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Modelling And Mechanics Of Carbon Based Nanostructured Materials

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Modelling and Mechanics of Carbon Based Nanostructured Materials

Modelling and Mechanics of Carbon Based Nanostructured Materials Book
Author : Duangkamon Baowan,Barry J. Cox,Tamsyn A. Hilder,James M. Hill,Ngamta Thamwattana
Publisher : William Andrew
Release : 2017-01-03
ISBN : 9780128124635
Language : En, Es, Fr & De

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Book Description :

The advent of nanotechnology has generated considerable advances in industries such as composite materials, electronics and medicine. The unique physical properties observed at the nanoscale are often counter-intuitive, sometimes astounding researchers and thus driving numerous investigations into their special properties and their potential applications. Typically, existing research has been conducted through experimental studies and molecular dynamics simulations. However, often mathematical modelling facilitates device development and provides a quicker route to applications of the technology. Modelling and Mechanics of Carbon-based Nanostructured Materials sets out the principles of applied mathematical modelling in the currently topical area of nanotechnology. It is purposely designed to be self-contained, meaning that one can gain all the necessary modeling principles required for working with nanostructures by reading it. This demonstrates the process of utilizing elementary geometry and mechanics, combined with special function theory, to formulate simple applied mathematical models in a nanotechnology context. Explores how modelling and mechanical principles are applied to better understand the behavior of carbon nanomaterials Clearly explains important models such as the Lennard-Jones potential, in a carbon nanomaterials context Includes worked examples and exercises to help readers to reinforce what they have read

Modelling and Mechanics of Carbon based Nanostructured Materials

Modelling and Mechanics of Carbon based Nanostructured Materials Book
Author : Duangkamon Baowan,Barry J Cox,Tamsyn A Hilder,James M Hill,Ngamta Thamwattana
Publisher : William Andrew
Release : 2017-02-12
ISBN : 0128124644
Language : En, Es, Fr & De

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Book Description :

Modelling and Mechanics of Carbon-based Nanostructured Materials sets out the principles of applied mathematical modeling in the topical area of nanotechnology. It is purposely designed to be self-contained, giving readers all the necessary modeling principles required for working with nanostructures. The unique physical properties observed at the nanoscale are often counterintuitive, sometimes astounding researchers and thus driving numerous investigations into their special properties and potential applications. Typically, existing research has been conducted through experimental studies and molecular dynamics simulations. This book goes beyond that to provide new avenues for study and review. Explores how modeling and mechanical principles are applied to better understand the behavior of carbon nanomaterials Clearly explains important models, such as the Lennard-Jones potential, in a carbon nanomaterials context Includes worked examples and exercises to help readers reinforce what they have read

Mechanics of Carbon Nanotubes

Mechanics of Carbon Nanotubes Book
Author : Vasyl Harik
Publisher : Academic Press
Release : 2018-07-27
ISBN : 0128110724
Language : En, Es, Fr & De

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Book Description :

Mechanics of Carbon Nanotubes: Fundamentals, Modeling and Safety draws on the latest academic research and nanotechnology applications to provide a comprehensive guide on the most recent developments in the science of carbon nanotubes. The fundamentals of nanomechanics and mechanical behavior of carbon nanotubes are presented in initial chapters, followed by more advanced topics such as the classification of carbon nanotubes, carbon nanotubes in nanocomposites, multiwall carbon nanotubes, and recent trends. This book provides a system for the classification of carbon nanotubes into 20 classes, aiding correct selection for various applications, and includes the Atomic Registry Matrix Analysis for nanoscale interfaces, essential for design involving friction or sliding. Parametric maps are included to help readers pick the correct model for a particular CNT geometry, in addition to a thorough examination of the effective thickness paradox and safety issues related to CNTs, such as toxicity at high aspect ratio. Mechanics of Carbon Nanotubes is essential reading for anyone involved in research or engineering that includes carbon nanotubes, be they students or seasoned professionals in the field. It is particularly useful to those working with applications in the areas of microelectronics, robotics, aerospace, composites, or prosthetics. Provides a system for the classification of carbon nanotubes, aiding correct selection for various applications Includes the Matrix Registry Analysis for nanoscale interfaces that is essential for design involving friction or sliding Features parametric maps to help readers pick the right model for a particular CNT geometry (beam vs. shell vs. thin or thick shells, etc.) Presents a thorough examination of the safety issues related to CNTs, including toxicity at high aspect ratio

Carbon Nanomaterials Modeling Design and Applications

Carbon Nanomaterials  Modeling  Design  and Applications Book
Author : Kun Zhou
Publisher : CRC Press
Release : 2019-07-17
ISBN : 1351123572
Language : En, Es, Fr & De

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Book Description :

Carbon Nanomaterials: Modeling, Design, and Applications provides an in-depth review and analysis of the most popular carbon nanomaterials, including fullerenes, carbon nanotubes, graphene and novel carbon nanomaterial-based membranes and thin films, with emphasis on their modeling, design and applications. This book provides basic knowledge of the structures, properties and applications of carbon-based nanomaterials. It illustrates the fundamental structure-property relationships of the materials in both experimental and modeling aspects, offers technical guidance in computational simulation of nanomaterials, and delivers an extensive view on current achievements in research and practice, while presenting new possibilities in the design and usage of carbon nanomaterials. This book is aimed at both undergraduate and graduate students, researchers, designers, professors, and professionals within the fields of materials science and engineering, mechanical engineering, applied physics, and chemical engineering.

Thermal Behaviour and Applications of Carbon Based Nanomaterials

Thermal Behaviour and Applications of Carbon Based Nanomaterials Book
Author : Dimitrios V. Papavassiliou,Hai M. Duong,Feng Gong
Publisher : Elsevier
Release : 2020-04-15
ISBN : 0128176822
Language : En, Es, Fr & De

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Book Description :

Nanocomposites with Carbon-based nanofillers (e.g., carbon nanotubes, graphene sheets and nanoribbons etc.) form a class of extremely promising materials for thermal applications. In addition to exceptional material properties, the thermal conductivity of the carbon-based nanofillers can be higher than any other known material, suggesting the possibility to engineer nanocomposites that are both lightweight and durable, and have unique thermal properties. This potential is hindered by thermal boundary resistance (TBR) to heat transfer at the interface between nanoinclusions and the matrix, and by the difficulty to control the dispersion pattern and the orientation of the nanoinclusions. Thermal Behaviour and Applications of Carbon-Based Nanomaterials: Theory, Methods and Applications explores heat transfer in nanocomposites, discusses techniques predicting and modeling the thermal behavior of carbon nanocomposites at different scales, and methods for engineering applications of nanofluidics and heat transfer. The chapters combine theoretical explanation, experimental methods and computational analysis to show how carbon-based nanomaterials are being used to optimise heat transfer. The applications-focused emphasis of this book makes it a valuable resource for materials scientists and engineers who want to learn more about nanoscale heat transfer. Offers an informed overview of how carbon nanomaterials are currently used for nanoscale heat transfer Discusses the major applications of carbon nanomaterials for heat transfer in a variety of industry sectors Details the major computational methods for the analysis of the thermal properties of carbon nanomaterials

Trends in Nanoscale Mechanics

Trends in Nanoscale Mechanics Book
Author : Vasyl Michael Harik,Manuel D. Salas
Publisher : Springer Science & Business Media
Release : 2013-03-09
ISBN : 940170385X
Language : En, Es, Fr & De

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Book Description :

An outstanding feature of this book is a collection of state-of-the-art reviews written by leading researchers in the nanomechanics of carbon nanotubes, nanocrystalline materials, biomechanics and polymer nanocomposites. The structure and properties of carbon nanotubes, polycrystalline metals, and coatings are discussed in great details. The book is an exceptional resource on multi-scale modelling of metals, nanocomposites, MEMS materials and biomedical applications. An extensive bibliography concerning all these topics is included. Highlights on bio-materials, MEMS, and the latest multi-scale methods (e.g., molecular dynamics and Monte Carlo) are presented. Numerous illustrations of inter-atomic potentials, nanotube deformation and fracture, grain rotation and growth in solids, ceramic coating structures, blood flows and cell adhesion are discussed. This book provides a comprehensive review of latest developments in the analysis of mechanical phenomena in nanotechnology and bio-nanotechnology.

Modeling of Carbon Nanotubes Graphene and their Composites

Modeling of Carbon Nanotubes  Graphene and their Composites Book
Author : Konstantinos I. Tserpes,Nuno Silvestre
Publisher : Springer Science & Business Media
Release : 2013-10-15
ISBN : 3319012010
Language : En, Es, Fr & De

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Book Description :

A large part of the research currently being conducted in the fields of materials science and engineering mechanics is devoted to carbon nanotubes and their applications. In this process, modeling is a very attractive investigation tool due to the difficulties in manufacturing and testing of nanomaterials. Continuum modeling offers significant advantages over atomistic modeling. Furthermore, the lack of accuracy in continuum methods can be overtaken by incorporating input data either from experiments or atomistic methods. This book reviews the recent progress in continuum modeling of carbon nanotubes and their composites. The advantages and disadvantages of continuum methods over atomistic methods are comprehensively discussed. Numerical models, mainly based on the finite element method, as well as analytical models are presented in a comparative way starting from the simulation of isolated pristine and defected nanotubes and proceeding to nanotube-based composites. The ability of continuum methods to bridge different scales is emphasized. Recommendations for future research are given by focusing on what still continuum methods have to learn from the nano-scale. The scope of the book is to provide current knowledge aiming to support researchers entering the scientific area of carbon nanotubes to choose the appropriate modeling tool for accomplishing their study and place their efforts to further improve continuum methods.

Vibration and Buckling of Carbon Nanotube Graphene and Nanowire

Vibration and Buckling of Carbon Nanotube  Graphene  and Nanowire Book
Author : Mohammad Hadi Mahdavi
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Nanostructured materials with superior physical properties hold promise for the development of novel nanodevices. Full potential applications of such advanced materials require accurate characterization of their physical properties, which in turn necessitates the development of computer-based simulations along with novel experimental techniques. Since controlled experiments are difficult for nanoscale materials and atomic studies are computationally expensive, continuum mechanics-based simulations of nanomaterials and nanostructures have become the focal points of computational nano-science and materials modelling. In this study, emphasis is given to predicting the mechanical behaviour of carbon nanotube (CNT), graphene, nanowire (NW), and nanowire encapsulated in carbon nanotube ([email protected]), which are important nanostructures in a variety of real-world applications such as aerospace, automotive, MEMS/NEMS, and electronics. Using elastic continuum models, nonlinear transverse vibration and postbuckling behaviour of CNTs and graphenes embedded in polymer medium is studied. The source of nonlinearity comes from the van der Waals (vdW) interactions between adjacent layers as well as between surrounding polymer medium and carbon-based nanostructure, in which the latter is investigated for the first time in literature. Euler-Bernoulli and Timoshenko beam theories are employed to model CNTs while classic Kirchhoff plate theory is used to model graphene sheets (GSs). A nonlinear function in terms of the graphene or CNT deflection is derived from the interfacial cohesive law to describe the interfacial interactions preserving true nonlinear nature of the vdW forces. Harmonic balance method is successfully employed to solve the nonlinear governing equations and provide parametric and explicit equations for predicting nonlinear resonant frequencies and postbuckling equilibrium path of the embedded CNTs and GSs. Unlike linear analysis results, the resonant frequencies and postbuckling loads are deflection dependent. The surrounding medium effect on the vibrational and buckling behaviour of these embedded carbon-based nanostructures have been studied systematically. Regarding NWs and [email protected], the effects of surface elasticity and residual surface stress on the stiffness, vibration and buckling of these nano structured materials are investigated using Euler-Bernoulli and Timoshenko beam models to reveal their size-dependent properties. The vdW interactions between the NW and CNT at the interface of [email protected] are accurately described by using the cohesive Law. Effects of axial load, size, boundary conditions and mode shape number on the vibration and buckling of above mentioned nanostructures are discussed in detail. The quantitative and parametric analysis in this study may contribute to a better understanding on the mechanical behaviour of these nanostructures, thus leading to a better design in real applications.

Mechanics of Nanomaterials

Mechanics of Nanomaterials Book
Author : Mohamed Ibrahim
Publisher : Unknown
Release : 2017
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

In this Dissertation, the fundamentals of mechanics of nanomaterials in micro/nano-scale applications are established and discussed. Because nanomaterials are distinguished with unique material structures and characteristics, nanomaterials reflect unique mechanics in various applications. The mechanics of nanomaterials differs from the conventional mechanics of materials in the need to incorporate special measures that can capture the material's mechanics as a function of the material structure and the material size. Therefore, new experimental and theoretical models should be developed to give the crucial understanding of the physics of the mechanics of nanomaterials. In this Dissertation, we harness the fundamental laws of continuum mechanics, materials science, solid state physics, and lattice dynamics to understand and model the mechanics of nanomaterials in small-scale applications. In the first part of this Dissertation, the essential aspects that should be considered when developing models for the mechanics of nanomaterials are determined and discussed. In addition, the models and theories that have the merits of representing the mechanics of nanomaterials are derived and developed. To guarantee accurate modeling of the mechanics of nanomaterials, these models and theories incorporate measures that capture the material structure and size effects. In the second part, models are proposed for nanomaterials characterization. Micromechanical models are developed for nanostructured materials. In the context of these models, the effective elastic properties of nanostructured materials are related to the size of the nanoinhomogeneities forming their material structures. These models are then harnessed to report the elastic properties of nanocrystalline materials including diamond, silicon, copper, aluminum, silver, gold, and platinum when decreasing the grain average size from 200 nm to 2 nm, for the first time. The experimental observations for the degradations in the elastic properties of nanocrystalline materials are captured by the developed micromechanics models. Moreover, continuum models for the materials dispersions are developed for single crystalline nanomaterials. These models are used to report the elastic properties of diamond, graphite, silicon, copper, silver, gold, platinum, barium oxide, lithium deuteride, lithium hydride, magnesium lead, magnesium stannide, and nickel oxide single nanocrystals. In the third part, the developed fundamentals, theories, and models are harnessed to represent the mechanics of nanomaterials in selected potential micro-/nano-scale applications. First, the sensitives and resolutions of carbon nanotubes-based mechanical resonators are reported for mass sensing applications. Second, the nonlinear dynamics of electrostatically actuated micro/nano-resonators made of functionally graded materials and nanocrystalline materials are modeled and investigated. Third, the elastic and the buckling characteristics of nanobeams and nanowires are reported. This dissertation creates a benchmark for future studies on nanomaterials and their mechanics.

Molecular Modelling and Synthesis of Nanomaterials

Molecular Modelling and Synthesis of Nanomaterials Book
Author : Ihsan Boustani
Publisher : Springer Nature
Release : 2020-07-14
ISBN : 3030327264
Language : En, Es, Fr & De

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Book Description :

This book presents nanomaterials as predicted by computational modelling and numerical simulation tools, and confirmed by modern experimental techniques. It begins by summarizing basic theoretical methods, then giving both a theoretical and experimental treatment of how alkali metal clusters develop into nanostructures, as influenced by the cluster's "magic number" of atoms. The book continues with a discussion of atomic clusters and nanostructures, focusing primarily on boron and carbon, exploring, in detail, the one-, two-, and three-dimensional structures of boron and carbon, and describing their myriad potential applications in nanotechnology, from nanocoating and nanosensing to nanobatteries with high borophene capacity. The broad discussion of computational modelling as well as the specific applications to boron and carbon, make this book an essential reference resource for materials scientists in this field of research.

Structure and Multiscale Mechanics of Carbon Nanomaterials

Structure and Multiscale Mechanics of Carbon Nanomaterials Book
Author : Oskar Paris
Publisher : Springer
Release : 2015-11-26
ISBN : 3709118875
Language : En, Es, Fr & De

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Book Description :

This book provides a broad overview on the relationship between structure and mechanical properties of carbon nanomaterials from world-leading scientists in the field. The main aim is to get an in-depth understanding of the broad range of mechanical properties of carbon materials based on their unique nanostructure and on defects of several types and at different length scales. Besides experimental work mainly based on the use of (in-situ) Raman and X-ray scattering and on nanoindentation, the book also covers some aspects of multiscale modeling of the mechanics of carbon nanomaterials.

Low Dimensional and Nanostructured Materials and Devices

Low Dimensional and Nanostructured Materials and Devices Book
Author : Hilmi Ünlü,Norman J. M. Horing,Jaroslaw Dabrowski
Publisher : Springer
Release : 2015-12-01
ISBN : 3319253409
Language : En, Es, Fr & De

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Book Description :

This book focuses on the fundamental phenomena at nanoscale. It covers synthesis, properties, characterization and computer modelling of nanomaterials, nanotechnologies, bionanotechnology, involving nanodevices. Further topics are imaging, measuring, modeling and manipulating of low dimensional matter at nanoscale. The topics covered in the book are of vital importance in a wide range of modern and emerging technologies employed or to be employed in most industries, communication, healthcare, energy, conservation , biology, medical science, food, environment, and education, and consequently have great impact on our society.

Nanostructured Materials for Solar Energy Conversion

Nanostructured Materials for Solar Energy Conversion Book
Author : Tetsuo Soga
Publisher : Elsevier
Release : 2006-12-14
ISBN : 9780080468303
Language : En, Es, Fr & De

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Book Description :

Nanostructured Materials for Solar Energy Conversion covers a wide variety of materials and device types from inorganic materials to organic materials. This book deals with basic semiconductor physics, modelling of nanostructured solar cell, nanostructure of conventional solar cells such as silicon, CIS and CdTe, dye-sensitized solar cell, organic solar cell, photosynthetic materials, fullerene, extremely thin absorber (ETA) solar cell, quantum structured solar cell, intermediate band solar cell, carbon nanotube, etc. including basic principle and the latest results. There are many books written on conventional p-n junction solar cells, but few books focus on new concepts in this area. * Focuses on the use of nanostructured materials for solar energy * Looks at a wide variety of materials and device types * Covers both organic and inorganic materials

Introduction to Graphene Based Nanomaterials

Introduction to Graphene Based Nanomaterials Book
Author : Luis E. F. Foa Torres,Stephan Roche,Jean-Christophe Charlier
Publisher : Cambridge University Press
Release : 2014-01-23
ISBN : 1107655951
Language : En, Es, Fr & De

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Book Description :

Beginning with an introduction to carbon-based nanomaterials, their electronic properties, and general concepts in quantum transport, this detailed primer describes the most effective theoretical and computational methods and tools for simulating the electronic structure and transport properties of graphene-based systems. Transport concepts are clearly presented through simple models, enabling comparison with analytical treatments, and multiscale quantum transport methodologies are introduced and developed in a straightforward way, demonstrating a range of methods for tackling the modelling of defects and impurities in more complex graphene-based materials. The authors also discuss the practical applications of this revolutionary nanomaterial, contemporary challenges in theory and simulation, and long-term perspectives. Containing numerous problems for solution, real-life examples of current research, and accompanied online by further exercises, solutions and computational codes, this is the perfect introductory resource for graduate students and researchers in nanoscience and nanotechnology, condensed matter physics, materials science and nanoelectronics.

Emerging Natural and Tailored Nanomaterials for Radioactive Waste Treatment and Environmental Remediation

Emerging Natural and Tailored Nanomaterials for Radioactive Waste Treatment and Environmental Remediation Book
Author : Changlun Chen
Publisher : Academic Press
Release : 2019-04-25
ISBN : 0081027761
Language : En, Es, Fr & De

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Book Description :

Emerging Natural and Tailored Nanomaterials for Radioactive Waste Treatment and Environmental Remediation: Principles and Methodologies, Volume 29 provides an overview of the most important radionuclide sources in the environment, their interaction with environmental media, and appropriate remediation techniques. The book focuses on the assessment of radionuclide sorption behavior in contaminated sites and the synthesis of new materials for radionuclides remediation through sorption concepts. Chapters investigate the main interaction mechanisms between toxic/radioactive metal ions with natural and manmade materials, natural clay minerals and oxides, and novel nanomaterials, such as ordered mesoporous silicas, carbon nanotubes, graphene, and metal-organic framework-based materials. Techniques and models discussed include kinetics analysis, thermodynamic analysis, surface complexation models, spectroscopic techniques, and theoretical calculations. Provides a systemic discussion on the interactions between toxic and radioactive metal ions and natural and manmade materials Helps to select the best approach to remove toxic/radioactive metal ions from a surface Edited by a scientific authority in toxic/radioactive metal ion interactions

Experimental Characterization Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composites

Experimental Characterization  Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composites Book
Author : Francesco Marotti De Sciarra,Pietro Russo
Publisher : William Andrew
Release : 2018-03-23
ISBN : 0323480624
Language : En, Es, Fr & De

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Book Description :

Experimental Characterization, Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composite focuses on the recent observations and predictions regarding the size-dependent mechanical properties, material properties and processing issues of carbon nanotubes (CNTs) and other nanostructured materials. The book takes various approaches, including dedicated characterization methods, theoretical approaches and computer simulations, providing a detailed examination of the fundamental mechanisms governing the deviations of the properties of CNTs and other nanostructured materials. The book explores their applications in materials science, mechanics, engineering, chemistry and physics due to their unique and appealing properties. The use of such materials is, however, still largely limited due to the difficulty in tuning their properties and morphological and structural features. Presents a thorough discussion on how to effectively model the properties of carbon nanotubes and their polymer nanocomposites Includes a size-dependent analysis of properties and multiscale modeling Outlines the fundamentals and procedures of computational modeling as it is applied to carbon nanotubes and other nanomaterials

Electron Emission from Nanostructured Materials

Electron Emission from Nanostructured Materials Book
Author : Abdelilah Safir
Publisher : Unknown
Release : 2010
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

In this dissertation, standardized methods for measuring electron emission (EE) from nanostructured materials are established. Design of an emitter array platform, synthesis and nanomanipulation of different types of are successfully conducted. Preexisting as well as novel nanostructures are examined for possible use as electron point sources. Three main categories of emitters are under evaluation: oxide nanowires, metallic nanowires and carbon based nanomaterials (CBNs). Tungsten oxides nanowires have low work function, then metallic nanowires have high electrical conductivity and abundant number of free electrons at and below their Fermi level and lastly, CBNs have superior electrical, mechanical, chemical and thermal properties. This evaluation is designed to compare and choose among the nanoemitters that are suitable for EE. Simulation through theoretical modeling is provided to optimize the parameters directly or indirectly affecting EE properties. The models are to enhance the emitter's performance through increase the packing density, reduce the field screening effect, lower the turn-on and the threshold electric fields and increase the emission current densities. The current estimations and the modeling of the validity regions where EE types theoretically exist, help to select and fabricate optimum emitters. An assembly consisting of sample substrate, electrical feedthroughs, electrodes, nano/micro-manipulator and insulators are mounted within a vacuum chamber. An ion vacuum pump and a turbo pump are used to reach a vacuum pressure of 10−7 Torr. Two systems are used for EE characterization of nanostructures: bulk and In-situ configurations. The bulk investigation is realized by designing a vacuum chamber and different sample holders that can resist harsh environment as well as high temperature for both FE and TE experiments. In-situ experiments are conducted in the chamber of the scanning electron microscope (SEM), it consists of designing special sample holders plus modifications of the SEM chamber for the ease of EE characterization. Samples with different materials, densities, radii of curvatures, and lengths ranging respectively from 107-109 emitter/cm2, 5-300 nm, and 3*103-107 nm, are produced. The CBNs used are characterized by different structures and shapes that are defined by the monolayer carbon sheet takes. Cylindrical sheets are equivalent to nanotubes while graphene are flat sheets. Emitter's structures are varied by altering the critical growth parameters such as temperature, pressure and constituent materials. Enhancement of the FE properties, the design of an optimum emitter density ad reduction of the field screening effect is possible by selecting appropriate materials, synthesizing nanostructures with small radius (10 nm), high aspect ratio (greater than 1000), the ideal density where the inter-emitter distance is comparable to the emitter height, the cathodes' uniformity, the treatment of the emitting surface, and integrating triode arrangement. Initially, the thermionic Emission (TE) investigations of these nanostructures produce emission at an onset temperature of 500 C, current densities of 160 mA/cm2 at temperatures of 700-1200°c and predict the work function of the emitting materials. In addition, nanostructures can enhance the local electric field and increase the packing density to produce better EE properties. Then, FE investigations from different nanostructures showed that the small tip's diameter, high aspect ratio and tapered structures enhance emission through low turn-on fields (0.8 Vum), low threshold fields (3 V/um) and high current densities (520 mA/cm2). CCNTs having inter-emitters distance comparable to their average height contribute to the reduction of the field screening effect through large field enhancement factor ß (7000) and enhancement of the EE properties. EE experimental data along with its analysis demonstrate that CBNs have lower turn-on electric field, lower threshold fields, higher current density and higher field enhancement factor than those of microscopic metallic cathodes and oxide nanowires. Therefore, nanomaterial based emitters with their superior intrinsic properties based on the achieved EE results can be turned into potential EE point sources.

Mathematics and Physics for Nanotechnology

Mathematics and Physics for Nanotechnology Book
Author : Paolo Di Sia
Publisher : CRC Press
Release : 2019-02-05
ISBN : 0429648308
Language : En, Es, Fr & De

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Book Description :

Nanobiotechnology is a new interdisciplinary science with revolutionary perspectives arising from the fact that at nanosize the behaviour and characteristics of matter change with respect to ordinary macroscopic dimensions. Nanotechnology is a new way for producing and getting materials, structures and devices with greatly improved or completely new properties and functionalities. This book provides an introductory overview of the nanobiotechnology world along with a general technical framework about mathematical modelling through which we today study the phenomena of charge transport at the nanometer level. Although it is not a purely mathematics or physics book, it introduces the basic mathematical and physical notions that are important and necessary for theory and applications in nanobiotechnology. Therefore, it can be considered an extended formulary of basic and advanced concepts. It can be the starting point for discussions and insights and can be used for further developments in mathematical–physical modelling linked to the nanobiotechnology world. The book is dedicated to all those who follow their ideas in life and pursue their choices with determination and firmness, in a free and independent way.

Innovative Processing and Synthesis of Ceramics Glasses and Composites VIII

Innovative Processing and Synthesis of Ceramics  Glasses and Composites VIII Book
Author : Narottam P. Bansal,J. P. Singh,Hartmut Schneider
Publisher : John Wiley & Sons
Release : 2012-04-11
ISBN : 1118407830
Language : En, Es, Fr & De

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Book Description :

The latest developments in ceramic, glass, and composites processing and characterization are covered in this volume. Included are papers from industry, academia, and research laboratories on the advances in basic science and technology and how these can be used to address technological issues faced by the industry.

Design Modeling and Characterization of Bio Nanorobotic Systems

Design  Modeling and Characterization of Bio Nanorobotic Systems Book
Author : Mustapha Hamdi,Antoine Ferreira
Publisher : Springer Science & Business Media
Release : 2010-10-06
ISBN : 9789048131808
Language : En, Es, Fr & De

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Book Description :

Nanorobots represent a nanoscale device where proteins such as DNA, carbon nanotubes could act as motors, mechanical joints, transmission elements, or sensors. When these different components were assembled together they can form nanorobots with multi-degree-of-freedom, able to apply forces and manipulate objects in the nanoscale world. Design, Modeling and Characterization of Bio-Nanorobotic Systems investigates the design, assembly, simulation, and prototyping of biological and artificial molecular structures with the goal of implementing their internal nanoscale movements within nanorobotic systems in an optimized manner.