Interpretation of Electrostatic Self-Potential Measurements Using Interface-Trapped Microspheres with Surface Heterogeneity
- Authors
- Choi, Kyu Hwan; Kang, Dong Woo; Yoo, Sunghoon; Lee, Seunghyun; Park, Bum Jun
- Issue Date
- Mar-2020
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Heterogeneity; Self-potential; Surface charge patchiness; Fluid interface; Optical tweezers
- Citation
- ACS APPLIED POLYMER MATERIALS, v.2, no.3, pp.1304 - 1311
- Journal Title
- ACS APPLIED POLYMER MATERIALS
- Volume
- 2
- Number
- 3
- Start Page
- 1304
- End Page
- 1311
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/41942
- DOI
- 10.1021/acsapm.9b01189
- ISSN
- 2637-6105
- Abstract
- Electrostatic self-potentials of individual particles trapped at an oil-water interface were determined, and the effects of surface chemical nonuniformity on heterogeneous self-potentials and equilibrium microstructures were investigated. Direct measurement of the pair interactions and the self-potentials of polystyrene microspheres were performed using optical laser tweezers. The individual particles had different self-potentials even when they possessed the same surface functionalities. Atomic force microscopy measurements elucidated the relationship between nonuniform surface charge distribution and heterogeneity and magnitude of self-potentials. Monte Carlo simulations demonstrated that self-potential heterogeneity led to the formation of more melted microstructures that showed excellent consistency with experiments.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/41942)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.