NEW CONCEPT OF FORCE REALIZATION BASED ON MACROSCOPIC QUANTUM EFFECT

Jae-Hyuk Choi, Mahn-Soo Choi, Min-Seok Kim, Yon-Kyu Park, Jin-Hoon Sohn

Abstract

We present a new concept of force realization, flux quantum-based mechanism in the sub-pico-Newton range. By controlling the number of flux quantum in a superconducting ring, a force can be generated as an integer multiple of a constant force step. For a 50 nm-thick Nb annulus with the inner and outer radii of 5 µm and 10 µm, respectively, and the field gradient of 10 T/m the force step is estimated to be 184 fN. Realization procedure, feasibility, and the stability against thermal fluctuations are also addressed.

Keywords

force realization, quantum-based, sub-pico-Newton

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PWC-2006-TC3-041u.pdf

DOI

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IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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