Results 61 to 70 of about 622 (163)

Thermometric Based‐Microswimmers with Chemical and Optical Engines

Advanced Intelligent Systems, EarlyView.
Temperature sensing at small scales is typically performed using passive luminescent particles. Here, an alternative approach is demonstrated by integrating upconversion thermometry into self‐propelled microswimmers powered by chemical fuels or light. This strategy offers a step toward dynamic thermal sensing at the microscale, relevant to both lab‐on ...
João M. Gonçalves, Katherine Villa
wiley   +1 more source

Flagellar dynamics of chains of active Janus particles fueled by an AC electric field

New Journal of Physics, 2018
We study the active dynamics of self-propelled asymmetrical colloidal particles (Janus particles) fueled by an AC electric field. Both the speed and direction of the self-propulsion, and the strength of the attractive interaction between particles can be
Daiki Nishiguchi, Junichiro Iwasawa, Hong-Ren Jiang, Masaki Sano   +3 more
doaj   +1 more source

Spontaneous vortex formation by microswimmers with retarded attractions

Nature Communications, 2023
Time-delayed interactions involving perception, decision, and reaction, are omnipresent in the living world. Here, the delayed self-propulsion of a microswimmer toward a target gives rise to chiral orbital motion via a symmetry-breaking bifurcation ...
Xiangzun Wang, Pin-Chuan Chen, Klaus Kroy, Viktor Holubec, Frank Cichos   +4 more
doaj   +1 more source

Microfluidic Mixing with the Dynamic Control of Magnetic Actuation

Advanced Intelligent Systems, EarlyView.
Schematic illustration and flow field visualization of magnetically actuated L‐shaped microrobots displaying cooperative vortex generation for enhanced microscale mixing. The left side shows the electromagnetic actuation setup, which enables programmable control of rotational direction and frequency.
Prashant Kishor Sharma, Tsung‐Yen Lu, Chia‐Yuan Chen   +2 more
wiley   +1 more source

Micro/nanorobots for detecting and eliminating biological and chemical warfare agents

BMEMat, EarlyView.
Fuel‐powered and field‐driven micro/nanorobots provide a cutting‐edge platform to safeguard national security and defense. This review reports the latest research progress in micro/nanorobots in sensing and detoxifying biological and chemical warfare agents.
Song Li, Huaijuan Zhou, Di Shi, Zdeněk Sofer, Jinhua Li   +4 more
wiley   +1 more source

Dynamics of microswimmers near a soft penetrable interface

Physical Review Research, 2022
Few simulations exist for microswimmers near deformable interfaces. Here, we present numerical simulations of the hydrodynamic flows associated with a single microswimmer embedded in a binary fluid mixture. The two fluids demix, separated by a penetrable
Chao Feng, John J. Molina, Matthew S. Turner, Ryoichi Yamamoto   +3 more
doaj   +1 more source

A frictionless microswimmer

New Journal of Physics, 2007
We investigate the self-locomotion of an elongated microswimmer by virtue of the unidirectional tangential surface treadmilling. We show that the propulsion could be almost frictionless, as the microswimmer is propelled forward with the speed of the backward surface motion, i.e. it moves throughout an almost quiescent fluid.
Leshansky, Alexander M., Kenneth, Oded, Gat, Omri, Avron, Joseph E.   +3 more
openaire   +2 more sources

Topographical pathways guide chemical microswimmers [PDF]

Nature Communications, 2016
AbstractAchieving control over the directionality of active colloids is essential for their use in practical applications such as cargo carriers in microfluidic devices. So far, guidance of spherical Janus colloids was mainly realized using specially engineered magnetic multilayer coatings combined with external magnetic fields.
Juliane Simmchen, Jaideep Katuri, William E. Uspal, Mihail N. Popescu, Mykola Tasinkevych, Samuel Sánchez   +5 more
openaire   +5 more sources

Intratumoral bacteria engineered for tumor therapy

Interdisciplinary Medicine, EarlyView.
This article comprehensively reviews engineered intratumoral bacteria used in tumor therapy. The concept development, characteristics, and engineering methods of intratumoral bacteria are summarized. The mechanisms and the translational significance by which engineered intratumoral bacteria interfere with tumor progression are discussed and highlighted.
Huajie Zhang, Zelin Chen, Zeyu Yao, Sishi Luo, Cheng Luo, Rui Yang, Hao Fu, Songyin Huang   +7 more
wiley   +1 more source

Control and controllability of microswimmers by a shearing flow

Royal Society Open Science, 2021
With the continuing rapid development of artificial microrobots and active particles, questions of microswimmer guidance and control are becoming ever more relevant and prevalent. In both the applications and theoretical study of such microscale swimmers,
Clément Moreau, Kenta Ishimoto, Eamonn A. Gaffney, Benjamin J. Walker   +3 more
doaj   +1 more source