Particle shape analysis using whispering gallery mode polarization sensing (Conference Presentation)

Cheng Li; Jiang Qiu; Adley Gin; Phuong-Diem Nguyen; Judith Su

doi:10.1117/12.2545252

10 March 2020 Particle shape analysis using whispering gallery mode polarization sensing (Conference Presentation)

Cheng Li, Jiang Qiu, Adley Gin, Phuong-Diem Nguyen, Judith Su

Proceedings Volume 11254, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVII; 1125404 (2020) https://doi.org/10.1117/12.2545252
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Whispering-gallery mode (WGM) microtoroid optical resonators have been used for highly sensitive biological and chemical sensing. With the help of auto-balanced detection and data processing techniques, frequency locked optical whispering evanescent resonator (FLOWER) has successfully reduced external noise and achieved detection of single macromolecules. FLOWER, however, can only analyze the size of particles and not their shape. To determine the shape of non-spherical particles interacting with different polarized WGM modes, we built a dual-FLOWER system to perform multi-mode locking. We demonstrate the ability of this system to detect particle shape by detecting gold nanorods and spheres.

Conference Presentation

Citation Download Citation

Cheng Li, Jiang Qiu, Adley Gin, Phuong-Diem Nguyen, and Judith Su "Particle shape analysis using whispering gallery mode polarization sensing (Conference Presentation)", Proc. SPIE 11254, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XVII, 1125404 (10 March 2020); https://doi.org/10.1117/12.2545252

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