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Nanotractor tool measures friction on microscale.(Materials Science/R & D)

Advanced Materials & Processes,  June, 2004  

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A nanotractor instrument that moves in nanometer size steps and provides detailed information about friction at the microscale has been developed at the National Nuclear Security Administration's Sandia National Laboratories, Albuquerque, N.M. The nanotractor is about the width of a human hair, and consists of a plate with a clamp at each end.

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To produce motion, the leading clamp is fixed in place with a large voltage. The plate is then actuated by attracting it towards the substrate, and this causes the plate to bend. As the plate bends, the trailing clamp, which is not loaded, ...

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