Photonic crystal sensor
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United States of America Patent
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Mar 4, 2014
Grant Date -
Jan 5, 2012
app pub date -
Mar 24, 2010
filing date -
Mar 24, 2009
priority date (Note) -
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Abstract
This invention relates to an optical sensor element comprising a photonic crystal constituted by a membrane of a chosen transparent material, the membrane being provided with a number of defined openings in a chosen pattern, the pattern being adapted to provide resonance at a chosen wavelength or range of wavelengths, wherein said openings are provided with a reactive material acting as a receptor for a chosen type of molecules, e.g. proteins, the presence of which alters the resonance and/or scattering conditions in the sensor element thus altering the amount of light propagating out of the membrane plane.
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