Insulating Behavior of [Formula presented]-DNA on the Micron Scale

Y. Zhang, R. H. Austin, J. Kraeft, E. C. Cox, N. P. Ong

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We have investigated the electrical conductivity of [Formula presented]-DNA using DNA covalently bonded to Au electrodes. Thiol-modified dTTP was incorporated into the “sticky” ends of bacteriophage [Formula presented]-DNA using DNA polymerase. Two-probe measurements on such molecules provide a hard lower bound for the resistivity [Formula presented] at bias potentials up to 20 V, in conflict with recent claims of moderate to high conductivity. By direct imaging, we show that the molecules are present after the measurements. We stress the importance of eliminating salt residues in these measurements.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number19
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Insulating Behavior of [Formula presented]-DNA on the Micron Scale'. Together they form a unique fingerprint.

Cite this