Hydrogel‐Supported Optical‐Microcavity Sensors | Zendy

DeLouise L. A. | Zendy; Fauchet P. M. | Zendy; Miller B. L. | Zendy; Pentland A. A. | Zendy

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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.

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