Gelatin Used as a Transductor in an Optical Hygrometer Based on a Fabry-Perot Interferometer

<div>Interference line displacement as a function of RH (%). Film thickness in (a) 70 <i>μ</i>m, (b) 50 <i>μ</i>m, and (c) 20 <i>μ</i>m. Vertical error bars are 0.1 mm. There are no horizontal error bars because the electronic hygrometer had the reading till the first digit after the point or tenths of relative humidity integers.</div>

Advances in Materials Science and Engineering

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Figure 9

Figure 9: Gelatin Used as a Transductor in an Optical Hygrometer Based on a Fabry-Perot Interferometer 