Extreme thermodynamics in nanolitre volumes through stimulated Brillouin-Mandelstam scattering

Geilen, A; Popp, A; Das, D; Junaid, S; Poulton, CG; Chemnitz, M; Marquardt, C; Schmidt, MA; Stiller, B

Extreme thermodynamics in nanolitre volumes through stimulated Brillouin-Mandelstam scattering

Geilen, A Popp, A Das, D Junaid, S Poulton, CG Chemnitz, M Marquardt, C Schmidt, MA Stiller, B

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Publisher:: NATURE PORTFOLIO
Publication Type:: Journal Article
Citation:: NATURE PHYSICS

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Field	Value	Language
dc.contributor.author	Geilen, A
dc.contributor.author	Popp, A
dc.contributor.author	Das, D
dc.contributor.author	Junaid, S
dc.contributor.author	Poulton, CG
dc.contributor.author	Chemnitz, M
dc.contributor.author	Marquardt, C
dc.contributor.author	Schmidt, MA
dc.contributor.author	Stiller, B
dc.date.accessioned	2023-12-07T22:26:22Z
dc.date.available	2023-12-07T22:26:22Z
dc.identifier.citation	NATURE PHYSICS
dc.identifier.issn	1745-2473
dc.identifier.issn	1745-2481
dc.identifier.uri	http://hdl.handle.net/10453/173770
dc.description.abstract	<jats:title>Abstract</jats:title><jats:p>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.</jats:p>
dc.language	English
dc.publisher	NATURE PORTFOLIO
dc.relation	http://purl.org/au-research/grants/arc/DP200101893
dc.relation.ispartof	NATURE PHYSICS
dc.relation.isbasedon	10.1038/s41567-023-02205-1
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.subject	01 Mathematical Sciences, 02 Physical Sciences
dc.subject.classification	Fluids & Plasmas
dc.subject.classification	49 Mathematical sciences
dc.subject.classification	51 Physical sciences
dc.title	Extreme thermodynamics in nanolitre volumes through stimulated Brillouin-Mandelstam scattering
dc.type	Journal Article
utslib.for	01 Mathematical Sciences
utslib.for	02 Physical Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access	*
dc.date.updated	2023-12-07T22:26:19Z
pubs.publication-status	Published online

Abstract:

AbstractExamining 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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http://hdl.handle.net/10453/173770