Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Tunable plastic thermometers

Abstract:
Scientists use an ion beam to produce conductive plastic films for electrical resistance thermometers

Tunable plastic thermometers

Weinheim, Germany | Posted on December 15th, 2010

Researchers at the Universities of Queensland and New South Wales in Australia have discovered that the ability of a plastic to conduct electricity can be tuned by exposure to an ion beam. Usually plastics conduct electricity so poorly that they are used as the insulation around electrical cables. However, the team was able to tune the properties of a plastic film using an ion beam so that it conducted electricity like the metals used in the electrical wires themselves - and even passed electric current without resistance, materials which do this are known as superconductors. To demonstrate a potential application of this low-cost, robust, and flexible material, the team produced electrical resistance thermometers that meet industrial standards. These results are published in the journal ChemPhysChem.

Ion beam techniques are widely used in the microelectronics industry to tailor the conductivity of semiconductors such as silicon. Attempts have been made to adapt this process to plastic films since the 1980s, with limited success. While the use of argon and krypton ion beams leads to a substantial increase in electrical conductivity, the resulting films remain insulators. The team took an alternative approach, known as ion beam metal-mixing, where a thin film of metal is deposited on a plastic sheet and mixed into the polymer surface using an ion beam. They found that this can produce conducting plastics with metallic or even superconducting properties.

"The process allows us to cover over ten orders of magnitude in electrical resistance and access three distinct regimes of conductivity - insulator, metal and superconductor - with a single material system", says Andrew P. Stephenson, lead author of the paper. This remarkable tunability is achieved by a careful choice of the species used for the ion beam. Stephenson and colleagues start with a polyetheretherketone (PEEK) film coated with a nanoscale layer of tin-antimony alloy, and use a tin ion beam to mix the metal into the plastic surface. This results in an efficient and stable blending of the metal-polymer surface. Furthermore, the conductivity of the resulting material can be tailored precisely by tuning the initial metal film thickness, beam energy and beam dose.

This level of tunability and control in electrical resistance lends itself naturally to the application of resistance temperature measurement. As a demonstration of this potential application, the team tested their films against an industry standard platinum resistance thermometer, obtaining comparable accuracy. As well as being inexpensive, flexible and easily produced with equipment commonly used in the microelectronics industry, these materials are vastly more tolerant of exposure to oxygen compared to standard semiconducting polymers such as polyhexylthiophene or pentacene. "Combined, these advantages may give ion-beam-processed polymer films a bright future in the on-going development of soft materials for plastic electronics applications - a fusion between current and next-generation technology," the researchers say.

Author: Andrew P. Stephenson, Ben J. Powell, University of Queensland, Brisbane (Australia), www.uq.edu.au/

Title: A Tunable Metal-Organic Resistance Thermometer

ChemPhysChem 2011, 12, No. 1, Permalink to the article: dx.doi.org/10.1002/cphc.201000762

####

For more information, please click here

Copyright © ChemPhysChem

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

Seeing quantum motion August 30th, 2015

Artificial leaf harnesses sunlight for efficient fuel production August 30th, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Draw out of the predicted interatomic force August 30th, 2015

Possible Futures

Sediment dwelling creatures at risk from nanoparticles in common household products August 13th, 2015

Harris & Harris Group Reports Financial Statements as of June 30, 2015, and Announces a Stock Repurchase Program August 10th, 2015

Molecular trick alters rules of attraction for non-magnetic metals August 5th, 2015

Global Carbon Nanotubes Industry 2015: Acute Market Reports August 4th, 2015

Academic/Education

Announcing Oxford Instruments and School of Physics signing a Memorandum of Understanding August 26th, 2015

Kwansei Gakuin University in Hyogo, Japan, uses Raman microscopy to study crystallographic defects in silicon carbide wafers August 25th, 2015

JPK reports on the use of a NanoWizard® AFM-SECM system at the Université Paris Diderot looking at nanoscale biostructures August 18th, 2015

Rice, Penn State open center for 2-D coatings: National Science Foundation selects universities to develop atom-thin materials with industry partners August 13th, 2015

Chip Technology

Nanometrics to Participate in the Citi 2015 Global Technology Conference August 26th, 2015

Kwansei Gakuin University in Hyogo, Japan, uses Raman microscopy to study crystallographic defects in silicon carbide wafers August 25th, 2015

A little light interaction leaves quantum physicists beaming August 25th, 2015

'Magic' sphere for information transfer: Professor at the Lomonosov Moscow State University made the «magic» sphere for information transfer August 24th, 2015

Nanoelectronics

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2015 conference August 25th, 2015

'Quantum dot' technology may help light the future August 19th, 2015

Surprising discoveries about 2-D molybdenum disulfide: Berkeley Lab researchers use award-winning campanile probe on promising semiconductor August 15th, 2015

Better together: Graphene-nanotube hybrid switches August 3rd, 2015

Discoveries

Seeing quantum motion August 30th, 2015

Artificial leaf harnesses sunlight for efficient fuel production August 30th, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Draw out of the predicted interatomic force August 30th, 2015

Announcements

Seeing quantum motion August 30th, 2015

Artificial leaf harnesses sunlight for efficient fuel production August 30th, 2015

Researchers use DNA 'clews' to shuttle CRISPR-Cas9 gene-editing tool into cells August 30th, 2015

Draw out of the predicted interatomic force August 30th, 2015

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







Car Brands
Buy website traffic