Forces between two colloidal particles in a nematic solvent

Article Abstract:

The molecular dynamics (MD) is used to study the structure around two spherical colloidal particles embedded in a nematic liquid crystal host. The result enables to examine the effects of the presence of multiple particles on a nematic. The MD is further used to study the forces on the particles for different separations and orientations with respect to the nematic director, and comparison of the results to the theoretical predictions is made.

Nematocides, Colloid chemistry

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Configurational temperature in membrane simulations using dissipative particle dynamics

Article Abstract:

Dissipative particle dynamics (DPD) has become a popular tool for simulating the behavior of both simple and complex fluids. It consists of the solution of the classical equations of motion for a system of interacting particles, together with a set of stochastic and dissipative forces, which control the temperature and allow one to choose the viscosity.

Viscosity, Lipid membranes, Dynamics of a particle, Particle dynamics, Mechanical properties

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Proof of single-molecule sensitivity in surface enhanced Raman scattering (SERS) by means of a two-analyte technique

Article Abstract:

A method to pin down unambiguous proof for single-molecule sensitivity in surface enhanced Raman spectroscopy (SERS) was proposed. The method eliminates most of the uncertainties associated with low dye concentrations and shows that single- or few-molecule signals are very common in SERS, both in liquid and on dry substrates.

Gum and Wood Chemical Manufacturing, Gum and wood chemicals, Natural Tanning & Dyeing Materials, Usage, Raman spectroscopy, Dyes and dyeing, Dyes, Atomic properties

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