Porous Silicon Microcavities for Biosensing Applications
Read full article onlineFull Article
The development of rapid, label-free methods for detecting pathogenic organisms is of intense interest, both because of the scientific challenge it represents and because of its potential importance to society. Recently, several groups have begun examining the suitability of nanocrystalline silicon (or, simply, “porous silicon”) as a substrate material for the construction of such sensors. Our own efforts have focused on the photoluminescence of porous silicon microcavities, appropriately derivatized with probe molecules for a variety of model biopolymers, viruses, and bacteria.