Electromagnetic lévitation of micro-scale actuators using microwave cavity resonators

A. J. Sangsterand, E. McErlean

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The difficulties of achieving electromagnetic lévitation of a small conducting disc, by employing the electric field distribution within the capacitive element of a high frequency resonant system, are discussed. It is shown that as the frequency of the system is raised in order to miniaturise it, the attractive electric lévitation force is increasingly counteracted by an oppositely directed Lorentz force. This latter force has to be isolated if effective lévitation is to be procured. In 'standing-wave' type microwave resonators, the separation of the electric field force and the Lorentz force calls for careful cavity selection and the judicious use of field-selective leakage apertures. © IEE, 2000.

Original languageEnglish
Pages (from-to)359-363
Number of pages5
JournalIEE Proceedings - Microwaves, Antennas and Propagation
Volume147
Issue number5
DOIs
Publication statusPublished - Oct 2000

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