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Maximum possible cooling rate in ultrafast chip nanocalorimetry: Fundamental limitations due to thermal resistance at the membrane/gas interface

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dc.contributor.author Minakov A.A.
dc.contributor.author Schick C.
dc.date.accessioned 2022-02-09T20:43:40Z
dc.date.available 2022-02-09T20:43:40Z
dc.date.issued 2021
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/169855
dc.description.abstract Ultrafast chip nanocalorimetry opens up remarkable possibilities in materials science by allowing samples to be cooled and heated at extremely high rates. Due to heat transfer limitations, controlled ultrafast cooling and heating can only be achieved for tiny samples in calorimeters with a micron-thick membrane. Even if ultrafast heating can be controlled under quasi-adiabatic conditions, ultrafast controlled cooling can be performed if the calorimetric cell is located in a heat-conducting gas. It was found that the maximum possible cooling rate increases as 1/r0 with decreasing radius r0 of the hot zone of the membrane. The possibility of increasing the maximum cooling rate with decreasing r0 was successfully implemented in many experiments. In this regard, it is interesting to answer the question: what is the maximum possible cooling rate in such experiments if r0 tends to zero? Indeed, on submicron scales, the mean free path of gas molecules lm f p becomes comparable to r0, and the temperature jump that exists at the membrane/gas interface becomes significant. Considering the limitation associated with thermal resistance at the membrane/gas interface and considering the transfer of heat through the membrane, we show that the controlled cooling rate can reach billions of K/s, up to 1010 K/s.
dc.subject Chip-nanocalorimetry
dc.subject Interfacial thermal resistance
dc.subject Ultrafast nanocalorimetry
dc.title Maximum possible cooling rate in ultrafast chip nanocalorimetry: Fundamental limitations due to thermal resistance at the membrane/gas interface
dc.type Article
dc.relation.ispartofseries-issue 17
dc.relation.ispartofseries-volume 11
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2021-11-17-SID85114453492


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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