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2017
The aim of this chapter is to review some main theoretical concepts related to MEMS that are used in the course of this book. After a brief introduction to dynamics of MEMS and to parallel-plates capacitive readout—a very popular technique for micromachined devices—and the related pull-in problem, this chapter deals with Lorentz force transduction ...
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The aim of this chapter is to review some main theoretical concepts related to MEMS that are used in the course of this book. After a brief introduction to dynamics of MEMS and to parallel-plates capacitive readout—a very popular technique for micromachined devices—and the related pull-in problem, this chapter deals with Lorentz force transduction ...
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Proceedings. Tenth Annual IEEE International ASIC Conference and Exhibit (Cat. No.97TH8334), 2002
A new set of terminals has been introduced to control the behavior of an MOS device. A magnetic field, formed when current flows through an on-chip coil, is applied to the inversion layer of an MOS device. The generated Lorentz force is applied to the carriers in the inversion layer to alter the characteristics of the MOS device.
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A new set of terminals has been introduced to control the behavior of an MOS device. A magnetic field, formed when current flows through an on-chip coil, is applied to the inversion layer of an MOS device. The generated Lorentz force is applied to the carriers in the inversion layer to alter the characteristics of the MOS device.
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Physics Letters A, 1985
Abstract This letter addresses the frequently made assertion of the Ampere and Lorentz force laws being mathematically identical. It is shown that, in general, the assertion is not true. At the same time both laws will predict identical net forces of repulsion and attraction between closed metallic current circuits.
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Abstract This letter addresses the frequently made assertion of the Ampere and Lorentz force laws being mathematically identical. It is shown that, in general, the assertion is not true. At the same time both laws will predict identical net forces of repulsion and attraction between closed metallic current circuits.
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2017
The (Lorentz-)force law describing the interaction of charged particles with electromagnetic (EM) fields is based primarily on experimental experience. We consider, example by example, how the well-known nonrelativistic Lorentz force dynamics generalizes to relativistic motion. Throughout we use SI units and the relation to Gauss EM units is described.
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The (Lorentz-)force law describing the interaction of charged particles with electromagnetic (EM) fields is based primarily on experimental experience. We consider, example by example, how the well-known nonrelativistic Lorentz force dynamics generalizes to relativistic motion. Throughout we use SI units and the relation to Gauss EM units is described.
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2018
In this book chapter it is shown that the LFE is an interesting alternative to the well-established ECT technique when in nonferromagnetic conductors deep internal defects/anomalies have to be identified. In such cases, complicated structures with moving components lead to very high computational costs, i.e.
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In this book chapter it is shown that the LFE is an interesting alternative to the well-established ECT technique when in nonferromagnetic conductors deep internal defects/anomalies have to be identified. In such cases, complicated structures with moving components lead to very high computational costs, i.e.
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MEMS Lorentz Force Magnetometers
2016Lorentz force magnetometers based on microelectromechanical systems (MEMS) have several advantages such as small size, low power consumption, high sensitivity, wide dynamic range, high resolution, and low cost batch fabrication. These magnetometers have potential applications in biomedicine, navigation systems, telecommunications, automotive industry ...
Agustín Leobardo Herrera-May +2 more
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Five fresh Lorentz force demos
The Physics Teacher, 2019Teaching the Lorentz force, that magnetic fields apply perpendicular forces on moving charges, is often the first lesson of electromagnetism. It is a joy to share this unexpected behavior of magnets. Yet the students do not usually get to handle the apparatus, let alone build it. Typical demonstrations are cathode ray tubes, jumping wires, and possibly
James Lincoln, Nick Moore
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Investigation of a Lorentz force biomagnetometer
IEEE Transactions on Biomedical Engineering, 1997This work evaluates an approach to the noninvasive measurement of small ionic current flows by a technique of Lorentz force magnetometry. An instrument was constructed that is basically a very sensitive force-balance that can measure Lorentz forces experienced by ionic currents flowing in small objects when exposed to strong oscillating magnetic fields.
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Torsional Oscillations with Lorentz Force
The Physics Teacher, 2007We have built a device that uses the Lorentz force on a current-carrying wire situated in a magnetic field, F = I L × B, in order to demonstrate a slowly varying alternating current by means of an optical lever. The apparatus consists of a horseshoe magnet, a length of thin enamel-coated wire (ours was 0.3 mm thick), a signal generator, a rheostat, and
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