Research Article

A Robust Fiber Bragg Grating Hydrogen Gas Sensor Using Platinum-Supported Silica Catalyst Film

Figure 9

Comparison of microscopic photographs of the film surface immobilized on Ti substrate (a) with that on glass substrate (b) and XRD pattern of catalyst film on the Ti substrate (c) (repeated catalyst coating: 20 times).
(a)
(b)
(c)