Detection of per-and polyfluoroalkyl water contaminants with a multiplexed 4D microcavities sensor  

作　　者：ANTON V.SAETCHNIKOV ELINA A.TCHERNIAVSKAIA VLADIMIR A.SAETCHNIKOV ANDREAS OSTENDORF 

机构地区：[1]Chair of Applied Laser Technologies,Ruhr University Bochum,44801 Bochum,Germany [2]Physics Department,Belarusian State University,220030 Minsk,Belarus [3]Radio Physics Department,Belarusian State University,220064 Minsk,Belarus

出　　处：《Photonics Research》2023年第11期I0025-I0033,共9页光子学研究（英文版）

基　　金：Bundesministerium für Bildung und Forschung(03VP08220)。

摘　　要：The per-and polyfluoroalkyl substances(PFAS)are a group of organofluorine chemicals treated as the emerging pollutants that are currently of particularly acute concern.These compounds have been employed intensively as surfactants over multiple decades and are already to be found in surface and ground waters at amounts sufficient to have an effect on human health and ecosystems.Because of the carbon–fluorine bonds,the PFAS have an extreme environmental persistence and their negative impact accumulates with further production and penetration into the environment.In Germany alone,more than thousands of sites have been identified as contaminated with PFAS;thus,timely detection of PFAS residue is becoming a high priority.In this paper,we report on the high performance optical detection method based on whispering gallery mode(WGM)microcavities applied for the first time to detect PFAS contaminants in aqueous solutions.A self-sensing boosted 4D microcavity fabricated with two-photon polymerization is employed as an individual sensing unit.In an example of the multiplexed imaging sensor with multiple hundreds of simultaneously interrogated microcavities we demonstrate the possibility to detect the PFAS chemicals representatives at a level down to 1 ppb(parts per billion).

关 键 词：FLUORINE hundreds BECOMING 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] X832[自动化与计算机技术—控制科学与工程]