Article ID Journal Published Year Pages File Type
743139 Sensors and Actuators B: Chemical 2009 6 Pages PDF
Abstract

A novel sensor based on the PPy nanowire arrays with high density, small diameter (about 50 nm) presented a significantly high surface-to-volume ratio. Conducting polypyrrole (PPy) nanowire arrays were synthesized by electropolymerization in the anodic aluminum oxide (AAO) template which was fabricated by two-step anodizing process. Then, two sides of the PPys/AAO were pasted by Si substrates and the AAO template was etched by HF acid. At last, the gold wires were attached on Si substrates, and the sensor came into being. The sensor was sensitive to ammonia at room temperature and showed relatively high response in low concentration and comparatively short response and recovery time.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
Authors
, , , , , , , ,