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) SAW devices A (uncoated), B (conventional Pt/ZnO layer) having a chemical recognition layer between two sets of IDTs and device C (layered Pt/ZnO) which has a sensor layer extended on IDTs; (b) Sensor response of three devices A, B and C measured at room temperature and relative humidity of 30% for H2 gas (0–1%). Adapted with permission from [76], copyright (2012) Elsevier.
