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Noncontact manipulation and delivery technique for a spherical object

Applied Physics Express, ISSN: 1882-0778, Vol: 6, Issue: 9
2013
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Article Description

We propose noncontact manipulation and delivery technique of a spherical object. The electromagnetically induced torque can apply spin to a sphere and transport it along an arbitrary route on a horizontal substrate through rolling motion. The technique is useful also as a device for the measurement of viscosity of a surrounding medium. The accuracy of the viscosity is better than 5%, even in the low viscosity range around 1mPa s. The technique was also employed for the measurement of the rolling friction, which would be an effective measure for monitoring the state of the contacting substrate. © 2013 The Japan Society of Applied Physics.

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