Light-driven locomotion of a centimeter-sized object at the air–water interface: effect of fluid resistance

Kawashima, H.; Shioi, Akihisa; Archer, Richard J.; Ebbens, Stephen J.; Nakamura, Yoshinobu; Fujii, Syuji

doi:10.1039/c9ra01417a

Cited by 13 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerical analyses indicated that the maximum velocity and acceleration became smaller as the bubble size increased. This should be due to an increase of area of the bubble projected to the locomotion direction in water phase, where the bubbles experience greater resistance, compared to the air phase . Furthermore, the decay time became longer with an increase of bubble size.…”

Section: Results and Discussionmentioning

confidence: 98%

“…This should be due to an increase of area of the bubble projected to the locomotion direction in water phase, where the bubbles experience greater resistance, compared to the air phase. 54 Furthermore, the decay time became longer with an increase of bubble size. This is because the bubble mass is larger and, therefore, greater inertia was at work (see the next section).…”

Section: ■ Experimental Sectionmentioning

confidence: 98%

See 1 more Smart Citation

Light-Driven Locomotion of Bubbles

et al. 2019

Self Cite

View full text Add to dashboard Cite

Remotely controlling the movement of small objects is a challenging research topic, which can realize the transportation of materials. In this study, remote locomotion control of particle-stabilized bubbles on a planar water surface by near-infrared laser or sunlight irradiation is demonstrated. A light-induced Marangoni flow was utilized to induce the locomotion of the bubbles on water surface, and the timing and direction of the locomotion can be controlled by irradiation timing and direction on demand. The velocity, acceleration, and force of the bubbles were analyzed. It was also confirmed that the bubbles can work as light-driven towing engines to pull other objects. Furthermore, it was demonstrated that the bubbles can work as an adhesive to bond two solid substrates by application of compressive stress under water. Such remote transport of the materials, pulling of the objects by light, and controlling the release of gas on demand should open up a wide field of conceivable applications.

show abstract

Section: Results and Discussionmentioning

confidence: 98%

Section: ■ Experimental Sectionmentioning

confidence: 98%

Light-Driven Locomotion of Bubbles

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…S8), and μ is the kinematic viscosity of water. The Re is calculated to be 22.9 to 33.8 (laminar flow state), so the c can be approximated as the friction drag coefficient for laminar flow ( c = 1.328 Re −1/2 ) ( 47 , 48 ). The fluid resistance f is calculated to be 0.073 to 0.13 μN, which is in accordance with the magnitude of the maximum phenomenological resistance (0.071 to 0.093 μN).…”

Section: Resultsmentioning

confidence: 99%

Programmable light-driven swimming actuators via wavelength signal switching

Hou

Guan

et al. 2021

Sci. Adv.

View full text Add to dashboard Cite

Light-driven swimming actuators with different motion modes could lead to many previously unachievable applications. However, controllable navigation often requires focusing light precisely on certain positions of the actuator, which is unfavorable for accurate dynamical operation or in microscale applications. Here, we present a type of programmable swimming actuators that can execute wavelength-dependent multidirectional motions via the Marangoni effect. Several multi-degree of freedom swimming motions have been realized: Forward-and-backward and zigzag actuators can execute one-dimensional (1D) and 2D linear motion, respectively; bidirectional gear rotation as angular motion can be regulated to obtain tunable speeds; and the turning actuator as a "freighter" is able to turn left, right, and go straight for precise maze navigation. A mechanical measurement system is established to quantitatively measure the driving force of the motion directly. The accessible wavelength-selective strategy presented here can inspire further explorations of simple and practical light-driven materials and systems.

show abstract

“…In recent years, there has been an increasing interest in active matters, by constructing and controlling substances or composite systems that exhibit chemically driven self-propulsion. − Such self-propelled systems are expected to have a wide range of applications, such as drug delivery systems, , sensors, and labor-saving pesticides. , In addition, self-propelled systems sometimes play key roles in collective behaviors as natural or artificial micromotors . At the millimeter or smaller size scale where these systems reside, the interfacial tension is often the dominant force.…”

Section: Introductionmentioning

confidence: 99%

Time-Resolved Measurements of Interfacial Tension and Flow Speed of the Inclined Water Surface around a Self-propelled Camphor Boat by the Quasi-elastic Laser Scattering Method

et al. 2023

View full text Add to dashboard Cite

An inclined liquid surface, such as a meniscus, plays an important role in advection and transport phenomena at a liquid's surface. However, there is no time-resolved measurement method for the interfacial tension of an inclined liquid−air interface. Here, a noninvasive method for simultaneous measurements of the interfacial tension and surface flow speed for an inclined water surface is described. This is an upgrade of the quasielastic laser scattering method with a closed-loop control system that introduces the dynamically tracked scattered and referential light into the detector. For the evaluation of the tilt compensation by dynamic tracking, the relationship between the apparent interfacial tension and surface inclination was examined for a water meniscus at 0−5°inclinations. It was also demonstrated that simultaneous measurements of the interfacial tension and surface flow speed around a self-propelled camphor boat on a pure water surface inclined by >3°at the back end of the boat are difficult to conduct accurately without dynamic tracking. Both the interfacial tension difference and the backward flow speed increased as the boat speed increased to 0.1 m/s; that had not been evaluated to date because of the high velocity of the boat and the surface inclination of the water around it. The direct experimental evaluation of the interfacial tension and the flow speed supported the model that the driving force of the camphor boat is the interfacial tension difference and the resistance force proportional to the boat velocity reduces its acceleration.

show abstract

Light-driven locomotion of a centimeter-sized object at the air–water interface: effect of fluid resistance

Abstract: Centimeter-sized flat-headed push pin with photothermal properties can be moved on a water surface by a simple near-infrared laser.

Cited by 13 publications

References 28 publications

Light-Driven Locomotion of Bubbles

Light-Driven Locomotion of Bubbles

Programmable light-driven swimming actuators via wavelength signal switching

Time-Resolved Measurements of Interfacial Tension and Flow Speed of the Inclined Water Surface around a Self-propelled Camphor Boat by the Quasi-elastic Laser Scattering Method

Contact Info

Product

Resources

About