Whispering gallery mode resonators in continuous flow: spectral assignments and sensing with monodisperse microspheres

Autor:	Bryan C. Paulus, Jenny K. Banh, Kirk D. Rector, Benjamin W. Stein, Laura M. Lilley
Rok vydání:	2022
Předmět:	Refractometry General Chemical Engineering General Engineering Microspheres Analytical Chemistry
Zdroj:	Analytical Methods. 14:1690-1697
ISSN:	1759-9679 1759-9660
DOI:	10.1039/d2ay00181k
Popis:	Whispering gallery mode resonator (WGMR) microspheres yield highly structured optical spectra that are extremely sensitive to their environment and are of intense interest for use in a variety of sensing applications. Many efforts to leverage the unique sensitivities of WGMRs have relied on stringent experimental requirements to correlate specific spectral shifts/changes to an analyte/stimulus such as (1) precise positional knowledge, (2) reference spectra for each microsphere, and (3) high mechanical stability. Consequently, these factors can hinder adequate mixing or incorporation of analytes and can create challenges for remote sensing. This work describes a continuous flow technique for measuring whispering gallery mode (WGM) spectra of dye-doped microspheres suspended in solution and an accompanying analysis scheme that can extract the local refractive index without
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92456b7ed69158e04be30d0c0b9b3b48 https://doi.org/10.1039/d2ay00181k Zobrazit plný text záznamu