title: Carbon nanotube interaction with DNA.
abstract: We investigate a system consisting of B-DNA and an array of (10,0) carbon nanotubes periodically arranged to fit into the major groove of the DNA. We obtain an accurate electronic structure of the combined system, which reveals that it is semiconducting and that the bands on either end of the gap are derived exclusively from one of the two components. We discuss in detail how this system can be used as either an electronic switch involving transport through both components, or as a device for ultrafast DNA sequencing.
authors.affiliation: Division of Engineering and Applied Sciences, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Gang
authors.initials: G
authors.lastname: Lu
authors.forename: Paul
authors.initials: P
authors.lastname: Maragakis
authors.forename: Efthimios
authors.initials: E
authors.lastname: Kaxiras
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D039301:Computers, Molecular; D004247:DNA / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008956:Models, Chemical; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods; D037742:Nanotubes, Carbon / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure; D020411:Oligonucleotide Array Sequence Analysis / Q000295:instrumentation / Q000379:methods*; D017422:Sequence Analysis, DNA / Q000295:instrumentation / Q000379:methods*
chemical_list: D037742:Nanotubes, Carbon; D004247:DNA