Results 131 to 140 of about 4,513 (242)
Dual‐Laser Optical Tweezers for Photothermal Analysis of Hybrid Microgels
Advanced Science, Volume 13, Issue 7, 3 February 2026.Dual‐laser optical tweezers unlock real‐time, single‐particle resolution of light‐driven actuation. Direct visualization and precise quantification of size changes under varying laser intensity provide new insights, overcoming limitations of conventional microscale actuator analysis.
Se‐Hyeong Jung +4 more
wiley +1 more source
Confined active Brownian particles: theoretical description of propulsion-induced accumulation
New Journal of Physics, 2018 The stationary-state distribution function of confined active Brownian particles (ABPs) is analyzed by computer simulations and analytical calculations. We consider a radial harmonic as well as an anharmonic confinement potential. In the simulations, the
Shibananda Das +2 more
doaj +1 more source
Effective swimming strategies in low Reynolds number flows
, 2011 The optimal strategy for a microscopic swimmer to migrate across a linear shear flow is discussed. The two cases, in which the swimmer is located at large distance, and in the proximity of a solid wall, are taken into account.
A. Najafi +33 more
core +2 more sources
Simulation-based analysis of a biologically-inspired micropump with a rotating spiral inside a microchannel [PDF]
, 2008 Microorganisms such as bacteria use their rotating helical flagella for propulsion speeds up to tens of tail lengths per second. The mechanism can be utilized for controlled pumping of liquids in microchannels.
Koz, Mustafa +2 more
core
Physics of Microswimmers - Single Particle Motion and Collective Behavior
, 2014 Locomotion and transport of microorganisms in fluids is an essential aspect of life. Search for food, orientation toward light, spreading of off-spring, and the formation of colonies are only possible due to locomotion.
Elgeti, Jens +2 more
core +1 more source
Microswimmers Knead Nematics into Cholesterics
Physical Review LettersThe hydrodynamic stresses created by active particles can destabilise orientational order present in the system. This is manifested, for example, by the appearance of a bend instability in active nematics or in quasi-2-dimensional living liquid crystals consisting of swimming bacteria in thin nematic films.
Bhavesh Gautam, Juho S. Lintuvuori
openaire +3 more sources
Setting the pace of microswimmers: when increasing viscosity speeds up self-propulsion
New Journal of Physics, 2017 It has long been known that some microswimmers seem to swim counter-intuitively faster when the viscosity of the surrounding fluid is increased, whereas others slow down.
Jayant Pande +4 more
doaj +1 more source
Optimal Control of Slender Microswimmers [PDF]
, 2017 We discuss a reduced model to compute the motion of slender swimmerswhich propel themselves by changing the curvature of their body. Our approach isbased on the use of Resistive Force Theory for the evaluation of the viscous forcesand torques exerted by the surrounding fluid, and on discretizing the kinematicsof the swimmer by representing its body ...
Zoppello, Marta +4 more
openaire +4 more sources
A low-Reynolds-number treadmilling swimmer near a semi-infinite wall
, 2011 We investigate the behavior of a treadmilling microswimmer in a two-dimensional unbounded domain with a semi-infinite no-slip wall. The wall can also be regarded as a probe or pipette inserted into the flow.
Obuse, Kiori, Thiffeault, Jean-Luc
core +1 more source
The collective motion of a binary pusher-puller mixture in viscoelastic fluids
Engineering Applications of Computational Fluid MechanicsThis study investigates the collective dynamics of the binary pusher-puller mixtures in Giesekus viscoelastic fluids using the fictitious domain method, with a focus on the synergistic effects of the mixture composition and fluid elasticity on clustering
Minkang Zhang +5 more
doaj +1 more source