Working principle of the self-referencing strategy (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Working principle of the self-referencing strategy

Caption

Schematic of microbubble sensors for in operando monitoring of phase transition dynamics. Inset: Variation of WGM spectra correlated to the mesoscopic structures of PNIPA, where the cyclic phase transition changing between hydrophilic state and hydrophobic state. The resonance shift of reference mode mainly arises from the temperature changes denoted as ∆λR, while the resonance shift of sensing mode ∆λS is caused by the thermo-optic effect ∆λT and intrinsic refractive index change ∆λn of PNIPA.

Credit

by Da-Quan Yang, Jin-hui Chen, Qi-Tao Cao, Bing Duan, Hao-Jing Chen, Xiao-Chong Yu, and Yun-Feng Xiao

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License

CC BY

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