Development Of Heterogeneous And Hybrid Opal Based 3 Dimensional Photonic Crystals For Extended Light Moulding And Trapping
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Development Of Heterogeneous And Hybrid Opal Based 3 Dimensional Photonic Crystals For Extended Light Moulding And Trapping
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Author : Boyang Ding
language : en
Publisher:
Release Date : 2010
Development Of Heterogeneous And Hybrid Opal Based 3 Dimensional Photonic Crystals For Extended Light Moulding And Trapping written by Boyang Ding and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Photons categories.
Photonic crystals are artificially engineered structures designed to prohibit light propagation in pre-defined spectral intervals called photonic bandgaps by creating regular distribution of the dielectric constant in one, two, or three dimensions, with a period of the order of the pertinent light wavelength. Among many techniques used for preparation of 3-dimensional photonic crystals, colloidal crystallization is arguably the simplest method allowing the fabrication of well-ordered large-scale lattices from colloidal nano-particles. The aim of this project is to extend functionalities of 3-dimensional colloidal photonic crystals for moulding and trapping light by introducing hetero-interfaces and transforming the crystal surface in order to control the in- and out-coupling of the light in the photonic crystal. Specifically, the main accomplishments are: i), the design, fabrication and characterization of novel metal-dielectric hybrid photonic crystals, the metal surface of which supports the Surface Plasmon Polaritons in the spectral range overlapping the photonic bandgap structure. This approach has brought the uniquely broad optical functionality of hybrid nanoarchitectures that rely on synergy of three independently tuneable resonance phenomena, namely, the photonic band gap, the extraordinary transmission and the microcavity resonance in contrast to solely diffraction in parent photonic crystals. ii), the design and fabrication of heterogeneous photonic crystals by integrating the self- and force-assembled (Langmuir Blodgett technique) colloidal crystals of different topologies. The mismatch of the light modes in such hetero-crystals results in the controllable light scattering and guiding at the hetero-interface. The broadband and omnidirectional light trapping was achieved by adding a metal layer at the hetero-interface. Such interface light trapping is a new prospective approach to photon management for the next generation of photovoltaic cells and superbright light sources.
Nanomaterials And Nanoarchitectures
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Author : M. Bardosova
language : en
Publisher: Springer
Release Date : 2015-08-31
Nanomaterials And Nanoarchitectures written by M. Bardosova and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-31 with Science categories.
The current work consists of nine contributions describing recent progress in the interdisciplinary of Nanoscience, which involves physics, chemistry, engineering, biology and medicine and one essay outlining some important historical and socioeconomic factors pertaining to recent developments in nanoscale science and technology. All 10 chapters have been written by eminent experts in their respective fields. The authors employ the terms ‘nanomaterials’ as building blocks of a range of materials, ‘nanoarchitecture’ represents the design and ‘nanotechnology’ the means to produce a particular device or functionality. Two of the chapters are devoted to novel materials and two others focus on analyzing techniques, which can be used to enable molecular control of the film architecture. Additionally, the reader will find material devoted to photonic and hybrid plasmonic-photonic crystals as well as sections which address their applications, such as the use of plasmonic particles and nanostructures for new sensing concepts and ultrasensitive detection techniques. This work will be of interest to graduate students, researchers and practitioners alike.
Photonic Crystals
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Author : Kurt Busch
language : en
Publisher: John Wiley & Sons
Release Date : 2006-05-12
Photonic Crystals written by Kurt Busch and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-05-12 with Science categories.
The majority of the contributions in this topically edited book stems from the priority program SPP 1113 "Photonische Kristalle" run by the Deutsche Forschungsgemeinschaft (DFG), resulting in a survey of the current state of photonic crystal research in Germany. The first part of the book describes methods for the theoretical analysis of their optical properties as well as the results. The main part is dedicated to the fabrication, characterization and modeling of two- and three-dimensional photonic crystals, while the final section presents a wide spectrum of applications: gas sensors, micro-lasers, and photonic crystal fibers. Illustrated in full color, this book is not only of interest to advanced students and researchers in physics, electrical engineering, and material science, but also to company R&D departments involved in photonic crystal-related technological developments.
Photonic Crystals
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Author : Pankaj Kumar Choudhury
language : en
Publisher: BoD – Books on Demand
Release Date : 2019-10-09
Photonic Crystals written by Pankaj Kumar Choudhury and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-09 with Technology & Engineering categories.
The role of dielectric mirrors is very important in optics. These are used for several purposes like imaging, fabricating laser cavities, and so on. The basis for the propagation of photons in dielectric mediums is the same as electrons in solid crystals. If the electrons can be diffracted by a periodic potential well, photons could also be equally well diffracted by a periodic modulation of the refractive index of the medium. This idea led to the development of many new artificial photonic materials and optical micro- and nanostructures. Since the mechanism of light guidance is essentially due to the microstructural features of the medium, a wide variety of photonic structures, e.g., photonic band-gap fibers in 1D and photonic band-gap crystals in 2D and 3D, can be realized. Photonic Crystals - A Glimpse of the Current Research Trends essentially highlights the recent developments in the arena of photonic crystal research. It is expected to be useful for expert as well as novice researchers; the former group of readers would be abreast of recent research advancements, whereas the latter group would benefit from grasping knowledge delivered by expert scientists.
Theoretical Foundations And Application Of Photonic Crystals
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Author : Alexander Vakhrushev
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-04-04
Theoretical Foundations And Application Of Photonic Crystals written by Alexander Vakhrushev and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-04 with Technology & Engineering categories.
This book is devoted to the description of research and design of photonic crystals. Topics included in the book cover a wide range of research in the field of theoretical analysis and experimental investigation: the electromagnetic field in the photonic crystal, propagation of waves in the gyrotropic magnetophotonic crystals, low one-photon absorption, ultratransparent photonic crystals, colloidal assembly, photonic crystal application for development of all-optical computational system, design strategies for PC devices, self-organization of liquid crystalline nanostructures, and optical diodes. This book will be useful for engineers, technologists, researchers, and postgraduate students interested in the research, design, fabrication processes, and applications of photonic crystals.
Photonic Crystals Theory Applications And Fabrication
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Author : Dennis W Prather
language : en
Publisher: John Wiley & Sons
Release Date : 2009-05-26
Photonic Crystals Theory Applications And Fabrication written by Dennis W Prather and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-05-26 with Technology & Engineering categories.
The Only Source You Need for Understanding the Design and Applications of Photonic Crystal-Based Devices This book presents in detail the fundamental theoretical background necessary to understand the unique optical phenomena arising from the crystalline nature of photonic-crystal structures and their application across a range of disciplines. Organized to take readers from basic concepts to more advanced topics, the book covers: Preliminary concepts of electromagnetic waves and periodic media Numerical methods for analyzing photonic-crystal structures Devices and applications based on photonic bandgaps Engineering photonic-crystal dispersion properties Fabrication of two- and three-dimensional photonic crystals The authors assume an elementary knowledge of electromagnetism, vector calculus, Fourier analysis, and complex number analysis. Therefore, the book is appropriate for advanced undergraduate students in physics, applied physics, optics, electronics, and chemical and electrical engineering, as well as graduate students and researchers in these fields.
Fabrication Of Opal Based Photonic Crystals Using Atomic Layer Deposition
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Author : Jeffrey Stapleton King
language : en
Publisher:
Release Date : 2004
Fabrication Of Opal Based Photonic Crystals Using Atomic Layer Deposition written by Jeffrey Stapleton King and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Crystal optics categories.
The past decade and a half has seen the rapid emergence of a new material class known as photonic crystals (PCs), structures that exhibit 1, 2, or 3, dimensional periodicity of their dielectric constant, resulting in a modification of the dispersion characteristics from the normal w = vk relationship found in isotropic materials. Several remarkable electromagnetic phenomenon result, including the formation of photonic band gaps (PBGs), which are specific energy ranges where electromagnetic wave propagation is forbidden, and the existence of energies where the photon group velocity is slowed drastically from its normal value. The resulting modification of a material?s?photonic band structure? allows unprecedented control of light, resulting in phenomena such as self-collimation, and spontaneous emission modification or lasing threshold reduction through either band edge effects (low group velocity) or microcavity defect incorporation. PCs for operation at visible wavelengths are difficult to form due to the need for nanoscale fabrication techniques. The research described focused on the fabrication of photonic crystal phosphors by using the infiltration and subsequent removal of self-assembled opal templates to make inverted opal-based photonic crystals. This thesis shows the advantages that atomic layer deposition (ALD) has as an important method for use in photonic crystal fabrication, and highlights the exciting results of use of ALD to fabricate luminescent ZnS:Mn and optically inactive titania inverse opals, as well as ZnS:Mn/titania luminescent composite inverse opals.
Photonic Crystals For Optofluidic Transport Trapping And Biosensing
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Author : Sudeep Mandal
language : en
Publisher:
Release Date : 2010
Photonic Crystals For Optofluidic Transport Trapping And Biosensing written by Sudeep Mandal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Photonic crystals, since their discovery in 1987 have been of great interest to the optics community. Their unique optical properties have revolutionized the field of photonics and have enabled a new class of optical devices with applications in a broad range of areas such as creating nanophotonic light guiding circuits, efficient optical add-drop filters and modulators as well as a new class of low loss optical fibers. This thesis work aims to exploit the optical properties of photonic crystals that enable them to strongly confine and guide light towards developing and designing novel optical devices for performing optofluidic transport, trapping and biosensing. While optical biosensors are of great interest to the biosensing community, one of the limitations of current optical nanobiosensors is their inability to perform a large number of detections in parallel. I have demonstrated a novel one-dimensional resonant photonic crystal architecture that is extremely well suited for performing highly sensitive and multiplexed, label-free biological detections. These sensors also have very a small form-factor allowing for the successful detection of tens of attograms of bound mass on the sensor surface. Over the last two decades, optical tweezers have been developed to exert optical forces for trapping and manipulating microparticles and cells. However, they exhibit two significant drawbacks. Firstly, they have a very small interaction length over which they can exert optical forces on particles thus limiting the distances over which particles can be propelled using optical scattering forces. Additionally, they are diffraction limited systems which make them incapable of trapping smaller objects such as dielectric nanoparticles and biomolecules. In my doctoral work, I have demonstrated for the first time, the ability to exploit liquid-core waveguiding structures to propel dielectric microspheres over long distances due to their ability to strongly confine and guide light thus overcoming the limitation of previous systems with respect to their small interaction lengths. I have also demonstrated a resonant photonic crystal architecture that overcomes the limitations imposed by diffraction by confining the optical field to sub-wavelength volumes while simultaneously amplifying it. This has enabled the trapping of nanoparticles as small as 48-nm (in diameter) and trap stiffnesses that are an order of magnitude higher than the current state-of-the-art. The results of this work will enable future devices with the ability to potentially trap and sense single biomolecules such as proteins. In addition, by integrating these photonic crystal elements with other photonic circuit elements, it opens up a vast number of exciting possibilities for optofluidically enabled transport in micro and nano-fluidic systems. In particular, my doctoral research lays down the groundwork for enabling future work on sensitive size based optical chromatography and ultra-sensitive biosensors.
Fabrication Of Two Dimensional And Three Dimensional Photonic Crystal Devices For Applications In Chip Scale Optical Interconnects
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Author :
language : en
Publisher:
Release Date : 2006
Fabrication Of Two Dimensional And Three Dimensional Photonic Crystal Devices For Applications In Chip Scale Optical Interconnects written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Optical interconnects categories.
To date, the realization of chip-scale optical interconnects has been inhibited by the lack of a device technology that can provide optical functionality at a scale commensurate with integrated circuits. To overcome this limitation, I propose the realization of an "optical superhighway" as an alternative interconnect paradigm for next-generation integrated circuits using semiconductor-based photonic-crystal (PhC) devices. PhCs have the potential to be the elementary building blocks of the next generation of opto-electronic devices and integrated circuits. This potential has invigorated global research interest in hybrid optical-electrical interconnects at the chip scale. In this thesis, I will present the development of such Nano-Photonic Crystal (PhC) interconnects using conventional CMOS fabrication technology, thereby enabling photonic functionality on the VLSI scale. Accordingly, I will discuss the fabrication of high fill-factor planar PhC devices on silicon-on-insulator substrates, using both capacitively coupled and inductively coupled plasma etching. Functional, sub-100-nm, high-aspect-ratio PhC devices will be presented, along with the technical challenges encountered in their realization. Also, a robust etch-process toolbox has been developed that, in addition to realizing chip-scale optical interconnects, also paves the way for applications in other technology niches like MEMS, terahertz devices, nanophotonics and microfluidics, to be realized in a single silicon platform, thus enabling systems-on-a-chip. In-plane optical routing in ultra-thin silicon-on-sapphire is also explored as part of this investigation. In addition, I will discuss the development of a sub-surface silicon optical bus (S3B), a buried silicon optical interconnect technology. The approach relies on engineering the dispersion properties of three-dimensional (3D) photonic crystals embedded in silicon to control light propagation. In particular, a novel method of fabricating buried 3D photonic-crystal structures using conventional planar silicon micromachining will be presented. This method utilizes a single planar etch mask and time-multiplexed etch process along with sidewall oxidation to create an array of spherical voids with three-dimensional symmetry. Preliminary results will be presented to support the feasibility of realizing chip-scale optical interconnects using the proposed approach. The results of this research will not only help realize a new generation of optical integrated circuits, but also provide a solution to the global interconnect delay anticipated in next-generation of high-end integrated circuits. These PhC devices could very well provide the building blocks for the integrated circuits of the future.
Compound Semiconductor Photonics
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Author : Chua Soo-Jin
language : en
Publisher: CRC Press
Release Date : 2020-03-26
Compound Semiconductor Photonics written by Chua Soo-Jin and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-26 with Science categories.
This proceeding is a collection of selected papers presented at Symposium O of Compound Semiconductor Photonics in the International Conference on Materials for Advanced Technology (ICMAT), which was held in Singapore from 28 June to 3 July 2009. The symposium covers a wide range of topics from fundamental semiconductor materials study to photonic device fabrication and application. The papers collected are of recent progress in the active and wide range of semiconductor photonics research. They include materials-related papers on III-As/P, III-nitride, quantum dot/wire/dash growth, ZnO, and chalcogenide, and devices-related papers on photonic crystals, VCSEL, quantum dot/dash lasers, LEDs, waveguides, solar cells and heterogeneous integrat