AN IMPEDANCE-PERMEABILITY SELF-RESONANCE OF INDUCTANCE COIL WITH METAMATERIALS | Zendy

Qiang Yu | Zendy; Qian Zhao | Zendy; Yonggang Meng | Zendy

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AN IMPEDANCE-PERMEABILITY SELF-RESONANCE OF INDUCTANCE COIL WITH METAMATERIALS

Author(s) -

Qiang Yu,

Qian Zhao,

Yonggang Meng

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier12122408

Subject(s) - inductance , electromagnetic coil , electrical impedance , permeability (electromagnetism) , metamaterial , materials science , relative permeability , rlc circuit , nuclear magnetic resonance , eddy current , resonance (particle physics) , acoustics , optoelectronics , porosity , physics , voltage , chemistry , electrical engineering , capacitor , composite material , engineering , biochemistry , membrane , particle physics

An impedance-permeability (Z-"r) resonance phenomenon is flrstly found and numerically demonstrated when electromag- netic metamaterials with negative permeability are flrstly introduced into inductance coil. Numerical results reveal that the impedance- permeability relationship exhibits an extraordinary self-resonant phe- nomenon at a certain negative value of relative permeability, which is related to the dimensions of the core but nearly independent of the coil size. Such a mechanism is proposed to increase the sensitivity of eddy current (EC) sensors up to about 270 times, ofiering a new method to greatly improve the sensitivity of EC sensors and the spatial resolution with micrometer scale.

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