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Analysis of the scattering of electromagnetic waves by charged sphere
Published in Amir Hussain, Mirjana Ivanovic, Electronics, Communications and Networks IV, 2015
Zijia Zhang, Qi Pan, Haixiu Chen, Wanwan Ma
The excess charges carried by the particles and distributed on the surface will move to the incident external electromagnetic field, and form the current. The excess surface charges actually increase the surface charge density, thereby, increase the surface conductivity. The excess charges can affect the total scattering cross-section, scattering efficiency, or the distribution of scattered energy.
Scattering of eigenmodes of planar dielectric waveguide with PEC wall by graphene strip grating at THz
Published in Waves in Random and Complex Media, 2021
Mstislav E. Kaliberda, Leonid M. Lytvynenko, Sergey A. Pogarsky
Graphene is rather new 2d material with exceptional properties in the THz frequency range. It represents a one-atom thick layer of graphite. Graphene is famous for being mechanically strong, electrically conductive, and optically transparent. It can support surface plasmon polariton (SPP) waves and corresponding plasmon resonances at THz. Many metals support SPP waves but at much higher frequencies such as near-infrared and optical bands. The surface conductivity can be dynamically tuned by changing the applied electrostatic or magnetostatic doping. In such way one can control, for example, plasmon excitation and plasmon resonances [4,5]. This feature constitutes one of the main advantages of graphene over conventional materials and opens very interesting perspectives in the context of tunable devices.
Preparation and characterization of PANI-PPY/PET fabric conductive composite for supercapacitors
Published in The Journal of The Textile Institute, 2022
Xiangyu Xie, Binjie Xin, Zhuoming Chen, Yingqi Xu
The surface load (mg/cm2) of the active material of the fabric electrode is calculated as follows: PANI/PPy surface load=(Wf-Wi)/A, where Wf and Wi (mg) are the final weight and initial weight of the fabric, and A is the fabric electrode area (cm2). The surface conductivity of the fabric electrode is measured by the RTS-8 four-point probe measuring system. The surface morphology of the sample was performed on a field emission scanning electron microscope (FE-SEM, SU8010, Hitachi).