Download or read book Polymer Multilayer Films for Optical and Dielectric Applications written by Kezhen Yin and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1: Performance of new polymer nanolayer GRIN system with a high temperature polymer, OKP4HT, was evaluated. A combination of extruded nanolayered GRIN film systems, comprised of a total of five different materials, were combined to produce optical laminates with a high refractive index range, 1.445 - 1.630. The optical performance of a series of varied magnitude GRIN lenses was evaluated. Refractive index distribution and surface profile of the GRIN lenses match the expected designed value. Increasing the lens refractive index range resulted in decreased spherical aberrations following analytical optical predictions. An analytical approach was reported to correlate the polymer material UST to the onset of polymer material loss modulus as measured by DMTA. Thermo-optical interferometry measurements of irreversible lens deformation confirmed the lenses upper service temperature (UST) as 125°C for the OKP4HT/PC system as compared to 75°C for an PMM/SAN17 systems. Chapter 2: Inspired by the soft, deformable human eye lens, a synthetic polymer GRIN lens with an adaptive geometry and focal power has been demonstrated via extrusion and thermoforming of nanolayered elastomeric polymer films. Polymer nanolayered films comprised of two thermoplastic polyurethanes with a refractive index difference of 0.05 were co-extruded via forced assembly technique. The set of thirty nanolayered polymer films exhibited transmission near 90% with each film varying in refractive index by 0.0017 as a result of the nanolayering arrangement. An adaptive GRIN lens was fabricated from a laminated stack of the variable refractive index films with a 0.05 spherical gradient refractive index distribution and mechanically deformability based on mechanical compression of the lens. Variation in the optical properties, 20% variation in focal length and reduced spherical aberration, of the deformable GRIN lens were measured and simulated by placido-cone topography and ANSYS methods. The demonstration of a solid state, dynamic focal length, GRIN lens with improved aberration correction was discussed in contact of potential future implantable devices. Chapter 3: Enhanced dielectric properties were achieved through interface/interphase modulation and biaxial orientation for the poly(ethylene terephthalate)/poly(methyl methacrylate)/poly(vinylidene fluoride-co-hexafluoropropylene) [PET/PMMA/P(VDF-HFP)] three-component multilayer films. Because PMMA is miscible with P(VDF-HFP) and compatible with PET, the interfacial adhesion between PET and P(VDF-HFP) layers was greatly improved. Biaxial stretching of the as-extruded multilayer films induced formation of highly oriented fibrillar crystals in both P(VDF-HFP) and PET. There were several effects resulted from biaxial orientation. First, the parallel orientation of PVDF crystals reduced the dielectric loss from the ac relaxation in a crystals. Second, biaxial stretching constrained the amorphous phase in P(VDF-HFP) and thus the migrational loss from impurity ions was reduced. Third, biaxial stretching induced a significant amount of rigid amorphous phase in PET, further enhancing the breakdown strength of multilayer films. Due to the synergistic effects of improved interfacial adhesion and biaxial orientation, the PET/PMMA/P(VDF-HFP) 65-layer films with 8 vol.% PMMA exhibited the optimal dielectric properties with an energy density of 17.4 J/cm3 at breakdown and the lowest dielectric loss. These three-component multilayer films are promising for future high energy density film capacitor applications. Chapter 4: Advanced film capacitors require polymers with high thermal stability, high breakdown strength, and low loss for high temperature dielectric applications. In order to fulfill such requirements, two polymer multilayer film systems were coextruded via a forced assembly technique. High glass transition (Tg) polycarbonate (HTPC) and polysulfone (PSF) were layered with poly(vinylidene fluoride) (PVDF), respectively. The PSF/PVDF system was more thermally stable than HTPC/PVDF system. For dielectric properties at At high temperatures the PSF/PVDF system exhibited higher breakdown strength and lower hysteresis compared with HTPC/PVDF system. These results demonstrated that PSF/PVDF was a superior system to HTPC/PVDF for high temperature dielectric capacitors.

Download or read book Manufacturing and Novel Applications of Multilayer Polymer Films written by Deepak Langhe and published by William Andrew. This book was released on 2016-01-04 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufacturing and Novel Applications of Multilayer Polymer Films discusses the advancements in multilayer technology, including its capability to produce hundreds of layers in a single film by a melt coextrusion process. These engineered films can have significantly enhanced performance properties, allowing films to be made thinner, stronger, and with better sealing properties. As recent developments in feedblocks and materials have opened up a range of new possibilities, this book discusses different feedblocks, and viscosity and material considerations. It is the first comprehensive summary of the latest technology in multilayer film processing and related applications, and is written from a practical perspective, translating research into commercial production and real world products. The book provides fundamental knowledge on microlayer coextrusion processing technology, how to fabricate such structures, structure and properties of such microlayers, and potential applications, thus helping research scientists and engineers develop products which not only fulfill their primary function, but can also be manufactured reliably, safely, and economically. - Provides a fundamental knowledge of microlayer coextrusion processing, including how to fabricate microlayer structures, the properties of microlayers, and potential applications, including optics, polymer film capacitors, and semiconductors - Includes an in-depth analysis of all technologies used for producing multilayered films and structures by coextrusion processing - Thoroughly assesses potential future trends in multilayer coextrusion technology, thus enabling engineers and scientists to stay ahead of the curve in this rapidly advancing area

Download or read book Extremely High Rate Deposition of Polymer Multilayer Optical Thin Film Materials written by and published by . This book was released on 1993 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper highlights a new technique for extremely high rate deposition of optical dielectric films (vacuum deposition of polymer multilayer thin films). This is a way to produce multilayer optical filters comprised of thousands of layers of either linear or nonlinear optical materials. The technique involves the flash evaporation of an acrylic monomer onto a moving substrate; the monomer is then cured. Acrylic polymers deposited to date are very clear for wavelengths between 0.35 and 2.5 [mu]m; they have extinction coefficients of k[approx]10[sup [minus]7]. Application of electric field during cross linking can polarize (''pole'') the film to greatly enhance the nonlinear optical properties. ''Poling'' films with the polymer multilayer technique offers advantages over conventional approaches, in that the polarization should not decay over time. Battelle's Pacific Northwest Laboratory is well suited for bringing linear and nonlinear polymer multilayer optical filter technology to manufacturing production status for batch and wide area web applications. 10 figs.

Download or read book Polymers for Electronic Photonic Application written by C. P. Wong and published by Elsevier. This book was released on 2013-10-22 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent advances in the use of polymeric materials by the electronic industry can be found in Polymers for Electronic and Photonic Applications. This bookprovides in-depth coverage of photoresis for micro-lithography, microelectronic encapsulants and packaging, insulators, dielectrics for multichip packaging,electronic and photonic applications of polymeric materials, among many other topics. Intended for engineers and scientists who design, process, and manufacturemicroelectronic components, this book will also prove useful for hybrid and systems packaging managers who want to be informed of the very latest developments inthis field.* Presents most recent advances in the use of polymeric materials by the electronic industry* Contributions by foremost experts in the field

Download or read book From Application of Organic Thin Multilayer Films in 3d Optical Data Storage to Their Fabrication for Organic Electronic Devices written by Anuj Saini and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research in optical data storage (ODS) has focused on methods to increase the capacity of ODS media by exploiting the third dimension. Several organic materials have been studied for 3D ODS, and TB-level storage has been achieved using two-photon writing, fluorescent reading schemes, but the fabrication methods are not easily scalable and require expensive laser systems. This work explores the use roll-to-roll multilayer (ML) films produced by co-extrusion of organic polymers for a large capacity, easily scalable, low cost ODS medium. Small layer spacing and FL reading scheme allowed by co-extrusion allows for a much higher axial capacity than commercial discs. The physically multilayered medium improves axial resolution and reduces interlayer cross-talk. A transition from a linear to non-linear writing mechanism that is efficient enough to obtain good contrast is observed near the microsecond time scale. It has also been shown that it is possible to achieve a significant non-linear fluorescence modulation response using dye/polymer system by exploiting dye interactions with ns-pulses from a low-cost CW laser. The last few years have seen increased attention towards low-cost solution-processed bulk heterojunction organic photovoltaic devices (OPV). There are many well-understood film forming techniques, and yet very few of them have been used to fabricate BHJ OPVs. The film forming techniques that have been explored for making OPVs are well suited for individual processing on small flat two-dimensional substrates (i.e. spin coating, doctor blading and drop casting). There are, however, many more film-forming techniques available that have been developed for high volume processing of paper, metal, plastic and textile materials. This work highlights a highly controllable electrolysis-based industrial technique (electrocoating) to fabricate thin films of functionalized Poly(3-alkylthiophene)and [6,6]-Phenyl C61 butyric acid (PCBA) for use in the OPV applications. The process of electrocoating is mainly used to adhere primers or single-layer coatings to metal substrates on the industrial level. It is an established process that produces precise, uniform coatings from water-based dispersions. The electrocoated films show good uniformity without pinholes and show similar optical and dielectric properties as compared to solution processed films.

Download or read book Polymer Films with Embedded Metal Nanoparticles written by Andreas Heilmann and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an overview of nanostructure determination and ways to find relationships to the electronic and optical properties. The methods described can be applied to a large number of other granular metal-insulator systems and used as a guideline for characterisation and modelling. In addition, the book describes the manufacture of artificially structured nanomaterials using laser or electron-beam irradiation.

Download or read book Special Polymers for Electronics and Optoelectronics written by J.A. Chilton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercially successful fully synthetic polymeric materials were pro duced in the early years of this century, the first example being Bakelite. This was made from phenol and formaldehyde by Leo Bakeland in 1909. Before the end of the 1920s, a large number of other synthetic polymers had been created, including polyvinyl chloride and urea-formaldehyde. Today, there are literally hundreds of synthetic polymers commercially available with ranges of properties making them suitable for applications in many industrial sectors, including the electrical and electronics industries. In many instances the driving force behind the development of new materials actually came from the electronics industry, and today's advanced electronics would be inconceivable without these materials. For many years polymers have been widely used in all sectors of the electronics industry. From the early days of the semiconductor industry to the current state of the art, polymers have provided the enabling technologies that have fuelled the inexorable and rapid development of advanced electronic and optoelectronic devices.

Download or read book Functional Polymer Films 2 Volume Set written by Wolfgang Knoll and published by John Wiley & Sons. This book was released on 2013-02-12 with total page 1107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very thin film materials have emerged as a highly interesting and useful quasi 2D-state functionality. They have given rise to numerous applications ranging from protective and smart coatings to electronics, sensors and display technology as well as serving biological, analytical and medical purposes. The tailoring of polymer film properties and functions has become a major research field. As opposed to the traditional treatise on polymer and resin-based coatings, this one-stop reference is the first to give readers a comprehensive view of the latest macromolecular and supramolecular film-based nanotechnology. Bringing together all the important facets and state-of-the-art research, the two well-structured volumes cover film assembly and depostion, functionality and patterning, and analysis and characterization. The result is an in-depth understanding of the phenomena, ordering, scale effects, fabrication, and analysis of polymer ultrathin films. This book will be a valuable addition for Materials Scientists, Polymer Chemists, Surface Scientists, Bioengineers, Coatings Specialists, Chemical Engineers, and Scientists working in this important research field and industry.

Download or read book Optical Thin Films and Coatings written by Angela Piegari and published by Woodhead Publishing. This book was released on 2018-06-19 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Thin Films and Coatings: From Materials to Applications, Second Edition, provides an overview of thin film materials and their properties, design and manufacture across a wide variety of application areas. Sections explore their design and manufacture and their unconventional features, including the scattering properties of random structures in thin films, optical properties at short wavelengths, thermal properties and color effects. Other chapters focus on novel materials, including organic optical coatings, surface multiplasmonics, optical thin films containing quantum dots, and optical coatings, including laser components, solar cells, displays and lighting, and architectural and automotive glass. The book presents a technical resource for researchers and engineers working with optical thin films and coatings. It is also ideal for professionals in the security, automotive, space and other industries who need an understanding of the topic. - Provides thorough review of applications of optical coatings including laser components, solar cells, glazing, displays and lighting - One-stop reference that addresses deposition techniques, properties, and applications of optical thin films and coatings - Novel methods, suggestions for analysis, and applications makes this a valuable resource for experts in the field as well

Download or read book Polymer Thin Films written by Abbass A. Hashim and published by BoD – Books on Demand. This book was released on 2010-04-01 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a timely overview of a current state of knowledge of the use of polymer thin film for important technological applications. Polymer thin film book covers the scientific principles and technologies that are necessary to implement the use of polymer electronic device. A wide-ranging and definitive coverage of this emerging field is provided for both academic and practicing scientists. The book is intended to enable readers with a specific background, e.g. polymer nanotechnology, to become acquainted with other specialist aspects of this multidisciplinary field. Part A of the book covers the fundamental of the key aspect related to the development and improvement of polymer thin film technology and part B covers more advanced aspects of the technology are dealt with nano-polymer layer which provide an up-to-date survey of current research directions in the area of polymer thin film and its application skills.

Download or read book Polymer Nanocomposite Films and Coatings written by Mayank Pandey and published by Elsevier. This book was released on 2024-01-22 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Nanocomposite Films and Coatings: Processes, Fundamental Properties and Applications presents a comprehensive review on the fundamental chemistry, physics, biology and engineering aspects of polymer nanocomposite films and coatings.The content of the book covers design configuration, synthesis and processing methods, structure, fundamental properties, and a wide range of applications in diverse research fields. Various unresolved issues and new technical challenges regarding regulatory affairs, safety considerations and environmental and health impact are also discussed in detail.The book will be a valuable reference resource for scientists, engineers, and postgraduate students, working in the field of polymer composites and nanocomposites helping them to find solutions to both fundamental and applied problems associated with this important research field. - Presents recent research developments in the synthesis, processing, functionalization, and properties of polymer nanocomposite films and coatings - Covers applications in electronics and optoelectronic devices, sensors and actuators, solar energy, food packaging, anticorrosion, anti-wear, antifouling, electromagnetic interference shielding, dielectric, aerospace, and textile industries as well as in biomedical fields for antibacterial, antifungal, and drug delivery applications - Includes comprehensive coverage with a global, internationally recognized author-base

Download or read book Optical and Electrical Properties of Polymers Volume 214 written by John A. Emerson and published by Mrs Proceedings. This book was released on 1991-10-18 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

Download or read book Recent Advances in Thin Films written by Sushil Kumar and published by Springer Nature. This book was released on 2020-08-27 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the expert contributions from the invited speakers at the 17th International Conference on Thin Films (ICTF 2017), held at CSIR-NPL, New Delhi, India. Thin film research has become increasingly important over the last few decades owing to the applications in latest technologies and devices. The book focuses on current advances in thin film deposition processes and characterization including thin film measurements. The chapters cover different types of thin films like metal, dielectric, organic and inorganic, and their diverse applications across transistors, resistors, capacitors, memory elements for computers, optical filters and mirrors, sensors, solar cells, LED's, transparent conducting coatings for liquid crystal display, printed circuit board, and automobile headlamp covers. This book can be a useful reference for students, researchers as well as industry professionals by providing an up-to-date knowledge on thin films and coatings.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymers for Electronic Applications written by J.H. Lai and published by CRC Press. This book was released on 2018-01-18 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: The object of this book is to review and to discuss some important applications of polymers in electronics. The first three chapters discuss the current primary applications of polymers in semiconductor device manufacturing: polymers as resist materials for integrated circuit fabrication, polyimides as electronics packaging materials, and polymers as integrated circuits encapsulates.

Download or read book Polymer Films in Sensor Applications written by Gabor Harsanyi and published by Routledge. This book was released on 2017-10-19 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer films now play an essential and growing role in sensors. Recent advances in polymer science and film preparation have made polymer films useful, practical and economical in a wide range of sensor designs and applications. Further, the continuing miniaturization of microelectronics favors the use of polymer thin films in sensors. This new book is the first comprehensive presentation of this technology. It covers both scientific fundamentals and practical engineering aspects. Included is an extensive survey of all types of sensors and applications. The very detailed table of contents in the next pages provides full information on content. More than 200 schematics illustrate a wide variety of sensor structures and their function.

Download or read book Vervoer per stoomboot voor militaire written by and published by . This book was released on 1855 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: