Results 1 to 10 of about 553 (96)

Velocity and Out-Step Frequencies for a Micro-Swimmer Based on Spiral Carbon Nanotubes [PDF]

open access: yesMicromachines, 2023
The existing producing processes of micro spiral swimmers are complex. Here, a microswimmer with a magnetic layer on the surface of the spiral carbon nanotubes is proposed, which has a simple producing process.
Ce Zhang, Shiqi Ma, Lizhong Xu
doaj   +2 more sources

Radar-Based Control of a Helical Microswimmer in 3-Dimensional Space with Dynamic Obstacles [PDF]

open access: yesCyborg and Bionic Systems
Advanced control strategies critical for microrobots have been widely investigated to achieve precise locomotion. However, dynamic obstacle avoidance in 3D space is a major challenge in control that remains unsolved.
Yuezhen Liu   +5 more
doaj   +2 more sources

Self-Propulsion of Two Contacting Bubbles Due to the Radiation Interaction Force [PDF]

open access: yesMicromachines, 2023
In this paper, we consider a new bubble-based microswimmer composed of two contacting bubbles. Under the action of an acoustic field, both bubbles are oscillating, and locomotion of the two-bubble system is observed. A theory is developed that allows one
Alexander A. Doinikov   +4 more
doaj   +2 more sources

Improving Swimming Performance of Photolithography-Based Microswimmers Using Curvature Structures [PDF]

open access: yesMicromachines, 2022
The emergence of robotic microswimmers and their huge potential in biomedical applications such as drug delivery, non-invasive surgery, and bio-sensing facilitates studies to improve their effectiveness.
Liyuan Tan   +4 more
doaj   +2 more sources

Three-sphere swimmer in two dimensions at low Reynolds number condition [PDF]

open access: yesمهندسی مکانیک شریف, 2022
Being widely ubiquitous in fluidic mediums from aquatic environments to bodies, for the sake of their mobility, microorganisms, such as bacteria and motile cells, make use of particular swimming strategies that are counter-intuitive to that of our daily ...
A. Sheikhshoaei, M. Rajabi
doaj   +1 more source

Preformation Characterization of a Torque-Driven Magnetic Microswimmer With Multi-Segment Structure

open access: yesIEEE Access, 2021
Magnetically powered microswimmers exhibit various advantages in practical applications, including simplified propulsion mechanism of nonreciprocal motion in a low Reynolds (Re) number environment, high flexibility, and high efficiency.
Liuxi Xing   +4 more
doaj   +1 more source

Magnetic microswimmers with infrared‐induced shape transformation

open access: yesMicro & Nano Letters, 2021
Soft untethered microswimmers have recently been demonstrated to be capable of transporting and delivering cargos by external control while maintaining biocompatibility and safety.
Runhuai Yang   +4 more
doaj   +1 more source

Interaction of the mechanosensitive microswimmer Paramecium with obstacles

open access: yesRoyal Society Open Science, 2023
In this work, we report investigations of the swimming behaviour of Paramecium tetraurelia, a unicellular microorganism, in micro-engineered pools that are decorated with thousands of cylindrical pillars.
Nicolas Escoubet   +3 more
doaj   +1 more source

Bioinspired enzyme-powered microswimmer for pH-sensitive locomotion in the gastric mucus

open access: yesAIP Advances, 2023
Helicobacter pylori penetrates the gastric mucus by producing ammonia with urease, which locally raises the pH and turns the nearby gel into a solution. Here, we mimic this strategy by proposing an enzyme-powered microswimmer in the gastric mucus in one-
Elika Aghaei   +4 more
doaj   +1 more source

Orientational dynamics and rheology of active suspensions in weakly viscoelastic flows

open access: yesCommunications Physics, 2023
Microswimmer suspensions in Newtonian fluids exhibit unusual macroscale properties, such as a superfluidic behavior, which can be harnessed to perform work at microscopic scales.
Akash Choudhary   +2 more
doaj   +1 more source

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