Speaker
Prof.
Rolf Pelster
(Universität des Saarlandes, FR Physik)
Description
Simulations predict that elastic moduli of nanoconfined adsorbates depend significantly on the pore size [1]. However, until now this has not yet been confirmed experimentally. Using ultrasonic measurements, we study in this presentation the longitudinal modulus $\beta_{Ar,ads}$ of liquid argon in porous glass samples with different pore radii between 1.8 and 12.8 nm. Our analysis of the measured moduli of empty and filled samples shows that the modulus of the confined liquid argon increases linearly with the inverse pore radius, $1/r_P$. Thus, our measurements supply the first experimental indication of the theoretically predicted pore size dependence.
| References | [1] Dobrzanski, C. D.; Gurevich, B.; Gor, G. Y., Elastic properties of confined fluids: From molecular modeling to ultrasonic experiments on porous solids, Appl. Phys. Rev. 8, 021317 (2021) |
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| Country | Germany |
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Authors
Dr
Klaus Schappert
(Universität des Saarlandes, FR Physik)
Prof.
Rolf Pelster
(Universität des Saarlandes, FR Physik)
