High Density Data Storage

High Density Data Storage

Author: Yanlin Song

Publisher: World Scientific

Published: 2009

Total Pages: 272

ISBN-13: 9812834699

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The explosive increase in information and the miniaturization of electronic devices demand new recording technologies and materials that combine high density, fast response, long retention time and rewriting capability. As predicted, the current silicon-based computer circuits are reaching their physical limits. Further miniaturization of the electronic components and increase in data storage density are vital for the next generation of IT equipment such as ultra high-speed mobile computing, communication devices and sophisticated sensors. This original book presents a comprehensive introduction to the significant research achievements on high-density data storage from the aspects of recording mechanisms, materials and fabrication technologies, which are promising for overcoming the physical limits of current data storage systems. The book serves as an useful guide for the development of optimized materials, technologies and device structures for future information storage, and will lead readers to the fascinating world of information technology in the future.


Multilayer Thin Films

Multilayer Thin Films

Author: Sukumar Basu

Publisher: BoD – Books on Demand

Published: 2020-01-15

Total Pages: 274

ISBN-13: 1789854377

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This book, "Multilayer Thin Films-Versatile Applications for Materials Engineering", includes thirteen chapters related to the preparations, characterizations, and applications in the modern research of materials engineering. The evaluation of nanomaterials in the form of different shapes, sizes, and volumes needed for utilization in different kinds of gadgets and devices. Since the recently developed two-dimensional carbon materials are proving to be immensely important for new configurations in the miniature scale in the modern technology, it is imperative to innovate various atomic and molecular arrangements for the modifications of structural properties. Of late, graphene and graphene-related derivatives have been proven as the most versatile two-dimensional nanomaterials with superb mechanical, electrical, electronic, optical, and magnetic properties. To understand the in-depth technology, an effort has been made to explain the basics of nano dimensional materials. The importance of nano particles in various aspects of nano technology is clearly indicated. There is more than one chapter describing the use of nanomaterials as sensors. In this volume, an effort has been made to clarify the use of such materials from non-conductor to highly conducting species. It is expected that this book will be useful to the postgraduate and research students as this is a multidisciplinary subject.


Nanoscale Energy Transport and Conversion

Nanoscale Energy Transport and Conversion

Author: Gang Chen

Publisher: Oxford University Press

Published: 2005-03-03

Total Pages: 570

ISBN-13: 9780199774685

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This is a graduate level textbook in nanoscale heat transfer and energy conversion that can also be used as a reference for researchers in the developing field of nanoengineering. It provides a comprehensive overview of microscale heat transfer, focusing on thermal energy storage and transport. Chen broadens the readership by incorporating results from related disciplines, from the point of view of thermal energy storage and transport, and presents related topics on the transport of electrons, phonons, photons, and molecules. This book is part of the MIT-Pappalardo Series in Mechanical Engineering.


Measurement of Thermal Conductivity of Gold Nanofilms and Nanowires

Measurement of Thermal Conductivity of Gold Nanofilms and Nanowires

Author: Joyce Harrington Anderson

Publisher:

Published: 2020

Total Pages: 308

ISBN-13:

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Achieving complex integrated circuits and devices, through miniaturization into the nanoscale, increasingly relies on understanding the thermal properties of the materials used in these components. Conductors at the nanoscale have properties that differ substantially from their bulk or thin film counterparts. Nanostructured gold, for example, is currently being used in a wide range of applications, including interconnects, solar cells, flexible screens, detection of cancerous cells, and energy storage. Thermal management on the nanoscale has posed significant industry challenges that directly impact the maximum current and power, speed, reliability, and lifetime of devices where so-called self-heating is a factor. General factors at reduced scale include increasing resistivity, reduction in thermal conductivity (kappa), and the desired increasing device density per unit area. Despite the prominent role of metallic nanostructures in current and future technologies, large gaps exist in understanding the influence of "size effects" on thermal characteristics at small dimensions. Prior work attempted to simulate the thermal characteristics of nanoscale materials to account for these size effects, but often fall short due to the lack of experimental verification needed for informing and testing the models based, primarily, on the Boltzmann transport equation. This dissertation focuses on development and test of a method used to generate direct experimental data on thermal conductivity for nanofilms and nanowires. The approach is applied to gold with thickness dimensions of 50 and 100 nm. The lateral dimensions studied range from 74 nm to 720 nm, thereby spanning the micro to nano regimes. The main components of this research are the fabrication and measurement methodology for direct studies of thermal conductivity at the nanoscale. Both design and data analysis rely on extensive finite element analysis simulations. The experimental results include an observed decrease in thermal conductivity as film thickness is reduced, for any lateral dimension studied. At large lateral width, corresponding to the microscale, thermal conductivity values are 280 and 200 W/mK for thicknesses of 100 and 50 nm, respectively. These are to be compared with the accepted value of 317 W/mK for thermal conductivity of bulk gold. In addition, as the latter is reduced, for either thickness, a characteristic decrease is observed beginning at ~300 nm width. For the smallest nanowire investigated, 50 nm in thickness and 74 nm in width, a value of thermal conductivity = 56 W/mK is obtained. The trends obtained are supported by data available in the literature. The decrease in thermal conductivity with diminishing size are also consistent with theoretical calculations for gold, thereby validating the reported Boltzmann transport equation approach.


Comprehensive Nanoscience and Technology

Comprehensive Nanoscience and Technology

Author:

Publisher: Academic Press

Published: 2010-10-29

Total Pages: 2785

ISBN-13: 0123743966

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From the Introduction: Nanotechnology and its underpinning sciences are progressing with unprecedented rapidity. With technical advances in a variety of nanoscale fabrication and manipulation technologies, the whole topical area is maturing into a vibrant field that is generating new scientific research and a burgeoning range of commercial applications, with an annual market already at the trillion dollar threshold. The means of fabricating and controlling matter on the nanoscale afford striking and unprecedented opportunities to exploit a variety of exotic phenomena such as quantum, nanophotonic and nanoelectromechanical effects. Moreover, researchers are elucidating new perspectives on the electronic and optical properties of matter because of the way that nanoscale materials bridge the disparate theories describing molecules and bulk matter. Surface phenomena also gain a greatly increased significance; even the well-known link between chemical reactivity and surface-to-volume ratio becomes a major determinant of physical properties, when it operates over nanoscale dimensions. Against this background, this comprehensive work is designed to address the need for a dynamic, authoritative and readily accessible source of information, capturing the full breadth of the subject. Its six volumes, covering a broad spectrum of disciplines including material sciences, chemistry, physics and life sciences, have been written and edited by an outstanding team of international experts. Addressing an extensive, cross-disciplinary audience, each chapter aims to cover key developments in a scholarly, readable and critical style, providing an indispensible first point of entry to the literature for scientists and technologists from interdisciplinary fields. The work focuses on the major classes of nanomaterials in terms of their synthesis, structure and applications, reviewing nanomaterials and their respective technologies in well-structured and comprehensive articles with extensive cross-references. It has been a constant surprise and delight to have found, amongst the rapidly escalating number who work in nanoscience and technology, so many highly esteemed authors willing to contribute. Sharing our anticipation of a major addition to the literature, they have also captured the excitement of the field itself in each carefully crafted chapter. Along with our painstaking and meticulous volume editors, full credit for the success of this enterprise must go to these individuals, together with our thanks for (largely) adhering to the given deadlines. Lastly, we record our sincere thanks and appreciation for the skills and professionalism of the numerous Elsevier staff who have been involved in this project, notably Fiona Geraghty, Megan Palmer and Greg Harris, and especially Donna De Weerd-Wilson who has steered it through from its inception. We have greatly enjoyed working with them all, as we have with each other.


Nanomedical Device and Systems Design

Nanomedical Device and Systems Design

Author: Frank Boehm

Publisher: CRC Press

Published: 2016-04-19

Total Pages: 746

ISBN-13: 1439863237

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Nanomedical Device and Systems Design: Challenges, Possibilities, Visions serves as a preliminary guide toward the inspiration of specific investigative pathways that may lead to meaningful discourse and significant advances in nanomedicine/nanotechnology. This volume considers the potential of future innovations that will involve nanomedical devic