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Author: Leonid Ionov
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Leonid Ionov
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Danqing Liu
Publisher: John Wiley & Sons
ISBN: 3527338691
Category : Technology & Engineering
Languages : en
Pages : 274
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Book Description
Adopting an integrated approach, this book covers experiments, theory, and emerging applications. In the first part surfaces are described that change from flat to either a random corrugated or to a well-structured structure, while the second part deals with those surface structures integrated in the coating surface where the structures change their shape or dimension when addressed by an external trigger. A variety of materials are addressed, including liquid crystal polymers, hydrogels, hard acrylates, and soft silicones. The whole is rounded off by a discussion of various applications, including surface controlled flows in microfluidic systems. Of interest to chemists and engineers, researchers in industry and academia, as well as those working in the paint industry and hydrodynamics.
Author: Marek W. Urban
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 276
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Book Description
Science of the stimuli-responsive materials, and in particular polymers and coatings will play a key role in the developments of future technologies and new knowledge in this field. The book provides the highlights for newcomes as well as a comprehensive review for experienced practitioners of recent advances to stimuli-responsive polymeric films and coatings. Two sections of the book focus on synthetic and physocao-chemical aspects and this book is a must to those involved in the growing field of nanotechnologies of stimuli-responsive polymers.
Author: Wyatt E. Tenhaeff
Publisher:
ISBN:
Category :
Languages : en
Pages : 131
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Book Description
(cont.) The final two projects involved the synthesis of polymer thin films as chemically selective layers in microscale chemical sensors. In a sensing system based on the detection of amine compounds through their reaction with reactive polymer coatings on microcantilevers, it was shown that increased crosslinking of the polymer layer leads to greater cantilever deflection. This increased deflection enabled the design of simple, resistance-based signal readout schemes with low power requirements. New polymer compositions and sensing strategies were also developed for the detection of nitroaromatic explosives vapors. Poly(4-vinylpyridine) was shown to swell when exposed to nitroaromatics, while showing little response to common interferents. In contrast to conventional nitroaromatic-selective layers, it was shown that poly(4-vinylpyridine) does not interact with nitroaromatics through hydrogen bonding, which is important for multicomponent sensor arrays. A new microscale sensing concept utilizing this swelling was designed, fabricated, and characterized.
Author:
Publisher: John Wiley & Sons
ISBN: 3527321551
Category : Technology & Engineering
Languages : en
Pages : 453
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Book Description
The book series Nanomaterials for the Life Sciences, provides an in-depth overview of all nanomaterial types and their uses in the life sciences. Each volume is dedicated to a specific material class and covers fundamentals, synthesis and characterization strategies, structure-property relationships and biomedical applications. The series brings nanomaterials to the Life Scientists and life science to the Materials Scientists so that synergies are seen and developed to the fullest. Written by international experts of various facets of this exciting field of research, the series is aimed at scientists of the following disciplines: biology, chemistry, materials science, physics, bioengineering, and medicine, together with cell biology, biomedical engineering, pharmaceutical chemistry, and toxicology, both in academia and fundamental research as well as in pharmaceutical companies. VOLUME 5 - Nanostructured Thin Films and Surfaces
Author: Liang Hu
Publisher: John Wiley & Sons
ISBN: 3527349014
Category : Technology & Engineering
Languages : en
Pages : 404
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Book Description
Smart Stimuli-Responsive Poymers, Films, and Gels Discover the most important developments in synthesis, simulation, and applications of a fascinating compound class There exist a range of natural materials that respond to environmental changes by altering their physical or chemical properties, known as stimuli-responsive polymers, these substances are responsive to light, temperature, pressure, and more. The study of these so-called “smart” polymers is essential to a range of application fields, many of which have generated cutting-edge research in recent decades. A comprehensive introduction to the subject is therefore well-timed Smart Stimuli-Responsive Polymers, Films, and Gels provides an introduction to these polymers and their applications. It includes producing these polymers through synthetic approaches, simulating their responses to different stimuli, and applying these materials in different industries and research capacities. Written to serve the requirements of advanced students and senior researchers alike, this timely work will drive years of research in this vital field. In Smart Stimuli-Responsive Polymers, Films, and Gels readers will also find: Treatment of mechanoresponsive, photoresponsive, and ionizing-radiation responsive polymers Applications in emerging fields such as sensors, biomedicine, catalysis, and more Interdisciplinary research into the properties and responses of these vital compounds Smart Stimuli-Responsive Polymers, Films, and Gels promises to become a seminal work for chemists, materials scientists, and industrial researchers seeking to incorporate these materials into a variety of industrial and research areas.
Author: Atsushi Hozumi
Publisher: Springer
ISBN: 3319926543
Category : Technology & Engineering
Languages : en
Pages : 467
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Book Description
Superhydrophobic surfaces, artificially mimicking lotus leaves, have captured the attention of scientists and engineers over the past few decades. Recent trends have shifted from superhydrophobicity to superominipohobicity, or superamphiphobicity. In addition, dynamic rather than static surface wetting/dewetting properties, which can be triggered by various stimuli, including temperature, pH, magnetic/electric fields, solvents, light exposure etc, have been highly sought after for commercial applications. This book will focus on recent topics related to various stimuli-responsive wetting/dewetting surfaces, and give an overview of the knowledge and concepts of how to design and establish these smart artificial surfaces, which can be used for technical developments in a wide variety research fields.
Author: Ophelia Kwan Chui Tsui
Publisher: World Scientific
ISBN: 9812818820
Category : Science
Languages : en
Pages : 312
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Book Description
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.
Author: Shangzhi Chen
Publisher: Linköping University Electronic Press
ISBN: 9179297455
Category :
Languages : en
Pages : 142
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Book Description
Intrinsically conducting polymers forms a category of doped conjugated polymers that can conduct electricity. Since their discovery in the late 1970s, they have been widely applied in many fields, ranging from optoelectronic devices to biosensors. The most common type of conducting polymers is poly(3,4-ethylenedioxythiophene), or PEDOT. PEDOT has been popularly used as electrodes for solar cells or light-emitting diodes, as channels for organic electrochemical transistors, and as p-type legs for organic thermoelectric generators. Although many studies have been dedicated to PEDOT-based materials, there has been a lack of a unified model to describe their optical properties across different spectral ranges. In addition, the interesting optical properties of PEDOT-based materials, benefiting from its semi-metallic character, have only been rarely studied and utilized, and could potentially enable new applications. Plasmonics is a research field focusing on interactions between light and metals, such as the noble metals (gold and silver). It has enabled various opportunities in fundamental photonics as well as practical applications, varying from biosensors to colour displays. This thesis explores highly conducting polymers as alternatives to noble metals and as a new type of active plasmonic materials. Despite high degrees of microstructural disorder, conducting polymers can possess electrical conductivity approaching that of poor metals, with particularly high conductivity for PEDOT deposited via vapour phase polymerization (VPP). In this thesis, we systematically studied the optical and structural properties of VPP PEDOT thin films and their nanostructures for plasmonics and other optical applications. We employed ultra-wide spectral range ellipsometry to characterize thin VPP PEDOT films and proposed an anisotropic Drude-Lorentz model to describe their optical conductivity, covering the ultraviolet, visible, infrared, and terahertz ranges. Based on this model, PEDOT doped with tosylate (PEDOT:Tos) presented negative real permittivity in the near infrared range. While this indicated optical metallic character, the material also showed comparably large imaginary permittivity and associated losses. To better understand the VPP process, we carefully examined films with a collection of microstructural and spectroscopic characterization methods and found a vertical layer stratification in these polymer films. We unveiled the cause as related to unbalanced transport of polymerization precursors. By selection of suitable counterions, e.g., trifluoromethane sulfonate (OTf), and optimization of reaction conditions, we were able to obtain PEDOT films with electrical conductivity exceeding 5000 S/cm. In the near infrared range from 1 to 5 µm, these PEDOT:OTf films provided a well-defined plasmonic regime, characterized by negative real permittivity and lower magnitude imaginary component. Using a colloidal lithography-based approach, we managed to fabricate nanodisks of PEDOT:OTf and showed that they exhibited clear plasmonic absorption features. The experimental results matched theoretical calculations and numerical simulations. Benefiting from their mixed ionic-electronic conducting characters, such organic plasmonic materials possess redox-tunable properties that make them promising as tuneable optical nanoantennas for spatiotemporally dynamic systems. Finally, we presented a low-cost and efficient method to create structural colour surfaces and images based on UV-treated PEDOT films on metallic mirrors. The concept generates beautiful and vivid colours through-out the visible range utilizing a synergistic effect of simultaneously modulating polymer absorption and film thickness. The simplicity of the device structure, facile fabrication process, and tunability make this proof-of-concept device a potential candidate for future low-cost backlight-free displays and labels.
