%0 Journal Article
%T An Impedance-Permeability Self-Resonance of Inductance Coil with Metamaterials
%A Qiang Yu
%A Qian Zhao
%A Yonggang Meng
%J PIER
%@ 1070-4698
%D 2013
%I 
%R 10.2528/PIER12122408
%X An impedance-permeability (Z-) resonance phenomenon is firstly founded and numerically demonstrated when electromagnetic metamaterials with negative permeability are firstly introduced into inductance coil. Numerical results reveal that the impedance-permeability relationship exhibits an extraordinary self-resonant phenomenon at a certain negative value of relative permeability, which is related to the dimensions of the core but nearly independent to the coil size. Such a mechanism is proposed to increase the sensitivity of eddy current (EC) sensors up to about 270 times, offering a new method to greatly improve the sensitivity of EC sensors and the spatial resolution with micrometer scale.
%U http://www.jpier.org/pier/pier.php?paper=12122408