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Conference 11953 > Paper 11953-7
Paper 11953-7

Recent advances in microtoroid optical molecular sensing technology for biomedical and environmental applications


Sensitive, label-free, and selective sensors are of importance for a wide variety of applications, in particular medical diagnostics, and environmental monitoring. Microtoroid optical resonators, when combined with frequency locking, balanced detection, and data processing techniques, are capable of single molecule detection. We have developed such a system called FLOWER (frequency locked optical whispering evanescent resonator). We discuss our latest work on using FLOWER for a variety of applications including medical diagnostics for ovarian cancer and Alzheimer’s disease, chemical threat sensing, and drug screening. In addition, we discuss our next generation sensing platforms.


Wyant College of Optical Sciences (United States)
Judith Su ( is an Assistant Professor of Optical Sciences and Biomedical Engineering at the University of Arizona. She is also a Visiting Associate at Caltech, on the Editorial Advisory Board of Translational Biophotonics, a member of the Scientific Advisory Board of Femtorays Technologies, and on the Board of Scientific Counselors for the National Institute for Occupational Safety and Health (NIOSH). Judith received her B.S. and M.S. from MIT in Mechanical Engineering and her Ph.D. from Caltech in Biochemistry & Molecular Biophysics. Her background is in sensing, imaging, microfabrication, and optical instrument building for biological and medical applications. She is a recipient of an NIH R35 Outstanding Investigator Award and an American Society of Laser Surgery and Medicine Young Investigator Award. She was a Siegman International School on Lasers Lecturer and is currently a Scialog Fellow, a senior member of OSA, and a full member of Sigma Xi.
Wyant College of Optical Sciences (United States)