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High Sensitivity Plastic-Substrate Photonic Crystal Biosensor

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4 Author(s)
Block, Ian D. ; Univ. of Illinois at Urbana-Champaign, Urbana, IL ; Pineda, M. ; Choi, C.J. ; Cunningham, B.T.

A photonic crystal biosensor incorporating a nanomolded porous dielectric is fabricated for the first time on a flexible polysulfone substrate. The plastic substrate necessitates several changes to the fabrication procedure, including reduced processing temperatures. The resulting structure shows excellent response uniformity across a large area in the steady state as well as for perturbations of the bulk and near-surface dielectric permittivity. Kinetic binding data for a representative biomolecular assay demonstrate robust sensor operation.

Published in:

Sensors Journal, IEEE  (Volume:8 ,  Issue: 9 )