Figure 11.
Sensor response to CH4 gas with different concentrations, from 2.5 ppm to 100 ppm, at 7.8 μm: (a) sensor response; and (b) polynomial fit (R-Square = 0.997).
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.