Electrically Based Microstructural Characterization PDF Download
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Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 392
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Book Description
Author:
Publisher:
ISBN:
Category : Materials
Languages : en
Pages : 392
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Book Description
Author: Rosario A. Gerhardt
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 394
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Book Description
Fifty papers from the December 1997 symposium which covered the application of electrical measurements for the detection of microstructural features at all length scales. In addition to the topics covered in the first symposium--dc and ad resistivity measurements, impedance/admittance analysis, multiplane analysis and various other methods such as electron energy loss spectroscopy, ellipsometry, and capacitance voltage measurements--there are several papers which combine electrical measurements with STM, AFM, NSOM and electroluminescence techniques so that more localized information may be obtainable. Annotation copyrighted by Book News, Inc., Portland, OR
Author: Rosario A. Gerhardt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 406
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Book Description
Among the topics of invited papers are the electrical characterization of inhomogeneous and heterogeneous systems with microstructural periodicity, impedance spectroscopy in ferromagnetic materials, the materials characterization and device performance of a CMR- ferroelectric heterostructure, and broadband dielectric spectroscopic investigations into the influence of confinement on the molecular reorientational dynamics of liquid crystals. Many papers besides the 48 selected here are expected to appear in various scientific journals. Annotation copyrighted by Book News, Inc., Portland, OR
Author: Mohammad A. Alim
Publisher: John Wiley & Sons
ISBN: 1119185408
Category : Science
Languages : en
Pages : 428
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Book Description
This book emphasizes the use of four complex plane formalisms (impedance, admittance, complex capacitance, and modulus) in a simultaneous fashion. The purpose of employing these complex planes for handling semicircular relaxation using a single set of measured impedance data (ac small-signal electrical data) is highly underscored. The current literature demonstrates the importance of template version of impedance plot whereas this book reflects the advantage of using concurrent four complex plane plots for the same data. This approach allows extraction of a meaningful equivalent circuit model attributing to possible interpretations via potential polarizations and operative mechanisms for the investigated material system. Thus, this book supersedes the limitations of the impedance plot, and intends to serve a broader community of scientific and technical professionals better for their solid and liquid systems. This book addresses the following highlighted contents for the measured data but not limited to the:- (1) Lumped Parameter/Complex Plane Analysis (LP/CPA) in conjunction with the Bode plots; (2) Equivalent circuit model (ECM) derived from the LP/CPA; (3) Underlying Operative Mechanisms along with the possible interpretations; (4) Ideal (Debye) and non-ideal (non-Debye) relaxations; and (5) Data-Handling Criteria (DHC) using Complex Nonlinear Least Squares (CNLS) fitting procedures.
Author: K. M. Nair
Publisher: John Wiley & Sons
ISBN: 1118406761
Category : Technology & Engineering
Languages : en
Pages : 496
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Book Description
This volume contains a collection of 40 papers from two symposia: Advanced Dielectric Materials and Multilayer Electronic Devices and High Strain Piezoelectric Materials, Devices and Applications. Topics include fundamental and historical perspectives of dielectric materials; relaxor materials and devices; high strain piezoelectric devices; advanced aspects of powder preparation, characterization, and properties; thin films; materials for low and high frequency applications; processing-structure-property-relationships; and future applications. Proceedings of the symposium held at the 105th Annual Meeting of The American Ceramic Society, April 27-30, 2003, in Nashville, Tennessee; Ceramic Transactions, Volume 150.
Author: Andrzej Więckowski
Publisher: The Electrochemical Society
ISBN: 9781566771603
Category : Science
Languages : en
Pages : 504
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Book Description
Author:
Publisher:
ISBN:
Category : Measurement
Languages : en
Pages : 496
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Book Description
Author: Reza Taherian
Publisher: William Andrew
ISBN: 012812542X
Category : Technology & Engineering
Languages : en
Pages : 434
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Book Description
Electrical Conductivity in Polymer-Based Composites: Experiments, Modelling and Applications offers detailed information on all aspects of conductive composites. These composites offer many benefits in comparison to traditional conductive materials, and have a broad range of applications, including electronic packaging, capacitors, thermistors, fuel cell devices, dielectrics, piezoelectric functions and ferroelectric memories. Sections cover the theory of electrical conductivity and the different categories of conductive composites, describing percolation threshold, tunneling effect and other phenomena in the field. Subsequent chapters present thorough coverage of the key phases in the development and use of conductive composites, including manufacturing methods, external parameters, applications, modelling and testing methods. This is an essential source of information for materials scientists and engineers working in the fields of polymer technology, processing and engineering, enabling them to improve manufacture and testing methods, and to benefit fully from applications. The book also provides industrial and academic researchers with a comprehensive and up-to-date understanding of conductive composites and related issues. - Explains the methods used in the manufacture and testing of conductive composites, and in the modeling of electrical conductivity - Contains specialized information on the full range of applications for conductive composites, including conductive adhesives or pastes - Brings scientists, engineers and researchers up-to-date with the latest advances in the field
Author: Ratnanabha Sain
Publisher: Stanford University
ISBN:
Category :
Languages : en
Pages : 224
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Book Description
This dissertation describes numerical experiments quantifying the influence of pore-scale heterogeneities and their evolution on macroscopic elastic, electrical and transport properties of porous media. We design, implement and test a computational recipe to construct granular packs and consolidated microstructures replicating geological processes and to estimate the link between process-to-property trends. This computational recipe includes five constructors: a Granular Dynamics (GD) simulation, an Event Driven Molecular Dynamics (EDMD) simulation and three computational diagenetic schemes; and four property estimators based on GD for elastic, finite-elements (FE) for elastic and electrical conductivity, and Lattice-Boltzmann method (LBM) for flow property simulations. Our implementation of GD simulation is capable of constructing realistic, frictional, jammed sphere packs under isotropic and uniaxial stress states. The link between microstructural properties in these packs, like porosity and coordination number (average number of contacts per grain), and stress states (due to compaction) is non-unique and depends on assemblage process and inter-granular friction. Stable jammed packs having similar internal stress and coordination number (CN) can exist at a range of porosities (38-42%) based on how fast they are assembled or compressed. Similarly, lower inter-grain friction during assemblage creates packs with higher coordination number and lower porosity at the same stress. Further, the heterogeneities in coordination number, spatial arrangement of contacts, the contact forces and internal stresses evolve with compaction non-linearly. These pore-scale heterogeneities impact effective elastic moduli, calculated by using infinitesimal perturbation method. Simulated stress-strain relationships and pressure-dependent elastic moduli for random granular packs show excellent match with laboratory experiments, unlike theoretical models based on Effective Medium Theory (EMT). We elaborately discuss the reasons why Effective Medium Theory (EMT) fails to correctly predict pressure-dependent elastic moduli, stress-strain relationships and stress-ratios (in uniaxial compaction) of granular packs or unconsolidated sediments. We specifically show that the unrealistic assumption of homogeneity in disordered packs and subsequent use of continuum elasticity-based homogeneous strain theory creates non-physical packs, which is why EMT fails. In the absence of a rigorous theory which can quantitatively account for heterogeneity in random granular packs, we propose relaxation corrections to amend EMT elastic moduli predictions. These pressure-dependent and compaction-dependent (isotropic or uniaxial) correction factors are rigorously estimated using GD simulation without non-physical approximations. Further, these correction factors heuristically represent the pressure-dependent heterogeneity and are also applicable for amending predictions of theoretical cementation models, which are conventionally used for granular packs. For predicting stress-ratios in uniaxial compaction scenario, we show the inappropriateness of linear elasticity-based equations, which use elastic constants only and do not account for dissipative losses like grain sliding. We further implement and test a computational recipe to construct consolidated microstructures based on different geological scenarios, like sorting, compaction, cementation types and cement materials. Our diagenetic trends of elastic, electrical and transport properties show excellent match with laboratory experiments on core plugs. This shows the feasibility of implementing a full-scale computational-rock-physics-based laboratory to construct and estimate properties based on geological processes. However, the elastic property estimator (FE simulation) shows limitations of finite resolution while computing elastic properties of unconsolidated sediments and fluid-saturated microstructures.
Author: Lynnette Madsen
Publisher: John Wiley & Sons
ISBN: 1118733711
Category : Technology & Engineering
Languages : en
Pages : 642
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Book Description
Presents a diverse perspective of successful, inspirational and progressive women in science and engineering Women of today from 29 countries provide overviews of their successful careers, the challenges they faced, and offer advice. They have lived in the same era, and perhaps also the same environment as you. Successful Women Ceramic and Glass Scientists and Engineers: 100 Inspirational Profiles features women born in the 1920’s to 1970’s. Reflecting a diversity of backgrounds and different sectors of the workforce, their profiles include: ̶- Affiliation, points of contact, accomplishments (most-cited publication, most prestigious recognitions/awards, etc.), personal insight on her best career moment ̶ Brief biography, highlights of her successes, images from her career ̶ Personal commentary on her own career and pointers for younger scientists building careers This book provides novelty, inspiration, motivation and a bright perspective for the next generation of scientists and engineers seeking exciting and fulfilling careers. This book will be invaluable to mentors/professors, students and prospective students in science and engineering, scholars of gender studies, and scientific and engineering societies and organizations. “Lynnette Madsen has done a great service in writing this book, not just for women, but for society at large, because in the twenty-first century, we can no longer underutilize or ignore that half of the best." ̶ Rita Colwell, Director, United States National Science Foundation 1998-2004, Distinguished University Professor, University of Maryland, College Park, and Johns Hopkins Bloomberg School of Public Health "The book shows that opportunities in science exist in many countries around the world. Reading about the ways that took those women to their current positions is an exciting adventure." ̶ Yury Gogotsi, Professor, Drexel University "In addition to chronicling careers of great scientists, this book presents an array of career paths to young women and men -- a must read." ̶ Dr. Rainer Waser, Professor, Aachen University, Germany “It is inspiring to see that the successful women highlighted in this work are approaching life with courage and joy; they are changing paradigms and serving as voices for young girls. They are passionate about making a difference and breaking barriers; they are classy and fabulous." ̶ Dr. Olivia Graeve, Professor, University of California, San Diego
