Figure 2 | Scientific Reports

Figure 2

From: A pressure driven electric energy generator exploiting a micro- to nano-scale glass porous filter with ion flow originating from water

Figure 2

Fabrication and structure investigation of porous glass filters. (a) Fabrication procedure of glass filters. (b) Carbon mold to fabricate glass filters. (c) A hole in the mold is filled with glass powder. (d) Setup in a furnace with an alumina weight. (e) Fabricated glass filter. (f) SEM images of porous glass filter surfaces after sintering at the temperature indicated at the top of each image. (g) Results of mercury porosimetry of the porous glass filters sintered at various temperatures. Black and red lines indicate pore volume per mass (V) and pore radius (R) distribution (derivation of V by R), respectively. (h) SEM images of the porous glass filter surfaces sintered at 700 °C using ground glass powder and the milling time indicated at the top of each image. (i) Results of mercury porosimetry of the porous glass filters sintered at 700 °C using ground glass powder and the milling time indicated at the top of each image. Scale bars are shown in SEM images of (f) and (h).

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