Grating-based nanophotonic structured configurations for biosensing

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

4 Scopus citations


New investigations are carried out on the optical spectral response of grating based nanophotonic structures and their sensitivity to refractive index variations of a liquid like analyte embedded within and on top of nanometer-sized grating structure. The phenomena examined are guided wave resonances in dielectric grating/waveguide structures, respectively, and scatterometric effects in non-resonant structures. Both resonant and non-resonant configurations are shown to allow refractive index detection limit on the level of 10-6 - 10-5. The spectroscopic scatterometry approach offers also specificity in particular when the analyzed materials are dispersive and absorptive. The planarity and operation at normal incidence as well as possibility of fabrication using silicon technologies are advantages for these structures that permit building arrays of sensors for biochip applications.

Original languageEnglish
Title of host publicationBiosensing
StatePublished - 21 Nov 2008
EventBiosensing - San Diego, CA, United States
Duration: 12 Aug 200814 Aug 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


Country/TerritoryUnited States
CitySan Diego, CA


  • Gratings
  • Guided wave resonance
  • Nano-photonics
  • Optical biosensors
  • Plasmonics
  • Scatterometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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