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Imaging properties and negative refraction of the metallic photonic crystal at near-infrared frequency
Authors:Shuai Feng  Yuxi Li  Bo Lei  Jieying Hu  Yiquan Wang  Wenzhong Wang
Institution:1. Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China;2. School of Aeronautics and Astronautics, Dalian University of Technology, Dalian, 116024, China;1. Duke University Math Department, 120 Science Drive, Rm 117 Physics Bldg, Durham, NC 27708-0320, USA;2. Department of Mathematics, Colorado State University, 1874 Campus Delivery, Fort Collins, CO 80523-1874, USA;3. Department of Physics, Colorado State University, 1875 Campus Delivery, Fort Collins, CO 80523-1875, USA;2. Department of Radiology, National Cancer Institute of Milan, Italy;3. Department of Radiological and Histopathological Sciences, Section of Diagnostic Imaging, Policlinico Sant’Orsola-Malpighi, Bologna, Italy;4. Department of Surgery, Section of Thoracic Surgery, National Cancer Institute of Milan, Italy;1. Laboratory for Acoustics/ Noise Control, Swiss Federal Laboratories for Materials Science and Technology (EMPA), Überlandstrasse 129, 8600, Dübendorf, Switzerland;2. CNRS, Centrale Lille, ISEN, Univ. Lille, Univ. Valenciennes, UMR 8520 - IEMN, F-59000, Lille, France
Abstract:Imaging properties and negative refraction of the two-dimensional metallic photonic crystal (PC) consisting of a triangular lattice of silver rods immersed in a dielectric is studied. It is found that good-quality image spots and negative refraction with an effective refractive index of ?1 can be achieved for the near-infrared frequency through the adjustment of the metallic PC's lattice constant and the permittivity of the background material together. Drude dispersion model is adopted to describe the silver rod and it is found that the influence of the metal's absorption is trivial to debase the quality of the image spot.
Keywords:
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