2006Nano Letters

ZnO Nanobelt/Nanowire Schottky Diodes Formed by Dielectrophoresis Alignment across Au Electrodes

Chang Shi Lao, Jin Liu, Puxian Gao, Liyuan Zhang, Dragomir Davidovic, Rao Tummala, Zhong L. Wang

Nano Letters · 6, 263-266 (2006)

**AI thematic illustration**Concept artwork created for this paper.

Introduction

Dielectrophoresis aligns individual ZnO nanobelts or nanowires across pairs of gold electrodes. The resulting devices rectify current, with forward-to-reverse current ratios reaching about 2,000; measurements extend to low temperatures.

A closer reading

Rectification with gold on both sides draws attention to how the contacts were made. The authors propose an asymmetry between the two interfaces, so the measured current–voltage curve should not be read as a property of the ZnO wire alone.