Title :
Micro patterning of pH gradients by light-addressed electrolysis
Author :
Suzurikawa, J. ; Nakao, M. ; Kanzaki, R. ; Takahashi, H.
Author_Institution :
Univ. Tokyo, Tokyo
Abstract :
A novel method to optically address and control a microscale pH gradient with a light-addressable electrode substrate of hydrogenated amorphous silicon is proposed in this study. Fluorescence pH imaging is used to determine the pH gradient. The results demonstrate that light-addressed cathodic and anodic electrolysis can generate various patterns of pH gradients with a high spatial resolution and position selectivity.
Keywords :
amorphous semiconductors; electrochemical electrodes; electrolysis; elemental semiconductors; fluorescence; hydrogen; pH; silicon; spectrochemical analysis; Si:H; anodic electrolysis; cathodic electrolysis; fluorescence pH imaging; hydrogenated amorphous silicon; light-addressed electrolysis; pH gradient micropatterning; Biomedical optical imaging; Electrochemical processes; Electrodes; Fluorescence; Lighting; Optical buffering; Optical control; Optical films; Spatial resolution; Substrates;
Conference_Titel :
Microprocesses and Nanotechnology, 2007 Digest of papers
Conference_Location :
Kyoto
Print_ISBN :
978-4-9902472-4-9
DOI :
10.1109/IMNC.2007.4456332
