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  Extreme thermodynamics in nanolitre volumes through stimulated Brillouin–Mandelstam scattering

Geilen, A., Popp, A., Das, D., Junaid, S., Poulton, C. G., Chemnitz, M., et al. (2023). Extreme thermodynamics in nanolitre volumes through stimulated Brillouin–Mandelstam scattering. Nature Physics, 19, 1805-1812. doi:10.1038/s41567-023-02205-1.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-061D-C Version Permalink: https://hdl.handle.net/21.11116/0000-000E-061E-B
Genre: Journal Article

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Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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Geilen, Andreas1, 2, 3, Author           
Popp, Alexandra4, Author           
Das, Debavan5, Author
Junaid, Saher5, Author
Poulton, Christopher G.5, Author
Chemnitz, Mario5, Author
Marquardt, Christoph2, 4, Author           
Schmidt, Markus A.5, Author
Stiller, Birgit3, Author           
Affiliations:
1International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364697              
2Friedrich-Alexander-Universität Erlangen-Nürnberg, ou_persistent22              
3Stiller Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_3164412              
4Christoph Marquardt Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society, ou_3164413              
5external, ou_persistent22              

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 Abstract: Examining the physical properties of materials—particularly of toxic liquids—under a wide range of thermodynamic states is a challenging problem due to the extreme conditions the material has to experience. Such temperature and pressure regimes, which result in a change in the refractive index and sound velocity, can be accessed by optoacoustic interactions such as Brillouin–Mandelstam scattering. Here we demonstrate the Brillouin–Mandelstam measurements of nanolitre volumes of liquids in extreme thermodynamic regimes. This is enabled by a fully sealed liquid-core optical fibre containing carbon disulfide. Within this waveguide, which exhibits tight optoacoustic confinement and a high Brillouin gain, we are able to conduct spatially resolved measurements of the local Brillouin response, giving us access to a resolved image of the temperature and pressure values along the liquid channel. We measure the material properties of the liquid core at very large positive pressures (above 1,000 bar) and substantial negative pressures (below –300 bar), as well as explore the isobaric and isochoric regimes. The extensive thermodynamic control allows the tunability of the Brillouin frequency shift of more than 40% using only minute volumes of liquid.

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Language(s): eng - English
 Dates: 2023-09-25
 Publication Status: Published online
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 Identifiers: DOI: 10.1038/s41567-023-02205-1
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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: 19 Sequence Number: - Start / End Page: 1805 - 1812 Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850