Iridescent Photonic Nano-Silica for Chemical and Biological Sensing

Author

Chyan, J.Y. ; Yeh, J. Andrew

Author_Institution

Inst. of Microelectromech. Syst., Pittsburgh

fYear

2007

fDate

Aug. 12 2007-July 16 2007

Firstpage

41

Lastpage

42

Abstract

Iridescent photonic nano-silica is proposed for chemical and biological sensing. The iridescent photonic nano-silica consists of periodically low and high refractive index nano-silica layers. Its optical characteristics can be controlled by electrochemical etching and thermal oxidation. The validity and the sensitivity of the proposed iridescent photonic nano-silica are demonstrated for organic solution and proteins at 20 pg/ml concentrations.

Keywords

biosensors; chemical sensors; etching; nanostructured materials; oxidation; proteins; refractive index; silicon compounds; SiO₂; biological sensor; chemical sensor; electrochemical etching; iridescent photonic nanosilica; organic solution; proteins; refractive index nanosilica layers; thermal oxidation; Biomedical optical imaging; Chemicals; Etching; Nanobioscience; Optical control; Optical refraction; Optical sensors; Optical variables control; Oxidation; Refractive index; biological; chemical; electrochemical; nano-silica; photonic; sensing;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical MEMS and Nanophotonics, 2007 IEEE/LEOS International Conference on

Conference_Location

Hualien

Print_ISBN

978-1-4244-0641-8

Type

conf

DOI

10.1109/OMEMS.2007.4373830

Filename

4373830