Abstract
Diamagnetic graphite (Pyrolytic graphite: PG) plate carries out passive magnetic levitation above high magnetic field without cooling down. By applying this phenomenon, the authors designed a contact-free two dimensional micro positioning model using PG plate and two dimensional (2D) Halbach permanent magnet (PM) array. In this model, the PG plate motion is performed with change in the surrounding magnetic field, which is provided by approaching a small PM piece. And as far as its keeping position, it does not require supplying electrical power. Recently, precise micro motion control of PG plate above 2D Halbach PM array was realized. For nano-scale precise motion control, currently, improving magnetic stiffness of PG plate has performed. This paper presents the result of improvement of magnetic stiffness and more precise motion of PG plate.
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