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Thermal characterisation of (bio)polymers with a temperature-stabilised whispering gallery mode microsensor

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Kim,  Eugene       
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Foreman,  Matthew R.
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Baaske,  Martin D.
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Vollmer,  Frank
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Kim, E., Foreman, M. R., Baaske, M. D., & Vollmer, F. (2015). Thermal characterisation of (bio)polymers with a temperature-stabilised whispering gallery mode microsensor. Applied Physics Letters, 106(16): 161101. doi:10.1063/1.4918932.


Cite as: https://hdl.handle.net/21.11116/0000-0008-4D29-5
Abstract
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.