title: Silk protein based hybrid photonic-plasmonic crystal.
abstract: We propose a biocompatible hybrid photonic platform incorporating a 3D silk inverse opal (SIO) crystal and a 2D plasmonic crystal formed on the top surface of the SIO. This hybrid photonic-plasmonic crystal (HPPC) structure simultaneously exhibits both an extraordinary transmission and a pseudo-photonic band-gap in its transmission spectrum. We demonstrate the use of the HPPC as a refractive index (RI) sensor. By performing a multispectral analysis to analyze the RI value, a sensitivity of 200,000 nm·Δ%T/RIU (refractive index unit) is achieved.
authors.affiliation: Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA.
authors.forename: Sunghwan
authors.initials: S
authors.lastname: Kim
authors.forename: Alexander N
authors.initials: AN
authors.lastname: Mitropoulos
authors.forename: Joshua D
authors.initials: JD
authors.lastname: Spitzberg
authors.forename: David L
authors.initials: DL
authors.lastname: Kaplan
authors.forename: Fiorenzo G
authors.initials: FG
authors.lastname: Omenetto
mesh_terms: D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D012031:Refractometry / Q000295:instrumentation*; D047011:Silk / Q000737:chemistry* / Q000648:ultrastructure*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D047011:Silk