LOCATION OPTIMIZATION BASED ON IMPROVED 3D DV-HOP ALGORITHM IN WIRELESS SENSOR NETWORKS





One-dimensional time-Floquet photonic crystal

Using the Floquet Hamiltonian derived based on the time-dependent perturbation theory, we investigated the quasienergy bands of a one-dimensional time-Floquet photonic crystal (PC).The PC contains two alternating layers with different permittivies in the static case which are labeled as A and B.The permittivity of layer A is modulated periodically

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