Whispering-gallery-mode (WGM) microresonators are opening up many new research directions that enable the detection of proteins, enzymes and DNA, down to single molecules. A new class of sensors makes use of active microresonators to drastically expand the functionality and range of WGM sensor applications, especially for biological and chemical assays. We review the most recent advances of WGM microlasers for biosensing and provide an outlook on exciting new research directions and emerging WGM sensor applications.
source https://phys.org/news/2021-03-biosensing-whispering-gallery-mode-lasers.html
