Marangoni convection-driven laser fountains on free surfaces of liquids

Lin, Feng; Quraishy, Aamir Nasir; Tong, Tian; Li, Runjia; Yang, Guang; Mohebinia, Mohammadjavad; Qiu, Yi; Vishal, Talari; Zhao, Junyi; Zhang, Wei; Zhong, Hong; Zhang, Hang; Chen, Zhongchen; Zhou, Chaofu; Tong, Xin; Yu, Peng; Hu, Jonathan; Dong, Suchuan; Liu, Dong; Schaibley, John; Bao, Jiming

doi:10.1016/j.mtphys.2021.100558

Cited by 7 publications

(15 citation statements)

References 36 publications

(47 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The long-range Marangoni flow can also be seen from surface temperature distributions because the flow carries heat. [6,7] Figure 3b shows thermal images of ferrofluid 90 s after laser excitation under a different magnetic field. Clearly, hot surface liquid spreads out more along the channel when magnetic field increases, and reaches the maximum under 120 mT, in agreement with the observed ranges.…”

Section: Resultsmentioning

confidence: 99%

“…To further validate the principle and obtain a better picture of the flow field under magnetic field, we developed a CFD simulation model based on our previous work (Figure S2, Supporting Information) [6,7] by incorporating a thermomagnetic body force and temperature dependent viscosity. [14][15][16][24][25][26][27][28] To simplify computation without losing essential physics, the surface deformation was ignored.…”

Section: Resultsmentioning

confidence: 99%

“…The physical parameters of the material have been described in the authors' previous research. [6,7]…”

Section: Methodsmentioning

confidence: 99%

“…The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.202202984. convection, has attracted enormous attention for fundamental research and a wide range of applications for mass transport, [1,2] heat transfer, [3,4] surface deformation, [5][6][7][8] and many fields involving liquids such as lithography, [9,10] microfluidics, [11] alloy welding, [12] and 3D printing. [13] However, Marangoni flow will typically diminish quickly from the liquid surface and become a recirculation flow from the bulk liquid, which limits its many applications.…”

Section: Introductionmentioning

confidence: 99%

“…For example, in laser-induced Marangoni convection, due to the reduced surface tension from laser heating, liquid is pulled away from the laser spot and forms an outward surface flow. [6,7] Because the continuity of fluid and a low local hydrostatic pressure, liquid from the bulk will fill in, draw the surface liquid down to form a complete circulation loop. The speed and size of this circulation loop depends on physical properties of a fluid, such as temperature coefficient of surface tension, thermal conductivity and viscosity, as they will affect the temperature gradient and fluid dynamics.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Magnetically Enhanced Marangoni Convection for Efficient Mass and Heat Transfer like a Self‐Driving Liquid Conveyor Belt

Zhang

Lin

Liu

et al. 2022

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Temperature gradient-induced Marangoni convection has attracted much attention for basic research and applications since it provides an effective means for mass and heat transfer through a liquid surface flow. Here the authors first propose a general principle to enhance such surface flow by hindering its transition to recirculation flow using an external field. They subsequently identify ferrofluid and use it validate the principle since its reduced magnetic susceptibility at higher temperatures will make the heated surface liquid stay on the surface by a thermomagnetic body force. Using a laser beam to create a heated local surface and a magnet beneath the ferrofluid to provide a vertical field, a high speed and long-range Marangoni flow is confirmed experimentally and further supported by computational fluid dynamics simulations. To demonstrate possible applications, the authors show a self-driving pipeless liquid conveyor belt that can efficiently transfer heat from a source to sink without external power. The demonstration of enhanced Marangoni convection opens new avenue to explore interfacial fluid dynamics and its wide applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The physical parameters of the material have been described in the authors' previous research. [6,7]…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Magnetically Enhanced Marangoni Convection for Efficient Mass and Heat Transfer like a Self‐Driving Liquid Conveyor Belt

Zhang

Lin

Liu

et al. 2022

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Spinning a Liquid Wheel and Driving Surface Thermomagnetic Convection with Light

Liu,

Lin,

Qin

et al. 2023

Advanced Materials

Self Cite

View full text Add to dashboard Cite

A typical Tesla thermomagnetic engine employs a solid magnetic wheel to convert thermal energy into mechanical energy, while thermomagnetic convection in ferrofluid is still challenging to observe because it is a volume convection that occurs in an enclosed space. Using a water‐based ferrofluid, we demonstrate a liquid Tesla thermomagnetic engine and report the observation of thermomagnetic convection on a free surface. Both types of fluid motions are driven by light and observed by simply placing ferrofluid on a cylindrical magnet. The surface thermomagnetic convection on the free surface is made possible by eliminating the Marangoni effect, while the spinning of the liquid wheel is achieved through the solid‐like behavior of the ferrofluid under a strong magnetic field. Increasing the magnetic field reveals a transition from simple thermomagnetic convection to a combination of the central spin of the spiky wheel surrounded by thermomagnetic convection in the outer region of the ferrofluid. We further demonstrate the coupling between multiple ferrofluid wheels through a fluid bridge. These demonstrations not only unveil the unique properties of ferrofluid but also provide a new platform for studying complex fluid dynamics and thermomagnetic convection, opening up exciting opportunities for light‐controlled fluid actuation and soft robotics.This article is protected by copyright. All rights reserved

show abstract

Manipulation of Fluid Convection by Surface Lattice Resonance

Jing

Peng

Movsesyan

et al. 2022

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

reported that the fluid flow control can be achieved at the scale of optical wavelengths, which led to the development of applications in biochemical assaybased microfluidics and nanophysics. [1,2] However, the diffraction limit of light restricts optofluidic applications at the molecular level. Additionally, high-intensity optical pulses cause undesirable photo bleaching or photoinduced damage to biomedical molecules in an optofluidic system. Surface plasmons are the collective excitation of free electrons in metals, allowing breaking the diffraction limit for the localization of light into subwavelength dimensions, enabling strong field enhancements and light-matter interactions. [3] In particular, photothermal effects in plasmonic nanoparticles (NPs) can be enhanced via enhanced light absorption, generating heat via nonradiative decay channel. [4][5][6][7][8] One can thereby manipulate fluid flows; and control suspended objects at the subwavelength scale by using plasmonics. Localized surface plasmon (LSP) and surface plasmon polariton (SPP) have been developed to manipulate fluid convection, living cells, DNA, and proteins. [9][10][11][12][13] For example, the photothermal effect caused by LSPs of Au NPs' array in optofluidics was investigated by Miao et al. [12] Such LSP energy-induced optofluidic mixing could obtain high optical-to-thermal energy conversion efficiency. Min et al. showed the optofluidic trapping and manipulation of metallic particles by the excitation of SPP on a thin layer of the gold film. [13] Such a highly confined SPP field, strongly interacting with metallic particles, forms gradient and scattering forces required for the electromagnetic trapping act. Plasmonics can also find its application in high-sensitive biomolecular binding events. For instance, plasmonic nanohole arrays were used as substrates for label-free detection. [14] However, the practical application of these LSP-or SPP-based metasurfaces is limited in plasmonic optofluidics due to the dephasing and broad bandwidth. The high-quality (Q)-factor of the plasmonic surface lattice resonance (SLR) can alleviate the problem. The interference between the LSP and the diffractive behavior of the periodic metallic nanostructures characterizes the SLR. The SLRs are well known for overcoming the damping of LSPs and minimizing scattering losses from gratings, resulting in very narrow bandwidth. Considering that SLRs for noble metal lattices have very high Q-factors with respect to LSPs, the plasmon dephasing time is several orders of magnitude longer for SLRs, [15] allowing long-life light trapping.The capability of plasmonic metasurfaces (PMs) under illumination to generate heat and induce fluid convection is a promising building approach for optofluidic applications. However, the low quality (Q)-factor in PMs introduced into optofluidic applications remains a challenging problem. In this paper, a PM optofluidic platform based on surface lattice resonance (SLR) with a high Q-factor is proposed. Numerical results demonstrate that SLR-...

show abstract

Marangoni convection-driven laser fountains on free surfaces of liquids

Cited by 7 publications

References 36 publications

Magnetically Enhanced Marangoni Convection for Efficient Mass and Heat Transfer like a Self‐Driving Liquid Conveyor Belt

Magnetically Enhanced Marangoni Convection for Efficient Mass and Heat Transfer like a Self‐Driving Liquid Conveyor Belt

Spinning a Liquid Wheel and Driving Surface Thermomagnetic Convection with Light

Manipulation of Fluid Convection by Surface Lattice Resonance

Contact Info

Product

Resources

About