Results 11 to 20 of about 3,190,408 (282)

Programming Tactic Behaviors of Active Colloids via Surface Charge [PDF]

open access: yesACS Nano
Self-diffusiophoretic colloids move autonomously by creating chemical gradients. These self-generated gradients lead to fluid motion at the particle surface, also known as phoretic slip, which determines the direction of colloidal motion.
Juliane Simmchen   +2 more
exaly   +6 more sources

Active Colloids as Models, Materials, and Machines [PDF]

open access: yesAnnual Review of Chemical and Biomolecular Engineering, 2023
Active colloids use energy input at the particle level to propel persistent motion and direct dynamic assemblies. We consider three types of colloids animated by chemical reactions, time-varying magnetic fields, and electric currents. For each type, we review the basic propulsion mechanisms at the particle level and discuss their consequences for ...
Kyle J M, Bishop   +2 more
openaire   +3 more sources

Collective Behavior of Thermally Active Colloids [PDF]

open access: yesPhysical Review Letters, 2012
Colloids with patchy metal coating under laser irradiation could act as local heat sources and generate temperature gradients that could induce self-propulsion and interactions between them. The collective behavior of a dilute solution of such thermally active particles is studied using a stochastic formulation.
Golestanian, Ramin   +2 more
openaire   +6 more sources

Catalytic Self-Phoretic Active Colloids [PDF]

open access: yes, 2017
Active Janus colloids are nano to micron sized colloids, capable of propelling themselves through fluidic environments. Localised, asymmetric catalytic reactions on the colloidal bodies are used to decompose a dissolved ‘fuel’ to produce motion.
Archer, Richard
core   +6 more sources

Using active colloids as machines to weave and braid on the micrometer scale [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2017
Carl Goodrich, Michael Brenner
exaly   +2 more sources

Self Organization of Binary Colloidal Mixtures via Diffusiophoresis

open access: yesFrontiers in Chemistry, 2022
Catalytic activity of the colloids and chemotactic response to gradients of the chemicals in the solution leads to effective interaction between catalytic colloids.
Lijie Lei   +6 more
doaj   +1 more source

Designing active colloidal folders [PDF]

open access: yesThe Journal of Chemical Physics, 2022
Can active forces be exploited to drive the consistent collapse of an active polymer into a folded structure? In this paper, we introduce and perform numerical simulations of a simple model of active colloidal folders and show that a judicious inclusion of active forces into a stiff colloidal chain can generate designable and reconfigurable two ...
S. Das, M. Lange, A. Cacciuto
openaire   +3 more sources

Island hopping of active colloids

open access: yesSoft Matter, 2023
Active Brownian particle (ABP) undergoing island-hopping in an environment of ‘passive’ colloidal islands.
Venkata Manikantha Sai Ganesh Tanuku   +3 more
openaire   +3 more sources

Osmotic pressure modulates single cell cycle dynamics inducing reversible growth arrest and reactivation of human metastatic cells

open access: yesScientific Reports, 2021
Biophysical cues such as osmotic pressure modulate proliferation and growth arrest of bacteria, yeast cells and seeds. In tissues, osmotic regulation takes place through blood and lymphatic capillaries and, at a single cell level, water and ...
Hubert M. Taïeb   +6 more
doaj   +1 more source

Estimating the velocity of chemically-driven Janus colloids considering the anisotropic concentration field

open access: yesFrontiers in Chemistry, 2022
The application of the active colloids is strongly related to their self-propulsion velocity, which is controlled by the generated anisotropic concentration field.
Lijie Lei   +8 more
doaj   +1 more source

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