Results 31 to 40 of about 109,951 (269)

Active colloids orbiting giant vesicles [PDF]

open access: yesSoft Matter, 2021
A self-propelled Janus colloid performs a persistent orbital motion around a giant unilamellar vesicle, even when the vesicle size is comparable to the particle size.
Sharma, Vaibhav   +4 more
openaire   +4 more sources

Surface-Enhanced Raman Spectroscopy of Benzylpenicillin Using Silver Nanocrystals Modified with Moroccan Plant Extracts

open access: yesCrystals, 2023
Green chemical routes for the synthesis of colloidal metal nanocrystals have been of great interest, namely in the context of nanosciences associated with biological applications. Among these methods, the synthesis of metal colloids using medicinal plant
Yasmine Fernine   +3 more
doaj   +1 more source

Noise and Synchronization of a Single Active Colloid [PDF]

open access: yesPhysical Review Letters, 2011
A two-state oscillator in a viscous liquid is composed of a micron-scale particle whose intrinsic dynamics is defined by linear potentials that undergo configuration-coupled transitions and is externally driven by a piecewise constant periodic force of varying amplitude and frequency.
Loïc Damet   +5 more
openaire   +4 more sources

Activity-controlled annealing of colloidal monolayers [PDF]

open access: yesNature Communications, 2019
AbstractMolecular motors are essential to the living, generating fluctuations that boost transport and assist assembly. Active colloids, that consume energy to move, hold similar potential for man-made materials controlled by forces generated from within. Yet, their use as a powerhouse in materials science lacks.
Sophie Ramananarivo   +2 more
openaire   +7 more sources

Forced microrheology of active colloids

open access: yesJournal of Rheology, 2022
Particle-tracking microrheology of dilute active (self-propelled) colloidal suspensions is studied by considering the external force required to maintain the steady motion of an immersed constant-velocity colloidal probe. If the probe speed is zero, the suspension microstructure is isotropic but exhibits a boundary accumulation of active bath particles
Zhiwei Peng, John F. Brady
openaire   +3 more sources

Odd viscosity in chiral active fluids [PDF]

open access: yes, 2017
Chiral active fluids are materials composed of self-spinning rotors that continuously inject energy and angular momentum at the microscale. Out-of-equilibrium fluids with active-rotor constituents have been experimentally realized using nanoscale ...
Abanov, Alexander G.   +3 more
core   +4 more sources

Electric and Magnetic Field-Driven Dynamic Structuring for Smart Functional Devices

open access: yesMicromachines, 2023
The field of soft matter is rapidly growing and pushing the limits of conventional materials science and engineering. Soft matter refers to materials that are easily deformed by thermal fluctuations and external forces, allowing for better adaptation and
Koohee Han
doaj   +1 more source

Hybrid Colloids Produced by Sequential Capillarity-assisted Particle Assembly: A New Path for Complex Microparticles

open access: yesCHIMIA, 2017
Colloidal particles have long been under the spotlight of a very diverse research community, given their ubiquitous presence in a broad class of materials and processes, and their pivotal role as model systems.
Songbo Ni   +3 more
doaj   +1 more source

An Active Approach to Colloidal Self-Assembly [PDF]

open access: yesAnnual Review of Physical Chemistry, 2018
In this review, we discuss recent advances in the self-assembly of self-propelled colloidal particles and highlight some of the most exciting results in this field, with a specific focus on dry active matter. We explore this phenomenology through the lens of the complexity of the colloidal building blocks.
Chantal Valeriani   +2 more
openaire   +4 more sources

Active colloidal chains with cilia- and flagella-like motion

open access: yesNew Journal of Physics, 2018
It has been shown that self-assembled chains of active colloidal particles can present sustained oscillations. These oscillations are possible because the effective diffusiophoretic forces that mediate the interactions of colloids do not respect the ...
S Gonzalez, R Soto
doaj   +1 more source

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