Download or read book Plasmonic Nanoparticles in the Quantum Size Regime written by Jonathan Andrew Scholl and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology development has been majorly driven by the dramatic alteration and emergence of new material properties as dimensions are decreased. In recent years, noble metal nanoparticles have attracted substantial interest owing to their ability to manipulate light on the nanoscale through localized surface plasmon resonances (LSPRs). These collective oscillations of conduction band electrons result in strong optical absorption and scattering in subwavelength structures and enable applications including molecular detection, cancer treatment, and tunable nanoantennas. While the plasmonic properties of individual particles with diameters> 10 nm and multiparticle systems with gap sizes> 1 nm have been experimentally characterized and well-described with classical electrodynamic theory, LSPRs in smaller nanostructures have historically been poorly understood. Experimental observations below these dimensional thresholds have been limited by optical detection and fabrication techniques, precluding analysis of a size regime with the potential for ultrasensitive monitoring and catalysis. This dissertation describes newly-developed approaches to probe plasmonic nanoparticle systems as their dimensions enter the quantum size regime. Our approach relies on scanning transmission electron microscopy (STEM) and electron energy-loss spectroscopy (EELS), which allow high-resolution correlation of plasmonic nanoparticle structure with spectra. First, we explore individual metallic nanoparticles with diameters ranging from 20 nm down to 2 nm. As the particles transition from a classical to a quantum-influenced regime, they reveal substantial resonance shifts that deviate from classical electrodynamic predictions. An analytical quantum mechanical model is developed to explain this divergence as function of altered particle permittivity, accounting for the discretization of energy states as particle diameter decreases. Next, resonantly-coupled multiparticle systems including dimers and trimers are discussed. Using a novel electron beam manipulation technique, the separation distance between adjacent particles can be reduced to Angstrom scales. Experimental EELS analysis of dimers reveals non-classical spectral trends and that closely correlate with state-of-the-art quantum models incorporating electron tunneling. Trimers are additionally found to support a greater variety of resonant modes through selective electron beam excitation, and demonstrate both classical and non-classical spectral evolution at sub-nanometer gaps. The study of these quantum-influenced single and multiparticle systems will inform the design of future ultrafine plasmonic sensors, as well as support new interdisciplinary exploration bridging molecular electronics, nonlinear optics, and plasmonics.
Download or read book Quantum Plasmonics written by Sergey I. Bozhevolnyi and published by Springer. This book was released on 2016-11-26 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest results of quantum properties of light in the nanostructured environment supporting surface plasmons, including waveguide quantum electrodynamics, quantum emitters, strong-coupling phenomena and lasing in plasmonic structures. Different approaches are described for controlling the emission and propagation of light with extreme light confinement and field enhancement provided by surface plasmons. Recent progress is reviewed in both experimental and theoretical investigations within quantum plasmonics, elucidating the fundamental physical phenomena involved and discussing the realization of quantum-controlled devices, including single-photon sources, transistors and ultra-compact circuitry at the nanoscale.
Download or read book From Classical to Quantum Plasmonics in Three and Two Dimensions written by Thomas Christensen and published by Springer. This book was released on 2017-01-11 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides a comprehensive introduction to two active research directions within the field of plasmonics: (i) nonclassical, or quantum, aspects of the plasmonic response; and (ii) two-dimensional plasmonics, a recent innovation in the field stimulated by the advent of two-dimensional materials. It discusses the fundamentals of this field in detail, and explores several current research directions. Nonclassical plasmonics has been spurred on in recent years by the tremendous technological progress in nanofabrication and optical characterization; today, it is possible to investigate the plasmonic features of nanostructures with characteristic features in the few nanometer range. The book describes and analyzes the breakdown of the classical theory under these conditions and explores several alternatives and extensions. The unique electronic and dimensional features of novel two-dimensional materials, such as graphene, lie at the core of plasmonics' most rapidly developing subfield; two-dimensional plasmonics. This thesis provides a clear and comprehensive exposition of the central features for interested researchers looking for an entry point to this riveting area.
Download or read book Plasmonic Interactions in the Quantum Tunnelling Regime written by Kevin John Savage and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Driven by exciting new research and applications, top-down and bottom-up fabrication techniques are producing ever more intricate, reproducible, plasmonic nano-architectures with gaps and junctions approaching the single nanometre and atomic scales. Such atomic-sized features promote the intersection of physics, chemistry and biology in plasmonics. Consequently, understanding light-matter interactions in such closely spaced, electromagnetically coupled, metallic nanosystems is of vital importance to a tremendous variety of current and future nanophotonic technologies. This thesis describes the first dynamically controlled, optically broadband, experimental investigations of light-driven plasmonic coupling between two metal nanostructures with sub-nanometre separation. A new experimental apparatus and nanosystem alignment technique was developed to enable the required sub-nanometre inter-nanoparticle geometry to be created and probed. Two conducting atomic force microscopy tips with nanoparticle functionalised apices are brought into nanoscale `tip-to-tip' axial alignment with dynamically-controlled spacing and ultra-wide optical access. Resonant electrical parametric mixing, created by oscillating the electromechanically coupled tips, is utilised to extract an electronic signal due to nanoscale changes in inter-tip position. Experimental results match theory confirming the viability of the technique. By functionalising the tip apices, this unique multi-functional observation platform allows the plasmonic response of nanoparticle dimers with sub-nanometre separations to be characterised. By simultaneously capturing both the electrical and optical properties of tip-mounted gold nanoparticles with controllable sub-nanometre separation, the first evidence for the quantum regime of optically driven tunnelling plasmonics is revealed in unprecedented detail. It is demonstrated that quantum mechanical effects are critically important at approximately the 0.3 nm scale where spatially non-local tunnelling plasmonics controls the optical response. All observed phenomena are in good agreement with a recently developed quantum-corrected model of plasmonic systems. The findings imply that tunnelling establishes a quantum limit for plasmonic field enhancement and confinement. Additionally, the work suggests the highly enhanced local density of photonic states in nanoscale cavities could enable coherent plasmon-exciton coupling. This thesis prompts new experimental and theoretical investigations into quantum-domain plasmonic systems, and impacts the future of nanoplasmonic device engineering, nanoscale photochemistry and plasmon-mediated electron tunnelling.
Download or read book Collective Plasmon Modes in Gain Media written by V.A.G. Rivera and published by Springer. This book was released on 2014-09-03 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first detailed description, including both theoretical aspects and experimental methods, of the interaction of rare-earth ions with surface plasmon polariton from the point of view of collective plasmon-photon interactions via resonance modes (metal nanoparticles or nanostructure arrays) with quantum emitters (rare-earth ions). These interactions are of particular interest for applications to optical telecommunications, optical displays, and laser solid state technologies. Thus, our main goal is to give a more precise overview of the rapidly emerging field of nanophotonics by means of the study of the quantum properties of light interaction with matter at the nanoscale. In this way, collective plasmon-modes in a gain medium result from the interaction/coupling between a quantum emitter (created by rare-earth ions) with a metallic surface, inducing different effects such as the polarization of the metal electrons (so-called surface plasmon polariton - SPP), a field enhancement sustained by resonance coupling, or transfer of energy due to non-resonant coupling between the metallic nanostructure and the optically active surrounding medium. These effects counteract the absorption losses in the metal to enhance luminescence properties or even to control the polarization and phase of quantum emitters. The engineering of plasmons/SPP in gain media constitutes a new field in nanophotonics science with a tremendous technological potential in integrated optics/photonics at the nanoscale based on the control of quantum effects. This book will be an essential tool for scientists, engineers, and graduate and undergraduate students interested not only in a new frontier of fundamental physics, but also in the realization of nanophotonic devices for optical telecommunication.
Download or read book Optical Response of Nanostructures written by Kikuo Cho and published by Springer Science & Business Media. This book was released on 2003-04-23 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a theoretical description of linear and nonlinear optical responses of matter with special emphasis on the microscopic and ‘nonlocal’ nature of resonant response. It will have a tremendous influence on modern device techniques, as it deals with frontier research in response theory.
Download or read book Plasmonics and its Applications written by Grégory Barbillon and published by MDPI. This book was released on 2019-06-05 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmonics is a rapidly developing field that combines fundamental research and applications ranging from areas such as physics to engineering, chemistry, biology, medicine, food sciences, and the environmental sciences. Plasmonics appeared in the 1950s with the discovery of surface plasmon polaritons. Plasmonics then went through a novel propulsion in the mid-1970s, when surface-enhanced Raman scattering was discovered. Nevertheless, it is in this last decade that a very significant explosion of plasmonics and its applications has occurred. Thus, this book provides a snapshot of the current advances in these various areas of plasmonics and its applications, such as engineering, sensing, surface-enhanced fluorescence, catalysis, and photovoltaic devices.
Download or read book Modern Plasmonics written by Alexei A. Maradudin and published by Elsevier. This book was released on 2014-09-10 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmonics is entering the curriculum of many universities, either as a stand alone subject, or as part of some course or courses. Nanotechnology institutes have been, and are being, established in universities, in which plasmonics is a significant topic of research. Modern Plasmonics offers a comprehensive presentation of the properties of surface plasmon polaritons, in systems of different structures and various natures, e.g. active, nonlinear, graded, theoretical/computational and experimental techniques for studying them, and their use in a variety of applications. Contains material not found in existing books on plasmonics, including basic properties of these surface waves, theoretical/computational and experimental approaches, and new applications of them Each chapter is written by an expert in the subject to which it is devoted Emphasis on applications of plasmonics that have been realized, not just predicted or proposed
Download or read book Quantum Nano Plasmonics written by Witold A. Jacak and published by Cambridge University Press. This book was released on 2020-09-03 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: With examples throughout, this step-by-step approach makes quantum theory of plasmons accessible to readers without specialized training in theory.
Download or read book Colloidal Synthesis of Plasmonic Nanometals written by Luis Liz-Marzán and published by CRC Press. This book was released on 2020-04-23 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noble metal nanoparticles have attracted enormous scientific and technological interest because of their unique optical properties, which are related to surface plasmon resonances. The interest in nanosized metal particles dates back to ancient societies, when metals were used in various forms as decorative elements. From the famous Lycurgus cup, made by the Romans in the 4th century AD, through thousands of stained glasses in churches and cathedrals all over medieval Europe, bright-yellow, green, or red colors have been obtained by a touch of metallic additions during glass blowing. This peculiar interaction of light with nanometals can be widely tuned through the morphology and assembly of nanoparticles, thereby expanding the range of potential applications, from energy and information storage to biomedicine, including novel diagnostic and therapeutic methods. This book compiles recent developments that clearly illustrate the state of the art in this cutting-edge research field. It comprises different review articles written by the teams of Prof. Luis Liz-Marzán, an international leader in chemical nanotechnology who has made seminal contributions to the use of colloid chemistry methods to understand and tailor the growth of metal particles at the nanoscale. Apart from synthesis, the book also describes in detail the plasmonic properties of nanomaterials and illustrates some representative applications. This book will appeal to anyone involved in nanotechnology, nanocrystal growth, nanoplasmonics, and surface-enhanced spectroscopies.
Download or read book Hybrid Quantum Systems written by Yoshiro Hirayama and published by Springer Nature. This book was released on 2022-01-06 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents state-of-the-art research on quantum hybridization, manipulation, and measurement in the context of hybrid quantum systems. It covers a broad range of experimental and theoretical topics relevant to quantum hybridization, manipulation, and measurement technologies, including a magnetic field sensor based on spin qubits in diamond NV centers, coherently coupled superconductor qubits, novel coherent couplings between electron and nuclear spin, photons and phonons, and coherent coupling of atoms and photons. Each topic is concisely described by an expert at the forefront of the field, helping readers quickly catch up on the latest advances in fundamental sciences and technologies of hybrid quantum systems, while also providing an essential overview.
Download or read book Molecules in Superfluid Helium Nanodroplets written by Alkwin Slenczka and published by Springer Nature. This book was released on 2022-05-28 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book covers recent advances in experiments using the ultra-cold, very weakly perturbing superfluid environment provided by helium nanodroplets for high resolution spectroscopic, structural and dynamic studies of molecules and synthetic clusters. The recent infra-red, UV-Vis studies of radicals, molecules, clusters, ions and biomolecules, as well as laser dynamical and laser orientational studies, are reviewed. The Coulomb explosion studies of the uniquely quantum structures of small helium clusters, X-ray imaging of large droplets and electron diffraction of embedded molecules are also described. Particular emphasis is given to the synthesis and detection of new species by mass spectrometry and deposition electron microscopy.
Download or read book Quantum Nano Plasmonics written by Witold A. Jacak and published by Cambridge University Press. This book was released on 2020-09-03 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: With examples and clear explanation throughout, this step-by-step approach makes quantum theory of plasmons accessible to readers without specialized training in theory. Jacak uses original research results to offer a fully analytical theory formulation suitable for further development and applications. The theory is focused on the Random Phase Approximation description of plasmons in metallic nano-structures, previously defined for bulk metal. Particular attention is paid to large damping of plasmons in nanostructures including electron scattering and Lorentz friction losses, quantum description of plasmon photovoltaic effect is presented and there is in-depth analysis of plasmon-polariton kinetics in metallic nano-chains. Suitable for students in the field of plasmonics, opto-electronics and photonics, and for researchers active in the field of photo-voltaics, opto-electronics, nano-plasmonics and nano-photonics. Also of help to researchers in soft plasmonics with applications to electro-signalling in neurons.
Download or read book Plasmonics and Light Matter Interactions in Two Dimensional Materials and in Metal Nanostructures written by Paulo André Dias Gonçalves and published by Springer Nature. This book was released on 2020-03-19 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a comprehensive theoretical description of classical and quantum aspects of plasmonics in three and two dimensions, and also in transdimensional systems containing elements with different dimensionalities. It focuses on the theoretical understanding of the salient features of plasmons in nanosystems as well as on the multifaceted aspects of plasmon-enhanced light–matter interactions at the nanometer scale. Special emphasis is given to the modeling of nonclassical behavior across the transition regime bridging the classical and the quantum domains. The research presented in this dissertation provides useful tools for understanding surface plasmons in various two- and three-dimensional nanostructures, as well as quantum mechanical effects in their response and their joint impact on light–matter interactions at the extreme nanoscale. These contributions constitute novel and solid advancements in the research field of plasmonics and nanophotonics that will help guide future experimental investigations in the blossoming field of nanophotonics, and also facilitate the design of the next generation of truly nanoscale nanophotonic devices.
Download or read book Molecular Electronic Control Over Tunneling Charge Transfer Plasmons Modes written by Shu Fen Tan and published by Springer. This book was released on 2018-07-21 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the controlled immobilization of molecules between two cuboidal metal nanoparticles by means of a self-assembly method to control the quantum plasmon resonances. It demonstrates that quantum-plasmonics is possible at length scales that are useful for real applications. Light can interact with certain metals and can be captured in the form of plasmons, which are collective, ultra-fast oscillations of electrons that can be manipulated at the nano-scale. Surface plasmons are considered as a promising phenomenon for potentially bridging the gap between fast-operating-speed optics and nano-scale electronics. Quantum tunneling has been predicted to occur across two closely separated plasmonic resonators at length scales (0.3 nm) that are not accessible using present-day nanofabrication techniques. Unlike top-down nanofabrication, the molecules between the closely-spaced metal nanoparticles could control the gap sizes down to sub-nanometer scales and act as the frequency controllers in the terahertz regime, providing a new control parameter in the fabrication of electrical circuits facilitated by quantum plasmon tunneling.
Download or read book Nanoscience Volume 3 written by Paul O'Brien and published by Royal Society of Chemistry. This book was released on 2016-01-07 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasmonics Theory and Applications written by Tigran V. Shahbazyan and published by Springer Science & Business Media. This book was released on 2014-01-09 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume summarizes recent theoretical developments in plasmonics and its applications in physics, chemistry, materials science, engineering, and medicine. It focuses on recent advances in several major areas of plasmonics including plasmon-enhanced spectroscopies, light scattering, many-body effects, nonlinear optics, and ultrafast dynamics. The theoretical and computational methods used in these investigations include electromagnetic calculations, density functional theory calculations, and nonequilibrium electron dynamics calculations. The book presents a comprehensive overview of these methods as well as their applications to various current problems of interest.
