Information Metamaterials

The subject of this book is the fast-developing area of research known as metamaterials/metasurfaces and some of their engineering applications. This book comprehensively presents the state of the art of metamaterials/metasurfaces from theory to applications. The theoretical side includes electrodynamics of left-handed medium, generalized Snell's law, digital coding metamaterials/metasurfaces, group theory of metamaterials, information metamaterials and metasurfaces, etc. On the application side, a wide range of design examples are discussed, including metamaterial antennas, electromagnetic interference, frequency selective surfaces, wireless power transmission and energy harvesting, cloaking and radar cross section reduction, orbital angular momentum, wireless communication, imaging, etc. The book provides researchers, engineers, and graduate students with a variety of new discoveries, results, information, and knowledge in the field of metamaterials and metasurfaces.

Metamaterials have attracted enormous interests from both physics and engineering communities in the past 20 years, owing to their powerful ability in manipulating electromagnetic waves. However, the functionalities of traditional metamaterials are fixed at the time of fabrication. To control the EM waves dynamically, active components are introduced to the meta-atoms, yielding active metamaterials. Recently, a special kind of active metamaterials, digital coding and programmable metamaterials, are proposed, which can achieve dynamically controllable functionalities using field programmable gate array (FPGA). Most importantly, the digital coding representations of metamaterials set up a bridge between the digital world and physical world, and allow metamaterials to process digital information directly, leading to information metamaterials. In this Element, we review the evolution of information metamaterials, mainly focusing on their basic concepts, design principles, fabrication techniques, experimental measurement and potential applications. Future developments of information metamaterials are also envisioned.

Emerging from electromagnetic waves and fast extending to acoustic and elastic waves, metamaterials that exhibit extraordinary wave control abilities have been gaining soaring attention. Over the past two decades, elastic metamaterials with engineered microstructures have provided a variety of appealing solutions for controlling elastic waves and vibrations. By tailoring their internal microstructures at a subwavelength scale, elastic metamaterials fruitfully distinct themselves from traditional materials or phononic crystals by their striking functions in wave trajectory manipulation, cloaking, nonreciprocal and topological wave control, as well as low-frequency wave/vibration mitigation and absorption.

Vat Photopolymerization 3D Printing: Processes, Materials, and Applications focuses on the cutting-edge vat polymerization additive manufacturing technology, as well as its associated materials and potential applications. The book is divided into four parts, with the first providing some foundational concepts about the technology as well as providing background on the different vat photopolymerization techniques, such as grayscale, volumetric, multiwavelength, two-photon and more. The basic chemistry involved in the vat photopolymerization process is covered here as well. Section 2 discusses vat photopolymerization 3D printing of functional materials, including plastics, hydrogels, stimuli-responsive polymers, ceramics, and more. Section 3 covers various applications of the materials created, and the book concludes with a section looking at the future direction of vat photopolymerization 3D printing. Provides a detailed introduction to the technology, materials, and applications of vat photopolymerization additive manufacturing (AM) Discusses the basic chemistry in the vat photopolymerization process, including chemical reactions, ink components, functional additives, inhibitors, and more Covers techniques for creating plastics, hydrogels, shape memory polymers, ceramics, and more Details applications in bioengineering, engineering, metamaterials, and bio-inspired structures and functions

This Element introduces the exotic wave phenomena arising from the extremely small optical refractive index, and sheds light on the underlying mechanisms, with a primary focus on the basic concepts and fundamental wave physics. The authors reveal the exciting applications of ENZ metamaterials, which have profound impacts over a wide range of fields of science and technology. The sections are organized as follows: in Section 2, the authors demonstrate the extraordinary wave properties in ENZ metamaterials, analyzing the unique wave dynamics and the resulting effects. Section 3 is dedicated to introducing various realization methods of the ENZ metamaterials with periodic and non-periodic styles. The applications of ENZ metamaterials are discussed in Sections 4 and 5, from the perspectives of microwave engineering, optics, and quantum physics. The authors close in Section 6 by presenting an outlook on the development of ENZ metamaterials and discussing the key challenges addressed in future works.

Collection of selected, peer reviewed papers from the 2014 International Conference on Mechatronics Engineering and Computing Technology (ICMECT 2014), April 9-10, 2014, Shanghai, China. Volume is indexed by Thomson Reuters CPCI-S (WoS). The 1531 papers are grouped as follows: Chapter 1: Materials Science and Materials Processing Technologies, Chapter 2: Building, Construction and Environmental Research, Chapter 3: Researches in Applied Mechanics and Mechanical Engineering, Chapter 4: Power and Electric Research, Electronics and Microelectronics, Embedded and Integrated Systems, Chapter 5: Mechatronics, Automation and Control, Chapter 6: Measurement and Instrumentation, Monitoring, Testing, Detection and Identification Technologies, Chapter 7: Computation Methods and Algorithms for Modeling, Simulation and Optimization, Data Mining and Data Processing, Chapter 8: Communication, Signal and Image Processing, Chapter 9: Information Technologies, WEB and Networks Engineering, Information Security and Software Application, Chapter 10: Modern Tendency in Area of Management, Logistics, Economics, Education, Traffic and Urban Engineering

Metamaterials—artificially structured materials with engineered electromagnetic properties—have enabled unprecedented flexibility in manipulating electromagnetic waves and producing new functionalities. This book details recent advances in the study of optical metamaterials, ranging from fundamental aspects to up-to-date implementations, in one unified treatment. Important recent developments and applications such as superlens and cloaking devices are also treated in detail and made understandable. The planned monograph can serve as a very timely book for both newcomers and advanced researchers in this extremely rapid evolving field.