Fabrication of Porous Silicon Based Humidity Sensing Elements on Paper

Figure 2

(a) DSC curves for four different flexible substrates. The solid curves were measured during the first heating cycle, and the dashed red curves were measured during cooling. The dotted dashed curves were measured for the second heating cycle. STA results for the two paper substrates: (b) heat flow curves and (c) the corresponding TG curves. The arrow in the heat flow curve points out the exothermic peak that is present only in the curves measured for the multilayer coated paper substrate. (d) Similar exothermic dip is also found from the first heating cycle measured for kaolin powder with DSC.

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(b)

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