PH Sensing Based on Thin Film Hydrogel Coated Silicon Gratings

被引：0

作者：

Mudraboyina, Anil Kumar ^{[1
]}

Markowski, Jan ^{[1
]}

Sabarinathan, Jayshri ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Elect & Comp Engn, London, ON N6A 5B9, Canada

来源：

2010 IEEE SENSORS | 2010年

关键词：

SENSOR;

D O I：

10.1109/ICSENS.2010.5689921

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrate a pH sensor based on silicon gratings coated with thin film of hydrogels. The silicon gratings have optical sensitivities around 197nm/RIU in detecting refractive index change and 0.824nm per nanometer of thickness change of hydrogel on the surface of silicon gratings. Silicon gratings were silanized so that the hydrogel is chemically bound to its surface. Normal transmission measurement shows the red shift of 155nm in resonant peak for a thin film coating of 187.9nm of hydrogel over them.

引用

页码：1701 / 1705

页数：5

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