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Hæmolytic Activity of Colloidal Silica
Nature, 1961COLLOIDAL silica is highly toxic when administered parenterally1,2. In isolated biological systems silica has been shown to interfere with some enzymes3,4, activate blood clotting and pharmacologically active substances in plasma5 and interfere with the red cell envelope6.
J D, HARLEY, J, MARGOLIS
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Active sculpting of colloidal crystals
The Journal of Chemical Physics, 2019The development of colloidal particles that can become self-propelled when exposed to a source of light of a given frequency represents one of the most exciting new developments in the field of active matter. In this paper, we perform numerical simulations to explore several properties of crystalline colloidal aggregates in the presence of such ...
S. Das +3 more
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Chemically active colloidal superstructures
NanoscaleThis review explores the self-propulsion mechanisms of chemically driven colloidal motors, the principles of their chemical communication, and strategies for the directed assembly of active colloidal superstructures.
Yang Huang +3 more
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Artificial Chemotaxis of Self-Phoretic Active Colloids: Collective Behavior.
Accounts of Chemical Research, 2018Microorganisms use chemotaxis, regulated by internal complex chemical pathways, to swim along chemical gradients to find better living conditions. Artificial microswimmers can mimic such a strategy by a pure physical process called diffusiophoresis ...
H. Stark
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Soft Matter, 2020
The emerging field of active matter, and its subset active colloid, is in great need of good model systems consisting of moving entities that are uniform and highly tunable.
Pengzhao Xu +4 more
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The emerging field of active matter, and its subset active colloid, is in great need of good model systems consisting of moving entities that are uniform and highly tunable.
Pengzhao Xu +4 more
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Surface Activity of Soft Polymer Colloids
Langmuir, 2019We investigate the behavior of polymer colloids at the interface between two immiscible liquids using molecular dynamics simulations. We study several colloid morphologies with various degrees of amphiphilicity, that is, purely solvophobic homogeneous and Janus particles and amphiphilic Janus and core-shell particles.
Tatiana I. Morozova, Arash Nikoubashman
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Diffusiophoresis of active colloids in viscoelastic media.
Soft Matter, 2019Self-diffusiophoresis of synthetic Janus (Si/Pt) microspheres in the presence of hydrogen peroxide in complex environments is here investigated. We aim to address the single particle dynamics of these active colloids in different viscoelastic fluids ...
Shabab Saad, G. Natale
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Biological activity of nanoscale colloidal selenium
Doklady Biochemistry and Biophysics, 2012Several studies have shown that elements (metals and nonmetals) in the nanoscale form are much less toxic and do not accumulate in the body, as they are assimilated as trace elements in the process of metab olism. Thus, the active ingredients of drugs and feed additives in the form of nanoscale elements are com plexes of nanoparticles, which are ...
I N, Nikonov +7 more
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Clustering-induced velocity-reversals of active colloids mixed with passive particles.
Journal of Chemical Physics, 2019Recent experiments have shown that colloidal suspensions can spontaneously self-assemble into dense clusters of various internal structures, sizes, and dynamical properties when doped with active Janus particles.
F. Hauke, H. Löwen, B. Liebchen
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Mobile nanotweezers for active colloidal manipulation
Science Robotics, 2018Mobile nanotweezers integrate plasmonic nanostructures with magnetic, helical microrobots for manipulation of nano-objects.
Souvik Ghosh, Ambarish Ghosh
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