Title :
Iridescent Photonic Nano-Silica for Chemical and Biological Sensing
Author :
Chyan, J.Y. ; Yeh, J. Andrew
Author_Institution :
Inst. of Microelectromech. Syst., Pittsburgh
fDate :
Aug. 12 2007-July 16 2007
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;
Conference_Titel :
Optical MEMS and Nanophotonics, 2007 IEEE/LEOS International Conference on
Conference_Location :
Hualien
Print_ISBN :
978-1-4244-0641-8
DOI :
10.1109/OMEMS.2007.4373830
