Theoretical description of the thermomolecular orientation of anisotropic colloids

Literature Information

Publication Date 2018-12-19
DOI 10.1039/C8CP06780E
Impact Factor 3.676
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Abstract

Thermal fields bring new opportunities to manipulate colloidal suspensions. Mass anisotropy inside the colloid leads to the thermal orientation effect and to a non-monotonic dependence of the thermophoretic force with the mass of the colloid. We show here that the thermal orientation of these anisotropic colloids can be described using the von Mises probability distribution. We derive equations that link the orientation to the internal degrees of freedom of the colloid, and test these equations using both atomistic and mesoscopic stochastic rotation dynamics simulations. Our approach can be used to describe the thermophoretic response of anisotropic colloids as a function of their size and composition.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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