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Thomas B. Jones, Professor, University of Rochester
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Thomas B. Jones, Professor, University of Rochester
"Electromechanics of Particles" Abstract: Particles ranging in size from nanometers to millimeters experience electrical (or magnetic) forces and torques that result from their properties and shapes. The consequent phenomenology, often quite complex, is exploited beneficially in certain technologies (e.g., electrophotography) and struggled with in some other technologies (e.g., cleanroom contamination). Further, it is genuinely puzzled over in some exciting branches of the natural sciences. An hour’s presentation cannot even begin to catalogue the great diversity of field/particle interactions. Still, it seems worthwhile to attempt a start with a brief exploration of particle electromechanics, which concerns effects resulting from dielectric polarization (or magnetization). After covering some basics, I will review elements of the effective multipolar method of electric force and torque calculation, and reveal the breadth of problems where it may be usefully employed to create reduced-order models. These models lead to valuable physical insight that may be used to guide numerical simulations based on finite element simulation. February 21, 2008 3:30 pm - 4:30 pm 2246 SRB Auditorium |
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