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| Author | : 柯忠廷 |
| Publisher | : |
| Total Pages | : |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
| Author | : Jie Qi |
| Publisher | : |
| Total Pages | : |
| Release | : 2017 |
| Genre | : Electronic dissertations |
| ISBN | : |
As device requirements keep pushing toward smaller and higher aspect ratio structures, atomic layer deposition (ALD) has become a promising technique for the deposition of nanometer dielectric and metallic thin films with applications in semiconductors, nanotechnology, catalysis, and energy. Meanwhile, the field of plasmonics has gained attention, driven by a variety of exciting applications including chemical and biological sensors, solar energy harvesting devices, spectroscopy, and photocatalytic conversion. A key feature of nanoscale plasmonic materials is a strong dependence of the plasmon resonance on size, shape, composition, and surroundings of the nanostructures. ALD offers an effective means to tune the morphology, composition, and particle-particle junctions of nanostructures with precise control at an atomic level. However, successful application of ALD to plasmonics requires detailed understanding of selective growth, nucleation process, and their dependence on growth conditions for nanostructures. In this Cu ALD study, we identified optimal process parameters to achieve conformal deposition on nanostructures with good nucleation. A selectivity window was also defined to help establish a set of relations between selective deposition and growth conditions. Furthermore, we demonstrated that the plasmon resonance can be tuned significantly by Cu ALD and provided a deeper understanding of this process for applications such as plasmonic rectenna. It makes a remarkable contribution to process optimization and device design to enable widespread utilization of this technology in photonics and nanoelectronics.
| Author | : Chengwu Zhang |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2021 |
| Genre | : |
| ISBN | : |
Plasmonics, a flourishing emergent science and technology, is about the interactions between electromagnetic radiation and electrons at metallic nanoparticles. It opens a new pathway for controlling chemical reactions on metallic nanostructures. Plasmonic dimers, especially with sub-10 nm nanogaps, can greatly enhance local electric field intensity through excitations of surface plasmons, which are collective oscillations of electrons excited by light. Previous studies to fabricate plasmonic dimers with sub-10 nm nanogaps include techniques such as electromigration, electroless gold plating, self-assembly, and high resolution electron beam lithography. However, these methods are limited either in pattern design or low yield for scaling up. To attain more flexibility and reliability in fabrication, there is a need for scalable methods to fabricate plasmonic dimers with sub-10 nm nanogaps, which is crucial for their use in practical applications. Atomic layer deposition (ALD) is a thin-film deposition technique capable of producing conformal thin films with precise control of thickness and composition at the atomic level. Area-selective ALD (AS-ALD) is a bottom-up process for direct deposition of materials only on desired regions of a substrate. In this study, we have explored incident light excitations and plasmonic resonances matching to achieve localized surface plasmon resonances (LSPRs) in the area-selective atomic layer deposition (AS-ALD) process. We have applied copper AS-ALD to tune gap sizes of layered and mixed plasmonic dimer arrays and electrically connected dipole-line arrays to sub-10 nm. Results demonstrate that AS-ALD is a reliable and flexible method to achieve sub-10 nm gaps on large area arrays.
| Author | : Caixia Kan |
| Publisher | : John Wiley & Sons |
| Total Pages | : 469 |
| Release | : 2024-02-13 |
| Genre | : Technology & Engineering |
| ISBN | : 3527840842 |
Firsthand insights on a unique class of optoelectronic materials, covering technologies and applications in catalysis, sensing, and spectroscopy Plasmonic Metal Nanostructures provides broad coverage of the field of plasmonic technologies, from fundamentals to real-world applications such as highly sensitive spectroscopy and surface analysis techniques, summarizing the recent progress in plasmonics and their applications, with a focus on comprehensive and authoritative discussions of fabrication and characterization of the materials and their technological uses. The text also addresses current trends and advances in materials for plasmonics, such as nanostructures with novel shapes, composite nanostructures, and thin films. Starting with an overview of optical properties in materials from macro- to micro- and nanoscale, the text then moves on to discuss the fundamentals and dielectric modifications and advanced characterization methods of plasmonic nanostructures. Next, the latest development of metal nanostructures, such as core-shell and porous nanorods, nanowires for conductive films, new star-like nanoplates, different open nanostructures, and metal-semiconductor composite nanostructures, are explained in detail. The final portion of the text discusses applications of plasmonics for semiconductor optoelectronic devices, catalysis, sensing, SERS (surface-enhanced Raman Spectroscopy), and energy. Written by a highly qualified academic, Plasmonic Metal Nanostructures covers sample topics such as: Drude model for free electron gas, dielectric function of the free electron gas, surface plasmon polaritons, plasmon at metal-vacuum interface, and surface plasmon effects Drude-Lorentz model of metal nanoparticles, dielectric properties of complex nanostructures, optical property analysis of isolated nanoparticles, and numerical simulation of optical properties One-dimensional Au nanostructures, core-shell nanostructures, alloy Au/Ag nanorods, porous nanorods, and yolk-shell nanostructures FCC nanoplates, Au nanoplates with novel and well-defined shapes, metal decorated semiconductors, and optical properties of Au NBP-embedded nanostructures Providing complete coverage of plasmonic nanostructures and their applications in catalysis, sensing, spectroscopy, thin-film, analysis, optoelectronics, and a variety of other fields. The book about Plasmonic Metal Nanostructures is an essential resource for materials scientists, physics researchers and photochemists, along with catalytic, biomedical, and physical chemists.
| Author | : Luis Liz-Marzán |
| Publisher | : CRC Press |
| Total Pages | : 911 |
| Release | : 2020-04-23 |
| Genre | : Medical |
| ISBN | : 1000020967 |
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.
| Author | : Alexey A. Toropov |
| Publisher | : OUP Oxford |
| Total Pages | : 385 |
| Release | : 2015-04-02 |
| Genre | : Technology & Engineering |
| ISBN | : 0191054003 |
Metal-semiconductor nanostructures represent an important new class of materials employed in designing advanced optoelectronic and nanophotonic devices, such as plasmonic nanolasers, plasmon-enhanced light-emitting diodes and solar cells, plasmonic emitters of single photons, and quantum devices operating in infrared and terahertz domains. The combination of surface plasmon resonances in conducting structures, providing strong concentration of an electromagnetic optical field nearby, with sharp optical resonances in semiconductors, which are highly sensitive to external electromagnetic fields, creates a platform to control light on the nanoscale. The design of the composite metal-semiconductor system imposes the consideration of both the plasmonic resonances in metal and the optical transitions in semiconductors - a key issue being their resonant interaction providing a coupling regime. In this book the reader will find descriptions of electrodynamics of conducting structures, quantum physics of semiconductor nanostructures, and guidelines for advanced engineering of metal-semiconductor composites. These constituents form together the physical basics of the metal-semiconductor plasmonics, underlying many effective practical applications. The list of covered topics also includes the review of recent results, such as the achievement of a strong coupling regime, and the preservation of non-classical statistics of photons in plasmonic cavities combined with semiconductor nanostructures.
| Author | : Ya-Wen Zhang |
| Publisher | : John Wiley & Sons |
| Total Pages | : 738 |
| Release | : 2018-05-16 |
| Genre | : Science |
| ISBN | : 1119214629 |
Systematically summarizes the current status and recent advances in bimetallic structures, their shape-controlled synthesis, properties, and applications Intensive researches are currently being carried out on bimetallic nanostructures, focusing on a number of fundamental, physical, and chemical questions regarding their synthesis and properties. This book presents a systematic and comprehensive summary of the current status and recent advances in this field, supporting readers in the synthesis of model bimetallic nanoparticles, and the exploration and interpretation of their properties. Bimetallic Nanostructures: Shape-Controlled Synthesis for Catalysis, Plasmonics and Sensing Applications is divided into three parts. Part 1 introduces basic chemical and physical knowledge of bimetallic structures, including fundamentals, computational models, and in situ characterization techniques. Part 2 summarizes recent developments in synthetic methods, characterization, and properties of bimetallic structures from the perspective of morphology effect, including zero-dimensional nanomaterials, one-dimensional nanomaterials, and two-dimensional nanomaterials. Part 3 discusses applications in electrocatalysis, heterogeneous catalysis, plasmonics and sensing. Comprehensive reference for an important multidisciplinary research field Thoroughly summarizes the present state and latest developments in bimetallic structures Helps researchers find optimal synthetic methods and explore new phenomena in surface science and synthetic chemistry of bimetallic nanostructures Bimetallic Nanostructures: Shape-Controlled Synthesis for Catalysis, Plasmonics and Sensing Applications is an excellent source or reference for researchers and advanced students. Academic researchers in nanoscience, nanocatalysis, and surface plasmonics, and those working in industry in areas involving nanotechnology, catalysis and optoelectronics, will find this book of interest.
| Author | : Peng Yu |
| Publisher | : Springer Nature |
| Total Pages | : 348 |
| Release | : 2022-03-01 |
| Genre | : Science |
| ISBN | : 303087544X |
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 | : Mario Birkholz |
| Publisher | : John Wiley & Sons |
| Total Pages | : 378 |
| Release | : 2006-05-12 |
| Genre | : Technology & Engineering |
| ISBN | : 3527607048 |
With contributions by Paul F. Fewster and Christoph Genzel While X-ray diffraction investigation of powders and polycrystalline matter was at the forefront of materials science in the 1960s and 70s, high-tech applications at the beginning of the 21st century are driven by the materials science of thin films. Very much an interdisciplinary field, chemists, biochemists, materials scientists, physicists and engineers all have a common interest in thin films and their manifold uses and applications. Grain size, porosity, density, preferred orientation and other properties are important to know: whether thin films fulfill their intended function depends crucially on their structure and morphology once a chemical composition has been chosen. Although their backgrounds differ greatly, all the involved specialists a profound understanding of how structural properties may be determined in order to perform their respective tasks in search of new and modern materials, coatings and functions. The author undertakes this in-depth introduction to the field of thin film X-ray characterization in a clear and precise manner.
| Author | : Nicola Pinna |
| Publisher | : John Wiley & Sons |
| Total Pages | : 463 |
| Release | : 2012-09-19 |
| Genre | : Technology & Engineering |
| ISBN | : 3527639926 |
Atomic layer deposition, formerly called atomic layer epitaxy, was developed in the 1970s to meet the needs of producing high-quality, large-area fl at displays with perfect structure and process controllability. Nowadays, creating nanomaterials and producing nanostructures with structural perfection is an important goal for many applications in nanotechnology. As ALD is one of the important techniques which offers good control over the surface structures created, it is more and more in the focus of scientists. The book is structured in such a way to fi t both the need of the expert reader (due to the systematic presentation of the results at the forefront of the technique and their applications) and the ones of students and newcomers to the fi eld (through the first part detailing the basic aspects of the technique). This book is a must-have for all Materials Scientists, Surface Chemists, Physicists, and Scientists in the Semiconductor Industry.
