Nano Sensors Group | Illinois

Nano Sensors Group in the News

2006

  • July 10, 2006 - Nano Sensors Group at UIUC demonstrates biosensor operating at ultraviolet wavelenghts for improved surface sensitivity.

    A paper entitled “UV-Wavelength Photonic-Crystal Biosensor with Enhanced Surface-to-Bulk Sensitivity Ratio” by Nikhil Ganesh, Ian Block, and Brian Cunningham was published in the July 10, 2006 issue of Applied Physics Letters, and featured on the cover of the journal.  The paper describes the design, fabrication, and testing of a photonic crystal  biosensor narrowband reflectance filter with a resonant wavelength of 405 nm that has 4.5x higher signal-to-noise ratio than similar sensors with resonances in the infrared portion of the spectrum.  The new device design is especially important for detection of small molecules or low concentration analytes where larger signals enable detection of biomolecular intereactions that are not otherwise possible to observe.