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Optical switches operated around $\varepsilon$-near-zero (ENZ) of transparent conducting oxides (TCOs) are analyzed. A digital optical switching behavior is derived that is quite different from earlier predictions. The digital modulation characteristic originates from the fact that the nonlinear switching is, to a large extent, performed in the ENZ layer. The ENZ layer, however, arises from carrier...
This paper presents a nonlinear model for a permanent magnet solenoid actuator used in shaker applications. Key features are the calculation of co-energy values using FE methods and the derivation of analytical terms by least-squares fitting. The resulting model captures the main physical effects being compact and accurate. It combines the precision of FEM tools and the low computational cost of analytical...
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