DNA-controlled excitonic switches.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22401838.
- Also identified by DOI 10.1021/nl3004336 and PMC identifier 3324986.
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Abstract
Fluorescence resonance energy transfer (FRET) is a promising means of enabling information processing in nanoscale devices, but dynamic control over exciton pathways is required. Here, we demonstrate the operation of two complementary switches consisting of diffusive FRET transmission lines in which exciton flow is controlled by DNA. Repeatable switching is accomplished by the removal or addition of fluorophores through toehold-mediated strand invasion. In principle, these switches can be networked to implement any Boolean function.
Medical subject headings
- DNA