Porous silicon is an attractive platform for chemical and biomolecular sensing applications due to its very large reactive surface area that facilitates the capture of molecules, capability to selectively filter out contaminant molecules by size, amenability to microscale lithographic patterning, and compatibility with both traditional silicon microelectronics and lab-on-chip architectures. This presentation will discuss the fabrication, functionalization, and application of resonant porous silicon waveguides, Bloch surface wave structures, ring resonators, and photonic crystals for the detection of chemical and biological molecules including DNA, proteins, and toxins. Issues of efficient molecule infiltration and capture inside porous materials, probe molecule density, binding kinetics in nanoscale pores, and the importance of increasing light-matter interaction to improve detection sensitivity will be addressed.

Application of resonant porous silicon photonic structures for biosensing

248th National Meeting (2014)

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