Relevant bibliographies by topics / Marangoni propulsion

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Marangoni propulsion'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Marangoni propulsion"

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Lauga, Eric, and Anthony M. J. Davis. "Viscous Marangoni propulsion." Journal of Fluid Mechanics 705 (December 19, 2011): 120–33. http://dx.doi.org/10.1017/jfm.2011.484.

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AbstractMarangoni propulsion is a form of locomotion wherein an asymmetric release of surfactant by a body located at the surface of a liquid leads to its directed motion. We present in this paper a mathematical model for Marangoni propulsion in the viscous regime. We consider the case of a thin rigid circular disk placed at the surface of a viscous fluid and whose perimeter has a prescribed concentration of an insoluble surfactant, to which the rest of its surface is impenetrable. Assuming a linearized equation of state between surface tension and surfactant concentration, we derive analytically the surfactant, velocity and pressure fields in the asymptotic limit of low capillary, Péclet and Reynolds numbers. We then exploit these results to calculate the Marangoni propulsion speed of the disk. Neglecting the stress contribution from Marangoni flows is seen to over-predict the propulsion speed by 50 %.
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Vandadi, Vahid, Saeed Jafari Kang, and Hassan Masoud. "Reverse Marangoni surfing." Journal of Fluid Mechanics 811 (December 15, 2016): 612–21. http://dx.doi.org/10.1017/jfm.2016.695.

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We theoretically study the surfing motion of chemically and thermally active particles located at a flat liquid–gas interface that sits above a liquid layer of finite depth. The particles’ activity creates and maintains a surface tension gradient resulting in the auto-surfing. It is intuitively perceived that Marangoni surfers propel towards the direction with a higher surface tension. Remarkably, we find that the surfers may propel in the lower surface tension direction depending on their geometry and proximity to the bottom of the liquid layer. In particular, our analytical calculations for Stokes flow and diffusion-dominated scalar fields (i.e. chemical concentration and temperature fields) indicate that spherical particles undergo reverse Marangoni propulsion under confinement whereas disk-shaped surfers always move in the expected direction. We extend our results by proposing an approximate formula for the propulsion speed of oblate spheroidal particles based on the speeds of spheres and disks.
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Morozov, Matvey, and Sébastien Michelin. "Self-propulsion near the onset of Marangoni instability of deformable active droplets." Journal of Fluid Mechanics 860 (December 11, 2018): 711–38. http://dx.doi.org/10.1017/jfm.2018.853.

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Experimental observations indicate that chemically active droplets suspended in a surfactant-laden fluid can self-propel spontaneously. The onset of this motion is attributed to a symmetry-breaking Marangoni instability resulting from the nonlinear advective coupling of the distribution of surfactant to the hydrodynamic flow generated by Marangoni stresses at the droplet’s surface. Here, we use a weakly nonlinear analysis to characterize the self-propulsion near the instability threshold and the influence of the droplet’s deformability. We report that, in the vicinity of the threshold, deformability enhances self-propulsion of viscous droplets, but hinders propulsion of drops that are roughly less viscous than the surrounding fluid. Our asymptotics further reveals that droplet deformability may alter the type of bifurcation leading to symmetry breaking: for moderately deformable droplets, the onset of self-propulsion is transcritical and a regime of steady self-propulsion is stable; while in the case of highly deformable drops, no steady flows can be found within the asymptotic limit considered in this paper, suggesting that the bifurcation is subcritical.
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Chen, Shuai, Zhi Zhang, Yu Zhang, and Yong Sha. "A three-dimensional multiphase numerical model for the influence of Marangoni convection on Marangoni self-driven object." Physics of Fluids 34, no. 4 (2022): 043308. http://dx.doi.org/10.1063/5.0082893.

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By means of coordinate transformation and the volume-of-fluid-level set multiphase flow method, a three-dimensional multiphase numerical model is established to simulate a Marangoni self-driven object. The forces on the Marangoni self-driven object are discussed as the driving force, viscous resistance, and pressure resistance. A typical disk-shaped, Marangoni self-driven object driven by the diffusion of camphor from its tail to water is utilized to perform a numerical study. Its motion evolution and force change in the whole process are represented quantitatively alongside the flow field and camphor concentration distribution in the flow domain. Meanwhile, the influence of Marangoni convection, which is induced by camphor diffusion at the moving gas–liquid interface, on surfer motion is surveyed. The results presented in this work can improve understanding of self-driven Marangoni propulsion since self-driven object motion and fluid movement details are difficult to acquire experimentally.
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Jin, Hua, Abraham Marmur, Olli Ikkala, and Robin H. A. Ras. "Vapour-driven Marangoni propulsion: continuous, prolonged and tunable motion." Chemical Science 3, no. 8 (2012): 2526. http://dx.doi.org/10.1039/c2sc20355c.

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Würger, Alois. "Thermally driven Marangoni surfers." Journal of Fluid Mechanics 752 (July 9, 2014): 589–601. http://dx.doi.org/10.1017/jfm.2014.349.

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AbstractWe study autopropulsion of an interface particle that is driven by the Marangoni stress arising from a self-generated asymmetric temperature or concentration field. We calculate separately the long-range Marangoni flow $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}{\boldsymbol {v}}^{I}$ due to the stress discontinuity at the interface and the short-range velocity field ${\boldsymbol {v}}^{P}$ imposed by the no-slip condition on the particle surface. Both contributions are evaluated for a spherical floater with temperature monopole and dipole moments. We find that the self-propulsion velocity is given by the amplitude of the ‘source doublet’ that belongs to the short-range contribution ${\boldsymbol {v}}^{P}$. Hydrodynamic interactions, on the other hand, are determined by the long-range Marangoni flow ${\boldsymbol {v}}^{I}$. Its dipolar part results in an asymmetric advection pattern of neighbouring particles, which in turn may perturb the known hexatic lattice or even favour disordered states.
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Cheng, Mengjiao, Dequn Zhang, Shu Zhang, Zuankai Wang, and Feng Shi. "Tackling the Short-Lived Marangoni Motion Using a Supramolecular Strategy." CCS Chemistry 1, no. 2 (2019): 148–55. http://dx.doi.org/10.31635/ccschem.019.20180009.

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Inspired by the intriguing capability of beetles to quickly slide on water, scientists have long translated this surface-tension-gradient–dominated Marangoni motion into various applications, for example, self-propulsion. However, this classical spontaneous motion is limited by a short lifetime due to the loss of the surface tension gradient. Indeed, the propellant of amphiphilic surfactants can rapidly reach an adsorption equilibrium and an excessive aggregation state at the air/liquid interface. Here, we demonstrate a supramolecular host–guest chemistry strategy that allows the breaking of the physical limit of the adsorption equilibrium and the simultaneous removal of surfactant molecules from the interface. By balancing the competitive kinetics between the two processes, we have prolonged the lifetime of the motion 40-fold. Our work presents an important advance in the query of long-lived self-propulsion transport through flexible interference at the molecular level and holds promise in electricity generation applications .
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Hwang, Hyesun, Periklis Papadopoulos, Syuji Fujii, and Sanghyuk Wooh. "Driving Droplets on Liquid Repellent Surfaces via Light‐Driven Marangoni Propulsion." Advanced Functional Materials 32, no. 15 (2022): 2111311. http://dx.doi.org/10.1002/adfm.202111311.

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Santiago, Ibon, and Friedrich C. Simmel. "Self-Propulsion Strategies for Artificial Cell-Like Compartments." Nanomaterials 9, no. 12 (2019): 1680. http://dx.doi.org/10.3390/nano9121680.

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Reconstitution of life-like properties in artificial cells is a current research frontier in synthetic biology. Mimicking metabolism, growth, and sensing are active areas of investigation; however, achieving motility and directional taxis are also challenging in the context of artificial cells. To tackle this problem, recent progress has been made that leverages the tools of active matter physics in synthetic biology. This review surveys the most significant achievements in designing motile cell-like compartments. In this context, strategies for self-propulsion are summarized, including, compartmentalization of catalytically active particles, phoretic propulsion of vesicles and emulsion droplet motion driven by Marangoni flows. This work showcases how the realization of motile protocells may impact biomedical engineering while also aiming at answering fundamental questions in locomotion of prebiotic cells.
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Watanabe, Satoshi, Kazuki Arikawa, Makoto Uda, Syuji Fujii, and Masashi Kunitake. "Multimotion of Marangoni Propulsion Ships Controlled by Two-Wavelength Near-Infrared Light." Langmuir 37, no. 50 (2021): 14597–604. http://dx.doi.org/10.1021/acs.langmuir.1c02222.

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Dissertations / Theses on the topic "Marangoni propulsion"

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Piroird, Keyvan. "Dynamiques spéciales de gouttes non-mouillantes." Phd thesis, Ecole Polytechnique X, 2011. http://pastel.archives-ouvertes.fr/pastel-00644333.

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Dans cette thèse, nous étudions à l'aide de plusieurs expériences la dynamique de gouttes non-mouillantes dans des situations où la gravité n'intervient pas, mais où d'autres forces, moins communes, sont à l'oeuvre. La première partie porte sur l'étude de gouttes d'oxygène liquide qui, en plus d'être en caléfaction sur un support à température ambiante, ont la particularité d'être susceptibles à la présence d'un champ magnétique. Nous étudions la force magnétique exercée sur ces gouttes ultra-mobiles et nous montrons qu'elles peuvent être déviées, ralenties, déformées, capturées et même parfois accélérées à l'aide d'un aimant. Dans la deuxième partie de ce travail, nous avons étudié une situation inverse, où nous avons cherché à mettre en mouvement une goutte non-mouillante initialement au repos. La goutte est cette fois faite d'huile se trouvant dans un tube capillaire rempli d'eau, et nous avons montré qu'un gradient de concentration en tensioactif provoque un mouvement spontané et permet à la goutte d'huile de s'échapper du tube. Cette expérience réalise ainsi une situation modèle de détergence. Une dynamique très particulière est mise en évidence à temps long : le mouvement est continu ou intermittent selon les paramètres de l'expérience.
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(8816204), Nathaniel H. Brown. "Self-propulsion of Contaminated Microbubbles." Thesis, 2020.

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In many natural and industrial processes, bubbles are exposed to surface-active contaminants (surfactants) that may cover the whole or part of the bubble interface. A partial coverage of the bubble interface results in a spontaneous self-propulsion mechanism, which is yet poorly understood.
The main goal of this study is to enhance the understanding of the flow and interfacial mechanisms underlying the self-propulsion of small surfactant contaminated bubbles. The focus is on characterizing the self-propulsion regimes generated by the presence of surface-active species, and the influence of surfactant activity and surface coverage on the active bubble motion.
The study was developed by simultaneously solving the full system of partial differential equations governing the free-surface flow physics and the surfactant transport on the deforming bubble interface using multi-scale numerical simulation.
Results show in microscopic detail how surface tension gradients (Marangoni stresses) induced by the uneven interfacial coverage produce spontaneous hydrodynamics flows (Marangoni flows) on the surrounding liquid, leading to bubble motion. Results also establish the influence of both surfactant activity and interfacial coverage on total displacement and average bubble velocity at the macroscale.
Findings from this research improve the fundamental understanding of the free-surface dynamics of self-propulsion and the associated transport of surface-active species, which are critical to important natural and technological processes, ranging from the Marangoni propulsion of microorganisms to the active motion of bubbles and droplets in microfluidic devices. Overall, the findings advance our understanding of active matter behavior; that is, the behavior of material systems with members able to transduce surface energy and mass transport into active movement.
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Conference papers on the topic "Marangoni propulsion"

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Visvanathan, Karthik, Farah Shariff, Seow Yuen Yee, and Amar S. Basu. "Propulsion and steering of a floating mini-robot based on Marangoni flow actuation." In TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2009. http://dx.doi.org/10.1109/sensor.2009.5285867.

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Kwak, Bokeon, Dongyoung Lee, and Joonbum Bae. "Flexural Joints for Improved Linear Motion of a Marangoni Propulsion Robot: Design and Experiment." In 2018 7th IEEE International Conference on Biomedical Robotics and Biomechatronics (Biorob). IEEE, 2018. http://dx.doi.org/10.1109/biorob.2018.8488118.

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Kwak, Bokeon, and Joonbum Bae. "Skimming and steering of a non-tethered miniature robot on the water surface using marangoni propulsion." In 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2017. http://dx.doi.org/10.1109/iros.2017.8206155.

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