Arrays of permanent magnet elements have been utilized as light-weight, inexpensive sources for applying external magnetic fields in magnetic drug targeting applications, but they are extremely limited in the range of depths over which they can apply useful magnetic forces. In this paper, designs for optimized magnet arrays are presented, which were generated using an optimization routine to ma...

This article proposes a practical design guide for linear electromagnetic actuator based on the concept of magnetic screw transmission, in which manufacturing and assembly technologies are investigated. The surface-inserted is first used to form required helical-shape pole, exhibits simple processing, high precision, robust structure. Moreover, different topologies developed using 3-D finite-el...

A voice coil motor is a type of permanent magnet linear motor, which based on the Ampere force theorem. It has following advantages: simple structure, small size, no cogging force, and fast response time. In this study, was designed to provide x-directional thrust in magnetically levitated cable table lithography machine. The study Halbach array, adopted single-sided, coreless, flat-type struct...

Answering a question formulated by Halbach (2009), I show that a disquotational truth theory, which takes as axioms all positive substitutions of the sentential T-schema, together with all instances of induction in the language with the truth predicate, is conservative over its syntactical base. §