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Optical whispering galleries can also be used to detect airborne particles and viruses.
Other National Science Foundation-funded engineers can use whispering gallery modes to detect airborne viruses. Any particles, including viruses and biomolecules, within the gallery will scatter the light, and a small device registers the presence and characteristics of the particle. Learn more about optical whispering galleries: nationalsciencefoundation.tumblr.com.
Credit: Lan Yang, Nano/Micro Photonics Laboratory, Electrical and Systems Engineering Department, Washington University
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