Plasma-induced surface cooling. Tomko, J. A., Johnson, M. J., Boris, D. R., Petrova, T. B., Walton, S. G., & Hopkins, P. E. Nature Communications, May, 2022. doi abstract bibtex Plasmas are an indispensable materials engineering tool due to their unique ability to deliver a flux of species and energy to a surface. This energy flux serves to heat the surface out of thermal equilibrium with bulk material, thus enabling local physicochemical processes that can be harnessed for material manipulation. However, to-date, there have been no reports on the direct measurement of the localized, transient thermal response of a material surface exposed to a plasma. Here, we use time-resolved optical thermometry in-situ to show that the energy flux from a pulsed plasma serves to both heat and transiently cool the material surface. To identify potential mechanisms for this ‘plasma cooling,’ we employ time-resolved plasma diagnostics to correlate the photon and charged particle flux with the thermal response of the material. The results indicate photon-stimulated desorption of adsorbates from the surface is the most likely mechanism responsible for this plasma cooling.
@article{tomko2022,
title = {Plasma-induced surface cooling},
volume = {13},
copyright = {2022 The Author(s)},
issn = {2041-1723},
doi = {10.1038/s41467-022-30170-5},
abstract = {Plasmas are an indispensable materials engineering tool due to their unique ability to deliver a flux of species and energy to a surface. This energy flux serves to heat the surface out of thermal equilibrium with bulk material, thus enabling local physicochemical processes that can be harnessed for material manipulation. However, to-date, there have been no reports on the direct measurement of the localized, transient thermal response of a material surface exposed to a plasma. Here, we use time-resolved optical thermometry in-situ to show that the energy flux from a pulsed plasma serves to both heat and transiently cool the material surface. To identify potential mechanisms for this ‘plasma cooling,’ we employ time-resolved plasma diagnostics to correlate the photon and charged particle flux with the thermal response of the material. The results indicate photon-stimulated desorption of adsorbates from the surface is the most likely mechanism responsible for this plasma cooling.},
language = {en},
number = {1},
urldate = {2024-04-10},
journal = {Nature Communications},
author = {Tomko, John A. and Johnson, Michael J. and Boris, David R. and Petrova, Tzvetelina B. and Walton, Scott G. and Hopkins, Patrick E.},
month = may,
year = {2022},
keywords = {Applied physics, Characterization and analytical techniques, Materials for energy and catalysis, Plasma physics},
}
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