Photonic crystal slab sensor with enhanced surface area

被引：91

作者：

Kang, Christopher ^{[1
]}

Phare, Christopher T. ^{[2
]}

Vlasov, Yurii A. ^{[3
]}

Assefa, Solomon ^{[3
]}

Weiss, Sharon M. ^{[1
,2
,4
]}

机构：

[1] Vanderbilt Univ, Interdisciplinary Grad Program Mat Sci, Nashville, TN 37235 USA

[2] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA

[3] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10536 USA

[4] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 26期

基金：

美国国家科学基金会;

关键词：

SILICON-ON-INSULATOR; WAVE-GUIDES; PROTEIN-DETECTION; ELECTROMAGNETIC-WAVES; RING-RESONATOR; MICROCAVITY; NANOCAVITY; BIOSENSOR; IMMUNOSENSOR;

D O I：

10.1364/OE.18.027930

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, we demonstrate improved molecular detection sensitivity for silicon slab photonic crystal cavities by introducing multiple-hole defects (MHDs), which increase the surface area available for label-free detection without degrading the quality factor. Compared to photonic crystals with L3 defects, adding MHDs into photonic crystal cavities enabled a 44% increase in detection sensitivity towards small refractive index perturbations due to surface monolayer attachment of a small aminosilane molecule. Also, photonic crystals with MHDs exhibited 18% higher detection sensitivity for bulk refractive index changes. (C) 2010 Optical Society of America

引用

页码：27930 / 27937

页数：8

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