Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Surface Modification and Electronic Structure Characterisation of Carbon-based and Iron-based Materials
Author: Surface Modification and Electronic Structure Characterisation of Carbon-based and Iron-based Materials
Author: Di HuPublisher:
ISBN:
Category : Materials science
Languages : en
Pages : 0
Book Description
This thesis provides an important basis for understanding the surface modulation mechanism and electronic structure variation on semiconducting surfaces and metallic thin films. The use of real-time photoelectron spectroscopy (REES) makes it possible to monitor the solid surfaces during insitu processing. The surfaces that have been investigated were (100) facet boron-doped diamond surfaces and iron thin films. The surface processing treatments include annealing, thin film coating and exposure to oxygen and hydrogen microwave plasma sources.The oxygen-terminated (100) facet diamond was annealed up to 1000°C while monitoring with REES. The oxygen desorption process on the surface can be divided into four distinct stages according the oxygen concentration on the diamond (100) surface during the heating cycle. The ratio of ketone/ether groups has been investigated. Moreover, the true band bending on O-terminated (100) has been investigated with real-time characterization, which has a maximum difference of +1.0 eV comparing with the room temperature XPS spectra data. Fluorouracil (5-FU), as a drug widely used in leukaemia and bowel cancer treatment, which is demonstrated to degrade on silver coated catheter surfaces,producing hydrofluoric acid and therefor leading to adverse effects on patients. In order to compare diamond as coating material, the adsorption of5-FU on the oxygen and hydrogen terminated diamond (100) surfaces has been studied with x-ray photoelectron spectroscopy (XPS), showing extremely different behaviours.Utilising the shape memory alloy (SMA) substrate, the continuously mediated strain was transferred from the substrate to Fe films through a thermally controlled shape memory effect. The pure strain modulated electronic structure in the Fe thin films was studied using in situ XPS and first-principle calculations.The result demonstrates that the compressive strain increases the overlap of outer orbits and enhances the shielding effect to core electrons, resulting insignificant tunability on the binding energy of core electrons and relatedmagnetic anisotropy.
Carbon Based Electronic Devices
Author: Alberto TagliaferroPublisher: MDPI
ISBN: 3039282328
Category : Technology & Engineering
Languages : en
Pages : 258
Book Description
For more than 50 years, silicon has dominated the electronics industry. However, this growth will come to an end, due to resources limitations. Thus, research developments need to focus to alternative materials, with higher performance and better functionality. Current research achievements have indicated that carbon is one of the promising candidates for its exploitation in the electronics industry. Whereas the physical properties of graphite and diamond have been investigated for many years, the potential for electronic applications of other allotropes of carbon (fullerenes, carbon nanotubes, carbon nanofibres, carbon films, carbon balls and beads, carbon fibers, etc), has only been appreciated relatively recently. Carbon-based materials offer a number of exciting possibilities for new applications of electronic devices, due to their unique thermal and electrical properties. However, the success of carbon-based electronics depends on the rapid progress of the fabrication, doping and manipulation techniques. In this Special Issue, we focus on both insights and advancements in carbon-based electronics. We will also cover various topics ranging from synthesis, functionalisation, and characterisation of carbon-based materials, for their use in electronic devices, including advanced manufacturing techniques, such as 3D printing, ink-jet printing, spray-gun technique, etc.
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
Design, Fabrication, and Characterization of Multifunctional Nanomaterials
Author: Sabu ThomasPublisher: Elsevier
ISBN: 012820883X
Category : Technology & Engineering
Languages : en
Pages : 610
Book Description
Design, Fabrication, and Characterization of Multifunctional Nanomaterials covers major techniques for the design, synthesis, and development of multifunctional nanomaterials. The chapters highlight the main characterization techniques, including X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, energy dispersive X-ray spectroscopy, and scanning probe microscopy.The book explores major synthesis methods and functional studies, including: - Brillouin spectroscopy; - Temperature-dependent Raman spectroscopic studies; - Magnetic, ferroelectric, and magneto-electric coupling analysis; - Organ-on-a-chip methods for testing nanomaterials; - Magnetron sputtering techniques; - Pulsed laser deposition techniques; - Positron annihilation spectroscopy to prove defects in nanomaterials; - Electroanalytic techniques. This is an important reference source for materials science students, scientists, and engineers who are looking to increase their understanding of design and fabrication techniques for a range of multifunctional nanomaterials. - Explains the major design and fabrication techniques and processes for a range of multifunctional nanomaterials; - Demonstrates the design and development of magnetic, ferroelectric, multiferroic, and carbon nanomaterials for electronic applications, energy generation, and storage; - Green synthesis techniques and the development of nanofibers and thin films are also emphasized.
Electronic Structure and Reactivity of Metal Surfaces
Author: E. DerouanePublisher: Springer Science & Business Media
ISBN: 1468427962
Category : Science
Languages : en
Pages : 636
Book Description
Imagine that a young physicist would approach a granting agen cy and propose to contribute to heterogeneous catalysis by studying the heat conductivity of gases in contact with a hot filament. How would he be received now? How would he have been treated sixty years ago ? Yet, more than sixty years ago, Irving Langmuir, through his study of heat transfer from a tungsten filament, uncovered most of the fundamental ideas which are used to-day by the scientific com munity in pure and applied heterogeneous catalysis. Through his work with what were for the first time "clean" metal surfaces, Langmuir formulated during a period of a little over ten years un til the early thirties, the concepts of chemisorption, monolayer, adsorption sites, adsorption isotherm, sticking probability, cata lytic mechanisms by way of the interaction between chemisorbed spe cies, behavior of non-uniform surfaces and repulsion between adsor bed dipoles. It is fair to say that many of these ideas constituting the first revolution in surface chemistry have since been refined through thousands of investigations. Countless papers have been pu blished on the subject of the Langmuir adsorption isotherm, the Langmuir catalytic kinetics and the Langmuir site-exclusion adsorp tion kinetics. The refinements have been significant. ThE original concepts in their primitive or amended form are used everyday by catalytic chemists and chemical engineers allover the world in their treatment of experimental data, design of reactors or inven tion of new processes.
Electronic Structure and Transport Properties of Carbon Based Materials
Author: Anders HanssonPublisher:
ISBN: 9789185497119
Category :
Languages : en
Pages : 76
Book Description
Scientific and Technical Aerospace Reports
Author: Graphene Science Handbook, Six-Volume Set
Author: Mahmood AliofkhazraeiPublisher: CRC Press
ISBN: 1466591196
Category : Science
Languages : en
Pages : 3379
Book Description
Graphene is the strongest material ever studied and can be an efficient substitute for silicon. This six-volume handbook focuses on fabrication methods, nanostructure and atomic arrangement, electrical and optical properties, mechanical and chemical properties, size-dependent properties, and applications and industrialization. There is no other major reference work of this scope on the topic of graphene, which is one of the most researched materials of the twenty-first century. The set includes contributions from top researchers in the field and a foreword written by two Nobel laureates in physics. Volumes in the set: K20503 Graphene Science Handbook: Mechanical and Chemical Properties (ISBN: 9781466591233) K20505 Graphene Science Handbook: Fabrication Methods (ISBN: 9781466591271) K20507 Graphene Science Handbook: Electrical and Optical Properties (ISBN: 9781466591318) K20508 Graphene Science Handbook: Applications and Industrialization (ISBN: 9781466591332) K20509 Graphene Science Handbook: Size-Dependent Properties (ISBN: 9781466591356) K20510 Graphene Science Handbook: Nanostructure and Atomic Arrangement (ISBN: 9781466591370)
Physics and Chemistry of Graphene
Author: Toshiaki EnokiPublisher: CRC Press
ISBN: 9814241482
Category : Science
Languages : en
Pages : 478
Book Description
From a chemistry aspect, graphene is the extrapolated extreme of condensed polycyclic hydrocarbon molecules to infinite size. Here, the concept on aromaticity which organic chemists utilize is applicable. Interesting issues appearing between physics and chemistry are pronounced in nano-sized graphene (nanographene), as we recognize the importance of the shape of nanographene in understanding its electronic structure. In this book, the fundamental issues on the electronic, magnetic, and chemical properties of condensed polycyclic hyodrocarbon molecules, nanographene and graphene are comprehensively discussed.