1A2-F09 A Low-Profile Ultrasonic Motor Using Sector Shaped Vibrators for High Magnetic Field(Robotics & Mechatronics in Hyper Environment)

Abstract

The purpose of this research is to apply a low-profile ultrasonic motor using sector shaped vibrators for sample spinning of the solid-state nuclear magnetic resonance (NMR) analysis. We have fabricated the motor made of nonmagnetic materials. The transducer consists of two sector shaped vibrators. The maximum diameter of this motor is 17 mm and the height is 41.5 mm. We have evaluated the driving performance of this motor in high magnetic field. As a result, the magnetic field had a small effect on the rotation performance of the motor. Therefore the motor can be used for sample spinning of the solid-state NMR analysis.