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Saiseau R, Truong H, Guérin T, Delabre U, Delville JP. Decay Dynamics of a Single Spherical Domain in Near-Critical Phase-Separated Conditions. PHYSICAL REVIEW LETTERS 2024; 133:018201. [PMID: 39042806 DOI: 10.1103/physrevlett.133.018201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/03/2024] [Indexed: 07/25/2024]
Abstract
Domain decay is at the heart of the so-called evaporation-condensation Ostwald-ripening regime of phase ordering kinetics, where the growth of large domains occurs at the expense of smaller ones, which are expected to "evaporate." We experimentally investigate such decay dynamics at the level of a single spherical domain picked from one phase in coexistence and brought into the other phase by an optomechanical approach, in a near-critical phase-separated binary liquid mixture. We observe that the decay dynamics is generally not compatible with the theoretically expected surface-tension decay laws for conserved order parameters. Using a mean-field description, we quantitatively explain this apparent disagreement by the gradient of solute concentrations induced by gravity close to a critical point. Finally, we determine the conditions for which buoyancy becomes negligible compared to capillarity and perform dedicated experiments that retrieve the predicted surface-tension induced decay exponent. The surface-tension driven decay dynamics of conserved order parameter systems in the presence and the absence of gravity, is thus established at the level of a single domain.
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Affiliation(s)
| | - Henri Truong
- University of Bordeaux, CNRS, LOMA, UMR 5798, F-33400, Talence, France
- University of Bordeaux, CNRS, CRPP, UMR 5031, F-33600, Pessac, France
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Kim Y, Yao K, Ponce C, Zheng Y. Optical Actuation of Nanoparticle-Loaded Liquid-Liquid Interfaces for Active Photonics. ACS NANO 2024; 18:15627-15637. [PMID: 38850254 PMCID: PMC11299852 DOI: 10.1021/acsnano.4c01227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2024]
Abstract
Liquid-liquid interfaces hold the potential to serve as versatile platforms for dynamic processes, due to their inherent fluidity and capacity to accommodate surface-active materials. This study explores laser-driven actuation of liquid-liquid interfaces with and without loading of gold nanoparticles and further exploits the laser-actuated interfaces with nanoparticles for tunable photonics. Upon laser exposure, gold nanoparticles were rearranged along the interface, enabling the reconfigurable, small-aperture modulation of light transmission and the tunable lensing effect. Adapting the principles of optical and optothermal tweezers, we interpreted the underlying mechanisms of actuation and modulation as a synergy of optomechanical and optothermal effects. Our findings provide an analytical framework for understanding microscopic interfacial behaviors, contributing to potential applications in tunable photonics and interfacial material engineering.
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Affiliation(s)
- Youngsun Kim
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Kan Yao
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Carolina Ponce
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yuebing Zheng
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
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Yu Z, Lv S, Zhang X, Liang H, Xie W, Yang Y. Dynamic surface stress field of the pure liquid-vapor interface subjected to the cyclic loads. J Chem Phys 2023; 158:2889008. [PMID: 37154282 DOI: 10.1063/5.0147044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 04/24/2023] [Indexed: 05/10/2023] Open
Abstract
We demonstrate a methodology for computationally investigating the mechanical response of a pure molten lead surface system to the lateral mechanical cyclic loads and try to answer the following question: how does the dynamically driven liquid surface system follow the classical physics of the elastic-driven oscillation? The steady-state oscillation of the dynamic surface tension (or excess stress) under cyclic load, including the excitation of high-frequency vibration mode at different driving frequencies and amplitudes, was compared with the classical theory of a single-body driven damped oscillator. Under the highest studied frequency (50 GHz) and amplitude (5%) of the load, the increase of in (mean value) dynamic surface tension could reach ∼5%. The peak and trough values of the instantaneous dynamic surface tension could reach (up to) 40% increase and (up to) 20% decrease compared to the equilibrium surface tension, respectively. The extracted generalized natural frequencies seem to be intimately related to the intrinsic timescales of the atomic temporal-spatial correlation functions of the liquids both in the bulk region and in the outermost surface layers. These insights uncovered could be helpful for quantitative manipulation of the liquid surface using ultrafast shockwaves or laser pulses.
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Affiliation(s)
- Zhiyong Yu
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Songtai Lv
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Xin Zhang
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
| | - Hongtao Liang
- Research and Development Department, Zhangjiang Laboratory, Shanghai 201204, China
| | - Wei Xie
- Materials Genome Institute, Shanghai University, Shanghai 200444, China
| | - Yang Yang
- State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
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Saiseau R, Pedersen C, Benjana A, Carlson A, Delabre U, Salez T, Delville JP. Near-critical spreading of droplets. Nat Commun 2022; 13:7442. [PMID: 36460633 PMCID: PMC9718839 DOI: 10.1038/s41467-022-35047-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/14/2022] [Indexed: 12/04/2022] Open
Abstract
We study the spreading of droplets in a near-critical phase-separated liquid mixture, using a combination of experiments, lubrication theory and finite-element numerical simulations. The classical Tanner's law describing the spreading of viscous droplets is robustly verified when the critical temperature is neared. Furthermore, the microscopic cut-off length scale emerging in this law is obtained as a single free parameter for each given temperature. In total-wetting conditions, this length is interpreted as the thickness of the thin precursor film present ahead of the apparent contact line. The collapse of the different evolutions onto a single Tanner-like master curve demonstrates the universality of viscous spreading before entering in the fluctuation-dominated regime. Finally, our results reveal a counter-intuitive and sharp thinning of the precursor film when approaching the critical temperature, which is attributed to the vanishing spreading parameter at the critical point.
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Affiliation(s)
- Raphael Saiseau
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, Talence, F-33400 France ,grid.508487.60000 0004 7885 7602Laboratoire Matière et Systèmes Complexes, UMR 7057, CNRS, Université Paris Cité, Paris, F-75006 France
| | - Christian Pedersen
- grid.5510.10000 0004 1936 8921Mechanics Division, Department of Mathematics, University of Oslo, Oslo, 0316 Norway
| | - Anwar Benjana
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, Talence, F-33400 France
| | - Andreas Carlson
- grid.5510.10000 0004 1936 8921Mechanics Division, Department of Mathematics, University of Oslo, Oslo, 0316 Norway
| | - Ulysse Delabre
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, Talence, F-33400 France
| | - Thomas Salez
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, Talence, F-33400 France
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Chesneau H, Chraïbi H, Bertin N, Petit J, Delville JP, Brasselet E, Wunenburger R. Numerical simulation of universal morphogenesis of fluid interface deformations driven by radiation pressure. Phys Rev E 2022; 106:065104. [PMID: 36671126 DOI: 10.1103/physreve.106.065104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 11/29/2022] [Indexed: 12/28/2022]
Abstract
We report on numerical simulation of fluid interface deformations induced by either acoustic or optical radiation pressure. This is done by solving simultaneously the scalar wave propagation equation and the two-phase flow equations using the boundary element method. Using dimensional analysis, we show that interface deformation morphogenesis is universal, i.e., depends on the same dimensionless parameters in acoustics and electromagnetics. We numerically investigate a few selected phenomena-in particular the shape of large deformations and the slenderness transition and its hysteresis-and compare with existing and novel experimental observations. Qualitative agreement between the numerical simulations and experiments is found when the mutual interaction between wave propagation and wave-induced deformations is taken into account. Our results demonstrate the leading role of the radiation pressure in morphogenesis of fluid interface deformations and the importance of the propagation-deformation interplay.
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Affiliation(s)
- Hugo Chesneau
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France
| | - Hamza Chraïbi
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France
| | - Nicolas Bertin
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France
| | - Julien Petit
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France
| | | | | | - Régis Wunenburger
- Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France.,Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
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Nanoparticle-Mediated Cavitation via CO 2 Laser Impacting on Water: Concentration Effect, Temperature Visualization, and Core-Shell Structures. Sci Rep 2019; 9:18326. [PMID: 31797951 PMCID: PMC6892820 DOI: 10.1038/s41598-019-54531-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/15/2019] [Indexed: 11/08/2022] Open
Abstract
By taking advantage of seeded polymer nanoparticles and strong photo energy absorption, we report CO2 laser impacting on water to produce cavitation at the air/water interface. Using a high-speed camera, three regimes (no cavitation, cavitation, and pseudo-cavitation) are identified within a broad range of nanoparticles concentration and size. The underlying correlation among cavitation, nanoparticles and temperature is revealed by the direct observation of spatiotemporal evolution of temperature using a thermal cameral. These findings indicate that nanoparticles not only act as preexisted nuclei to promote nucleation for cavitation, but also likely affect temperature to change the nucleation rate as well. Moreover, by exploiting a compound hexane/water interface, a novel core-shell cavitation is demonstrated. This approach might be utilized to attain and control cavitations by choosing nanoparticles and designing interfaces while operating at a lower laser intensity, for versatile technological applications in material science and medical surgery.
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