Variabilities and uncertainties in characterising water transport kinetics in glassy and ultraviscous aerosol

Physical Chemistry Chemical Physics : PCCP
Andrew M J RickardsJonathan P Reid

Abstract

We present a comprehensive evaluation of the variabilities and uncertainties present in determining the kinetics of water transport in ultraviscous aerosol droplets, alongside new measurements of the water transport timescale in sucrose aerosol. Measurements are performed on individual droplets captured using aerosol optical tweezers and the change in particle size during water evaporation or condensation is inferred from shifts in the wavelength of the whispering gallery mode peaks at which spontaneous Raman scattering is enhanced. The characteristic relaxation timescale (τ) for condensation or evaporation of water from viscous droplets following a change in gas phase relative humidity can be described by the Kohlrausch-Williams-Watts function. To adequately characterise the water transport kinetics and determine τ, sufficient time must be allowed for the particle to progress towards the final state. However, instabilities in the environmental conditions can prevent an accurate characterisation of the kinetics over such long time frames. Comparison with established thermodynamic and diffusional water transport models suggests the determination of τ is insensitive to the choice of thermodynamic treatment. We report excellent ag...Continue Reading

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Citations

Oct 20, 2015·Physical Chemistry Chemical Physics : PCCP·Chen CaiYunhong Zhang
Oct 17, 2015·The Journal of Physical Chemistry. a·Hanyu FanFabien Goulay
Sep 30, 2016·The Journal of Physical Chemistry. a·Young Chul SongChen Cai
Feb 16, 2017·Physical Chemistry Chemical Physics : PCCP·Nicholas E Rothfuss, Markus D Petters
Sep 26, 2017·Physical Chemistry Chemical Physics : PCCP·Yun ZhangYun-Hong Zhang
May 29, 2018·Physical Chemistry Chemical Physics : PCCP·Frances H MarshallJonathan P Reid
Apr 27, 2019·Physical Chemistry Chemical Physics : PCCP·F K A GregsonJ P Reid
Jun 27, 2019·Physical Chemistry Chemical Physics : PCCP·Katherine A NadlerRobert E Continetti
Feb 1, 2016·Chemical Science·Frances H MarshallCari S Dutcher
Apr 17, 2021·The Journal of Physical Chemistry. a·Stephen IngramJonathan P Reid
Apr 27, 2021·The Journal of Physical Chemistry. a·Zhancong LiangChak K Chan
May 5, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Feng-Min WuYun-Hong Zhang
Jun 21, 2018·The Journal of Physical Chemistry Letters·Nicholas E RothfussJonathan P Reid
Dec 16, 2016·The Journal of Physical Chemistry. a·Ali Moridnejad, Thomas C Preston
Mar 23, 2019·The Journal of Physical Chemistry. a·Brandon J Wallace, Thomas C Preston
Oct 4, 2017·The Journal of Physical Chemistry. a·Ali MoridnejadUlrich K Krieger
Sep 28, 2017·The Journal of Physical Chemistry. a·Zhi-Ru JiYun-Hong Zhang
Dec 20, 2016·Environmental Science & Technology·Nicholas E Rothfuss, Markus D Petters

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