R. Millar, U. G. K. Gallacher, M. Sorel, D. Paul, L. Baldassarre, M. Ortolani
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Molecular Fingerprint Sensing using Ge-on-Si Waveguides
Germanium-on-silicon, mid-infrared waveguides are used to demonstrate molecular fingerprint sensing of poly(methyl methacrylate) between 7.5 and 10 μm wavelength. The results are compared to Fourier transform infrared spectroscopy measurements, highlighting the potential of the platform for the identification of analytes.