Caged-Sphere Optofluidic Sensors: Whispering Gallery Resonators in Wicking Microfluidics.

ABSTRACT: The rapid development of optofluidic technologies in recent years has seen the need for sensing platforms with ease-of-use, simple sample manipulation, and high performance and sensitivity. Herein, an integrated optofluidic sensor consisting of a pillar array-based open microfluidic chip and caged dye-doped whispering gallery mode microspheres is demonstrated and shown to have potential for simple real-time monitoring of liquids. The open microfluidic chip allows for the wicking of a thin film of liquid across an open surface with subsequent evaporation-driven flow enabling continuous passive flow for sampling. The active dye-doped whispering gallery mode microspheres placed between pillars, avoid the use of cumbersome fibre tapers to couple light to the resonators as is required for passi

SUBMITTER: Riesen N 

PROVIDER: S-EPMC9185560 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature