Author: Felipe de Almeida La Porta
Publisher: Springer Nature
ISBN: 3030314030
Category : Technology & Engineering
Languages : en
Pages : 528
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Book Description
In this book, the authors discuss some of the main challenges and new opportunities in science and engineering research, which involve combining computational and experimental approaches as a promising strategy for arriving at new insights into composition–structure–property relations, even at the nanoscale. From a practical standpoint, the authors show that significant improvements in the material/biomolecular foresight by design, including a fundamental understanding of their physical and chemical properties, are vital and will undoubtedly help us to reach a new technological level in the future.
Author: Philip A. Thomas
Publisher: Springer
ISBN: 3319975269
Category : Science
Languages : en
Pages : 126
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Book Description
Advances in understanding the interactions between light and subwavelength materials have enabled the author and his collaborators to tailor unique optical responses at the nanoscale. In particular, metallic nanostructures capable of supporting surface plasmons can be designed to possess spectrally narrow plasmon resonances, which are of particular interest due to their exceptional sensitivity to their local environment. In turn, combining plasmonic nanostructures with other materials in hybrid systems allows this sensitivity to be exploited in a broad range of applications. In this book the author explores two different approaches to attaining narrow plasmon resonances: in gold nanoparticle arrays by utilising diffraction coupling, and in copper thin films covered by a protective graphene layer. The performance of these resonances is then considered in a number of applications. Nanoparticle arrays are used along with an atomic heterostructure as elements in a nanomechanical electro-optical modulator that is capable of strong, broadband modulation. Strong coupling between diffraction-coupled plasmon resonances and a gold nanoparticle array and guided modes in a dielectric slab is used to construct a hybrid waveguide. Lastly, the extreme phase sensitivity of graphene-protected copper is used to detect trace quantities of small toxins in solution far below the detection limit of commercial surface plasmon resonance sensors.
Author: Ummethala, Sandeep
Publisher: KIT Scientific Publishing
ISBN: 3731511622
Category :
Languages : en
Pages : 192
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Book Description
High-speed electro-optic modulators in silicon platform are introduced and experimentally verified. The devices rely on plasmonic and photonic slot waveguides and are combined with efficient organic electro-optic materials. The bandwidth limitation of conventional silicon-organic-hybrid modulators is circumvented by capacitive coupling of the microwave signal. An advanced terahertz link that upconverts data directly from a 360 GHz carrier to an optical carrier is demonstrated for the first time.
Author: Chris D. Geddes
Publisher: John Wiley & Sons
ISBN: 1118027930
Category : Science
Languages : en
Pages : 339
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Book Description
Explains the principles and current thinking behind plasmon enhanced Fluorescence Describes the current developments in Surface Plasmon Enhanced, Coupled and Controlled Fluorescence Details methods used to understand solar energy conversion, detect and quantify DNA more quickly and accurately, and enhance the timeliness and accuracy of digital immunoassays Contains contributions by the world’s leading scientists in the area of fluorescence and plasmonics Describes detailed experimental procedures for developing both surfaces and nanoparticles for applications in metal-enhanced fluorescence
Author: Peng Yu
Publisher: Springer Nature
ISBN: 303087544X
Category : Science
Languages : en
Pages : 348
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Book Description
This book highlights cutting-edge research in surface plasmons, discussing the different types and providing a comprehensive overview of their applications. Surface plasmons (SPs) receive special attention in nanoscience and nanotechnology due to their unique optical, electrical, magnetic, and catalytic properties when operating at the nanoscale. The excitation of SPs in metal nanostructures enables the manipulation of light beyond the diffraction limit, which can be utilized for enhancing and tailoring light-matter interactions and developing ultra-compact high-performance nanophotonic devices for various applications. With clear and understandable illustrations, tables, and descriptions, this book provides physicists, materials scientists, chemists, engineers, and their students with a fundamental understanding of surface plasmons and device applications as a basis for future developments.
Author: Shangjr Gwo
Publisher: Elsevier
ISBN: 0323860184
Category : Technology & Engineering
Languages : en
Pages : 347
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Book Description
Plasmonic Materials and Metastructures: Fundamentals, Current Status, and Perspectives reviews the current status and emerging trends in the development of conventional and alternative plasmonic materials. Sections cover fundamentals and emerging trends of plasmonic materials development, including synthesis strategies (chemical and physical) and optical characterization techniques. Next, the book addresses fundamentals, properties, remaining barriers for commercial translation, and the latest advances and opportunities for conventional noble metal plasmonic materials. Fundamentals and advances for alternative plasmonic materials are also reviewed, including two-dimensional hybrid materials composed of graphene, monolayer transition metal dichalcogenides, boron nitride, etc. In addition, other sections cover applications of plasmonic metastructures enabled by plasmonic materials with improved material properties and newly discovered functionalities. Applications reviewed include quantum plasmonics, topological plasmonics, chiral plasmonics, nanolasers, imaging (metalens), active, and integrated technologies. Provides an overview of materials properties, characterization and fabrication techniques for plasmonic metastructured materials Includes key concepts and advances for a wide range of metastructured materials, including metamaterials, metasurfaces and epsilon-near-zero plasmonic metastructures Discusses emerging applications and barriers to commercial translation for quantum plasmonics, topological plasmonics, nanolasers, imaging and integrated technologies
Author: Jai Prakash
Publisher: Springer Nature
ISBN: 303139481X
Category : Technology & Engineering
Languages : en
Pages : 399
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Book Description
This book delves into the world of hybrid photocatalyst nanomaterials and their diverse applications. With a focus on interdisciplinary research, this book highlights the importance of these materials in addressing critical challenges in various fields. The book begins by introducing the significance of multifunctional hybrid photocatalyst nanomaterials and their potential impact on interdisciplinary research. It explores the synthesis techniques employed to create these advanced materials, emphasizing the integration of multiple components to enhance their photocatalytic performance. The applications of hybrid photocatalyst nanomaterials are thoroughly examined throughout the book. From wastewater treatment and energy production to environmental sensing and virus degradation, the diverse range of practical uses is explored in detail. The book also covers recent developments in semiconductor nanomaterials as sensors, screen printing techniques using hybrid nanomaterials, and the use of 2D and 3D printing in sensing applications.
Author: Mitradeep Sarkar
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
Les Plasmons de surface à l'interface d'un métal et d'un diélectrique sont des oscillations collectives des électrons libres. Pour une interface plane, les plasmons se manifestent comme des champs électromagnétiques évanescents, confinée à quelques centaines de nanomètres de la surface métallique et se propagent le long de l'interface. Ce mode plasmonique, appelé plasmon propagatif de surface (PSP), est un mode fondamental. D'autres modes fondamentaux, non-propagatifs, sont appelé plasmons localisés (LSP) et apparaissent dans les nano-particules métalliques. Dans ce travail, nous avons calculé analytiquement la polarisabilité de géométries métalliques complexes et les résultats obtenus permettent d'expliquer les conditions de résonance des différents modes plasmoniques.Parmi les divers modes plasmoniques, plusieurs modes fondamentaux ont été étudiés en détail et décrits par une formulation analytique. Tout d'abord, dans un réseau binaire de lignes métalliques, des plasmons propagatifs confinés par la dimension finie des lignes sont générés. Ce mode plasmonique est appelé plasmons propagatifs confinée (CPP). D'autre part, dans des réseaux périodiques de nano-particules métalliques, déposées sur un film métallique, des modes de Bragg (BM) sont excités par la diffraction des PSP. De plus, dans de telles structures, un couplage harmonique entre les LSP des nano-particules et le PSP du film métallique sous-jacent se traduit par l'apparition d'un mode hybride (HLP). Les caractéristiques de ce mode hybride pour un réseau de nano-cylindres métalliques sur un film métallique sont présentées en détails, en particulier son intérêt en bio-détection.L'effet du milieu diélectrique environnant sur les modes plasmoniques est utilisé dans les détecteurs basés sur la résonance des plasmons de surface (SPR). Ces systèmes mesurent le décalage de la résonance d'un mode plasmonique, qui est fonction de l'indice de réfraction du milieu diélectrique. L'un des buts de ce travail est d'optimiser les détecteurs SPR pour des expériences typiques sondes - cibles où les molécules sonde sont greffées à la surface du capteur. Nous avons montré que par une fonctionnalisation sélective de la surface métallique, une amélioration de la performance de détection peut être obtenue en terme de quantité de molécules cibles détectable. L'amélioration de champ proche joue aussi un rôle majeur dans les techniques de diffusion Raman exaltée de surface (SERS). La présence de certains des modes plasmoniques étudiés dans les substrats nano-structurés permet d'augmenter significativement l'intensité du signal SERS.Pour réaliser ce travail, des méthodes numériques adaptées à la géométrie particulière des structures étudiées ont été développés pour calculer les distributions des champs proches et lointains dans ces structures. Les caractéristiques de ces modes plasmoniques ont été mesurés expérimentalement et leurs performances en détection SPR ont été démontrées en utilisant une configuration basée sur une interrogation angulo-spectrale en configuration de Kretschmann. Des expériences de SERS ont également été réalisées en collaboration avec le CSPBAT à Paris 13. Les différentes structures ont été fabriquées par lithographie électronique à l'IEF à Paris 11. Les résultats expérimentaux concordent avec les résultats numériques et analytiques.Cette description détaillée des modes plasmoniques offre une compréhension plus complète du phénomène de résonance des plasmons de surface dans les nanostructures métalliques et permet d'optimiser les structures selon l'application souhaitée. Le modèle présenté dans ce travail est relativement général et peut être utilisé pour décrire les propriétés électromagnétiques de différentes géométries et configurations expérimentales. De la représentation complète des modes plasmoniques, différents aspects des interactions photons-plasmons peuvent ainsi être étudiés.
Author: Zhenglong Zhang
Publisher: Springer Nature
ISBN: 9811951888
Category : Science
Languages : en
Pages : 95
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Book Description
This book highlights the principles, research advances, and applications of plasmonic photocatalysis. As a new class of catalysts, plasmonic nanostructures with the unique ability to harvest solar energy across the entire visible spectrum and produce effective photocatalysis are viewed as a promising pathway for the energy crisis. Although plasmonic catalysis has been widely reported, the excitation mechanism and energy transfer pathway are still controversial. Meanwhile, the latest discovery of catalysis on nanomaterials is less reported. This book outlines the basics of plasmonic photocatalysis, including the electromagnetic properties of metal materials and surface plasmon, and discusses the catalytic mechanisms including the nearfield enhancements, hot electron, and thermal effects. In addition, the measurement methods and current advances on molecules and nanocrystals are presented in detail. Suitable for graduate students and researchers in physics, optics and optical engineering, and materials science, the book will deepen readers' understanding of the interaction between light and nanomaterials and expand their knowledge of the principles and applications of nanophotonics.
Author: Lhadi Merhari
Publisher: Springer Science & Business Media
ISBN: 0387304282
Category : Technology & Engineering
Languages : en
Pages : 840
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Book Description
This book covers the latest advances in polymer-inorganic nanocomposites, with particular focus on high-added-value applications in fields including electronics, optics, magnetism and biotechnology. The unique focus of this book is on electronic, optical, magnetic and biomedical applications of hybrid nanocomposites. Coverage includes: Synthesis methods and issues and production scale-up; Characterization methods; Electronic applications; Optical applications and Photonics; Magnetic applications; and Biomedical applications. The book offers readers a solid grasp of the state of the art, and of current challenges in non-traditional applications of hybrid nanocomposites.
