Atmospheric clusters to nanoparticles: Recent progress and challenges in closing the gap in chemical composition. Smith, J., N., Draper, D., C., Chee, S., Dam, M., Glicker, H., Myers, D., Thomas, A., E., Lawler, M., J., & Myllys, N. Journal of Aerosol Science, 153:105733, 2021. ![Atmospheric clusters to nanoparticles: Recent progress and challenges in closing the gap in chemical composition [link]](https://bibbase.org/img/filetypes/link.svg "link")
Website doi abstract bibtex Aerosol nanoclusters (AN), defined here as molecular aggregates suspended in a gas with dimensions between 2 and 10 nm, are the link between substances that we think of as molecules, or the “gas phase,” and those that we consider as particles, or the “condensed phase.” The ability to measure and model the physical and chemical properties of size-resolved AN, which at present is rudimentary at best, is crucial for understanding how particles form and evolve in a number of environments that are natural or influenced by human activities. This review describes the current state-of-the-art for measuring and modeling the size-resolved composition of atmospheric AN. We focus specifically on instruments, many relying on mass spectrometry, that show promise for closing the measurement gap under atmospherically relevant conditions by increasing the size of measurable gas-phase clusters (bottom-up approaches) and by decreasing the size of measurable nanoparticles (top-down approaches). Theoretical methods for predicting AN composition have similarly relied on bottom-up approaches that extend the accuracy of quantum chemistry calculations to larger molecular systems, as well as top-down approaches that correct bulk composition aerosol models for size-dependent properties such as viscosity and volatility. Current measurement and modeling challenges that must be overcome in order to close the gap are discussed.
@article{
title = {Atmospheric clusters to nanoparticles: Recent progress and challenges in closing the gap in chemical composition},
type = {article},
year = {2021},
keywords = {Aerosol nanocluster,Nanoparticle composition,New particle formation,Nucleation},
pages = {105733},
volume = {153},
websites = {http://www.sciencedirect.com/science/article/pii/S0021850220302184},
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abstract = {Aerosol nanoclusters (AN), defined here as molecular aggregates suspended in a gas with dimensions between 2 and 10 nm, are the link between substances that we think of as molecules, or the “gas phase,” and those that we consider as particles, or the “condensed phase.” The ability to measure and model the physical and chemical properties of size-resolved AN, which at present is rudimentary at best, is crucial for understanding how particles form and evolve in a number of environments that are natural or influenced by human activities. This review describes the current state-of-the-art for measuring and modeling the size-resolved composition of atmospheric AN. We focus specifically on instruments, many relying on mass spectrometry, that show promise for closing the measurement gap under atmospherically relevant conditions by increasing the size of measurable gas-phase clusters (bottom-up approaches) and by decreasing the size of measurable nanoparticles (top-down approaches). Theoretical methods for predicting AN composition have similarly relied on bottom-up approaches that extend the accuracy of quantum chemistry calculations to larger molecular systems, as well as top-down approaches that correct bulk composition aerosol models for size-dependent properties such as viscosity and volatility. Current measurement and modeling challenges that must be overcome in order to close the gap are discussed.},
bibtype = {article},
author = {Smith, James N. and Draper, Danielle C. and Chee, Sabrina and Dam, Michelia and Glicker, Hayley and Myers, Deanna and Thomas, Adam E. and Lawler, Michael J. and Myllys, Nanna},
doi = {10.1016/j.jaerosci.2020.105733},
journal = {Journal of Aerosol Science}
}
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