University of California, Riverside

Department of Electrical and Computer Engineering



Graduate student Chunglin Tsai uses plant virus to create memory chip


Graduate student Chunglin Tsai uses plant virus to create memory chip
 
EE graduate student Chunglin Tsai working with ME professor Cengiz Ozkan and co-workers from UCLA reported in Nature Nanotechnology that Tobacco Mosaic Viruses (TMV) coated with platinum nanoparticles embedded in a polymer and sandwiched between two electrodes act as a high speed static memory device. It operates by conductance switching with an on/off ratio larger than 3 orders of magnitude.  The mechanism is based on charge-trapping on the nanoparticles and quantum tunneling.  http://www.nature.com/nnano/journal/v1/n1/pdf/nnano.2006.55.pdf
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