Results 31 to 40 of about 3,190,408 (282)
Active colloidal molecules [PDF]
EPL (Europhysics Letters), 2018 Like ordinary molecules are composed of atoms, colloidal molecules consist of several species of colloidal particles tightly bound together. If one of these components is self-propelled or swimming, novel "active colloidal molecules" emerge. Active colloidal molecules exist on various levels such as "homonuclear", "heteronuclear" and "polymeric" and ...
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Sedimentation and levitation of catalytic active colloids
Physical Review Research, 2023 Gravitational effects in colloidal suspensions can be easily turned off by matching the density of the solid microparticles with the one of the surrounding fluid. By studying the motion of catalytic microswimmers with tunable buoyant weight, we show that
V. Carrasco-Fadanelli, I. Buttinoni
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Activity-controlled annealing of colloidal monolayers [PDF]
Nature 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
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Crystals, 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
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Active colloids at fluid interfaces
Soft Matter, 2016 If an active Janus particle is trapped at the interface between a liquid and a fluid, its self-propelled motion along the interface is affected by a net torque on the particle due to the viscosity contrast between the two adjacent fluid phases. For a simple model of an active, spherical Janus colloid we analyze the conditions under which translation ...
Malgaretti, P. +2 more
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Active Anisotropic Colloids from Colloidal Monolayers [PDF]
, 2021 In this thesis we describe several colloidal model systems. We first study the lattice structures in monolayers of colloidal superballs prepared using the unidirectional rubbing method. In this method, the ordering of the colloidal superballs is achieved by mechanically rubbing them onto a polydimethylsiloxane- (PDMS) coated surface. We show using both
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An Active Approach to Colloidal Self-Assembly [PDF]
Annual 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.
Mallory, S. A. +2 more
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Light-activated self-propelled colloids [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 Light-activated self-propelled colloids are synthesized and their active motion is studied using optical microscopy. We propose a versatile route using different photoactive materials, and demonstrate a multiwavelength activation and propulsion. Thanks to the photoelectrochemical properties of two semiconductor materials (α-Fe
Palacci, J. +5 more
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Emergent behavior in active colloids [PDF]
, 2016 Active colloids are microscopic particles, which self-propel through viscous fluids by converting energy extracted from their environment into directed motion.
Stark, Holger, Zöttl, Andreas
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Colloids for nanobiotechnology: An introduction
, 2022 S.1-7This chapter presents a short definition of "colloids for nanobiotechnology." This involves a discussion of nomenclature, which often is not precisely defined and so different words are used for the same material.
Parak, W.J., Feliu, N.
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