Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > U of M researcher helps discover road to sustainable electronic devices

Abstract:
A recent discovery by a multinational team including a University of Minnesota scientist, professor Michael Sadowsky in the department of soil, water and climate, could lead to more environmentally friendly manufacturing of electronic devices.

U of M researcher helps discover road to sustainable electronic devices

MINNEAPOLIS / ST. PAUL, MN | Posted on January 10th, 2008

Sadowsky and co-researchers found that the bacterium Shewanella has the unique ability to convert arsenate into arsenic sulfide nanotubes, tiny filaments that may find use in the optical, medical and electronics industries. The arsenic sulfide nanotubes are both electrically conductive and photoconductive. The findings were published in the Proceedings of the National Academy of Sciences journal in December, 2007.

When Shewanella, a type of bacterium found in soil and water, converts arsenate to arsenic sulfide, it leaves behind a yellow residue, which the researchers realized is a tangle of nanotubes. While the tubes don't conduct electrically at first, after eight days they become conductive as well as photoactive.

The scientists believe that this is the first time that these specialized arsenic-sulfide nanotubes have been produced by biological rather than chemical means. Nanotubes hold great promise, as they can be used to make fuel cells and batteries, biosensors for metals and other compounds in the environment and electronics industries, said Michael Sadowsky, a University of Minnesota professor in the department of soil, water and climate and one of the study's authors. "The exciting thing is that these nanotubes produced by biological means may eventually allow us to produce novel semiconductor devices that could not be made other ways," he said.

The research team, which is led by scientists from a South Korean university, expects to turn its attention next toward making the nanotubes smaller and more uniform, as well as looking for other unique properties. The study's lead author, Hor-Gil Hur, is spending this academic year as a visiting scholar at the University of Minnesota.

####

About University of Minnesota
The University of Minnesota is one of the most comprehensive public universities in the United States and ranks among the most prestigious. It is both the state land-grant university, with a strong tradition of education and public service, and the state's primary research university, with faculty of national and international reputation.

For more information, please click here

Contacts:
Becky Beyers
College of Food, Agricultural and Natural Resource Sciences
(612) 626-5754

Luisa Badaracco
University News Service
(612) 624-1690

Copyright © University of Minnesota

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Novel Rocket Design Flight Tested: New Rocket Propellant and Motor Design Offers High Performance and Safety October 23rd, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Chip Technology

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Materials for the next generation of electronics and photovoltaics: MacArthur Fellow develops new uses for carbon nanotubes October 21st, 2014

Nitrogen Doped Graphene Characterized by Iranian, Russian, German Scientists October 21st, 2014

Sensors

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Journal Nanotechnology Progress International (JONPI), 2014, Volume 5, Issue 1, pp 1-24 October 22nd, 2014

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Graphenea opens US branch October 16th, 2014

Discoveries

Iranian Scientists Apply Nanotechnology to Produce Surgery Suture October 23rd, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Announcements

Nanoparticle technology triples the production of biogas October 23rd, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Energy

Nanoparticle technology triples the production of biogas October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Researchers patent a nanofluid that improves heat conductivity October 22nd, 2014

Could I squeeze by you? Ames Laboratory scientists model molecular movement within narrow channels of mesoporous nanoparticles October 21st, 2014

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Super stable garnet ceramics may be ideal for high-energy lithium batteries October 21st, 2014

Graphenea opens US branch October 16th, 2014

NTU develops ultra-fast charging batteries that last 20 years October 14th, 2014

Electrically conductive plastics promising for batteries, solar cells October 10th, 2014

Fuel Cells

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Unique catalysts for hydrogen fuel cells synthesized in ordinary kitchen microwave oven October 14th, 2014

Researchers Pump Up Oil Accumulation in Plant Leaves: Method could greatly boost energy content of crops grown for fuel October 8th, 2014

Platinum meets its match in quantum dots from coal: Rice University's cheap hybrid outperforms rare metal as fuel-cell catalyst October 1st, 2014

Nanobiotechnology

NYU Researchers Break Nano Barrier to Engineer the First Protein Microfiber October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Mechanism behind nature's sparkles revealed October 22nd, 2014

‘Designer’ nanodevice could improve treatment options for cancer sufferers October 22nd, 2014

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE