Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Picosun’s ALD nanolaminates improve lifetime and reliability of electronic circuit boards October 24th, 2017

JPK reports the research of the Schwille Group at the Max Planck Institute of Biochemistry near Munich using the NanoWizard® ULTRA Speed AFM October 24th, 2017

Researchers bring optical communication onto silicon chips: Ultrathin films of a semiconductor that emits and detects light can be stacked on top of silicon wafers October 23rd, 2017

Nanotube fiber antennas as capable as copper: Rice University researchers show their flexible fibers work well but weigh much less October 23rd, 2017

Chip Technology

Picosun’s ALD nanolaminates improve lifetime and reliability of electronic circuit boards October 24th, 2017

GTC Shanghai Highlights GF’s Momentum in China: Company shares details of technology roadmap and customer adoption in the world’s fastest-growing market for semiconductors October 23rd, 2017

Researchers bring optical communication onto silicon chips: Ultrathin films of a semiconductor that emits and detects light can be stacked on top of silicon wafers October 23rd, 2017

Novel 'converter' heralds breakthrough in ultra-fast data processing at nanoscale: Invention bagged four patents and could potentially make microprocessor chips work 1,000 times faster October 20th, 2017

Sensors

MIPT scientists revisit optical constants of ultrathin gold films October 20th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Single ‘solitons’ promising for optical technologies October 9th, 2017

Two dimensional materials: Advanced molybdenum selenide near infrared phototransistors September 27th, 2017

Discoveries

Researchers bring optical communication onto silicon chips: Ultrathin films of a semiconductor that emits and detects light can be stacked on top of silicon wafers October 23rd, 2017

Nanotube fiber antennas as capable as copper: Rice University researchers show their flexible fibers work well but weigh much less October 23rd, 2017

A step closer to understanding quantum mechanics: Swansea University’s physicists develop a new quantum simulation protocol October 22nd, 2017

Creation of coherent states in molecules by incoherent electrons October 21st, 2017

Announcements

Picosun’s ALD nanolaminates improve lifetime and reliability of electronic circuit boards October 24th, 2017

JPK reports the research of the Schwille Group at the Max Planck Institute of Biochemistry near Munich using the NanoWizard® ULTRA Speed AFM October 24th, 2017

GTC Shanghai Highlights GF’s Momentum in China: Company shares details of technology roadmap and customer adoption in the world’s fastest-growing market for semiconductors October 23rd, 2017

Nanobiotix completes patient inclusion for Phase II/III trial of NBTXR3 in soft tissue sarcoma October 23rd, 2017

Energy

New nanomaterial can extract hydrogen fuel from seawater: Hybrid material converts more sunlight and can weather seawater's harsh conditions October 4th, 2017

Researchers set time limit for ultrafast perovskite solar cells September 22nd, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

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

Strange but true: turning a material upside down can sometimes make it softer October 20th, 2017

On the road to fire-free, lithium-ion batteries made with asphalt October 12th, 2017

Organic/inorganic sulfur may be key for safe rechargeable lithium batteries October 12th, 2017

How to draw electricity from the bloodstream: A one-dimensional fluidic nanogenerator with a high power-conversion efficiency September 11th, 2017

Fuel Cells

Hydrogen power moves a step closer: Physicists are developing methods of creating renewable fuel from water using quantum technology September 15th, 2017

More durable, less expensive fuel cells: University of Delaware researchers have developed a new technology that could speed up the commercialization of fuel cell vehicles September 5th, 2017

Engineers pioneer platinum shell formation process – and achieve first-ever observation August 11th, 2017

Argonne National Laboratory’s Continuous ALD Technology Licensed Exclusively to Forge Nano July 7th, 2017

Nanobiotechnology

Nanobiotix completes patient inclusion for Phase II/III trial of NBTXR3 in soft tissue sarcoma October 23rd, 2017

Arrowhead Pharmaceuticals Reports Inducement Grants under NASDAQ Marketplace Rule 5635(c)(4) October 23rd, 2017

Arrowhead Presents Promising Preclinical Data on Development of ARO-AAT for Treatment of Alpha-1 Liver Disease at Liver Meeting(R) 2017 October 23rd, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

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