What Is Optical Rectenna A rectenna that functions with either visible or infrared light is referred to as an optical rectenna. The transformation of electromagnetic waves into direct current electricity is accomplished using a rectenna, which is a circuit that consists of both an antenna and a diode. An optical rectenna would function in the same manner as a radio or microwave rectenna, but it would convert infrared or visible light into electricity instead of radio waves or microwaves. Rectennas have been in use for a long time. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Optical rectenna Chapter 2: Photodiode Chapter 3: Band gap Chapter 4: Gallium arsenide Chapter 5: Rectenna Chapter 6: Wide-bandgap semiconductor Chapter 7: Indium phosphide Chapter 8: Photodetector Chapter 9: Photovoltaic effect Chapter 10: Thermophotovoltaic Chapter 11: Hybrid solar cell Chapter 12: Third-generation photovoltaic cell Chapter 13: Multi-junction solar cell Chapter 14: Carbon nanotubes in photovoltaics Chapter 15: Organic solar cell Chapter 16: Solid Chapter 17: Shockley-Queisser limit Chapter 18: Transparent conducting film Chapter 19: Plasmonic solar cell Chapter 20: Solar cell research Chapter 21: Sun-free photovoltaics (II) Answering the public top questions about optical rectenna. (III) Real world examples for the usage of optical rectenna in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of optical rectenna' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of optical rectenna.

Rectenna Solar Cells discusses antenna-coupled diode solar cells, an emerging technology that has the potential to provide ultra-high efficiency, low-cost solar energy conversion. This book will provide an overview of solar rectennas, and provide thorough descriptions of the two main components: the diode, and the optical antenna. The editors discuss the science, design, modeling, and manufacturing of the antennas coupled with the diodes. The book will provide concepts to understanding the challenges, fabrication technologies, and materials required to develop rectenna structures. Written by experts in their specialized fields.

This book covers the theory, modeling, and implementation of different RF energy harvesting systems. RF energy harvesting is the best choice among the existing renewable energy sources, in terms of availability, cost, size, and integration with other systems. The device used for harvesting RF energy is called rectenna. A rectenna can work at the microwave, millimeter-wave, and terahertz waves. It also has the capability to operate at optical frequencies to be used for 6G and beyond communication systems. This book covers all aspects of wireless power transfer (WPT)/wireless energy harvesting (WEH), basics, theoretical concepts, and advanced developments occurring in the field of energy harvesting. It also covers the design theory for different types of antenna, rectifier, and impedance matching circuits used in RF energy harvesting systems. Different future and present applications, such as charging of vehicles, smart medical health care, self-driven e-vehicles, self-sustainable home automation system, and wireless drones, have also been discussed in detail.

What Is Nanoradio Carbon nanotubes are the key component of a nanotechnology known as a nanoradio, which functions as both a radio transmitter and receiver. In 2007, researchers working under the direction of Alex Zettl at the University of California, Berkeley were able to effectively send an audio signal using one of the first nanoradios that they created. Because of their diminutive size, nanoradios have the potential to be used in a wide variety of contexts, including as radio transmitters in the circulatory system. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Nanoradio Chapter 2: Microwave Chapter 3: Spectrum Chapter 4: Transmission medium Chapter 5: Transmitter Chapter 6: Radio wave Chapter 7: Very low frequency Chapter 8: Antenna (radio) Chapter 9: Radio propagation Chapter 10: Index of electronics articles Chapter 11: Radio receiver Chapter 12: Resonator Chapter 13: Video modulation Chapter 14: Incoherent scatter Chapter 15: Antenna feed Chapter 16: Radio-frequency engineering Chapter 17: Alex Zettl Chapter 18: Radio Chapter 19: Optical rectenna Chapter 20: Carbon nanotube nanomotor Chapter 21: Graphene antenna (II) Answering the public top questions about nanoradio. (III) Real world examples for the usage of nanoradio in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of nanoradio' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of nanoradio.

What Is Space Based Solar Power The notion of space-based solar power refers to the gathering of solar energy in outer space by solar power satellites (SPS) and the subsequent transmission of that energy to Earth. Outside of the atmosphere, sunlight is able to shine for longer periods of time and is brighter overall. Solar power systems that are stationed in space are able to transform sunlight into another kind of energy that is then able to be sent via the atmosphere to receivers located on the surface of the earth. Those who are looking for answers on a massive scale to problems like anthropogenic climate change or the depletion of fossil fuels may find it appealing. How You Will Benefit (I) Insights, and validations about the following topics: Chapter 1: Space-based solar power Chapter 2: Spacecraft propulsion Chapter 3: Space colonization Chapter 4: Solar sail Chapter 5: Beam-powered propulsion Chapter 6: Starwisp Chapter 7: Lightcraft Chapter 8: Rectenna Chapter 9: Laser propulsion Chapter 10: Wireless power transfer Chapter 11: Chang'e 1 Chapter 12: Lunar space elevator Chapter 13: Project Echo Chapter 14: NASA Institute for Advanced Concepts Chapter 15: Lunar habitation Chapter 16: Thinned-array curse Chapter 17: LADEE Chapter 18: Stationary High Altitude Relay Platform Chapter 19: Thermal rocket Chapter 20: Lunar Flashlight Chapter 21: Queqiao relay satellite (II) Answering the public top questions about space based solar power. (III) Real world examples for the usage of space based solar power in many fields. (IV) 17 appendices to explain, briefly, 266 emerging technologies in each industry to have 360-degree full understanding of space based solar power' technologies. Who This Book Is For Professionals, undergraduate and graduate students, enthusiasts, hobbyists, and those who want to go beyond basic knowledge or information for any kind of space based solar power.

Photovoltaic systems enable the sun’s energy to be converted directly into electricity using semiconductor solar cells. The ultimate goal of photovoltaic research and development is to reduce the cost of solar power to reach or even become lower than the cost of electricity generated from fossil and nuclear fuels. The power conversion efficiency and the cost per unit area of the phototvoltaic system are critical factors that determine the cost of photovoltaic electricity. Until recently, the power conversion efficiency of single-junction photovoltaic cells has been limited to approximately 33% - the so-called Shockley-Queisser limit. This book presents the latest developments in photovoltaics which seek to either reach or surpass the Shockley-Queisser limit, and to lower the cell cost per unit area. Progress toward this ultimate goal is presented for the three generations of photovoltaic cells: the 1st generation based on crystalline silicon semiconductors; the 2nd generation based on thin film silicon, compound semiconductors, amorphous silicon, and various mesoscopic structures; and the 3rd generation based on the unique properties of nanoscale materials, new inorganic and organic photoconversion materials, highly efficient multi-junction cells with low cost solar concentration, and novel photovoltaic processes. The extent to which photovoltaic materials and processes can meet the expectations of efficient and cost effective solar energy conversion to electricity is discussed. Written by an international team of expert contributors, and with researchers in academia, national research laboratories, and industry in mind, this book is a comprehensive guide to recent progress in photovoltaics and essential for any library or laboratory in the field.

The linear and nonlinear resonance behaviour of optical antennas (metallic nanostructures showing resonance behaviour at optical frequencies) made of gold and aluminum using electron-beam lithography is investigated. Specifically, it is of interest how the emission behaviour is changed by the coupling of two antenna arms via a small gap. Experimental techniques applied include dark-field spectroscopy and two-photon luminescence.