TITLE

Conductivity of macromolecular networks measured by electrostatic force microscopy

AUTHOR(S)
Lei, C. H.; Das, A.; Elliott, M.; Macdonald, J. E.
PUB. DATE
July 2003
SOURCE
Applied Physics Letters;7/21/2003, Vol. 83 Issue 3, p482
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High-resolution electrostatic force microscopy (EFM)-phase measurements are reported on molecular networks of semiconductor polymer poly-hexylthiophene (P3HT) and DNA molecules. A lateral resolution of better than 20 nm is demonstrated in EFM-phase images of the P3HT network by detecting the phase shift of the tip along the molecules under electrical bias. Strands of l-DNA are shown to be highly insulating in comparison to the semiconductor polymer P3HT, with a minimum resistance of ∼1 × 10[SUP7]V cm.
ACCESSION #
10281605

 

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