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Transport Coefficients and Orientational Distributions of Rodlike Particles with Magnetic Moment Normal to the Particle Axis Under Circumstances of a Simple Shear Flow by Akira Satoh; Masataka Ozaki; Teppei Ishikawa; Tamotsu Majima is a Chemistry article available to read on EtoBox.

What is Transport Coefficients and Orientational Distributions of Rodlike Particles with Magnetic Moment Normal to the Particle Axis Under Circumstances of a Simple Shear Flow about?

We have investigated the influences of the magnetic field strength, shear rate, and random forces on transport coefficients such as viscosity and diffusion coefficient, and also on the orientational distributions of rodlike particles of a dilute colloidal dispersion. This dispersion is composed of ferromagnetic spheroidal particles with a magnetic moment normal to the particle axis. In the present analysis, these spheroidal particles are assumed to conduct the rotational Brownian motion in a simple shear flow as well as an external magnetic field. The basic equation of the orientational distribution function has been derived from the balance of the torques and solved numerically. The results obtained here are summarized as follows. For a very strong magnetic field, the rodlike particle is significantly restricted in the field direction, so that the particle points to a direction normal to the flow direction (and also to the magnetic field direction). However, the present particle does not exhibit a strong directional characteristic, which is one of the typical properties for the previous particle with a magnetic moment parallel to the particle axis. That is, the particle can rotate

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Author

Akira Satoh; Masataka Ozaki; Teppei Ishikawa; Tamotsu Majima

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2005

Language

EN

Field

Chemistry (Physical Sciences)