title: DNA-controlled excitonic switches.
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.
authors.affiliation: Department of Materials Science and Engineering, Boise State University, Boise, Idaho 83725, USA. EltonGraugnard@BoiseState.edu
authors.forename: Elton
authors.initials: E
authors.lastname: Graugnard
authors.forename: Donald L
authors.initials: DL
authors.lastname: Kellis
authors.forename: Hieu
authors.initials: H
authors.lastname: Bui
authors.forename: Stephanie
authors.initials: S
authors.lastname: Barnes
authors.forename: Wan
authors.initials: W
authors.lastname: Kuang
authors.forename: Jeunghoon
authors.initials: J
authors.lastname: Lee
authors.forename: William L
authors.initials: WL
authors.lastname: Hughes
authors.forename: William B
authors.initials: WB
authors.lastname: Knowlton
authors.forename: Bernard
authors.initials: B
authors.lastname: Yurke
mesh_terms: D004247:DNA / Q000737:chemistry*; D031541:Fluorescence Resonance Energy Transfer
chemical_list: D004247:DNA