Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Universal Approach to Electrically Connecting Nanowire Arrays Using Nanoparticles Application to a Novel Gas Sensor Architecture

Published

Author(s)

Prahalad M. Parthangal, Richard E. Cavicchi, Michael R. Zachariah

Abstract

We report on a novel, in-situ approach toward connecting and electrically contacting vertically aligned nanowire arrays using conductive nanoparticles. The utility of the approach is demonstrated by development of a gas-sensing device employing this nano-architecture. Well-aligned, single-crystalline zinc oxide nanowires were grown through a direct thermal evaporation process at 550 C on gold catalyst layers. Electrical contact to the top of the nanowire array was established by creating a contiguous nanoparticle film through electrostatic attachment of conductive gold nanoparticles exclusively onto the tips of nanowires. A gas-sensing device was constructed using such an arrangement and the nanowire assembly was found to be sensitive to both reducing (methanol) and oxidizing (nitrous oxides) gases. This assembly approach is amenable to any nanowire array for which a top contact electrode is needed.
Citation
Nanotechnology
Volume
17
Issue
15

Keywords

assembly, contacts, nanoparticles, nanowire, ZnO

Citation

Parthangal, P. , Cavicchi, R. and Zachariah, M. (2006), A Universal Approach to Electrically Connecting Nanowire Arrays Using Nanoparticles Application to a Novel Gas Sensor Architecture, Nanotechnology, [online], https://doi.org/10.1088/0957-4484/17/15/029 (Accessed April 15, 2024)
Created August 14, 2006, Updated November 10, 2018