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Schlagwörter:
LABEL-FREE MICROCAVITY; COMPENSATION; MICROSPHERE; RESONATORS; POLYMERS; SENSORSPhysics
Zusammenfassung:
In this work, we theoretically and experimentally investigate the thermal response of whispering gallery mode microresonators operating in an aqueous glycerol medium. Thermal stabilisation of the resonance wavelength is realised by appropriate choice of the resonator radius and glycerol concentration, with a 60 fold reduction in thermal sensitivity demonstrated. Finally, we employ our stabilised system to determine the thermal dependence of the molecular polarisability of adsorbed bovine serum albumin molecules and the refractive index of dextran and poly(diallyldimethylammonium chloride) coatings. (C) 2015 AIP Publishing LLC.
