Author: 魏宏宇Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Electrochemical Surface Modification for Application in Organic Optoelectronics
Author: 魏宏宇Electrochemical Surface Modification
Author: Richard C. AlkirePublisher: John Wiley & Sons
ISBN: 3527625313
Category : Science
Languages : en
Pages : 360
Book Description
In this topical volume, the authors provide in-depth coverage of the vital relationship between electrochemistry and the morphology of thin films and surfaces. Clearly divided into four major sections, the book covers nanoscale dielectric films for electronic devices, superconformal film growth, electrocatalytic properties of transition metal macrocycles, and the use of synchrotron techniques in electrochemistry. All the chapters offer a concise introduction to the relevant topic, as well as supplying numerous references for easy access to further reading and the original literature. The result is must-have reading for electrochemists, physical and surface chemists and physicists, as well as materials scientists and engineers active in the field of spectroscopic methods in electrochemistry.
Surface Treatments for Biological, Chemical and Physical Applications
Author: Mehmet GürsoyPublisher: John Wiley & Sons
ISBN: 3527698825
Category : Technology & Engineering
Languages : en
Pages : 386
Book Description
A step-by-step guide to the topic with a mix of theory and practice in the fields of biology, chemistry and physics. Straightforward and well-structured, the first chapter introduces fundamental aspects of surface treatments, after which examples from nature are given. Subsequent chapters discuss various methods to surface modification, including chemical and physical approaches, followed by the characterization of the functionalized surfaces. Applications discussed include the lotus effect, diffusion barriers, enzyme immobilization and catalysis. Finally, the book concludes with a look at future technology advances. Throughout the text, tutorials and case studies are used for training purposes to grant a deeper understanding of the topic, resulting in an essential reference for students as well as for experienced engineers in R&D.
Surface Modified Nanomaterials for Applications in Catalysis
Author: Manoj B. GawandePublisher: Elsevier
ISBN: 0128236027
Category : Science
Languages : en
Pages : 392
Book Description
Surface Modified Nanomaterials for Applications in Catalysis: Fundamentals, Methods and Applications provides an overview of the different state-of-the-art surface modification methods of nanomaterials and their commercial applications. The main objective of this book is to comprehensively cover the modification of nanomaterial and their fabrication, including different techniques and discussions of present and emerging commercial applications. The book addresses fundamental chemistry concepts as applied to the modification of nanomaterials for applications in energy, catalysis, water remediation, sensors, and more. Characterization and fabrication methodologies are reviewed, along with the challenges of up-scaling of processes for commercial applications. This book is suitable for academics and practitioners working in materials science, engineering, nanotechnology, green chemistry and chemical engineering. Provides an overview of the basic principles of surface modification of nanomaterials Reviews useful fabrication and characterization methodologies for key applications Addresses surface modified nanomaterials for applications in catalysis, energy, sensor, environment, and more
Electrode Surface Modification and Its Application to Electrocatalysis
Author: Chao LinHandbook of Research on Tribology in Coatings and Surface Treatment
Author: Pakseresht, AmirhosseinPublisher: IGI Global
ISBN: 1799896854
Category : Technology & Engineering
Languages : en
Pages : 470
Book Description
Advances are continuously being made in applying the coatings and surface treatments by different techniques to reduce the damages from tribology. Engineers need more detailed information to compare the capability of each coating process in wear resistant and lubrication applications. It is also important to focus on the concepts of tribology in various applications such as the manufacturing process, bio implants, machine elements, and corrosive environments. The need for a comprehensive resource addressing these findings in order to improve wear resistance is unavoidable. The Handbook of Research on Tribology in Coatings and Surface Treatment evaluates the latest advances the fabrication of wear-resistant and lubricant coatings by different techniques and investigates wear-resistant coatings and surface treatments in various applications such as the automobile industry. Covering a wide range of topics such as lubricant coatings and wearable electronic devices, it is ideal for engineers, industry professionals, researchers, academicians, scholars, practitioners, instructors, and students.
Surface Modification of Indium Tin Oxide
Author: Dongho KimPublisher:
ISBN:
Category :
Languages : en
Pages : 85
Book Description
Indium tin oxide serve a critical function in many organic devices, such as organic light emitting diodes and organic photovoltaics. To optimize the performances of these devices, it is desirable to tune the interface between the indium tin oxide and the next functional layer of these devices. A common surface modification of transparent conductive oxides is through the use of self-assembled monolayers. This methodology enables a simultaneously tuning of the properties and performance of this interface, including the surface energy, work function and durability of the transparent conductive oxide. Phosphonic acid and silane based monolayers have been extensively studied and used in devices for their ability to tune the interfacial properties of transparent conductive oxide. Herein, alcohol based monolayers are first demonstrated on transparent conductive oxide surfaces. The electrochemical and chemical stabilities of alcohol based monolayers, as well as changes in the optical properties of the Indium tin oxide as a function of their stability were evaluated in comparison to more traditional routes of surface modification, such as through the use of silanes and phosphonic acid based monolayers. The tunability of both work function and surface energy of the modified Indium tin oxide were also determined for assessing their electronic properties.
Optoelectronic Devices
Author: Kristin Jeannette SuhrPublisher:
ISBN:
Category :
Languages : en
Pages : 596
Book Description
The field of optoelectronics is booming, as it involves important, functional electrical-to-optical and optical-to-electrical transducers. This dissertation contains efforts in three important areas of optoelectronics – electrode modification, light-emitting electrochemical cells (LEECs), and solar cells. Two ubiquitous metal oxide electrodes – indium tin oxide (ITO) and titanium dioxide (TiO2) – have been chemically modified using the electrochemical reduction of iodonium salts to enhance interfacial charge transfer properties in devices. The surface coverage was controllable and monolayer to multilayer growth was achieved, resulting in passivation of the electrochemical reactivity of the electrode from 9 to 73%. X-ray photoelectron spectroscopy confirmed the presence of modifiers on the electrode that were either bound to surface hydroxyl groups or strongly physisorbed. LEECs have been fabricated from a series of ionic iridium(III) complexes to examine the effect of bulky, hydrophobic phenyl substituents. The modified complexes displayed band gap tuning and increased quantum yields. Devices doped with LiPF6 displayed reduced response times, modest lifetimes, and peak luminances as high as 5425 cd/m2, 50% higher than the corresponding salt-free device and nearly double the luminance of the parent complex. The best complex benefited from the increased stability and limited self-quenching imparted by the phenyl substituents, while maintaining a large band gap and nearly planar ligand torsion angles, which further improves emission efficiency. Additionally, it was found that the coordination strength and identity of the counteranion can have a significant effect on the emission wavelength in the solid state. Hybrid materials were fabricated with a conductive, organic zinc metallopolymer and inorganic semiconducting ZnO nanoparticles (NPs) for photovoltaic applications. Electropolymerization allowed for tunability of the metallopolymer thickness and zinc seed points were evenly dispersed throughout, providing NP nucleation sites. ZnO NPs were grown directly on the conducting polymer backbone and all throughout the film, affording improved physical and electronic contact between the materials. Transmission electron microscopy confirmed that increasing the number of ZnO growth cycles from 4 to 6 resulted in an increase of the average NP diameter from 2.7 to 3.7 nm. Additionally, electrochemical studies revealed that as the diameter increased, the NP band gap decreased, following the quantum confinement effect.
Scientific and Technical Aerospace Reports
Author: Fungal Biopolymers and Biocomposites
Author: Sunil K. DeshmukhPublisher: Springer Nature
ISBN: 9811910006
Category : Science
Languages : en
Pages : 424
Book Description
The book covers an overview of fungal polymers, fungal mycelial biomass, and their applications besides providing a detailed account of various opportunities. This book also includes information on developments in mycotechnology related to fashion, furnishing, construction, packaging, mycelial-based bricks, construction binder, cementing materials, and so on. Other aspects include the value of chitin, chitosan, hydrophobins, lignocellulosic composites, oil recovery, biosurfactants and bioemulsifiers, nanofibers from pullulan, exopolymeric substances, bioresins, and biocomposites. Additional topics covered in the book include self-healing fungal concrete (which could help to build repairs) and recipe to inhibit fruit body formation, for living fungal biomaterial manufacture. There is no comprehensive book other than – some reviews, which addressed very brief historical developments and preliminary aspects of fungal biopolymers. Written by experts in their field from countries like Australia, India, USA, Germany, Turkey, Philippines, Oman, Belgium, Italy, Egypt, Brazil, and the United Kingdom, the chapters discuss at length applications of filamentous fungi in sustainable industrial pursuits and industrial developments with environmental safety. This book will be useful for students, teachers, researchers, and scientists in botany, microbiology, life sciences, biotechnology, agriculture and, industries that extensively use fungi for the production of value-added products.