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dc.contributor.author
Diveky, Matus E.
dc.contributor.author
Roy, Sandra
dc.contributor.author
Cremer, Johannes W.
dc.contributor.author
David, Grégory
dc.contributor.author
Signorell, Ruth
dc.date.accessioned
2019-03-01T17:36:23Z
dc.date.available
2018-12-14T11:09:28Z
dc.date.available
2018-12-17T12:05:34Z
dc.date.available
2019-03-01T17:36:23Z
dc.date.issued
2019
dc.identifier.issn
1463-9084
dc.identifier.issn
1463-9076
dc.identifier.other
10.1039/c8cp06980h
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/310885
dc.identifier.doi
10.3929/ethz-b-000310885
dc.description.abstract
Photoacoustic spectroscopy is widely used to measure the light absorption of aerosols. However, the impact of key factors such as the effect of relative humidity and mass exchange on photoacoustic measurements are still poorly understood. We assess such measurement biases and their physical origin by analysing the photoacoustic signal of single tetraethylene glycol (TEG) particles at varying relative humidities. Our results show a decrease in the photoacoustic signal at elevated relative humidities for small particles (0.8–1.5 μm), while for larger sizes (2.2–3.2 μm) the trend is reversed. We model the photoacoustic signal to interpret the observed behaviour in terms of mass and heat flux contribution. The single particle photoacoustic signal analysis presented in this paper additionally allows for the retrieval of the mass accommodation coefficient. Fitting our experimental data to the theoretical model reveals values of αM ≈ 0.02–0.005 for water on TEG in the temperature range 295–309 K.
en_US
dc.language.iso
en
en_US
dc.publisher
Royal Society of Chemistry
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Assessing relative humidity dependent photoacoustics to retrieve mass accommodation coefficients of single optically trapped aerosol particles
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2018-12-13
ethz.journal.title
Physical Chemistry Chemical Physics
ethz.journal.volume
21
en_US
ethz.journal.issue
9
en_US
ethz.journal.abbreviated
Phys. Chem. Chem. Phys.
ethz.pages.start
4721
en_US
ethz.pages.end
4731
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Fundamentals of Aerosol Photoacoustic Spectroscopy
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03961 - Signorell, Ruth / Signorell, Ruth
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02515 - Laboratorium für Physikalische Chemie / Laboratory of Physical Chemistry::03961 - Signorell, Ruth / Signorell, Ruth
en_US
ethz.grant.agreementno
177479
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
ethz.date.deposited
2018-12-14T11:09:30Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-03-01T17:37:05Z
ethz.rosetta.lastUpdated
2019-03-01T17:37:05Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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