Download or read book Exploring Nanoscale Characterization of Low Dimensional Electronic Materials written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Nanoscale and Low Dimensional Materials and Devices written by Hilmi Ünlü and published by Springer Nature. This book was released on 2022-10-18 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes most recent progress in the properties, synthesis, characterization, modelling, and applications of nanomaterials and nanodevices. It begins with the review of the modelling of the structural, electronic and optical properties of low dimensional and nanoscale semiconductors, methodology of synthesis, and characterization of quantum dots and nanowires, with special attention towards Dirac materials, whose electrical conduction and sensing properties far exceed those of silicon-based materials, making them strong competitors. The contributed reviews presented in this book touch on broader issues associated with the environment, as well as energy production and storage, while highlighting important achievements in materials pertinent to the fields of biology and medicine, exhibiting an outstanding confluence of basic physical science with vital human endeavor. The subjects treated in this book are attractive to the broader readership of graduate and advanced undergraduate students in physics, chemistry, biology, and medicine, as well as in electrical, chemical, biological, and mechanical engineering. Seasoned researchers and experts from the semiconductor/device industry also greatly benefit from the book’s treatment of cutting-edge application studies.

Download or read book Single Layer Nanomaterials written by Ashley L Gibb and published by . This book was released on 2015 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of novel nanomaterials with tunable geometries and properties has transformed chemistry and physics in recent years. In particular, recent advances in the isolation of two-dimensional films have inspired the exploration and development of stable, self-supporting single layer systems. Most notably graphene, a single layer of hexagonal sp2 carbon, has attracted interest due to intriguing electronic, optical, and mechanical properties. Hexagonal boron nitride (h-BN) is a closely related two- dimensional material, isoelectronic with graphene but often exhibiting very different electronic characteristics. The production of these monolayer materials has revealed exciting new properties that arise due to constrained geometry at the nanoscale. This dissertation explores the atomic scale properties of low-dimensional hexagonal nanomaterials, with a particular focus on hexagonal boron nitride (h-BN), graphene, and related materials. The synthesis processes for hexagonal boron nitride, graphene, nanotubes and nanoribbons will be discussed, with a particular emphasis on chemical vapor deposition. By controlling the number of layers in two-dimensional materials, we can tune their properties for new applications. The fabrication, characterization, and functionalization of additional low-dimensional nanomaterials including nanoribbons, nanotubes, and the composite materials that contain them will also be introduced. In nanoscale systems, material properties are heavily influenced by atomic structure and defects. This dissertation will discuss the investigation of h-BN and graphene at the atomic scale, with a particular emphasis on defects studied by atomic resolution transmission electron microscopy. Further probing the dynamics of these atomic defects includes in situ imaging and heating from room temperature up to 1000°C. Under these extreme conditions, novel defect structures and dynamics have been observed. In the coming years, these materials will continue to revolutionize the way we think about nanoscale materials, and are likely to be implemented into a variety of new and emerging technologies.

Download or read book Micro and Nano Mechanical Testing of Materials and Devices written by Fuqian Yang and published by Springer Science & Business Media. This book was released on 2009-02-28 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscale and nanostructured materials have exhibited different physical properties from the corresponding macroscopic coarse-grained materials due to the size confinement. As a result, there is a need for new techniques to probe the mechanical behavior of advanced materials on the small scales. Micro and Nano Mechanical Testing of Materials and Devices presents the latest advances in the techniques of mechanical testing on the micro- and nanoscales, which are necessary for characterizing the mechanical properties of low-dimensional materials and structures. Written by a group of internationally recognized authors, this book covers topics such as: Techniques for micro- and nano- mechanical characterization; Size effects in the indentation plasticity; Characterization of low-dimensional structure including nanobelts and nanotubes; Characterization of smart materials, including piezoelectric materials and shape memory alloys; Analysis and modeling of the deformation of carbon-nanotubes. Micro and Nano Mechanical Testing of Materials and Devices is a valuable resource for engineers and researchers working in the area of mechanical characterization of advanced materials.

Download or read book Understanding and Engineering Electronic and Optoelectronic Properties of 2D Materials and Their Interfaces written by Youngwoo Son (Ph. D.) and published by . This book was released on 2016 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the pursuit of further miniaturization beyond Moore's law, tremendous effort has been dedicated to exploring the potential of two-dimensional (2D) materials for nanoscale electronic devices. 2D materials are a group of solid state materials that possess strong in-plane covalent bonds while individual atomic layers are held together by weak van der Waals (vdW) interactions. Hence, their bulk crystals can be exfoliated into few-layer or even atomically thin single-layers via micro-mechanical exfoliation techniques. These materials possess unique and exotic properties due to quantum confinement of importance to future electronics. However, many technical problems need to be solved to realize this goal. For example, as 2D material based devices become smaller down to the nanometer scale, the electrical contacts must also be reduced in scale which creates different characteristics from those of macroscopic counterparts. In addition, there are issues of reliability and stability with devices comprised of such materials. There is a need to understand the electronic and chemical properties of several interfaces that arise in such materials: metal-2D and 2D-2D junctions, for example. To this end, this thesis focuses on understanding nanoscale metal-2D semiconductor (SC) and 2D SC-2D SC junctions exploring: (1) electronic and optoelectronic behavior at the nanoscale junction of metal-MoS2 and dependence on the layer number (thickness), (2) realization of voltage selectable photodiodes based on a lateral in-plane MoS2-WSe2 heterojunctions, and (3) interfacial properties and (opto)electronic characteristics of a phosphorene-MoS2 vertical vdW p-n junction. The first part of this thesis explores the layer number dependent electrical characteristics of the MoS2-metal nanoscale junction using current imaging of MoS2 nanosheets consisting of regions of varying different thicknesses using conductive and photoconductive spectral atomic force microscopy (C- and PCS-AFM). The layer number dependence of the effective barrier was measured, by obtaining consecutive current images while changing bias voltages, showing it to be linear. At the same time, spatially resolved two-dimensional (2D) maps of local electrical properties are generated from simultaneously recorded local current-voltage (IV) data. Furthermore, the layer number dependent spectral photoresponse of MoS2 is investigated, which shows the highest response in single layer (1L) region. The photoresponse decreases for increasing layer number, but increases again between 4L and 1 OL due to increased light absorption. The photoresponse is also strongly dependent on the wavelength of the incident light, showing much higher currents for photon energies that are above the optical bandgap. The photoresponse in forward and reverse biases shows barrier symmetry for 1 L but asymmetry for 2, 3, and 4L, which further indicates a dominant role of the barrier on carrier transport at the junction. The second part of this thesis investigates the spatially resolved transverse electrical properties of the monolayer WSe2 -MoS2 lateral p-n heterostructures at their nanoscale junctions with metals both in the dark and under laser illumination. As in the first part of the thesis, C- and PCS-AFM, versatile tools to conveniently and efficiently interrogate layer-dependent electronic and optoelectronic characteristics in a MoS2 crystal containing regions of different thicknesses, which enables direct characterization and comparison of the different layer regions without the complexities associated with fabricating and testing of different individual field-effect transistor devices, are used for measurements. By performing current imaging using a PtIr-coated conductive tip on an ultrathin nanosheet that includes homogeneous crystals of WSe2 and MoS2 and a lateral junction region in between, many thousands of WSe2/MoS2/the junction-metal contact points form during imaging and directly compare their local properties at the same time under identical experimental conditions with the nanoscale spatial resolution. The third part of this thesis explores a new type of 2D vertical heterostructures that simultaneously possess desirable properties of constituent materials, paving the path for overcoming intrinsic shortcomings of each component material to be used as an active material in nanoelectronic devices. As a first example, a MoS 2-graphene vertical heterostructure is constructed and its charge transfer and photoluminescence (PL) at the interface are investigated. C-AFM and Raman spectroscopy show that there is a significant charge transfer between the two component materials. The PL intensity of monolayer MoS2 is noticeably quenched when in contact with a single layered graphene in comparison to that of a bare monolayer MoS2 crystal. Then, with the acquired understanding of the underlying physics at the 2D vdW heterointerfaces, the possibility of a black phosphorus (BP)-MoS2 vertical heterostructure as an ultrathin channel material for high-performance 2D (opto)electronic devices is studied. CVD-synthesized MoS2 and micromechanically exfoliated BP crystals are stacked together to form a vertical p-n heterostructure. Optical microscopy, AFM images, and Raman spectroscopy data show that the MoS2 thin films can be used as a passivation layer, protecting BP from deteriorating in ambient conditions for extended period of time or under an elevated temperature in an Ar environment. The IV characteristics of FET devices based on the vertical heterostuctures exhibit that the MoS2 layer has limited impact on superior carrier transport properties of the BP in the dark. Upon light illumination, photoconductivity of the BP-MoS2 heterostructure region increased compared to that of the bare BP region of the same flake, mainly due to the fact that a built-in electric field formed at the BP-MoS2 interface facilitates the dissociation of electron-hole pairs generated by light absorption.

Download or read book Characterization of Nanoscale Electronic Materials Using Novel Methods for Scan Probe Microscopy written by Eric M. Seabron and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Dimensional Nanoelectronic Devices written by Angsuman Sarkar and published by Apple Academic Press Incorporated USA. This book was released on 2022-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Providing cutting-edge research on nanoelectronics and photonic devices and its application in future integrated circuits, this state-of-the-art book tackles the challenges of the different detailed theoretical and analytical models of solving the problems of various nanodevices. The volume also explores from different angles the roles of material composition and choice of materials that now play the most critical role in determining outcomes of various low-dimensional nanoelectronic devices. The applications of those findings are extremely beneficial for the computing and telecommunication industries. Beginning with a solid theoretical background for every chapter, this volume covers the hottest areas of present-day electronic engineering. The continuous miniaturization of devices, components, and systems requires corresponding cutting-edge theoretical analysis supported by simulated findings before actual fabrication. That purpose is given maximum focus in this volume, which has interdisciplinary appeal, making it a comprehensive technological volume that deals with underlying aspects of physics, materials, structures in nano-regime, and the corresponding end-product in the form of device. The chapters provide up-to-the-minute theoretical and experimental works on nanoscale devices, with special emphasis on nano-MOSFET modeling and characterization and the latest pioneering research in the area of nanodevice fabrication. Equivalent circuit modeling is also analyzed for a few specific devices, leading to potential applications in various systems. The research provided in Low-Dimensional Nanoelectronic Devices: Theoretical Analysis and Cutting-Edge Research will help researchers and scientists in this area better address real-world problems and challenges in developing new low-dimensional nanoelectronic devices and will contribute toward building sustainable technology for the future"--

Download or read book Micro and Nano Mechanical Testing of Materials and Devices written by Fuqian Yang and published by Springer. This book was released on 2008-09-16 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscale and nanostructured materials have exhibited different physical properties from the corresponding macroscopic coarse-grained materials due to the size confinement. As a result, there is a need for new techniques to probe the mechanical behavior of advanced materials on the small scales. Micro and Nano Mechanical Testing of Materials and Devices presents the latest advances in the techniques of mechanical testing on the micro- and nanoscales, which are necessary for characterizing the mechanical properties of low-dimensional materials and structures. Written by a group of internationally recognized authors, this book covers topics such as: Techniques for micro- and nano- mechanical characterization; Size effects in the indentation plasticity; Characterization of low-dimensional structure including nanobelts and nanotubes; Characterization of smart materials, including piezoelectric materials and shape memory alloys; Analysis and modeling of the deformation of carbon-nanotubes. Micro and Nano Mechanical Testing of Materials and Devices is a valuable resource for engineers and researchers working in the area of mechanical characterization of advanced materials.

Download or read book Characterization of Nanostructures written by Sverre Myhra and published by CRC Press. This book was released on 2012-06-12 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The techniques and methods that can be applied to materials characterization on the microscale are numerous and well-established. Divided into two parts, Characterization of Nanostructures provides thumbnail sketches of the most widely used techniques and methods that apply to nanostructures, and discusses typical applications to single nanoscale o

Download or read book Nanoscale Thermoelectrics written by Xiaodong Wang and published by Springer Science & Business Media. This book was released on 2013-11-18 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the efficient utilization of energy resources and the minimization of environmental damage, thermoelectric materials can play an important role by converting waste heat into electricity directly. Nanostructured thermoelectric materials have received much attention recently due to the potential for enhanced properties associated with size effects and quantum confinement. Nanoscale Thermoelectrics describes the theory underlying these phenomena, as well as various thermoelectric materials and nanostructures such as carbon nanotubes, SiGe nanowires, and graphene nanoribbons. Chapters written by leading scientists throughout the world are intended to create a fundamental bridge between thermoelectrics and nanotechnology, and to stimulate readers' interest in developing new types of thermoelectric materials and devices for power generation and other applications. Nanoscale Thermoelectrics is both a comprehensive introduction to the field and a guide to further research, and can be recommended for Physics, Electrical Engineering, and Materials Science departments.

Download or read book Nanoelectronics and Materials Development written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanomaterial Characterization written by Ratna Tantra and published by John Wiley & Sons. This book was released on 2016-03-24 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterial Characterization Providing various properties of nanomaterials and the various methods available for their characterization Over the course of the last few decades, research activity on nanomaterials has gained considerable press coverage. The use of nanomaterials has meant that consumer products can be made lighter, stronger, esthetically more pleasing, and less expensive. The significant role of nanomaterials in improving the quality of life is clear, resulting in faster computers, cleaner energy production, target-driven pharmaceuticals, and better construction materials. It is not surprising, therefore, that nanomaterial research has really taken off, spanning across different scientific disciplines from material science to nanotoxicology. A critical part of any nanomaterial research, however, is the need to characterize physicochemical properties of the nanomaterials, which is not a trivial matter. Nanomaterial Characterization: An Introduction is dedicated to understanding the key physicochemical properties and their characterization methods. Each chapter begins by giving an overview of the topic before a case study is presented. The purpose of the case study is to demonstrate how the reader may make use of the background information presented to them and show how this can be translated to solve a nanospecific application scenario. Thus, it will be useful for researchers in helping them design experimental investigations. The book begins with a general overview of the subject, thus giving the reader a solid foundation to nanomaterial characterization. Nanomaterial Characterization: An Introduction features: Nanomaterial synthesis and reference nananomaterials Key physicochemical properties and their measurements including particle size distribution by number, solubility, surface area, surface chemistry, mechanical/tribological properties, and dustiness Scanning tunneling microscopy methods operated under extreme conditions Novel strategy for biological characterization of nanomaterial methods Methods to handle and visualize multidimensional nanomaterial characterization data The book is written in such a way that both students and experts in other fields of science will find the information useful, whether they are in academia, industry, or regulation, or those whose analytical background may be limited.There is also an extensive list of references associated with every chapter to encourage further reading.

Download or read book Low dimensional Transition Metal Chalcogenides for Electronics Applications written by Matthew Abbott Bloodgood and published by . This book was released on 2018 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemistry and structure of low-dimensional materials are an important consideration for nanoscale, electronics applications. The oxidative chemistry of 2-dimensional 1T-TiSe2 and 1T-TaSe2 is explored in chapter II. Oxidation onset temperature, oxide layer thickness, and polymorph transitions associated with prolonged, ambient storage are discussed. The oxidative stability of 1T-TiSe2 was found to be lower than that of 1T-TaSe2 with each material reaching full oxidation at 400 and 600 ℗ʻC after 1 h, respectively. A phase transition in TaSe2 after prolonged storage in ambient conditions inspired further study of polymorphism. Investigation of the polymorphic, transitional pathways of 1T-TaSe2 in chapter III revealed two previously unreported transitions. The first is a transition to the room temperature stable phase from 3R to 2H-TaSe2, followed by a transition to the metastable 4H(x) polymorphs (x = a or c). Polymorphism investigation is continued with the study of the NbS3 system described in chapter IV. Two newly established polymorphs of NbS3, along with high-resolution characterization, are reported. These studies are integral advances in knowledge for the advancement of nanoscale electronics.

Download or read book Proceedings of the Symposium on Characterization and Mechanical Reliability of Advanced Electronic Materials at Nanoscale 2003 ASME Mechanics and Materials Conference written by Symposium on Characterization and Mechanical Reliability of Advanced Electronic Materials at Nanoscale and published by . This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nanoelectronics Quantum Engineering of Low Dimensional Nanoensemble written by Vijay K. Arora and published by Springer. This book was released on 2015-07-05 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive introduction to the concepts of nano electronic transport and applies them to the design, development, characterization and performance evaluation of nano scale transistors. The presentation follows a bottom-up approach, from atomic structures to quantum wells, forming the crux of nano electronics. Coverage focuses on the quantum-mechanical and high-field effects that have impact on the design of optoelectronic devices and other micro-circuits. Concepts are demonstrated with numerous applications to nano layers, nanowires, graphene and carbon nanotubes.

Download or read book Toward a New Dimension written by Anne Marcovich and published by OUP Oxford. This book was released on 2014-08-29 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the course of the last thirty years, the investigation of objects at the nano scale has rocketed. Nanoscale scientific research has not only powerfully affected the amount and orientation of knowledge, it has perhaps even more significantly redirected the ways in which much research work is carried out, changed scientists' methodology and reasoning processes, and influenced aspects of the structure of career trajectory and the functioning of scientific disciplines. This book identifies key historical moments and episodes in the birth and evolution of nanoscience, discusses the novel repertory of epistemological concerns of practitioners, and signals sociological propensities. As Galileo's telescope explored the moon's surface four hundred years ago, nano instrumentation now makes it possible to see the surface of single molecules. Moreover, practitioners are able to manipulate individual atoms and molecules at will to produce pre-designed synthetic materials, non-existent in nature. The combinatorial of heightened observational capacity and the tailoring of synthetic artificial materials exhibiting hitherto novel physical properties has widened and transformed the worlds of scientific knowledge and technical artefact. This book invites the question: to what extent does nanoscale scientific research constitute a kind of 'scientific revolution'?

Download or read book Nanoelectronics Physics Materials and Devices written by Angsuman Sarkar and published by Elsevier. This book was released on 2023-01-15 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoelectronics: Physics, Materials and Devices addresses the concepts involved in the exploration of research on nanoscale electronics and photonic devices and their application in next-generation integrated circuits (ICs). The book presents a detailed discussion on the field of nanoscale electronic and photonic devices, as well as the most recent techniques for the modeling and simulation of these devices. It provides an in-depth analysis of theoretical frameworks, the fundamental physics underlying device operation, computational modeling, simulation methods, and circuit applications of nanoscale devices. The purpose of this book is to provide a desirable balance between basic background and concepts to improve device performance. In this book, both qualitative and quantitative approaches are considered to analyze and explore the contributions made by various researchers actively engaged in nanoscale device research. The book's main motivation is to help solve the challenges of analyzing and exploring the electrical behaviors of contemporary nanoscale device technologies. It purposefully builds the principles of nano electronic devices gradually, invigorating those of micro electronic devices. Addresses the conceptual, architectural, and design challenges faced by emerging nanoscale devices as a replacement of conventional MOSFET Serves as a guide to researchers by suggesting research directions and potential applications Explains the use of Technology Computer-Aided Design software (TCAD) to produce numerical simulations of nanoscale devices