Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Spinning up antibacterial silver on glass

Abstract:
The antibacterial effects of silver are well established. Now, researchers at Yonsei University in Seoul, Republic of Korea, have developed a technique to coat glass with a layer of silver ions that can prevent growth of pathogenic bacteria including Escherichia coli, Salmonella typhimurium and Campylobacter jejuni. The technology could be used to protect medical equipment and be particularly useful for applications in disaster recovery and the military environment.

Spinning up antibacterial silver on glass

Seoul, South Korea | Posted on June 27th, 2013

Materials scientist Se-Young Choi and colleagues Cheol-Young Kim, Yu-Ri Choi and Kwang-Mahn Kim, explain in the International Journal of Nanotechnology how silver has been known to be an antibacterial substance since the middle of the nineteenth century. It has found applications in bactericidal formulations for medical instruments and even odor-destroying socks

A big advantage of the use of this substance rather than organic agents against bacteria is that bacteria are yet to evolve resistance to it whereas genetic mutations that lead to proteins that can assimilate and degrade organic compounds frequently arise. As such, silver solutions have been used widely as disinfectants, in water purification in and in dentistry. Scientists have demonstrated that silver ions can latch on to sulfur-containing thiol groups in bacterial biomolecules disrupting their activity and thereby killing the microbes. Finding a way to add a permanent silver ion coating to glass would expand the antibacterial repertoire much further allowing a wider range of medical instruments, drinking vessels and other equipment to be kept sanitary regardless of working conditions.

The Seoul team has now developed a way to "spin" coat glass with silver present in a so-called sol-gel, a type of gelatinous solution within which are dispersed dissolved silver ions present as their nitrate salt. Spinning takes place at 200 Celsius with a rotation rate of 2000 revolutions per minute. They used atomic force microscopy to demonstrate how a substantial coating could be formed on glass and then successfully tested its activity against various food-poisoning bacteria. The resulting coated glass is more than 90 percent as transparent as uncoated glass bending strength tests show it to be slightly toughened by the presence of the silver coating.

"There are lots of bacteria that can cause serious food poisoning in the military equipment and environments," Choi explains. "So, the antimicrobial activity of the silver ion containing film showed its potential for use as a coating for medical devices and military equipment." The team suggests that the same approach could be used to spin coat other smooth materials.

"Fabrication and antibacterial properties of silver-coated glass substrate against Escherichia coli, Salmonella typhimurium, and Campylobacter jejuni" in Int. J. Nanotechnol, 2013, 10, 643-652

####

For more information, please click here

Contacts:
Albert Ang

Copyright © Inderscience Publishers

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

Composite Pipe Long Term Testing Facility February 10th, 2016

Scientists take nanoparticle snapshots February 10th, 2016

Chemical cages: New technique advances synthetic biology February 10th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

Govt.-Legislation/Regulation/Funding/Policy

Composite Pipe Long Term Testing Facility February 10th, 2016

Scientists take nanoparticle snapshots February 10th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

Making sense of metallic glass February 9th, 2016

Nanomedicine

Nanoparticle therapy that uses LDL and fish oil kills liver cancer cells February 9th, 2016

Leading bugs to the death chamber: A kinder face of cholesterol February 8th, 2016

UTHealth research looks at nanotechnology to help prevent preterm birth February 7th, 2016

Scientists take key step toward custom-made nanoscale chemical factories: Berkeley Lab researchers part of team that creates new function in tiny protein shell structures February 6th, 2016

Discoveries

Scientists take nanoparticle snapshots February 10th, 2016

Chemical cages: New technique advances synthetic biology February 10th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

Electron's 1-D metallic surface state observed: A step for the prediction of electronic properties of extremely-fine metal nanowires in next-generation semiconductors February 9th, 2016

Announcements

Composite Pipe Long Term Testing Facility February 10th, 2016

Scientists take nanoparticle snapshots February 10th, 2016

Chemical cages: New technique advances synthetic biology February 10th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Scientists take nanoparticle snapshots February 10th, 2016

Chemical cages: New technique advances synthetic biology February 10th, 2016

New thin film transistor may lead to flexible devices: Researchers engineer an electronics first, opening door to flexible electronics February 10th, 2016

Electron's 1-D metallic surface state observed: A step for the prediction of electronic properties of extremely-fine metal nanowires in next-generation semiconductors February 9th, 2016

Military

Scientists guide gold nanoparticles to form 'diamond' superlattices: DNA scaffolds cage and coax nanoparticles into position to form crystalline arrangements that mimic the atomic structure of diamond February 4th, 2016

Researchers develop completely new kind of polymer: Hybrid polymers could lead to new concepts in self-repairing materials, drug delivery and artificial muscles January 30th, 2016

Nano-coating makes coaxial cables lighter: Rice University scientists replace metal with carbon nanotubes for aerospace use January 28th, 2016

Scientists build a neural network using plastic memristors: A group of Russian and Italian scientists have created a neural network based on polymeric memristors -- devices that can potentially be used to build fundamentally new computers January 28th, 2016

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