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ACS Nano. 2008 Feb;2(2):191-6. doi: 10.1021/nn700240z.

Nanoscale memory characterization of virus-templated semiconducting quantum dots.

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  • 1Department of Bioengineering, University of California, Riverside, California 92521, USA.


We have developed a substrate-based bottom-up approach to assemble two different color emitting quantum dots (CdSe/ZnS core/shell QDs) on the surface of a novel virus mutant, CPMV-T184C. Electrical characteristics of individual hybrids were investigated by conductive atomic force microscopy for potential digital memory applications (i.e., RAM). These individual 40 nm CPMV-QD(1,2) hybrids exhibited reversible bistable electrical behavior during repeatable writing-reading-erasing processes at the nanoscale.

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