Optimisation of nanostructured porous silicon surface chemistry towards biophotonic sensors

Kristopher A. Kilian, Till Böcking, Suhrawardi Ilyas, Katharina Gaus, Michael Gal, J. Justin Gooding

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Narrow line-width porous silicon rugate filters, fabricated by electrochemical etching of crystalline silicon with sinusoidal variation in the current density, provide a class of optical material that may find utility in biosensing applications. Herein, we demonstrate the use of hydrosilylation chemistry to passivate the filters from oxidation, and to provide coupling points for attachment of biorecognition species. Porous silicon rugate filters were derivatised with two functional alkenes and were characterized using Fourier Transform infrared spectroscopy (FTIR) concurrently with analysis of the reflectivity spectrum throughout organic derivatisation. The reproducible optical signals upon chemical and biological modification may provide a robust methodology for sensing of biological species and open the way for a new class of optical biosensor.

Original languageEnglish (US)
Title of host publicationProceedings of the 2006 International Conference on Nanoscience and Nanotechnology, ICONN
Pages486-489
Number of pages4
DOIs
StatePublished - Dec 1 2006
Event2006 International Conference on Nanoscience and Nanotechnology, ICONN 2006 - Brisbane, Australia
Duration: Jul 3 2006Jul 6 2006

Publication series

NameProceedings of the 2006 International Conference on Nanoscience and Nanotechnology, ICONN

Other

Other2006 International Conference on Nanoscience and Nanotechnology, ICONN 2006
Country/TerritoryAustralia
CityBrisbane
Period7/3/067/6/06

Keywords

  • Biophotonics
  • Biosensor
  • Hydrosilylation
  • Porous silicon
  • Rugate filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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