘brain’ to analyse the signals it generates.

The work is being carried out by Professor David Barrow’s team, with funding from the Swindon based Engineering and Physical Sciences Research Council (EPSRC).

The system is based on an analytical technique called chromatography (a technique for separating mixtures). Here, the chemical sample, contained in a liquid or a gas, is passed through or over a solid ‘matrix’ which has a high surface area – for example a glass cylinder packed with silica beads. It is possible to attach a variety of chemical ‘hooks’ on to the beads, so that as the sample passes down the column of beads different components will be ‘grabbed’ by the hooks to differing extents. In this way the various components can be separated from the mixture and analysed.

The Cardiff researchers’ system works on broadly similar principles, but on a much smaller scale. If a silicon chip is treated with hydrofluoric acid in a controlled way, it becomes etched with millions of tiny pores and channels, of dimensions of nanometres. “So if you etch a spot a millimetre square, you actually have several square metres of internal surface area,” says Professor Barrow. “It is in effect a tiny chromatographic ‘extraction cartridge’.”

“You could put the system in a river or factory process stream to monitor the mixtures flowing through it,” says Professor Barrow.


Story Source:

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


Cite This Page:

Cardiff University. "Electronic "Tongue" For Environmental Monitoring." ScienceDaily. ScienceDaily, 13 May 2002. <www.sciencedaily.com/releases/2002/05/020513075143.htm>.
Cardiff University. (2002, May 13). Electronic "Tongue" For Environmental Monitoring. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2002/05/020513075143.htm
Cardiff University. "Electronic "Tongue" For Environmental Monitoring." ScienceDaily. www.sciencedaily.com/releases/2002/05/020513075143.htm (accessed January 30, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Friday, January 30, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

Tesla 'Insane Mode' Gives Unsuspecting Passengers the Ride of Their Life

RightThisMinute (Jan. 29, 2015) — If your car has an "Insane Mode" then you know it&apos;s fast. Well, these unsuspecting passengers were in for one insane ride when they hit the button. Tesla cars are awesome. Video provided by RightThisMinute
Powered by NewsLook.com
Now Bill Gates Is 'Concerned' About Artificial Intelligence

Now Bill Gates Is 'Concerned' About Artificial Intelligence

Newsy (Jan. 29, 2015) — Bill Gates joins the list of tech moguls scared of super-intelligent machines. He says more people should be concerned, but why? Video provided by Newsy
Powered by NewsLook.com
Senate Passes Bill for Keystone XL Pipeline

Senate Passes Bill for Keystone XL Pipeline

AP (Jan. 29, 2015) — The Republican-controlled Senate has passed a bipartisan bill approving construction of the Keystone XL oil pipeline. (Jan. 29) Video provided by AP
Powered by NewsLook.com
Two Stunt Pilots Perform Incredibly Close Flyby

Two Stunt Pilots Perform Incredibly Close Flyby

Rumble (Jan. 29, 2015) — Two pilots from &apos;Escuadrilla Argentina de Acrobacia Aιrea&apos; perform an incredibly low altitude flyby stunt during a recent show exhibition in Argentina. Check it out! Video provided by Rumble
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