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Machine Design

Nanopositioning Stage

A closed-loop positioning stage exerts 5 N of force in a 17-mm profile.

The motorized stage contains an optical encoder and a piezoelectric Squiggle motor. It supports vertical loads up to 0.5 kg with negligible heating. The motor uses ultrasonic vibrations of a threaded nut to rotate a mating screw, creating linear motion with 2-nm resolution, high stiffness, and little noise.

New Scale Technologies Inc., 10 East Main St., Suite 301, Victor, NY 14564, (585) 924-4450,

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