Multifunctional Core Shell Silica Particles
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Multifunctional Core Shell Silica Particles
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Author : Hooisweng Ow
language : en
Publisher:
Release Date : 2005
Multifunctional Core Shell Silica Particles written by Hooisweng Ow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Synthesis And Characterization Of Core Shell Silica Nanoparticles For Chemical Mechanical Planarization Of Low K Dielectric And Copper Wafers
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Author : Kannan Balasundaram
language : en
Publisher:
Release Date : 2010
Synthesis And Characterization Of Core Shell Silica Nanoparticles For Chemical Mechanical Planarization Of Low K Dielectric And Copper Wafers written by Kannan Balasundaram and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
ABSTRACT: Monodispersed core/shell silica particles with a hard core and microporous shell have been synthesized by surfactant template method. Ca. 75nm silica particles were used as core and Cetyltrimethylammonium bromide (C16TAB) as template for generating microporous shell. Concentration of the surfactant was varied and the growth of porous shell analyzed using high-resolution transmission electron microscopy and nitrogen adsorption. TGA and FTIR were used to confirm the surfactant removal after heat treatment. The synthesized particles were monodispersed and had a hard core and highly microporous shell with pore size in the range of 1.3-2.2nm and total pore volume in the range of 0.57-0.77cm3/g. The Chemical mechanical Planarization (CMP) performance of core/shell silica particles were analyzed and compared with that of core silica particles. Polishing was done on copper wafers and low-k dielectric material such as black diamond. The core/shell silica particles produced higher removal rates and better surface finish for both the wafers. Spectral reflectance technique and atomic force microscopy (AFM) were used as analyzing tool.
Multifunctional Thin Films Of Silica Zno Nanoparticles
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Author : Livia Naszályi Nagy
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2012
Multifunctional Thin Films Of Silica Zno Nanoparticles written by Livia Naszályi Nagy and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Today's technology has to aim at the environmental conscious development with new, environmentally friendly processes and materials. Nanotechnology presents eligible solutions to the challenges of modern materials science. It deals with small amount of matter (e.g. thin film), which - by its nanostructure and/or unusual composition - provides traditional bulk materials with new or improved functionalities. The aim of the present work was to elaborate multifunctional nanostructured thin layers for possible application as a) self-cleaning antireflective coating and b) active top layer on porous ceramic membranes coupling separation and photocatalysis or separation and chemisorption. Wet colloidal chemistry routes were used for the synthesis of silica, ZnO and silica/ZnO core/shell nanoparticles. Self-cleaning, antireflective coatings were obtained with Langmuir-Blodgett technique. Porous ceramic membranes were prepared for the coupling of separation with photocatalysis and separation with chemisorption using the dip coating technique.
Multifunctional Silver Nanoparticles
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Author : Hoang Nam Nguyen
language : en
Publisher:
Release Date : 2018
Multifunctional Silver Nanoparticles written by Hoang Nam Nguyen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Technology & Engineering categories.
Multifunctional silver nanoparticles have attracted widely due to their potential applications. Based on the properties of individual silver nanoparticles, such as plasmonic and antibacterial properties, silver nanoparticles can become multifunctional by surface modifications with various surfactants or they can be combined in core-shell and composite structures with the magnetic nanoparticles to form bifunctional nanoparticles. After reviewing the methods of synthesis and applications of silver nanoparticles, the chapter describes the synthesis and the properties of the new types of multifunctional silver nanomaterials based on the plasmonic behaviors of silver nanoparticles and the iron oxide Fe3O4 superparamagnetic nanoparticles. One type is a simple combination of silver nanoparticles and iron oxide nanoparticles in a silica matrix Fe3O4/Ag-4ATP@SiO2. Other types are the core-shell structured nanoparticles, where Fe3O4 nanoparticles play as the core and silver nanoparticles are the outer shell, so-called Fe3O4@SiO2-Ag and Fe3O4-Ag. In the Fe3O4@SiO2-Ag, silver nanoparticles are reduced on the surface of silica-coated magnetic core, while in Fe3O4-Ag, silver nanoparticles are directly reduced on the amino groups functionalized on the surface of magnetic nanoparticles without coating with silica. Both of types of the multifunctional silver nanoparticles show the plasmonic and magnetic properties similar as the individual silver and iron oxide nanoparticles. Finally, some applications of those multifunctional silver nanoparticles will be discussed.
Design Of Nanostructures For Theranostics Applications
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Author : Alexandru Mihai Grumezescu
language : en
Publisher: William Andrew
Release Date : 2018-01-15
Design Of Nanostructures For Theranostics Applications written by Alexandru Mihai Grumezescu and has been published by William Andrew this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-15 with Science categories.
Design of Nanostructures for Theranostics Applications focuses on the theranostics applications of nanostructures. In particular, multifunctional nanoparticles for diagnostics and treatment of different diseases, including those relating to the blood-brain barrier, are discussed in detail. Chapters explore different type of nanostructures, covering design, fabrication, functionalization and optimization, helping readers obtain the desired properties. Written by a diverse range of international academics, this book is a valuable reference resource for those working in both nanoscience and the pharmaceutical industry. Explores how the design of a range of nanomaterials make them effective theranostic agents, including multifunctional core-shell nanostructures, mesoporous silica nanoparticles, and quantum dots Shows how nanomaterials are used effectively for a range of diseases, including breast cancer, prostate cancer and neurological disorders Assesses the pros and cons of using different nanomaterials for different types of treatment
Deposition Of Aluminium Oxide Modified Core Shell Silica Particles Onto Silica Surfaces
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Author : Caroline Alexandra Hall
language : en
Publisher:
Release Date : 2010
Deposition Of Aluminium Oxide Modified Core Shell Silica Particles Onto Silica Surfaces written by Caroline Alexandra Hall and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Novel Copper Loaded Core Shell Silica Nanoparticles With Improved Copper Bioavailability
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Author : Pavithra Maniprasad
language : en
Publisher:
Release Date : 2011
Novel Copper Loaded Core Shell Silica Nanoparticles With Improved Copper Bioavailability written by Pavithra Maniprasad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Antibacterial agents categories.
A novel core-shell silica based antimicrobial nanoparticle was synthesized. The Stöber silica shell has been engineered to accommodate copper. Synthesis of the core-shell Cu-silica nanoparticle (C-S CuSiNP) involves preparation of base-hydrolyzed Stöber silica "seed" particles first, followed by the acid-catalyzed seeded growth of the Cu-silica shell layer around the core. Scanning electron microscopy and transmission electron microscopy showed monodispersed, spherical shaped nanoparticles with smooth surface morphology. Characterization of particle size distribution in solution by the Dynamic Light Scattering (DLS) technique was fairly consistent with the electron microscopy results. Loading of Cu to nanoparticles was confirmed by the SEM-Energy Dispersive X-Ray Spectroscopy (EDS) and Atomic Absorption Spectroscopy (AAS). Antibacterial efficacy of C-S CuSiNP was evaluated against E.coli and B.subtilis using Cu hydroxide ("Insoluble" Cu compound) and copper sulfate as positive control and silica "seed" particles (without Cu loading) as negative control. Minimum Inhibitory Concentration (MIC) of C-S CuSiNP was evaluated by measuring the fluorescent intensity of resorufin to determine the decrease in viable cells with increase in copper concentration in C-S CuSiNP. The MIC value of C-S CuSiNP against both E.coli and B.subtilis was estimated to be 4.9 ppm. Bac-light fluorescence microscopy based assay was used to count relative population of the live and dead bacteria cells. Antibacterial study clearly shows that C-S CuSiNP is more effective than insoluble Cu hydroxide particles and copper sulfate at equivalent metallic Cu concentration, suggesting more soluble Cu in C-S CuSiNP material due to its core-shell design. Keywords: core-shell nanoparticle, copper loaded silica, antibacterial, sol-gel, copper biocide.
Incorporation Of Silica Into Baroplastic Core Shell Nanoparticles
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Author : Sheldon A. Hewlett
language : en
Publisher:
Release Date : 2006
Incorporation Of Silica Into Baroplastic Core Shell Nanoparticles written by Sheldon A. Hewlett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
(Cont.) The pre-emulsion strategy resulted in a decrease in particle size for the core-shell-shell nanoparticles, as shown by dynamic light scattering. Excess silica in the emulsion resulted in phase separation and opaque, brittle samples. Samples made with this incorporation strategy showed poor mechanical properties. The post-emulsion strategy also resulted in poor processing. SAXS data show that there is no long range ordering with the SiO2 and core-shell nanoparticles. However, SAXS did show the possibility of a nanopcomposite with short range ordering of silica and core-shell particles.
Core Shell Nanostructures For Drug Delivery And Theranostics
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Author : Maria Focarete
language : en
Publisher: Woodhead Publishing
Release Date : 2018-06-29
Core Shell Nanostructures For Drug Delivery And Theranostics written by Maria Focarete and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-29 with Technology & Engineering categories.
Core-Shell Nanostructures for Drug Delivery and Theranostics: Challenges, Strategies and Prospects for Novel Carrier Systems contains valuable chapters that deal with the fundamentals of nanotechnology for drug delivery, recent developments and research in core-shell nanoparticles for drug-delivery and theranostic applications, and the potential and applications of core-shell nanofiber. This book is a highly valuable resource for scientists interested in the design and development of innovative drug delivery systems, researchers and graduate/postdoctoral students engaged in biomaterials for drug delivery, and R&D managers in the biomaterials and pharmaceutical industry. Focuses on core-shell nanoparticles and nanofiber for innovative applications, including cancer therapy, controlled release and multi-drug release Considers future prospects and potential new applications of core-shell nanostructures for drug delivery and theranostics Explains the principles and essential concepts of nanotechnology for drug delivery systems
Nanocomposite Particles For Bio Applications
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Author : Tito Trindade
language : en
Publisher: CRC Press
Release Date : 2011-08-08
Nanocomposite Particles For Bio Applications written by Tito Trindade and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-08 with Medical categories.
This book provides a concise state of the art of the synthesis and properties of nanocomposite particles with interest for diverse bio-applications. Contributions are mainly related to the chemical design of nanocomposite particles, their properties as well as their constituent materials, and the tailoring of bio-interfaces that may be relevant to