DNA-Controlled Excitonic Switches

详细信息    查看全文

• 作者：Elton Graugnard ; Donald L. Kellis ; Hieu Bui ; Stephanie Barnes ; Wan Kuang ; Jeunghoon Lee ; William L. Hughes ; William B. Knowlton ; Bernard Yurke
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：April 11, 2012
• 年：2012
• 卷：12
• 期：4
• 页码：2117-2122
• 全文大小：260K
• 年卷期：v.12,no.4(April 11, 2012)
• ISSN：1530-6992

文摘

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.

Keywords:

DNA; FRET; excitonic switch; molecular transmission line; molecular programming; Boolean logic