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Enhanced Nanoparticle Detection with Liquid Droplet Resonators
Whispering gallery mode particle sensing experiments are commonly performed with solid resonators, whereby the sensing volume is limited to the weak evanescent tail of the mode near the resonator surface. In this work we ...
Direct Sensing in Liquids Using Whispering-Gallery-Mode Droplet Resonators
Liquid droplets suspended by the tip of a thin wire, a glass capillary, or a needle form high-Q optical resonators, thanks to surface tension. Under gravity equilibrium conditions, the maximum drop diameter is approximately ...