期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 11, 期 8, 页码 1105-1110出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/11/8/302
关键词
sol-gel glass; multiple-analyte sensors; carbon dioxide sensors; oxygen sensors; spin coating; CCD imaging
A dual-analyte optical chemical sensor platform based on the surface patterning of fluorescent dyes immobilized in sol-gel thin films is demonstrated as a proof of principle for a potential multi-analyte detection system with implications for lab-on-a-chip technology. A combination of hot embossing and an eccentric spin-coating technique was used to achieve discrete deposition of oxygen and carbon dioxide sensitive zones on a single waveguiding platform. Imaging of fluorescence from the oxygen and carbon dioxide sensing areas was performed using a low-cost CCD camera and fluorescence quenching on analyte exposure was characterized.
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