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Related Concept Videos

Maxwell's Equation Of Electromagnetism01:29

Maxwell's Equation Of Electromagnetism

James Clerk Maxwell (1831–1879) was one of the major contributors to physics in the nineteenth century. Although he died young, he made major contributions to the development of the kinetic theory of gases, to the understanding of color vision, and to understanding the nature of Saturn's rings. He is probably best known for having combined existing knowledge on the laws of electricity and magnetism with his insights into a complete overarching electromagnetic theory, which is represented by...
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Updated: Jul 3, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

Electromagnetic concentrators with reduced material parameters based on coordinate transformation.

Wei Wang1, Lan Lin, Junxian Ma

  • 1State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China.

Optics Express
|July 24, 2008
PubMed
Summary
This summary is machine-generated.

Researchers simplified electromagnetic field concentrators using transverse-electric waves. This work proposes new material tensors for practical applications, improving performance and interface matching.

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Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

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Last Updated: Jul 3, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Area of Science:

  • Electromagnetism
  • Nanophotonics
  • Materials Science

Background:

  • Omni-directional electromagnetic field concentrators were recently introduced using form-invariant coordinate transformations.
  • Practical implementation requires reducing complex material parameters.

Purpose of the Study:

  • To simplify the material parameters of electromagnetic field concentrators for practical applications.
  • To propose concentrators with different permittivity and permeability tensors.
  • To analyze electromagnetic concentrating performance and scattering properties.

Main Methods:

  • Utilized transverse-electric (TE) wave illumination.
  • Theoretically and numerically analyzed electromagnetic concentrating performance.
  • Investigated scattering properties at the concentrator's inner and outer boundaries.
  • Proposed concentrators with varying permittivity and permeability tensors.

Main Results:

  • Reduced complex material parameters for practical implementation.
  • Proposed novel concentrator designs with different material tensors.
  • Achieved simultaneous perfect matching at interior and exterior interfaces.
  • Analyzed electromagnetic performance and scattering characteristics.

Conclusions:

  • A set of material tensors was obtained for a practical electromagnetic field concentrator.
  • The proposed concentrators exhibit optimized performance and interface properties.
  • This research facilitates the future development of advanced electromagnetic devices.