Conductivity of macromolecular networks measured by electrostatic force microscopy

被引：38
|
作者：
Lei, CH [1 ]
Das, A [1 ]
Elliott, M [1 ]
Macdonald, JE [1 ]
机构：
[1] Cardiff Univ, Dept Phys & Astron, Cardiff CF24 3YB, S Glam, Wales
来源：
APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 03期
关键词：
D O I：
10.1063/1.1592888
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 lambda-DNA are shown to be highly insulating in comparison to the semiconductor polymer P3HT, with a minimum resistance of similar to1x10(7) Omega cm. (C) 2003 American Institute of Physics.
引用
收藏
页码：482 / 484
页数：3
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