The surface area of a photonic crystal biosensor is greatly enhanced through the incorporation of a porous TiO2 film possessing the structure of nanorods into the device. The film is deposited by the glancing angle deposition technique in an e-beam evaporation system. The sensitivity of high surface area sensors is compared with sensors without the high surface area coating. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density.

Original languageEnglish (US)
Pages (from-to)279-284
Number of pages6
JournalSensors and Actuators, B: Chemical
Issue number1
StatePublished - Apr 14 2008


  • Biosensor
  • Glancing angle deposition
  • Nanostructure
  • Photonic crystal
  • Sensitivity
  • Surface area

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering


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