Download or read book Magnetic Nanostructures Patterned by Block Copolymer Lithography written by Filip Ilievski and published by . This book was released on 2008 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this research was twofold: understanding the methods of patterning magnetic films using self-assembled block copolymer masks and examining the magnetic reversal mechanisms of as deposited and patterned magnetic films. Ti / Co 66 at. % Cr 22 at. % Pt 12 at. % (CoCrPt) films with perpendicular magnetic anisotropy were deposited on silicon wafers by UHV sputtering. Ti was used as an adhesion layer and texture promoter so that the easy magnetic axis of Co is aligned perpendicular to the sample plane. Magnetic reversal of Ti/CoCrPt films and Ti/CoCrPt/Ti/CoCrPt pseudo spin valve films is a domain nucleation and growth process with a slow time-dependent magnetization reversal which was attributed to growth of reverse domains. The films were patterned into nanosized islands by block copolymer lithography using self assembled polystyrene-polyferrocenyldimethylsilane (PS-PFS) as a mask. The islands reverse their magnetization in a coherent and independent fashion (StonerWohlfarth reversal), in contrast to the continuous film. Micromagnetic simulation confirmed the coherent reversal of the thicker islands. Two graphoepitaxy methods were examined for inducing long range order (LRO) in block copolymers. Nanoimprint lithography with in-situ annealing was successful in guiding the self assembly of the block copolymers in the grooves, however, no LRO was achieved. Selectively removable polymeric templates fabricated out of BARL-i@ anti reflection coating guide the self-assembly of PFS domains with good LRO and very few defects over a large area. The ordered arrays were then transferred into silica and W, forming an ordered array of cp-packed W islands with period of 29 nm and island diameter of 17 nm. Transfer of the pattern into CoCrPt is difficult due to the nonselective ion beam etching process.
Download or read book Magnetism of Surfaces Interfaces and Nanoscale Materials written by Robert E. Camley and published by Elsevier. This book was released on 2015-10-27 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past 30 years, magnetic research has been dominated by the question of how surfaces and interfaces influence the magnetic and transport properties of nanostructures, thin films and multilayers. The research has been particularly important in the magnetic recording industry where the giant magnetoresistance effect led to a new generation of storage devices including hand-held memories such as those found in the ipod. More recently, transfer of spin angular momentum across interfaces has opened a new field for high frequency applications.This book gives a comprehensive view of research at the forefront of these fields. The frontier is expanding through dynamic exchange between theory and experiment. Contributions have been chosen to reflect this, giving the reader a unified overview of the topic. - Addresses both theory and experiment that are vital for gaining an essential understanding of topics at the interface between magnetism and materials science - Chapters written by experts provide great insights into complex material - Discusses fundamental background material and state-of-the-art applications, serving as an indispensable guide for students and professionals at all levels of expertise - Stresses interdisciplinary aspects of the field, including physics, chemistry, nanocharacterization, and materials science - Combines basic materials with applications, thus widening the scope of the book and its readership
Download or read book Advanced Magnetic Nanostructures written by D.J. Sellmyer and published by Springer Science & Business Media. This book was released on 2006-07-02 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced magnetic nanostructures is an emerging field in magnetism and nanotechnology, but the literature consists of a rich variety of original papers and parts of reviews and books whose scope is comparatively broad. This calls for a book with specific emphasis on state-of-the-art synthetic methods for fabricating, characterizing and theoretically modeling new magnetic nanostructures. This book is intended to provide a comprehensive overview of the present state of the field. Leading researchers world-wide have contributed a survey of their special ties to guide the reader through the exploding literature in nanomagnetic structures. The focus is on deliberately structured nanomagnets. It includes cluster assembled, self-organized and patterned thin films but excludes, for example, multilayered thin films. We target both industrial and academic researchers in magnetism and related areas, such as nanotechnology, materials science, and theoretical solid-state physics.
Download or read book Magnetic Nanoparticles written by Sergey P. Gubin and published by John Wiley & Sons. This book was released on 2009-11-18 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary approach to the topic brings together reviews of the physics, chemistry, fabrication and application of magnetic nanoparticles and nanostructures within a single cover. With its discussion of the basics as well as the most recent developments, and featuring many examples of practical applications, the result is both a clear and concise introduction to the topic for beginners and a guide to relevant comprehensive physical phenomena and essential technological applications for experienced researchers.
Download or read book Fabrication and Characterization of Nanostructures from Self assembled Block Copolymers written by Joy Cheng and published by . This book was released on 2003 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscale magnetic dot arrays have attracted considerable interest, both for fundamental studies of micromagnetism and for possible applications in high-density magnetic data storage. Self-assembled block copolymers provide an alternative nanolithography technique to fabricate large-area nanomagnet arrays. Block copolymer thin films that micro-phase separate into periodic domains can be used as templates to define arrays of close-packed nanostructure, using a series of etching steps. Using polystyrene-polyferrocenyldimethyl-silane (PS-PFS), large-area polymer dots, silica dots and magnetic dots with periods of 56 nm were made using a series of plasma etching steps. Magnetometry techniques are used to characterize the bulk magnetic behavior of the dot arrays of Co, NiFe and pseudo spin valve structures. These dot arrays show strong magnetostatic interaction between the dots and within the dots. The self-assembly process is simple and low cost, however, the block copolymers typically have uncontrolled defects and lack long-range order. A topographically patterned substrate is used to guide the phase-separation in a subsequently deposited block copolymer film. The lateral dimensions of the patterns in the substrates, and interfacial interactions, are key factors in the ordering mechanism. Well-ordered block copolymer structures can be achieved under proper confinement conditions. In addition, the position of the polymer microdomains and defects in the array such as dislocations can be purposefully controlled by the design of the topographical guiding features. Combining topographic confinement with block copolymer lithographic methods will enable large-area ordered functional dot arrays to be made for various applications.
Download or read book Fabrication of Nanoscale Magnetic Domains Using Block copolymer Lithography written by Babajide Akinronbi and published by . This book was released on 2014 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tendency of PS-b-PDMS to phase separate, the tunability of the resulting morphology and the sufficient etch contrast between PS and PDMS makes the block copolymer ideal for creating patterns that can be transferred onto magnetic media. The aim of this study was to determine optimal BCP film thicknesses that produce spherical micro-domains with long range order on a Co substrate brushed with PS-OH and to transfer this pattern onto the underlying Co. Thin films of PS-b-PDMS were spun-cast onto Co substrates brushed with PS-OH, solvent annealed and consequently etched in a series of steps that removed one constituent polymer at a time. Patterns with periods between 36-39nm and with great long-range order were observed for BCP film thicknesses in the 32-35 nm range and successful transfer of the pattern onto Co film was achieved, resulting in fabrication of nanoscale, discrete domains.
Download or read book Nanolithography and Patterning Techniques in Microelectronics written by D Bucknall and published by Elsevier. This book was released on 2005-09-30 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques such as surface patterning have facilitated the emergence of advanced polymers with applications in areas such as microelectronics. Surface patterning of polymers has conventionally been undertaken by optical lithography. However, a new generation of nanolithographic and patterning techniques has made it possible to develop complex patterns at the nanoscale. Non-conventional lithography and patterning summarises this new range of techniques and their industrial applications.A number of chapters look at ways of forming and modifying surfaces for patterning. These are complemented by chapters on particular patterning techniques such as soft lithography, ion beam patterning, the use of nanostencils, photolithography and inkjet printing. The book also discusses prototyping and the manufacture of particular devices.With its distinguished international team of contributors, Non-conventional lithography and patterning is a standard reference for both those researching and using advanced polymers in such areas as microelectronics and biomedical devices. - Looks at alternative approaches used to develop complex patterns at the nanoscale - Concentrates on state of the art nanolithographic methods - Written by a distinguished international team of contributors
Download or read book Polymer Thin Films written by Ophelia Kwan Chui Tsui and published by World Scientific. This book was released on 2008 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ch. 1. Block copolymer thin films / J.-Y. Wang, S. Park and T. P. Russell -- ch. 2. Equilibration of block copolymer films on chemically patterned surfaces / G. S. W. Craig, H. Kang and P. F. Nealey -- ch. 3. Structure formation and evolution in confined cylinder-forming block copolymers / G. J. A. Sevink and J. G. E. M. Fraaije -- ch. 4. Block copolymer lithography for magnetic device fabrication / J. Y. Cheng and C. A. Ross -- ch. 5. Hierarchical structuring of polymer nanoparticles by self-organization / M. Shimomura ... [et al.] -- ch. 6. Wrinkling polymers for surface structure control and functionality / E. P. Chan and A. J. Crosby -- ch. 7. Crystallization in polymer thin films: morphology and growth / R. M. Van Horn and S. Z. D. Cheng -- ch. 8. Friction at soft polymer surface / M. K. Chaudhury, K. Vorvolakos and D. Malotky -- ch. 9. Relationship between molecular architecture, large-strain mechanical response and adhesive performance of model, block copolymer-based pressure sensitive adhesives / C. Creton and K. R. Shull -- ch. 10. Stability and dewetting of thin liquid films / K. Jacobs, R. Seemann and S. Herminghaus -- ch. 11. Anomalous dynamics of polymer Films / O. K. C. Tsui.
Download or read book Concise Encyclopedia of Magnetic and Superconducting Materials written by K.H.J. Buschow and published by Elsevier. This book was released on 2005-12-28 with total page 1361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic and superconducting materials pervade every avenue of the technological world – from microelectronics and mass-data storage to medicine and heavy engineering. Both areas have experienced a recent revitalisation of interest due to the discovery of new materials, and the re-evaluation of a wide range of basic mechanisms and phenomena.This Concise Encyclopedia draws its material from the award-winning Encyclopedia of Materials and Engineering, and includes updates and revisions not available in the original set -- making it the ideal reference companion for materials scientists and engineers with an interest in magnetic and superconducting materials. - Contains in excess of 130 articles, taken from the award-winning Encyclopedia of Materials: Science and Technology, including ScienceDirect updates not available in the original set - Each article discusses one aspect of magnetic and superconducting materials and includes photographs, line drawings and tables to aid the understanding of the topic at hand - Cross-referencing guides readers to articles covering subjects of related interest
Download or read book Microlithography written by Bruce W. Smith and published by CRC Press. This book was released on 2020-05-01 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: The completely revised Third Edition to the bestselling Microlithography: Science and Technology provides a balanced treatment of theoretical and operational considerations, from fundamental principles to advanced topics of nanoscale lithography. The book is divided into chapters covering all important aspects related to the imaging, materials, and processes that have been necessary to drive semiconductor lithography toward nanometer-scale generations. Renowned experts from the world’s leading academic and industrial organizations have provided in-depth coverage of the technologies involved in optical, deep-ultraviolet (DUV), immersion, multiple patterning, extreme ultraviolet (EUV), maskless, nanoimprint, and directed self-assembly lithography, together with comprehensive descriptions of the advanced materials and processes involved. New in the Third Edition In addition to the full revision of existing chapters, this new Third Edition features coverage of the technologies that have emerged over the past several years, including multiple patterning lithography, design for manufacturing, design process technology co-optimization, maskless lithography, and directed self-assembly. New advances in lithography modeling are covered as well as fully updated information detailing the new technologies, systems, materials, and processes for optical UV, DUV, immersion, and EUV lithography. The Third Edition of Microlithography: Science and Technology authoritatively covers the science and engineering involved in the latest generations of microlithography and looks ahead to the future systems and technologies that will bring the next generations to fruition. Loaded with illustrations, equations, tables, and time-saving references to the most current technology, this book is the most comprehensive and reliable source for anyone, from student to seasoned professional, looking to better understand the complex world of microlithography science and technology.
Download or read book Synthesis and Applications of Copolymers written by Anbanandam Parthiban and published by John Wiley & Sons. This book was released on 2014-06-10 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the reactivity of monomers is crucial in creating copolymers and determining the outcome of copolymerization. Covering the fundamental aspects of polymerization, Synthesis and Applications of Copolymers explores the reactivity of monomers and reaction conditions that ensure that the newly formed polymeric materials exhibit desired properties. Referencing a wide-range of disciplines, the book provides researchers, students, and scientists with the preparation of a diverse variety of copolymers and their recent developments, with a particular focus on copolymerization, crystallization, and techniques like nanoimprinting and micropatterning.
Download or read book Nanostructure Engineering written by Peter Robert Krauss and published by . This book was released on 1997 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanofabrication Using Block Copolymer Lithography written by Shuaigang Xiao and published by . This book was released on 2005 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Integration and Joining Technologies written by Mrityunjay Singh and published by John Wiley & Sons. This book was released on 2011-09-26 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book joins and integrates ceramics and ceramic-based materials in various sectors of technology. A major imperative is to extract scientific information on joining and integration response of real, as well as model, material systems currently in a developmental stage. This book envisions integration in its broadest sense as a fundamental enabling technology at multiple length scales that span the macro, millimeter, micrometer and nanometer ranges. Consequently, the book addresses integration issues in such diverse areas as space power and propulsion, thermoelectric power generation, solar energy, micro-electro-mechanical systems (MEMS), solid oxide fuel cells (SOFC), multi-chip modules, prosthetic devices, and implanted biosensors and stimulators. The engineering challenge of designing and manufacturing complex structural, functional, and smart components and devices for the above applications from smaller, geometrically simpler units requires innovative development of new integration technology and skillful adaptation of existing technology.
Download or read book Introduction to Nanoscience written by Gabor L. Hornyak and published by CRC Press. This book was released on 2008-05-15 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tomorrow's nanoscientist will have a truly interdisciplinary and nano-centric education, rather than, for example, a degree in chemistry with a specialization in nanoscience. For this to happen, the field needs a truly focused and dedicated textbook. This full-color masterwork is such a textbook. It introduces the nanoscale along with the societal
Download or read book Magnetic Materials Processes and Devices 9 written by and published by The Electrochemical Society. This book was released on 2007 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue documents the state of the field in magnetic thin film processing using electrochemical methods including film nucleation and growth, structure of deposits, stress and micromagnetics of films, thermal and magnetic annealing, electrochemical and electroless plating systems, etching, process chemistry, tool design, and process control.
Download or read book Self Assembly of Polymers written by Dmitry Volodkin and published by MDPI. This book was released on 2020-04-22 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, polymer self-assembly has become extremely attractive for both biological (drug delivery, tissue engineering, scaffolds) and non-biological (packaging, semiconductors) applications. In nature, a number of key biological processes are driven by polymer self-assembly, for instance protein folding. Impressive morphologies can be assembled from polymers thanks to a diverse range of interactions involved, e.g., electrostatics, hydrophobic, hots-guest interactions, etc. Both 2D and 3D tailor-made assemblies can be designed through modern powerful techniques and approaches such as the layer-by-layer and the Langmuir-Blodgett deposition, hard and soft templating. This Special Issue highlights contributions (research papers, short communications, review articles) that focus on recent developments in polymer self-assembly for both fundamental understanding the assembly phenomenon and real applications.
