Study of micro/nano scale displacement by electro-maglev system using bulk superconductors and permanent magnet

Po Peng Lin, Te Yan Yang, Shih Yun Chen, In Gann Chen

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In order to control the displacement of devices within a micro/nano scale, in this study, an active-magnetic levitation (maglev) system composed of a single-grained Y-Ba-Cu-O high temperature superconductor (HTS) bulk, a rectangular Nd-Fe-B permanent magnet (PM), and a Helmholtz coil was constructed. It is well known that the magnet can be levitated stably above superconductors by the flux trapping effect. By changing the current in the Helmholtz coil, the additional magnetic field was used to adjust the levitation height of the PM. The experimental results show that a D.C. power supply with the sensibility of 10-2 ampere was able to adjust the levitation height to be accurate within a micrometer (μm) range. An optic-fiber displacement sensor was used to measure the micro/nano scale displacement. The linear relationships between applied current, field cooling height, and non-contact displacement were determined and will be discussed in this report.

Original languageEnglish
Pages (from-to)2063-2066
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume17
Issue number2
DOIs
Publication statusPublished - 2007 Jun

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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