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The Janis Research cryogen-free sub-K continuous flow cryostat for angle-resolved photoemission spectroscopy is a convenient multi-functional tool, suitable for a wide range of research applications. In this article, the design and operating principles of the cryostat are described.In this study, a resonant type piezoelectric vibrator for driving a flexible body is proposed and its driving principle is discussed. The flexible body driven in this article is rigid in the longitudinal direction and flexible in the transve
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