Open AccessSilk protein based hybrid photonic-plasmonic crystal
Author(s) -
Sunghwan Kim,
Alexander N. Mitropoulos,
Joshua D. Spitzberg,
David L. Kaplan,
Fiorenzo G. Omenetto
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.008897
Subject(s) - photonic crystal , refractive index , plasmon , optics , materials science , photonics , optoelectronics , physics
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.