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Fabrication of Palladium Nanoparticles and Nanoporous Alumina Templates

2005
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Release : 2005
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Book Synopsis Fabrication of Palladium Nanoparticles and Nanoporous Alumina Templates by : Pavani Chennapragada

Download or read book Fabrication of Palladium Nanoparticles and Nanoporous Alumina Templates written by Pavani Chennapragada. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Nanostructured materials have potential technological applications due to their characteristic dimensions. The material performance will depend on the atomic structure, and composition of these materials. This thesis focuses on proposing a reliable method for fabricating nanoporous alumina and palladium nanoparticles inside the templates. Palladium nanoparticles were synthesized in commercial porous alumina templates using electrodeposition. Pores within these nanoporous membranes act as templates for the synthesis of nanostructures of the desired material. Electrodeposition is achieved using a three-terminal set-up and a potentiostat. Different types of deposition techniques were investigated to improve the distribution of the deposit. The nanoparticles were characterized by SEM/EDX for composition. The commercial templates have high aspect ratio, but are not hexagonally ordered. Hence porous alumina was fabricated in the laboratory by anodization of aluminum.

Nano-Architectured and Nanostructured Materials

2006-03-06 Technology & Engineering
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Release : 2006-03-06
Genre : Technology & Engineering
Kind : eBook
Book Rating : 300/5 ( reviews)

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Book Synopsis Nano-Architectured and Nanostructured Materials by : Yannick Champion

Download or read book Nano-Architectured and Nanostructured Materials written by Yannick Champion. This book was released on 2006-03-06. Available in PDF, EPUB and Kindle. Book excerpt: The book identifies new nanometric architectures that would be of particular interest for applications and the technological route to reach them. Nano-architectures of interest are for optical, electrical, magnetic, mechanical properties and reactivity as well as for specific applications such as catalysis and medical diagnostic and drug delivery. Nano-architectures would be metals, alloys, ceramics, semi-conductors, polymers or hybrids inorganic-polymers materials. The book places special emphasis on crucial technical aspects of the fabrication, the control and the characterisation of complex nano-architectures.

Nanofabrication

2011-12-22 Science
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Release : 2011-12-22
Genre : Science
Kind : eBook
Book Rating : 126/5 ( reviews)

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Book Synopsis Nanofabrication by : Yoshitake Masuda

Download or read book Nanofabrication written by Yoshitake Masuda. This book was released on 2011-12-22. Available in PDF, EPUB and Kindle. Book excerpt: We face many challenges in the 21st century, such as sustainably meeting the world's growing demand for energy and consumer goods. I believe that new developments in science and technology will help solve many of these problems. Nanofabrication is one of the keys to the development of novel materials, devices and systems. Precise control of nanomaterials, nanostructures, nanodevices and their performances is essential for future innovations in technology. The book "Nanofabrication" provides the latest research developments in nanofabrication of organic and inorganic materials, biomaterials and hybrid materials. I hope that "Nanofabrication" will contribute to creating a brighter future for the next generation.

Synthesis and Characterization of Nanoporous Alumina Films and Their Application to Nanorod Array Fabrication

2011
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Release : 2011
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Book Synopsis Synthesis and Characterization of Nanoporous Alumina Films and Their Application to Nanorod Array Fabrication by : Negar Abolhassani Monfared

Download or read book Synthesis and Characterization of Nanoporous Alumina Films and Their Application to Nanorod Array Fabrication written by Negar Abolhassani Monfared. This book was released on 2011. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study is to synthesize and characterize the nanoporous structures that can be obtained by the anodization of thin film aluminum sputter deposited on a silicon wafer substrate. This study also investigated the application of nanoporous alumina to fabricate nanorod arrays by using preceramic polymers. Although there are many studies on the effect of anodizing conditions on anodized alumina, there are a few studies on anodizing of thin film aluminum. Anodized thin films of aluminum supported on silicon could have several applications that involve integrating the nanoporous structures into chemical and biological sensors and as templates for creating hierarchically complex nanostructures that are integrated with microelectronic circuits. In this study the different attributes of anodizing parameters in the synthesis of nanoporous structures on thin film aluminum compared to the results of studies on aluminum bulk is investigated. These differences can be due to attributes of the material, the resistance of the substrate and the reactions of substrate during anodizing. In this study the effects of different anodizing parameters and the contribution of each parameter were investigated using statistical approaches for quantification of pore sizes, their distributions and pore densities. This approach has never been previously used for studying the aluminum anodization. Until now, studies have always been based on average of the structure parameters with the hypothesis of homogeneity and uniformity of the structure which is not the case for anodization of thin film aluminum. To investigate the relative effect of each parameter, the Taguchi method and signal-to-noise calculation were applied. A new fabrication method for making nanorod arrays was introduced. In this method, nanoporous alumina was used as a casting mold for being filled by a preceramic polymer. KDT Ceraset polysilazane 20 (PSZ) and KDT Ceraset polyureasilazane (PUSZ) were two preceramic polymers which were selected for this purpose. To understand the changes in the chemical structure during the different steps of curing process of these preceramic polymers and also to find a better process for fabrication of nanorod arrays, the effect of curing conditions on these preceramic polymers were investigated.

Electrochemical Engineering Across Scales

2015-06-29 Science
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Release : 2015-06-29
Genre : Science
Kind : eBook
Book Rating : 452/5 ( reviews)

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Book Synopsis Electrochemical Engineering Across Scales by : Richard C. Alkire

Download or read book Electrochemical Engineering Across Scales written by Richard C. Alkire. This book was released on 2015-06-29. Available in PDF, EPUB and Kindle. Book excerpt: In Volume XV in the series "Advances in Electrochemical Science and Engineering" various leading experts from the field of electrochemical engineering share their insights into how different experimental and computational methods are used in transferring molecular-scale discoveries into processes and products. Throughout, the focus is on the engineering problem and method of solution, rather than on the specific application, such that scientists from different backgrounds will benefit from the flow of ideas between the various subdisciplines. A must-read for anyone developing engineering tools for the next-generation design and control of electrochemical process technologies, including chemical, mechanical and electrical engineers, as well as chemists, physicists, biochemists and materials scientists.

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