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Relationship between specific surface area and pore dimension of high porosity nanoporous silicon – Model and experiment
Author(s) -
du Plessis Monuko
Publication year - 2007
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622237
Subject(s) - nanoporous , gravimetric analysis , porosity , materials science , specific surface area , porous silicon , crystallite , etching (microfabrication) , silicon , layer (electronics) , composite material , chemical engineering , nanotechnology , chemistry , metallurgy , catalysis , organic chemistry , engineering
The structural properties of high porosity nanoporous silicon were researched with the manufacture of integrated nano‐explosive devices in mind. A three‐dimensional nanoporous layer structural model, consisting of cylindrical crystallites, is proposed. Model parameters are derived from gravimetric techniques and the electrochemical etching of high porosity nanoporous silicon layers. A gravimetric experimental technique is described whereby the pore dimensions and specific surface area of nanoporous regions can be determined. An inverse relationship between pore size and specific surface area is found, with a constant specific surface area times pore diameter product. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)