Results 21 to 30 of about 622 (163)
Frontiers in Physics, 2021 One objective of active matter science is to unveil principles by which chaotic microscale dynamics could be transformed into useful work. A nematic liquid crystal environment offers a number of possibilities, one of which is a directional motion of an ...
Mojtaba Rajabi +7 more
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MRI driven magnetic microswimmers [PDF]
Biomedical Microdevices, 2011 Capsule endoscopy is a promising technique for diagnosing diseases in the digestive system. Here we design and characterize a miniature swimming mechanism that uses the magnetic fields of the MRI for both propulsion and wireless powering of the capsule. Our method uses both the static and the radio frequency (RF) magnetic fields inherently available in
Gábor, Kósa +3 more
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Minimum Dissipation Theorem for Microswimmers [PDF]
Physical Review Letters, 2021 8 pages, 5 ...
Babak Nasouri +2 more
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Advanced Intelligent Systems, 2020 In nature, most microorganisms have motility, which is essential for their survival or reproduction. To move, some microorganisms have evolved soft spiral‐shaped flagella, which rotate through specialized motors.
Koki Yoshida, Hiroaki Onoe
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Hydrodynamics of an odd active surfer in a chiral fluid
New Journal of Physics, 2023 We theoretically and computationally study the low-Reynolds-number hydrodynamics of a linear active microswimmer surfing on a compressible thin fluid layer characterized by an odd viscosity.
Yuto Hosaka +2 more
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Autonomous elastic microswimmer [PDF]
Europhysics Letters, 2021 Abstract A model of an autonomous three-sphere microswimmer is proposed by implementing a coupling effect between the two natural lengths of an elastic microswimmer. Such a coupling mechanism is motivated by the previous models for synchronization phenomena in coupled oscillator systems.
Era, Katsutomo +5 more
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Geometric Methods for Efficient Planar Swimming of Copepod Nauplii
Micromachines, 2021 Copepod nauplii are larval crustaceans with important ecological functions. Due to their small size, they experience an environment of low Reynolds number within their aquatic habitat.
Corey Shanbrom +3 more
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Hydrodynamic Choreographies of Microswimmers [PDF]
Scientific Reports, 2018 AbstractWe unveil orbital topologies of two nearby swimming microorganisms using an artificial microswimmer, called Quadroar. Depending on the initial conditions of the microswimmers, we find diverse families of attractors including dynamical equilibria, bound orbits, braids, and pursuit–evasion games. We also observe a hydrodynamic slingshot effect: a
Mehdi Mirzakhanloo +2 more
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Integrated Microfluidic–Electromagnetic System to Probe Single-Cell Magnetotaxis in Microconfinement
Bioengineering, 2023 Magnetotactic bacteria have great potential for use in biomedical and environmental applications due to the ability to direct their navigation with a magnetic field.
Brianna Bradley +2 more
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Magnetically Actuated Colloidal Microswimmers
The Journal of Physical Chemistry B, 2008 To achieve permanent propulsion of micro-objects in confined fluids is an elusive but challenging goal that will foster future development of microfluidics and biotechnology. Recent attempts based on a wide variety of strategies are still far from being able to design simple, versatile, and fully controllable swimming engines on the microscale. Here we
Tierno, P. +3 more
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