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Integrated optical circuits, including microring resonator elements (MRR), provide a sensitive, specific, and reliable technology platform for the development of compact and smart microsystems for sensing applications, for example, chemical and label‐free biochemical analysis as ultra‐small MRRs feature extraordinary sensitivity to changes of environmental parameters. Some basic features of MRRs and...
A silicon ring resonator is coated with receptor molecules for selective enrichment of TNT. Upon intercalation of TNT, changes in effective refractive index lead to a shift in resonance frequency which can accurately be determined.
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