Journal
APPLIED PHYSICS LETTERS
Volume 99, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3671153
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Funding
- National Science Council in Taiwan [NSC99-2221-E-007-083 -]
- KIT Excellence Initiative, DFG-Centre for Functional Nanostructures [A5.7]
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We demonstrate a photoinduced write-once read-many-times (WORM) organic memory device based on DNA biopolymer nanocomposite. The device consists of a single biopolymer layer sandwiched between electrodes, in which electrical bistability is activated by in situ formation of silver nanoparticles embedded in biopolymer upon light irradiation. The device exhibits a switching effect to high conductivity above a threshold of 2.6V and a good retention property. This facile technique, taking advantage of DNA's affinity for metals and solution processing, can optically manipulate the properties of DNA nanocomposite thin films, which holds promise for optical storage and plasmonic applications. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3671153]
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