Navigation Links
Spinning up antibacterial silver on glass
Date:6/27/2013

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.

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.


'/>"/>

Contact: Albert Ang
press@inderscience.com
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Study quantifies the size of holes antibacterials create in cell walls to kill bacteria
2. Antibacterial agent used in common soaps found in increasing amounts in freshwater lakes
3. Antibacterial proteins molecular workings revealed
4. HIV-derived antibacterial shows promise against drug-resistant bacteria
5. Are silver nanoparticles harmful?
6. Silver nanoparticle synthesis using strawberry tree leaf
7. Ions, not particles, make silver toxic to bacteria
8. How silver turns people blue
9. Global warming may have severe consequences for rare Haleakalā silverswords
10. Global warming may have severe consequences for rare Haleakalā silverswords
11. Is nanosilver toxic?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/8/2016)... -- Singulex, Inc., the leader in Next Generation Immunodiagnostics powered ... and supply agreement with Thermo Fisher Scientific, the world ... to Thermo Scientific BRAHMS PCT (Procalcitonin), a biomarker which, ... diagnose systemic bacterial infection and sepsis and in ... assessing the risk of critically ill patients for progression ...
(Date:12/7/2016)... , Dec. 7, 2016   Veridium ... announced the appointment of new CEO James ... executive with decades of experience, has served in ... Cisco, where he specialized in expanding a pipeline ... technology portfolios. He most recently served as managing ...
(Date:12/5/2016)... 5, 2016  The Office of Justice Programs, ... CT Scans Enhance or Replace Medico Legal Autopsies?" ... supporting or replacing forensic autopsies with postmortem X-ray ... In response to recommendations made by The ... CT scans as a potential component of medicolegal ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... , Dec. 8, 2016 This report analyzes the ... Segments: Acid Based (Humic, Amino, & Fulvic), Extract Based, and ... following Crop Types: Ornamental & Turf, Row Crops, and Others. ... Canada , Japan , ... Latin America , and Rest of World. Annual ...
(Date:12/8/2016)... ... December 08, 2016 , ... From wearable devices ... taking over sports. On Thursday, December 15th a panel of entrepreneurs, innovators and ... playing field at a Smart Talk session. Smart Talk will run from 8:30 ...
(Date:12/8/2016)... 8, 2016  Renova™ Therapeutics, a biotechnology company ... and type 2 diabetes, announced that it has ... virus (AAV) vector developed in the laboratory of ... Stanford University. The company plans to use this ... product pipeline. "Early research has ...
(Date:12/8/2016)... ... December 08, 2016 , ... ... that provide essential device-to-computer interconnect using USB or PCI Express, announced the FOMD-ACV-A4, ... The FOMD-ACV-A4 is a small, thin, SODIMM-style module that fits a standard 204-pin ...
Breaking Biology Technology: