X Ray Far Field Ptychotomography At I13 1 Diamond Light Source
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X Ray Far Field Ptychotomography At I13 1 Diamond Light Source
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Author : Venkata Sree Charan Kuppili
language : en
Publisher:
Release Date : 2019
X Ray Far Field Ptychotomography At I13 1 Diamond Light Source written by Venkata Sree Charan Kuppili and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
X-ray far-field ptychography has emerged as an important imaging technique in order to obtain high resolution, complex transmission maps of nanostructures and nanomaterials. Ptychography achieves this by collecting X-ray far-field diffraction patterns at pre-defined scan positions which are later processed using iterative phase-retrieval algorithms. It has been demonstrated that features as small as 10 nm could be resolved using this technique. Ptychography can be combined with tomography in order to obtain the same in three dimensions. Known as ptychographic-nanoCT or ptychotomography, has proved to be an effective tool to image nanomaterials in three dimensions with resolutions as high as 16 nm. Ptychotomography played a crucial role in imaging nanostructured materials such as egg shells, solar cells and catalysts. This thesis will document various theoretical, experimental and algorithmic factors involved in carrying out ptychotomography. This work will demonstrate the feasibility of ptychography and its allied tomographic imaging technique at I13-1, Diamond Light Source UK. Along with this, this work will also demonstrate two novel 3D imaging modalities namely partially local ptychotomography and limited angle ptychotomography. The first two chapters will introduce theoretical concepts involving basic properties of X-rays with special emphasis on coherence. Synchrotron sources as an extended coherent source will be motivated. Ptychography will be explained next, ptychography will be motivated as a scanning variant of coherent diffraction imaging technique. This chapter will conclude with introduction to tomography along with the details of combining ptychography with tomography. The next chapter will document the methodology of conducting ptychotomography at a synchrotron source with special emphasis on I13-1 Diamond Light Source. Instrumentation available at I13-1 will be documented, with commentary on the influence of the available instrumentation on the quality of ptychographic and tomographic imaging. This chapter will conclude with listing author"s contributions to I13-1. The results chapter will encompass four separate sections, the first will discuss various practical aspects of ptychography with emphasis on obtaining optimum ptychographic reconstructions. The next section will talk about partially local ptychotomography along with motivating ptychography as a tool for beamline assessment and characterisation. The section on limited angle ptychotomography will introduce novel imaging modalities to image extended samples from limited angular views. This chapter will conclude with the section listing author"s contributions to projects involving other beamlines. This work will conclude with a discussion on the necessary steps needed to optimise ptychography, tomography at I13-1 along with discussing the existing limitations of ptychotomography and possible avenues for extending and improving this technique. Appendix sections will provide supporting information pertaining to various sections discussed through out this work.
Foams
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Author : Isabelle Cantat
language : en
Publisher: Oxford University Press
Release Date : 2013-07-11
Foams written by Isabelle Cantat and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-11 with Science categories.
In this book, beginners, engineers, and researchers entering the field can easily find clear, up-to-date answers to their questions regarding the physical and physico-chemical properties of aqueous foams, as well as their numerous industrial applications, explained using current knowledge of their structure, their stability, and their rheology.
Low Density Cellular Plastics
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Author : N.C. Hilyard
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Low Density Cellular Plastics written by N.C. Hilyard and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Foams are gas filled integral structures in which the gas is finely dispersed throughout acontinuouslyconnected solid phase. The bulk density is usually substantially lower than that of the solid component, and for the foams which form the focus for this book the volume fraction of the gas phase is considerably greater than 0.5 and in most instances in excess of 0.9. Many ofthe materials encountered in every day experience, such as bread, plants and trees, structural materials for buildings, comfort materials for domestic and automotive seating, shock absorbers or car bumpers and materials for noise control, have one thing in common - the cellular nature of their physical structure. Whyare thesestructuressoimportantin the naturaland man-made world? The reasons are both technical and commercial. From a technical viewpoint cellular materials offer: 1. high specific stiffness and strength - making them suitable for structural applications; 2. closeto idealenergymanagement - hencetheir useinthermalandacoustic insulation, vibration damping, acoustic absorption and shock mitigation; and 3. comfort - hence their use for domestic and automotive seating.
Handbook Of Polymeric Foams And Foam Technology
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Author : Daniel Klempner
language : en
Publisher:
Release Date : 2004
Handbook Of Polymeric Foams And Foam Technology written by Daniel Klempner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Schaumkunststoff categories.
Cellular Polymers
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Author :
language : en
Publisher: iSmithers Rapra Publishing
Release Date : 1993
Cellular Polymers written by and has been published by iSmithers Rapra Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Foamed materials categories.
Nonlinear Ultrasonic And Vibro Acoustical Techniques For Nondestructive Evaluation
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Author : Tribikram Kundu
language : en
Publisher: Springer
Release Date : 2018-10-19
Nonlinear Ultrasonic And Vibro Acoustical Techniques For Nondestructive Evaluation written by Tribikram Kundu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-19 with Technology & Engineering categories.
This multi-contributed volume provides a practical, applications-focused introduction to nonlinear acoustical techniques for nondestructive evaluation. Compared to linear techniques, nonlinear acoustical/ultrasonic techniques are much more sensitive to micro-cracks and other types of small distributed damages. Most materials and structures exhibit nonlinear behavior due to the formation of dislocation and micro-cracks from fatigue or other types of repetitive loadings well before detectable macro-cracks are formed. Nondestructive evaluation (NDE) tools that have been developed based on nonlinear acoustical techniques are capable of providing early warnings about the possibility of structural failure before detectable macro-cracks are formed. This book presents the full range of nonlinear acoustical techniques used today for NDE. The expert chapters cover both theoretical and experimental aspects, but always with an eye towards applications. Unlike other titles currently available, which treat nonlinearity as a physics problem and focus on different analytical derivations, the present volume emphasizes NDE applications over detailed analytical derivations. The introductory chapter presents the fundamentals in a manner accessible to anyone with an undergraduate degree in Engineering or Physics and equips the reader with all of the necessary background to understand the remaining chapters. This self-contained volume will be a valuable reference to graduate students through practising researchers in Engineering, Materials Science, and Physics. Represents the first book on nonlinear acoustical techniques for NDE applications Emphasizes applications of nonlinear acoustical techniques Presents the fundamental physics and mathematics behind nonlinear acoustical phenomenon in a simple, easily understood manner Covers a variety of popular NDE techniques based on nonlinear acoustics in a single volume
The Emergence Of Extremism
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Author : Rob Faure Walker
language : en
Publisher: Bloomsbury Publishing
Release Date : 2021-10-21
The Emergence Of Extremism written by Rob Faure Walker and has been published by Bloomsbury Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-21 with Language Arts & Disciplines categories.
The idea that the expression of radical beliefs is a predictor to future acts of political violence has been a central tenet of counter-extremism over the last two decades. Not only has this imposed a duty upon doctors, lecturers and teachers to inform on the radical beliefs of their patients and students but, as this book argues, it is also a fundamentally flawed concept. Informed by his own experience with the UK's Prevent programme while teaching in a Muslim community, Rob Faure Walker explores the linguistic emergence of 'extremism' in political discourse and the potentially damaging generative effect of this language. Taking a new approach which combines critical discourse analysis with critical realism, this book shows how the fear of being labelled as an 'extremist' has resulted in counter-terrorism strategies which actually undermine moderating mechanisms in a democracy. Analysing the generative mechanisms by which the language of counter-extremism might actually promote violence, Faure Walker explains how understanding the potentially oppressive properties of language can help us transcend them. The result is an imminent critique of the most pernicious aspects of the global War on Terror, those that are embedded in our everyday language and political discourse. Drawing on the author's own successful lobbying activities against counter-extremism, this book presents a model for how discourse analysis and critical realism can and should engage with the political and how this will affect meaningful change.
Land People And Power In Early Medieval Wales
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Author : Rhiannon Comeau
language : en
Publisher:
Release Date : 2020-11-26
Land People And Power In Early Medieval Wales written by Rhiannon Comeau and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-26 with Social Science categories.
This study examines the structure of the early medieval Welsh landscape. Using a cantref (hundred) in south-west Wales as a case study, it draws on a multidisciplinary, comparative analysis to overcome the limits imposed by restricted material culture survival and limited written sources. It examines the patterns of power and habitual activity that defined spaces and structured lives, and considers the temporal relationships, both seasonal and longue durée, that shaped them. Four key findings are presented. Firstly, that key areas of early medieval life - agriculture, tribute-payment, legal processes and hunting - were structured by a longstanding seasonal patterning that is preserved in twelfth- and thirteenth-century Welsh law, church and well dedications and fair dates. Secondly it presents, at cantref level, the first systematic survey of assembly site evidence in Wales, and sets it in comparative context. Thirdly, it demonstrates that, though poor material culture preservation and limited written records have hitherto restricted identification and characterisation of key locations in the early medieval Welsh landscape, a multidisciplinary dataset allows effective identification of focal zones through indicators known from other areas of north-west Europe. Fourthly, the widely-used 'multiple estate model' is found to be an inadequate descriptor of the early medieval Welsh landscape. An alternative approach is proposed. Methodologically, it demonstrates the value of a multidisciplinary approach, especially the systematic use of place-names which is novel in a Welsh context. It also provides key resources for other researchers by geolocating pre-1700 place-names from a previously published survey; creating GIS resources (polygons and geolocated databases) from the 1840s tithe map and schedules for parishes in its detailed case study areas; and providing a geolocated database of 16th-century demesne and Welsh-law landholdings in the cantref.
Proceedings Of The Future Technologies Conference Ftc 2021 Volume 1
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Author : Kohei Arai
language : en
Publisher: Springer Nature
Release Date : 2021-10-23
Proceedings Of The Future Technologies Conference Ftc 2021 Volume 1 written by Kohei Arai and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-10-23 with Technology & Engineering categories.
This book covers a wide range of important topics including but not limited to Technology Trends, Computing, Artificial Intelligence, Machine Vision, Communication, Security, e-Learning, and Ambient Intelligence and their applications to the real world. The sixth Future Technologies Conference 2021 was organized virtually and received a total of 531 submissions from academic pioneering researchers, scientists, industrial engineers, and students from all over the world.. After a double-blind peer review process, 191 submissions have been selected to be included in these proceedings. One of the meaningful and valuable dimensions of this conference is the way it brings together a large group of technology geniuses in one venue to not only present breakthrough research in future technologies, but also to promote discussions and debate of relevant issues, challenges, opportunities and research findings. We hope that readers find the book interesting, exciting, and inspiring; it provides the state-of-the-art intelligent methods and techniques for solving real-world problems along with a vision of the future research.
Uv Optical Ir Space Telescopes And Instruments Innovative Technologies And Concepts Ix
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Author :
language : en
Publisher:
Release Date : 2019
Uv Optical Ir Space Telescopes And Instruments Innovative Technologies And Concepts Ix written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.