Can we make porous silicon biosensors more sensitive? Modeling and limitations

Sofia Arshavsky-Graham, Evgeniy Boyko, Rachel Salama, Ester Segal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present a mathematical model, which describes the complex mass transport phenomena and reaction kinetics in porous silicon (PSi) optical transducers, and reveal that the interrelated effect of bulk and hindered diffusion is the main limiting factor in these biosensing schemes. Thus, without significantly accelerating the mass transport to and within the nanostructure, the target capture performance of these biosensors would be comparable, regardless of the nature of the capture probe-target pair. Based on the model results, we suggest rules of thumb for increasing their performance.

Original languageEnglish
Title of host publicationMicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences
Pages613-614
Number of pages2
ISBN (Electronic)9781733419017
StatePublished - 2020
Event24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020 - Virtual, Online
Duration: 4 Oct 20209 Oct 2020

Publication series

NameMicroTAS 2020 - 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences

Conference

Conference24th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2020
CityVirtual, Online
Period4/10/209/10/20

Keywords

  • Aptamer
  • Biosensor
  • Hindered diffusion
  • Mass transfer
  • Porous silicon

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Chemical Engineering (miscellaneous)
  • Bioengineering
  • Control and Systems Engineering

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