Photoacoustic microfluidics based on all-optical detection

Jianpeng Cai; Hui Fang; Sheng Yan

doi:10.1117/12.2616464

8 July 2022 Photoacoustic microfluidics based on all-optical detection

Jianpeng Cai, Hui Fang, Sheng Yan

Proceedings Volume 12282, 2021 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 122821B (2022) https://doi.org/10.1117/12.2616464
Event: 2021 International Conference on Optical Instruments and Technology, 2022, Online Only

Abstract

Photoacoustic microfluidics emerges as a promising method for particle or droplet analysis. Here we propose a microfluidic chip design based on laser polarization-dependent reflection from the interface of an optical prism and the liquid, which can detect photoacoustic signal without the need of the bulky ultrasonic transducer. This design will reduce the structure complexity and also the cost. As demonstration, we made such chips and detected moving microspheres by analyzing the photoacoustic signal from the black tape fixed underneath the flow channel.

Citation Download Citation

Jianpeng Cai, Hui Fang, and Sheng Yan "Photoacoustic microfluidics based on all-optical detection", Proc. SPIE 12282, 2021 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 122821B (8 July 2022); https://doi.org/10.1117/12.2616464

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