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Hydrogel‐Supported Optical‐Microcavity Sensors
Author(s) -
DeLouise L. A.,
Fauchet P. M.,
Miller B. L.,
Pentland A. A.
Publication year - 2005
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200500261
Subject(s) - materials science , refractive index , porous silicon , porosity , matrix (chemical analysis) , optoelectronics , nanotechnology , membrane , silicon , optical microcavity , sensitivity (control systems) , composite material , optics , electronic engineering , laser , physics , biology , genetics , engineering
A porous‐silicon microcavity membrane sensor maintains good sensitivity (see Figure) and shows long‐term stability when embedded in a hydrogel matrix. The microcavity is sensitive to a 10 4 –10 –3 change in refractive index and can detect the binding of small molecules, proteins, etc., when they cause a sufficient change in the matrix porosity. This work represents a significant step towards realizing a “smart bandage” concept for wound‐care management.