Negative refraction in metamaterials

• Main Author: Qin, Yuejing
• Other Authors: Luo Yu
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2020
• Subjects: Engineering::Electrical and electronic engineering
• Online Access: https://hdl.handle.net/10356/141636
• Institution: Nanyang Technological University

The project discusses the means of achieving negative refraction through the implementation of two artificial structues. One is the hyperbolic architecture with InSb and Al2O3 (InSb-Al2O3). such metamaterials can simplify fabrication and broaden effective bandwidth compared with the materials that are already known. Upon the calculation of frequency region in MATLAB, subsequent COMSOL simulations confirmed that negative refraction could be realized in the Terahertz (THz) frequency range for the HMM structure. Another is the all-dielectric material with nanostructure, which can further decline more energy dissipation than previous materials. By being figured out in MATHEMATICA, negative refraction can also be realized in a short frequency region in the all-dielectric structure.