All-fiber impurity collector based on laser-induced microbubble

Liu, Zhihai; Lei, Jiaojie; Liu, Keqiang; Liu, Wei; Zhang, Ruiwei; Zhang, Yaxun; Yang, Xinghua; Zhang, Jianzhong; Yang, Jun; Yuan, Libo

doi:10.1016/j.optcom.2019.01.001

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…It is important to note that the laser-induced thermocapillary effect is not limited to problems involving the study of interfacial flows and interface deformation in single-or multilayer systems, as discussed in this review. A large research area is associated with the application of the laser-induced thermocapillary transfer of micro-and nanoobjects suspended in liquid layers/droplets with the free liquid-air interface [1,85,86] or in the confined liquid medium [87][88][89] for applications in photothermal self-assembly technologies. Interestingly, to generate flows in the confined liquid medium, the free interface activating the motion is artificially created via generating a vapor microbubble on a substrate by heating with a laser beam [87][88][89].…”

Section: Discussionmentioning

confidence: 99%

“…A large research area is associated with the application of the laser-induced thermocapillary transfer of micro-and nanoobjects suspended in liquid layers/droplets with the free liquid-air interface [1,85,86] or in the confined liquid medium [87][88][89] for applications in photothermal self-assembly technologies. Interestingly, to generate flows in the confined liquid medium, the free interface activating the motion is artificially created via generating a vapor microbubble on a substrate by heating with a laser beam [87][88][89]. Moreover, a sharp increase in temperature can be induced by strong radiation absorption of a substrate itself or by the absorption of a plasmonic particle.…”

Section: Discussionmentioning

confidence: 99%

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Interfacial Flows and Interfacial Shape Modulation Controlled by the Thermal Action of Light Energy

Иванова

2022

Colloids and Interfaces

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The review covers the research on thermocapillary convection caused by the thermal action of laser radiation in single-layer and bilayer liquid systems of capillary thickness. The advantages of using optical radiation are the instantaneous delivery of thermal energy to a place on demand (a bulk phase, interfaces); low radiation power required; concentrating heat flux on a spot of a few micrometers; the production of arbitrary spatial distributions of radiation intensity; and, as a result, corresponding thermal fields at a liquid interface and their fast reconfiguration. Thermocapillary stresses at the liquid interfaces lead to the transfer of the liquid and a change in the shape of the interface, in accordance with the distribution of the light-induced thermal field. Studies concerned with the methods of non-destructive testing of liquid media and solids, which are based on a photothermocapillary signal emitted by a laser-induced concave deformation of a thin layer, are considered. Features of thermocapillary deformation of a liquid–air interface caused by local heating of thin and thick (exceeding the capillary length) layers are demonstrated. A part of the review addresses the results of the study of thermocapillary rupture of films in the heating zone and the application of this effect in semiconductor electronics and high-resolution lithography. The works on the light-induced thermocapillary effect in bilayer (multilayer) liquid systems are analyzed, including early works on image recording liquid layer systems, liquid IR transducers, and nonlinear optical media.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Interfacial Flows and Interfacial Shape Modulation Controlled by the Thermal Action of Light Energy

Иванова

2022

Colloids and Interfaces

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“…Microbubbles, can be applied to a lot of biological, industrial and medical uses [10][11][12][13][14][15][16][17][18][19]; an example of this is found in photothermal therapy, for treating localized tumors [5,20]. Another example of great interest is the microjets generated by thermocavitation; to generate injections without the use of needles through the high acquired speed of the liquid after cavitation [5,21].…”

Section: Introductionmentioning

confidence: 99%

Microbubbles with optical fiber tips chemically worn

Villegas-Sánchez¹,

Cerecedo-Núñez²,

García-Ramírez³

et al. 2020

J. Phys. D: Appl. Phys.

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This research shows an experimental study and analysis on microbubbles formation, through the use of chemically modified optical fiber tips. Microbubbles are formed in highly absorbent liquid using a continuous wave laser at 980 nm, with conventional powers. This report is considered, as the first study and dynamic analysis for microbubble formation in solution with these particular types of tips. Fiber tips are modified by the chemical wear method, using hydrofluoric acid, while, microbubbles are generated with the help of the deposition or adhesion of nanostructures on the modified tips. We have used carbon nanotubes dissolved in ethanol as nanostructures. We present an analysis of the results considering: the growth curves of the microbubbles, the largest radii, the lifetime and the growth rate. Finally, we discuss the important features of results, suggesting a possible way to control the size and number of microbubbles. Furthermore, the results of our research could be useful to improve the proposals of earlier applications or to propose new ones. The results shown can be useful for new applications or to improve proposals.

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Laser-driven Marangoni flow and vortex formation in a liquid droplet

Gupta¹,

Kolwankar²,

Gore

et al. 2020

Physics of Fluids

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We present a systematic study of the laser-driven Marangoni flow and curvature induced vortex formation in a copper sulfate pentahydrate solution, visualized by dispersed carbon nanotube (CNT) bundles. The experiments are carried out using different objectives of numerical aperture (NA) in the range of 0.1–0.6 to investigate the effect of focusing on the flow dynamics. The flow velocities measured (for 0.1 NA) are in the range of 2 mm/s–5 mm/s depending on the size of CNTs. Both primary and secondary vortices are observed in our experiment. In the primary vortex, with a sixfold increase in NA, a tenfold increase in the angular velocity of CNTs is measured. We also discuss the important role played by the curvature of the droplet in the vortex formation. The numerical simulations carried out for flow velocity are in agreement with the experimental values.

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All-fiber impurity collector based on laser-induced microbubble

Cited by 3 publications

References 38 publications

Interfacial Flows and Interfacial Shape Modulation Controlled by the Thermal Action of Light Energy

Interfacial Flows and Interfacial Shape Modulation Controlled by the Thermal Action of Light Energy

Microbubbles with optical fiber tips chemically worn

Laser-driven Marangoni flow and vortex formation in a liquid droplet

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