Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > AU engineering researchers develop breakthrough antimicrobial coatings

An Auburn University engineering research team works with a newly developed antimicrobial coating, which is made from a combination of lysozyme, a natural product with antimicrobial properties found in egg whites and human tears, with single-walled carbon nanotubes, which are strong, microscopic pieces of carbon. Pictured, left to right, are study leader and assistant professor Virginia Davis, postdoctoral fellow Dhriti Nepal, graduate student Shankar Balasubramanian and professor Aleksandr Simonian.
An Auburn University engineering research team works with a newly developed antimicrobial coating, which is made from a combination of lysozyme, a natural product with antimicrobial properties found in egg whites and human tears, with single-walled carbon nanotubes, which are strong, microscopic pieces of carbon. Pictured, left to right, are study leader and assistant professor Virginia Davis, postdoctoral fellow Dhriti Nepal, graduate student Shankar Balasubramanian and professor Aleksandr Simonian.

Abstract:
A team of researchers in Auburn University's Samuel Ginn College of Engineering has produced new antimicrobial coatings with potential to prevent diseases from spreading on contaminated surfaces - possibly solving a growing problem not only in hospitals but also in schools, offices, airplanes and elsewhere.

AU engineering researchers develop breakthrough antimicrobial coatings

Auburn, AL | Posted on July 9th, 2008

Led by Virginia Davis, assistant professor in the Department of Chemical Engineering, and Aleksandr Simonian, professor of materials engineering in the Department of Mechanical Engineering, the Auburn researchers mixed solutions of lysozyme, a natural product with antimicrobial properties found in egg whites and human tears, with single-walled carbon nanotubes, or SWNTs, which are strong, microscopic pieces of carbon. SWNTs, at one nanometer in diameter, are a perfect cylinder of carbon and keep the lysozyme intact in the coating.

"Lysozyme is used in some commercial products such as Biotene mouthwash," said Davis. "However, lysozyme itself is not as tough. Single-walled carbon nanotubes, on the other hand, are among the strongest materials known to man. While they are 100 times as strong as steel, they have only one-sixth the weight."

By using a process called layer-by-layer deposition, the team demonstrated the inability of intact Staphylococcus aureus cells to grow on antimicrobial surfaces.

"Disinfection generally requires rigorous cleaning with solvent that must remain wet for a given period of time to ensure that surface germs are killed," said Davis. "In contrast, we have created a surface that is inherently antimicrobial, so how long it is wet is not an issue."

Davis' research paper, "Strong Antimicrobial Coatings: Single-Walled Carbon Nanotubes Armored with Biopolymers," was recently featured in NanoLetters, a premier journal in the field, frequently cited by top researchers.

"The material presented in NanoLetters is only the beginning," said Davis. "We plan to adapt processing to enable the assembly of coatings on a much larger scale. As a foundation for future applications, the combination of single-walled carbon nanotubes with DNA, proteins and enzymes enables a range of possibilities for sensing and smart-functionality capabilities."

Davis' research and teaching expertise is related to SWNTs, their dispersion and shear alignment, which involves nanotube exploitation of specific properties and alignment across large spaces. She is a former student of Matteo Pasquali, associate professor of chemical and biomolecular engineering at Rice University, and Nobel Prize winner Richard E. Smalley. Simonian is a recognized expert in smart bio-functionalized materials and bio-sensing. He founded the biosensors laboratory at Yerevan Physics Institute in Armenia and serves as a member of the Auburn University Detection and Food Safety Center.

Graduate student Shankar Balasubramanian, whose expertise is in biosensors and antimicrobial materials, and postdoctoral fellow Dhriti Nepal, whose background is in SWNT-biopolymer dispersion, contributed to the project.

Davis' paper can be read online at
pubs.acs.org/cgi-bin/abstract.cgi/nalefd/asap/abs/nl080522t.html.

More information about research in the Department of Chemical Engineering or the Samuel Ginn College of Engineering at Auburn University is available at eng.auburn.edu.

####

For more information, please click here

Contacts:
Sally Credille

(334) 844-3447, or
Charles Martin

(334) 844-9986

Copyright © Auburn University

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

Nanofiltration Membrane Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Nanozirconia Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Self-Healing Nano Anti-rust Coatings Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Nano Spray Instrument Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Nanomedicine

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

European Technology Platform for Nanomedicine and ENATRANS European Consortium Launch the 2nd edition of the Nanomedicine Award: The Award to be presented at BIO-Europe conference in Munich, November 2015 July 30th, 2015

Take a trip through the brain July 30th, 2015

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Discoveries

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Theoretical Physicists at Freie Universitšt Berlin Develop New Insights into Interface between Classical and Quantum Worlds July 31st, 2015

Sol-gel capacitor dielectric offers record-high energy storage July 30th, 2015

Controlling Dynamic Behavior of Carbon Nanosheets in Structures Made Possible July 30th, 2015

Announcements

Nano Spray Instrument Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Nanocellulose Market 2015 - Global Industry Survey, Analysis, Size, Share, Outlook and Forecast to 2020 July 31st, 2015

Heating and cooling with light leads to ultrafast DNA diagnostics July 31st, 2015

Theoretical Physicists at Freie Universitšt Berlin Develop New Insights into Interface between Classical and Quantum Worlds July 31st, 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