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Creators/Authors contains: "Zheng, Tianyu"

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  1. ; ; ; ; ; ; ; ; (, Journal of the American Chemical Society)
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  2. ; ; ; ; ; (, IEEE Transactions on Microwave Theory and Techniques)
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  3. ; ; ; ; ; ; ; ; ; ; et al (, Chem)
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  4. ; ; ; ; ; (, Proc. of 14th European Conference on Antennas and Propagation (EuCAP))
    The degenerate band edge (DBE) is a special fourth-order degenerate point in a dispersion diagram, where four eigenmodes coalesce to a single degenerate eigenmode. It leads to field enhancement of the Bloch mode and to high quality factors, which are useful for high-Q resonators, oscillators and ultrasensitive sensors. The air-filled substrate integrated waveguide (AFSIW) is a novel form of SIW which is low cost and low loss. We propose a design of an AFSIW supporting a degenerate band edge (DBE). We show the occurrence of the so-called “giant resonance” associated to the DBE and we study how losses influence the DBE. 
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  5. ; ; ; ; ; (, Published in: 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA))
    The novel concept of degenerate band edge (DBE) has been recently proposed by Figotin et al., in the framework of their study of slow wave propagation in photonic crystals [1]. The degenerate band edge is a special dispersion condition near the edge of the Brillouin zone ( kd=π/p, p is the spatial period) where four degenerate Bloch modes coalesce at a same frequency fd (two propagating modes and two evanescent modes). The dispersion relation is locally described by a quartic curve f−fd=−α(k−kd) where fd is the DBE frequency and α is a positive constant that depends on the parameters of the structure. 
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