Homogenization and Parameter Retrieval

This chapter describes the metamaterials based on periodic structures inhabiting theoretically a distinctive place among effective media and photonic crystals. The S-parameter retrieval procedures that have been exploited recently to describe metamaterials have been made known to be effective for metamaterials having asymmetric unit cells. The single unit cell of a conventional symmetric (in the propagation direction) metamaterial arrangement is illustrated, and it produces negative permittivity and permeability.

Introduction

This chapter summarizes the key works within the field of metamaterials in the past and present, explains some of the important simulation and fabrication procedures used in the field, and concisely analyzes the physical mechanisms that contribute to metamaterial performance at infrared and visible frequencies. This is done to frame the context of the book within the field as a whole.

Design and Simulations of Negative Refractive Index Metamaterial (NIR) SRR and CSRR Structures

This chapter evaluates the simulation studies performed on resonator-based structures to figure out the characteristics of metamaterial arrangement while incident the light horizontally. A double negative material is shown by the proposed structure as light hits along x-axis. Furthermore, it is noticed that different parameters of the structures effect the behavior of the left-handed metamaterial. Moreover, it is also noticed that changing the lattice constant ax and ay also affects the behavior of the left-handed metamaterial.

Study on PIT Phenomenon in Metal Micro-Nanostructures

This chapter presents the coupled harmonic oscillator model in bright-bright mode coupling system by utilizing the boundary conditions of electromagnetic field combined with the microscopic behavior of electrons in metal. According to the model, the scattering parameters can be easily derived for a thin system. It can be then used to analyze the other physical parameters in the system, such as the dielectric constant, coupling strength, and so on. The correctness of the model is verified by using a simple planar structure composed of the two paralleled and staggered metal nanorods in each unit cell. The results show that physical parameters of the system can be concluded very well from the model. This indicates that the model is effective and convenient for describing bright-bright mode coupling. Then, physical regime behind the PIT and slow light effect is revealed in a system based on the model.

Fundamentals of Metamaterials

This chapter describes the fundamentals of left-handed metamaterials. From Maxwell's equations, constant phase term is originated, and it is revealed that its negative value is chosen in a negative permittivity and negative permeability (DNG) medium whereas its positive value is designated in a DPS medium. The negative phase constant results in a negative phase velocity and negative index of refraction in the medium. Complementary split ring resonator (CSRR) as a valuable metamaterial component is illustrated. The resonant frequencies of the CSRR are associated with the features of their arrangements. CSRR is agitated with the E field of the electric and magnetic wave together with the axis of the CSRR. Consequently, the CSRR presents negative permittivity in a particular frequency band.

Plasmonics and Metamaterials

In this chapter, the plasmonic and metamaterials are explained in detail. It compares the natural metamaterial with the metamaterial and illustrates the history of metamaterials, surface Plasmon, diffraction limit, magnetic metamaterials, design of metamaterials, and split ring resonators.