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Put Your Virus/Bacteria/Toxin Detecting Nanofiber Napkin Back in Your Lap!

September 15th, 2006 Justin Barad Diagnostics, Public Health


Cornell University is reporting that its researchers are working on developing a new “nano-napkin.” The napkin would contain nanofibers bound to specific antibodies. The antibodies would latch onto any desired substance, be it a bacteria, virus, or other compound. One would simply wipe the biodegradable napkin over a surface of interest, and the napkin should change a specific color if it “finds” anything. The device, which won’t be available for a few years, should be very useful in the fields of food prep, health-care, and security. Hopefully there won’t be too many false-positives from ketchup stains.

“It’s very inexpensive, it wouldn’t require that someone be highly trained to use it, and it could be activated for whatever you want to find,” said Margaret Frey, the Lois and Mel Tukman Assistant Professor of Fiber Science and Apparel Design at Cornell. “So if you’re working in a meat-packing plant, for instance, you could swipe it across some hamburger and quickly and easily detect E. coli bacteria.” She reported on the research at the American Chemical Society’s national meeting today (Sept. 11) in San Francisco.
Once fully developed, the biodegradable absorbent wipe would contain nanofibers containing antibodies to numerous biohazards and chemicals and would signal by changing color or through another effect when the antibodies attached to their targets. Users would simply wipe the napkin across a surface; if a biohazard were detected, the surface could be disinfected and retested with another napkin to be sure it was no longer contaminated.
In work conducted with Yong Joo, assistant professor of chemical and biomolecular engineering, and Antje Baeumner, associate professor of biological and environmental engineering, both at Cornell, Frey developed nanofibers with platforms made of biotin, a part of the B vitamin complex, and the protein streptavidin, which can hold the antibodies. Composed of a polymer compound made from corn, the nanofibers could be incorporated into conventional paper products to keep costs low. Nanofibers, with diameters near 100 nanometers (a nanometer is one-billionth of a meter, or about three times the diameter of an atom), provide extremely large surface areas for sensing and increased absorbency compared with conventional fibers.

Story at Cornell…

Justin Barad

Justin Barad is a board eligible pediatric orthopaedic surgeon. He did his fellowship at Boston Children's Hospital in the Harvard Combined Orthopaedic Surgery program and his residency at UCLA. He is also the Founder and CEO of Osso VR, a clinically validated surgical simulation platform. His interests include Virtual/Augmented Reality, robotics, surgical navigation and 3D Printing/Scanning, He is always looking to discuss the latest and greatest in medtech. He has been writing for Medgadget about medical technology since 2006 and also has several research publications and presentations.

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