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Download fileAn All-Optical Excitonic Switch Operated in the Liquid and Solid Phases
journal contribution
posted on 2019-02-13, 00:00 authored by Donald L. Kellis, Christopher Sarter, Brittany L. Cannon, Paul H. Davis, Elton Graugnard, Jeunghoon Lee, Ryan D. Pensack, Theresa Kolmar, Andres Jäschke, Bernard Yurke, William B. KnowltonThe
excitonic circuitry found in photosynthetic organisms suggests an
alternative to electronic circuits, but the assembly of optically
active molecules to fabricate even simple excitonic devices has been
hampered by the limited availability of suitable molecular scale assembly
technologies. Here we have designed and operated a hybrid all-optical
excitonic switch comprised of donor/acceptor chromophores and photochromic
nucleotide modulators assembled with nanometer scale precision using
DNA nanotechnology. The all-optical excitonic switch was operated
successfully in both liquid and solid phases, exhibiting high ON/OFF
switching contrast with no apparent cyclic fatigue through nearly
200 cycles. These findings, combined with the switch’s small
footprint and volume, estimated low energy requirement, and potential
ability to switch at speeds in the 10s of picoseconds, establish a
prospective pathway forward for all-optical excitonic circuits.
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all-optical excitonic switchcyclic fatigueall-optical excitonic circuitsscale assembly technologies200 cyclesphotochromic nucleotide modulatorsAll-Optical Excitonic Switch Operatednanometer scale precisionphotosynthetic organismsDNA nanotechnologyexcitonic devicesexcitonic circuitrySolid Phasesenergy requirement