Figure 2.

Time-dependent PZT voltage measured for composite porous silicon-liquid structure for liquids with different viscosities. Porosity of the used porous Si layer is 65% and its thicknesses are (a) 50 and (b) 30 μm

Andrusenko et al. Nanoscale Research Letters 2012 7:411   doi:10.1186/1556-276X-7-411
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