期刊
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 72
卷 72, 期 -, 页码 235-252出版社
ANNUAL REVIEWS
DOI: 10.1146/annurev-physchem-090419-110133
关键词
single particle; hygroscopicity; phase state; surface tension; atomic force microscopy; aerosols
资金
- National Science Foundation (NSF) through the NSF Center for Aerosol Impacts on Chemistry of the Environment (CAICE) [CHE-1801971]
Atmospheric aerosols are suspended particulate matter with varying composition, size, and mixing state. Understanding their impact on climate, atmosphere, and human health poses challenges, necessitating experimental methods to measure their dynamic properties. The recent emergence of atomic force microscopy as an experimental tool in physical, analytical, and atmospheric chemistry enables such measurements to be conducted on individual aerosol particles.
Atmospheric aerosols are suspended particulate matter of varying composition, size, and mixing state. Challenges remain in understanding the impact of aerosols on the climate, atmosphere, and human health. The effect of aerosols depends on their physicochemical properties, such as their hygroscopicity, phase state, and surface tension. These properties are dynamic with respect to the highly variable relative humidity and temperature of the atmosphere. Thus, experimental approaches that permit the measurement of these dynamic properties are required. Such measurements also need to be performed on individual, submicrometer-, and supermicrometer-sized aerosol particles, as individual atmospheric particles from the same source can exhibit great variability in their form and function. In this context, this review focuses on the recent emergence of atomic force microscopy as an experimental tool in physical, analytical, and atmospheric chemistry that enables such measurements. Remaining challenges are noted and suggestions for future studies are offered.
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