Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N00: Poster Session II (11am-2pm PST)
11:00 AM,
Wednesday, March 8, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: N00.00129 : Measuring spontaneous charging of single aerosol particles*
Presenter:
Andrea Stoellner
(Institute of Science and Technology Aust)
Authors:
Andrea Stoellner
(Institute of Science and Technology Aust)
Isaac Lenton
(Institute of Science and Technology Austria)
Scott Waitukaitis
(Institute of Science and Technology Austria)
By levitating individual aerosol particles in an optical trap [3, 4] we study this proposed charging mechanism. Our setup allows for trapping of various types of solid and liquid particles in the micrometer size range. The particle’s charge is measured by applying a sinusoidal electric field and observing the resulting particle motion. The Mie scattering pattern of the particle furthermore gives information about the particle’s size and refractive index, both at equilibrium and during evaporation and condensation.
Ultimately we aim to gain detailed insights into the proposed evaporation-condensation-charging mechanism and its implications for the triboelectric effect and atmospheric electricity.
- [1] Shavlov A. et al. (2018) J Aerosol Sci. 123 17-26.
[2] Moreira K. S., et al. (2020) Adv. Mater. Interfaces 7(18) 202000884.
[3] Reich O., et al. (2020) Commun. Phys. 3(1).
[4] Ricci F., et al. (2022) ACS Nano 6 (16) 8677–8683.
*This project has received funding from the European Research Council (ERC) under the European Union's Starting Grant (No. 949120).
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