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Label‐Free Glucose Sensing Using Chip‐Scale Mid‐Infrared Integrated Photonics
Author(s) -
Lin Pao Tai,
Lin HaoYu Greg,
Han Zhaohong,
Jin Tiening,
Millender Rachel,
Kimerling Lionel C.,
Agarwal Anu
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600440
Subject(s) - materials science , silicon nitride , waveguide , optoelectronics , infrared , photonics , absorption (acoustics) , detection limit , attenuation , chip , silicon photonics , silicon , near infrared spectroscopy , scale (ratio) , optics , telecommunications , chemistry , physics , chromatography , quantum mechanics , computer science , composite material
A chip‐scale and label‐free glucose sensor is developed by utilizing mid‐IR silicon nitride waveguides. For a dry glucose covered waveguide, strong intensity attenuation is found at λ > 2.73 μm due to the OH stretches absorption. Using this characteristic spectrum, a glucose detection limit less than 0.5 ng is experimentally demonstrated.