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Author : Edward J. Swanson
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (429 download)
Download or read book Dual-plasma Synthesis of Coated Metal Nanoparticles with Controlled Surface Properties written by Edward J. Swanson and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jason Tavares
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Dual Plasma Synthesis of Functionalized Metal Nanoparticles written by Jason Tavares and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Cao Qin
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (316 download)
Download or read book Synthesis of Organic Layer-coated Metal Nanoparticles in a Dual-plasma Process written by Cao Qin and published by . This book was released on 2007 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effects of operating conditions such as reactor pressure and inert gas flow rate on the average size of the produced bare copper nanoparticles were studied. It was demonstrated that the metal nanoparticle size tends to decrease with decreasing reactor pressure, while inert gas flow rate has little influence on the mean nanoparticle size." --
Author : Sebastian Ekeroth
Publisher : Linköping University Electronic Press
ISBN 13 : 9176850099
Total Pages : 58 pages
Book Rating : 4.1/5 (768 download)
Download or read book Plasma Synthesis and Self-Assembly of Magnetic Nanoparticles written by Sebastian Ekeroth and published by Linköping University Electronic Press. This book was released on 2019-11-08 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials are important tools for enabling technological progress as they can provide dramatically different properties as compared to the bulk counterparts. The field of nanoparticles is one of the most investigated within nanomaterials, thanks to the existing, relatively simple, means of manufacturing. In this thesis, high-power pulsed hollow cathode sputtering is used to nucleate and grow magnetic nanoparticles in a plasma. This sputtering technique provides a high degree of ionization of the sputtered material, which has previously been shown to aid in the growth of the nanoparticles. The magnetic properties of the particles are utilized and makes it possible for the grown particles to act as building blocks for self-assembly into more sophisticated nano structures, particularly when an external magnetic field is applied. These structures created are termed “nanowires” or “nanotrusses”, depending on the level of branching and inter-linking that occurs. Several different elements have been investigated in this thesis. In a novel approach, it is shown how nanoparticles with more advanced structures, and containing material from two hollow cathodes, can be fabricated using high-power pulses. The dual-element particles are achieved by using two distinct and individual elemental cathodes, and a pulse process that allows tuning of individual pulses separately to them. Nanoparticles grown and investigated are Fe, Ni, Pt, Fe-Ni and Ni-Pt. Alternatively, the addition of oxygen to the process allows the formation of oxide or hybrid metal oxide – metal particles. For all nanoparticles containing several elements, it is demonstrated that the stoichiometry can be easily varied, either by the amount of reactive gas let into the process or by tuning the amount of sputtered material through adjusting the electric power supplied to the different cathodes. One aim of the presented work is to find a suitable material for the use as a catalyst in the production of H2 gas through the process of water splitting. H2 is a good candidate to replace fossil fuels as an energy carrier. However, rare elements (such as Ir or Pt) needs to be used as the catalyst, otherwise a high overpotential is required for the splitting to occur, leading to a low efficiency. This work demonstrates a possible route to avoid this, by using nanomaterials to increase the surface-to-volume ratio, as well as optimizing the elemental ratio between different materials to lower the amount of noble elements required.
Author : Lanbo Di
Publisher : MDPI
ISBN 13 : 3039286544
Total Pages : 234 pages
Book Rating : 4.0/5 (392 download)
Download or read book Plasma for Energy and Catalytic Nanomaterials written by Lanbo Di and published by MDPI. This book was released on 2020-12-29 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special Issue “Plasma for Energy and Catalytic Nanomaterials” highlights the recent progress and advancements in the synthesis and applications of energy and catalytic nanomaterials by plasma. Compared with conventional preparation methods, plasma provides a fast, facile, and environmentally friendly method for synthesizing highly efficient nanomaterials. The synthesized nanomaterials generally show enhanced metal–support interactions, small-sized metal nanoparticles, specific metal structures, and abundant oxygen vacancies. The plasma method allows thermodynamically and dynamically difficult reactions to proceed at low temperatures due to the activation of energetic electrons. Despite the growing interest in plasma for energy and catalytic nanomaterials, the synthesis mechanisms of nanomaterials using plasma still remain obscure due to the complicated physical and chemical reactions that occur during plasma preparation. The Guest Editors and the MDPI staff are therefore pleased to offer this Special Issue to interested reader, including graduate and Ph.D. students, postdoctoral researchers, and the entire community interested in the field of nanomaterials. We share the conviction that the Issue can serve as a useful tool for updating the literature and to aid with the conception of new production and/or research programs. Further dedicated R&D advances are possible based on new instruments and materials under development.
Author : Zhaoxia Qian
Publisher :
ISBN 13 :
Total Pages : 584 pages
Book Rating : 4.:/5 (99 download)
Download or read book Controlled Assembly of Metal Nanoparticles with Enhanced Optical Properties written by Zhaoxia Qian and published by . This book was released on 2014 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Controlled synthesis of metal nanoparticles is an important area of study because of the unique size and shape dependent properties of such nanoparticles. For example, gold and silver nanoparticles show distinct surface Plasmon resonance (SPR) bands varying with the size, shape and surface morphology of the nanoparticles. The assembly of these nanoparticles usually exhibit interesting collective optical properties different from their individual components. However, controlled synthesis and assembly of metal nanoparticles with high yield and enhanced optical properties is still challenging. In this thesis, I presented the synthesis of ultrathin gold/silver nanowires and sub-50 nm gold triangular nanoprisms by adopting silver seeds and benzyl dimethyl hexadecyl ammonium chloride (BDAC) in a seed-mediated growth method. Furthermore, I developed a templated surfactant-assisted seed growth method to synthesize gold nanoshells with varying surface morphologies by changing the type of surfactants and ions in the growth solution. The optical properties of the nanoshells could be controlled over a wide wavelength range by varying the surface morphology. By using a combination of BDAC surfactant and template surfactant-assisted seed growth method, isotropic shell-type gold nanoparticle clusters, or raspberry-like meta-molecules (raspberry-MMs), were successfully synthesized. The raspberry-MMs exhibited interesting far field and near field optical properties. The raspberry-MMs showed unusually strong magnetic resonances, yielding broad SPR bands in the visible and near-IR region. Both experimental data and finite-difference time-domain (FDTD) simulations showed that the magnetic dipole can be even larger than that of the electric dipole resonance in large raspberry-MMs. Moreover, I utilized Raman spectroscopy as a tool to probe the near field optical properties of the raspberry-MMs. Due to the existence of a large number of hotspots at the gaps among gold beads within individual raspberry-MMs, individual raspberry-MMs proved to be efficient Raman substrate. Importantly, the contribution from hotspots created at the gap between two adjacent raspberry-MMs is negligible compared to that from a large number of hotspots on individual raspberry-MMs. Consequently, the Raman signal intensity of the analyte molecules on the raspberry-MM dimers exhibited quite narrow distribution and is weakly dependent on the distance between the two raspberry-MMs. This paved the way for fabricating large-area raspberry-MM films which can serve as macroscopic efficient and reproducible Raman substrate. The robustness and tunability of the synthetic method presented in this thesis, the strong magnetic responses of the raspberry-MMs and the efficient Raman enhancement from single raspberry-MM, raspberry-MM dimer and films can lead to large-scale manufacture and wide applications of magnetic metamaterials as well as commercialization of uniform Raman substrate.
Author : Ken Ostrikov
Publisher : John Wiley & Sons
ISBN 13 : 3527611568
Total Pages : 315 pages
Book Rating : 4.5/5 (276 download)
Download or read book Plasma-Aided Nanofabrication written by Ken Ostrikov and published by John Wiley & Sons. This book was released on 2007-09-24 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this single work to cover the use of plasma as nanofabrication tool in sufficient depth internationally renowned authors with much experience in this important method of nanofabrication look at reactive plasma as a nanofabrication tool, plasma production and development of plasma sources, as well as such applications as carbon-based nanostructures, low-dimensional quantum confinement structures and hydroxyapatite bioceramics. Written principally for solid state physicists and chemists, materials scientists, and plasma physicists, the book concludes with the outlook for such applications.
Author : Bin Zhang
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (319 download)
Download or read book Thermal Plasma Synthesis and Photoinduced Coating of Aluminum Nanoparticles written by Bin Zhang and published by . This book was released on 2007 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Costica Caizer
Publisher : John Wiley & Sons
ISBN 13 : 1119754747
Total Pages : 512 pages
Book Rating : 4.1/5 (197 download)
Download or read book Magnetic Nanoparticles in Human Health and Medicine written by Costica Caizer and published by John Wiley & Sons. This book was released on 2021-09-08 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Nanoparticles in Human Health and Medicine Explores the application of magnetic nanoparticles in drug delivery, magnetic resonance imaging, and alternative cancer therapy Magnetic Nanoparticles in Human Health and Medicine addresses recent progress in improving diagnosis by magnetic resonance imaging (MRI) and using non-invasive and non-toxic magnetic nanoparticles for targeted drug delivery and magnetic hyperthermia. Focusing on cancer diagnosis and alternative therapy, the book covers both fundamental principles and advanced theoretical and experimental research on the magnetic properties, biocompatibilization, biofunctionalization, and application of magnetic nanoparticles in nanobiotechnology and nanomedicine. Chapters written by a panel of international specialists in the field of magnetic nanoparticles and their applications in biomedicine cover magnetic hyperthermia (MHT), MRI contrast agents, biomedical imaging, modeling and simulation, nanobiotechnology, toxicity issues, and more. Readers are provided with accurate information on the use of magnetic nanoparticles in diagnosis, drug delivery, and alternative cancer therapeutics—featuring discussion of current problems, proposed solutions, and future research directions. Topics include current applications of magnetic iron oxide nanoparticles in nanomedicine and alternative cancer therapy: drug delivery, magnetic resonance imaging, superparamagnetic hyperthermia as alternative cancer therapy, magnetic hyperthermia in clinical trials, and simulating the physics of magnetic particle heating for cancer therapy. This comprehensive volume: Covers both general research on magnetic nanoparticles in medicine and specific applications in cancer therapeutics Discusses the use of magnetic nanoparticles in alternative cancer therapy by magnetic and superparamagnetic hyperthermia Explores targeted medication delivery using magnetic nanoparticles as a future replacement of conventional techniques Reviews the use of MRI with magnetic nanoparticles to increase the diagnostic accuracy of medical imaging Magnetic Nanoparticles in Human Health and Medicine is a valuable resource for researchers in the fields of nanomagnetism, magnetic nanoparticles, nanobiomaterials, nanobioengineering, biopharmaceuticals nanobiotechnologies, nanomedicine, and biopharmaceuticals, particularly those focused on alternative cancer diagnosis and therapeutics.
Author : Zhong Xu
Publisher : Springer
ISBN 13 : 9811057249
Total Pages : 281 pages
Book Rating : 4.8/5 (11 download)
Download or read book Plasma Surface Metallurgy written by Zhong Xu and published by Springer. This book was released on 2017-09-21 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive introduction to and technical description of a unique patented surface-modification technology: plasma surface metallurgy with double-glow discharge plasma process, known as the Xu-Tec process. As such it promotes further attention and interest in scientific research and engineering development in this area, as well as industrial utilization and product commercialization. The Xu-Tec process has opened up a new material engineering field of “Plasma Surface Metallurgy”. This surface-modification process can transform many low-grade and low-cost industrial engineering materials into “gold” materials with a high value and high grade or special functions. This improved material can be widely used in industrial production to improve the surface performance and quality of mechanical parts and manufacturing products, and to conserve expensive alloying elements for the benefit of all mankind. “This book will be valuable to those in the general area of surface metallurgy. The substantial description of the Xu-Tec process is very important and should assist in expanding the use of this superior technique. The in-depth explanation of glow discharges and their use in general will also serve as a valuable reference in the field.” James E. Thompson, Prof. Fellow of the IEEE Dean of Engineering Emeritus University of Missouri, Columbia, Missouri, USA November, 2016 "A BREAKTHROUGH IN MAKING METAL TOUGHER". ---- SCIENCE & TECHNOLOGY Business Week, July 24, 1989 “NOVEL SURFACE ALLOYING PROCESS” --- THE LEADING EDGE TECHNOLOGY WORDWIDE Materials and Processing Report, Dec. 1987
Author : Anna Klinkova
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)
Download or read book Plasmonic and Catalytic Properties of Shape-Controlled Metal Nanoparticles and Their Assemblies written by Anna Klinkova and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ray M. Wong
Publisher :
ISBN 13 : 9781124908854
Total Pages : pages
Book Rating : 4.9/5 (88 download)
Download or read book Rapid Size-controlled Synthesis of Dextran-coated, Copper-doped Iron Oxide Nanoparticles written by Ray M. Wong and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of dual modality probes enabled for magnetic resonance imaging (MRI) and positron emission tomography (PET) has been on the rise in recent years due to the potential for these probes to facilitate combining the complementary high resolution of MRI and the high sensitivity of PET. The efficient synthesis of multimodal probes that include the radiolabels for PET can be hindered due to prolonged reaction times during radioisotope incorporation, and the resulting decay of the radiolabel. Along with a time-efficient synthesis, one also needs an optimal synthesis that yields products in a desirable size range (between 20-100 nm) to increase blood retention time. In this work, we describe a novel, rapid, microwave-based synthesis of dextran-coated iron oxide nanoparticles doped with copper (DIO/Cu). Traditional methods for synthesizing dextran-coated iron oxide particles require refluxing for 2 hours and result in approximately 50 nm particles. We demonstrate that microwave synthesis can produce 50 nm nanoparticles in 5 minutes of heating. We discuss the various parameters used in the microwave synthesis protocol to vary the size distribution of DIO/Cu, and demonstrate the successful incorporation of copper into these particles with the aim of future use for rapid 64Cu incorporation.
Author : Kayla Mae Roeser
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (96 download)
Download or read book Morphology Control of Noble Metal Nanoparticle Catalysts Using Strategic Organic Capping Agents in Colloidal Phase Synthesis written by Kayla Mae Roeser and published by . This book was released on 2014 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noble metals are the most sought after elements for catalysis because of their versatility, activity, and recyclability for a variety of applications; however they are limited as a resource and expensive. Noble metal nanoparticles offer a solution for use in catalysis because their high surface area to volume ratio maximizes their available surface sites while minimizing the amount of metal used. Additionally, particularly exposed facets of nanoparticles can increase surface energies for superior catalytic activity and induce novel electronic/physical properties. In the first chapter of my thesis, I synthesized palladium, platinum, and semiconductor titania nanoparticles through a biomimetic approach by using peptides to preferentially bind to and expose particular crystal facets of nanoparticles. Using a combinatorial approach called biopanning to find highly selective surface energy modifiers for particular facets of materials gave insight to unique binding motifs for materials as well as induced morphology controlled nanoparticles at ambient conditions. There are limitless combinations of solvents, capping agents, and inorganic precursors for inorganic nanoparticle synthesis. Understanding these systems in terms of more global trends would circumvent the current colossal approach of empirically screening systems. To do this, considering the inorganic-organic interfacial relationship is key. In the second chapter, I report unique aryl small molecules which preferentially bind to palladium surfaces through electrostatic potentials and epitaxial binding in nanoparticle synthesis. These results offer an understanding to the dynamic binding relationship between capping agents and nanoparticle surfaces. Lastly, I report on the synthesis of gold-palladium nanoparticles and their activity for the benzyl alcohol oxidation reaction. It was found that the (100) facets of gold-palladium were more catalytically active than the (111) surface. Details of the nanoparticle shape, size, and activity add to the understanding how this material behaves at the atomic level and will help to impact future advances in this field of catalysis. The syntheses described here are important because they are environmentally friendly, they offer information about the binding mechanisms at the organic-inorganic interface of the systems, and give insight to catalytic behavior. All of this work is necessary to further exploit nanoparticle synthesis, assembly and provide the precise engineering of nanostructured materials.
Author : Oleg O. Baranov
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1681739119
Total Pages : 92 pages
Book Rating : 4.6/5 (817 download)
Download or read book Advanced Concepts and Architectures for Plasma-Enabled Material Processing written by Oleg O. Baranov and published by Morgan & Claypool Publishers. This book was released on 2020-09-30 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma-based techniques are widely and successfully used across the field of materials processing, advanced nanosynthesis, and nanofabrication. The diversity of currently available processing architectures based on or enhanced by the use of plasmas is vast, and one can easily get lost in the opportunities presented by each of these configurations. This mini-book provides a concise outline of the most important concepts and architectures in plasma-assisted processing of materials, helping the reader navigate through the fundamentals of plasma system selection and optimization. Architectures discussed in this book range from the relatively simple, user-friendly types of plasmas produced using direct current, radio-frequency, microwave, and arc systems, to more sophisticated advanced systems based on incorporating and external substrate architectures, and complex control mechanisms of configured magnetic fields and distributed plasma sources.
Author : Franklin Jongmyung Kim
Publisher :
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.:/5 (35 download)
Download or read book Toward Metal Nanoarchitectonics written by Franklin Jongmyung Kim and published by . This book was released on 2005 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel L. Fedlheim
Publisher : CRC Press
ISBN 13 : 9780585404394
Total Pages : 348 pages
Book Rating : 4.4/5 (43 download)
Download or read book Metal Nanoparticles written by Daniel L. Fedlheim and published by CRC Press. This book was released on 2001-10-26 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art reference, Metal Nanoparticles offers the latest research on the synthesis, characterization, and applications of nanoparticles. Following an introduction of structural, optical, electronic, and electrochemical properties of nanoparticles, the book elaborates on nanoclusters, hyper-Raleigh scattering, nanoarrays, and several applications including single electron devices, chemical sensors, biomolecule sensors, and DNA detection. The text emphasizes how size, shape, and surface chemistry affect particle performance throughout. Topics include synthesis and formation of nanoclusters, nanosphere lithography, modeling of nanoparticle optical properties, and biomolecule sensors.
Author : American Chemical Society. Meeting
Publisher :
ISBN 13 :
Total Pages : 474 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nanoparticles written by American Chemical Society. Meeting and published by . This book was released on 2008 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book summarizes recent advances in methods to synthesize, stabilize, passivate and functionalize diverse nanoparticles from metals, metal oxides, semiconductors, polymers, organics and biomolecules. A wide range of potential appplications with nanoparticles as building blocks are described.
