A flow rate control-based method to improve aerosol capture efficiency in Raman optical tweezers

Shuai Li; Haiqing Liu; Huizhu Hu

doi:10.1117/12.2662559

12 April 2023 A flow rate control-based method to improve aerosol capture efficiency in Raman optical tweezers

Shuai Li, Haiqing Liu, Huizhu Hu

Proceedings Volume 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022); 1256523 (2023) https://doi.org/10.1117/12.2662559
Event: Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 2022, Shanghai, China

Abstract

Raman optical tweezers have a wide range of applications in aerosol property measurements, such as moisture absorption and volatility properties. When capturing aerosols with optical tweezers, it has the advantage of non-contact and non-damage to aerosols. However, there is a problem of low capture efficiency of aerosols when aerosol property measurements are performed with Raman optical tweezers, which affects the efficiency of aerosol property measurement experiments. Here, we propose a flow rate control-based method to improve the aerosol capture efficiency. Firstly, we clarify that the most suitable atomization angle is 30 degrees by simulating the flow rate distribution of aerosol in the chamber under different atomization angle conditions. Then, we conduct aerosol capture efficiency validation experiments. Finally, we carry out an aerosol property measurement experiment based on the proposed aerosol capture method. The proposed aerosol flow rate control-based method can improve the capture efficiency not only of aerosols but also of micro- and nanoparticles in vacuum optical tweezer systems.

Citation Download Citation

Shuai Li, Haiqing Liu, and Huizhu Hu "A flow rate control-based method to improve aerosol capture efficiency in Raman optical tweezers", Proc. SPIE 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 1256523 (12 April 2023); https://doi.org/10.1117/12.2662559

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available