Gloos, K. and Schoepe, Wilfried and Simola, J. T. and Tuoriniemi, J. T. (1992) Microsphere viscometers for low temperature applications. Cryogenics 32 (9), pp. 791-798.
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We describe two types of viscometer utilizing metallic microspheres. These spheres are set into stationary translational motion or into translational oscillations. The motion of these charged microparticles is induced and detected via an electric field. The observed damping of the motion yields information on the dissipation mechanisms and the viscosity of the medium investigated. The advantages of our devices for low temperature use are a simple geometry, high resolution, low heat input into the sample and the small sample volume needed. The two viscometers are complementary to each other in the sense that one is applicable at high viscosities while the other is sensitive at low viscosities.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Prof. Wilfried Schoepe|
|Keywords:||iscometers; magnetic levitation; dissipation mechanisms|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||17 Dec 2010 08:17|
|Last Modified:||17 Dec 2010 08:17|
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