Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Efficient Template Based Nanomanufacturing Of Carbon Nanotube Arrays For Cell Applications
Download Efficient Template Based Nanomanufacturing Of Carbon Nanotube Arrays For Cell Applications full books in PDF, epub, and Kindle. Read online Efficient Template Based Nanomanufacturing Of Carbon Nanotube Arrays For Cell Applications ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Efficient Template-based Nanomanufacturing of Carbon Nanotube Arrays for Cell Applications by : Adeel Ahmed
Download or read book Efficient Template-based Nanomanufacturing of Carbon Nanotube Arrays for Cell Applications written by Adeel Ahmed and published by . This book was released on 2017 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Carbon nanotube arrays have been found to be highly effective at carrying out intracellular delivery of cargo at high efficiencies while ensuring cell viability. Template based chemical vapor deposition is a commonly used process to fabricate these arrays. However, current etching methods used to expose carbon nanotubes from templates are expensive and time consuming. The high cost and time-consuming processes currently required to fabricate such arrays are factors which limit the commercialization of this technology and inhibit scope for larger research programs. In this thesis, alternative nanofabrication methods were explored with the aim of making the fabrication of CNT arrays cost effective and efficient. Mechanical polishing coupled with wet chemical etching is shown as a feasible alternative option to dry etching. The effects of process variables on physical properties of CNT arrays have been studied and quantified in order to demonstrate control over the process. Scanning Electron Microscopy has been used to qualitatively understand the differences between CNT arrays fabricated using dry etching and the alternative process. Cell culture has been demonstrated on the CNT arrays and the potential to use 3D printing to fabricate a nanofluidic device is also demonstrated. The alternative process can save etching time by 97% while maintaining a similar level of control over the process. This study, therefore, opens the path to quicker production of CNT arrays at low cost for biomedical use."--Abstract.
Book Synopsis Improving Template-based Nanomanufacturing of Carbon Nanotube Arrays Via Polishing Wet Etching Method by : Kosar Samadi
Download or read book Improving Template-based Nanomanufacturing of Carbon Nanotube Arrays Via Polishing Wet Etching Method written by Kosar Samadi and published by . This book was released on 2020 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Multifunctional carbon nanotubes (CNTs) enable novel ways of interacting with complex biological fluid environments, such as single living cells and tissues. It has been shown that vertically aligned carbon nanotube arrays can be utilized to deliver genes into cells with high efficiency. These arrays were produced through template-based nanomanufacturing, where chemical vapor deposition forms carbon nanotubes inside the pores and oxygen plasma and reactive ion etching (RIE) expose the tubes by selective etching. The same devices could be produced faster and cheaper by replacing oxygen plasma and RIE with mechanical polishing and wet etching. However, the biomedical utilization of CNT-based technology has been hindered by inconsistencies in fabrication of effective CNT arrays which can facilitate fluid transport and gene transfer. In this research, the polishing process of CNT arrays was examined to identify the source of variability in results and developing solutions to overcome the issues. To this end, the capabilities and limitations of the current polishing step was tested using multiple characterization techniques, different variables were investigated, several alternative techniques were developed and explored and the best solutions considering the current restrictions were proposed. The results of this study will contribute to building the platform for a consistent scaled up technology for probing multiple cells in parallel and providing substrates for wearable or implantable biological sensors."--Abstract.
Book Synopsis Carbon Nanotube Arrays for Intracellular Delivery and Biological Applications by : Masoud Golshadi
Download or read book Carbon Nanotube Arrays for Intracellular Delivery and Biological Applications written by Masoud Golshadi and published by . This book was released on 2016 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Introducing nucleic acids into mammalian cells is a crucial step to elucidate biochemical pathways, modify gene expression in immortalized cells, primary cells, and stem cells, and intoduces new approaches for clinical diagnostics and therapeutics. Current gene transfer technologies, including lipofection, electroporation, and viral delivery, have enabled break-through advances in basic and translational science to enable derivation and programming of embryonic stem cells, advanced gene editing using CRISPR (Clustered regularly interspaced short palindromic repeats), and development of targeted anti-tumor therapy using chimeric antigen receptors in T-cells (CAR-T). Despite these successes, current transfection technologies are time consuming and limited by the inefficient introduction of test molecules into large populations of target cells, and the cytotoxicity of the techniques. Moreover, many cell types cannot be consistently transfected by lipofection or electroporation (stem cells, T-cells) and viral delivery has limitations to the size of experimental DNA that can be packaged. In this dissertation, a novel coverslip-like platform consisting of an array of aligned hollow carbon nanotubes (CNTs) embedded in a sacrificial template is developed that enhances gene transfer capabilities, including high efficiency, low toxicity, in an expanded range of target cells, with the potential to transfer mixed combinations of protein and nucleic acids. The CNT array devices are fabricated by a scalable template-based manufacturing method using commercially available membranes, eliminating the need for nano-assembly. High efficient transfection has been demonstrated by delivering various cargos (nanoparticles, dye and plasmid DNA) into populations of cells, achieving 85% efficiency of plasmid DNA delivery into immortalized cells. Moreover, the CNT-mediated transfection of stem cells shows 3 times higher efficiency compared to current lipofection methods. Evaluating the cell-CNT interaction elucidates the importance of the geometrical properties of CNT arrays (CNT exposed length and surface morphology) on transfection efficiency. The results indicate that densely-packed and shortly-exposed CNT arrays with planar surface will enhance gene delivery using this new platform. This technology offers a significant increase in efficiency and cell viability, along with the ease of use compared to current standard methods, which demonstrates its potential to accelerate the development of new cell models to study intractable diseases, decoding the signaling pathways, and drug discovery."--Abstract.
Book Synopsis Aligned Carbon Nanotubes by : Zhifeng Ren
Download or read book Aligned Carbon Nanotubes written by Zhifeng Ren and published by Springer Science & Business Media. This book was released on 2012-09-05 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a survey of the physics and fabrication of carbon nanotubes and their applications in optics, electronics, chemistry and biotechnology. It focuses on the structural characterization of various carbon nanotubes, fabrication of vertically or parallel aligned carbon nanotubes on substrates or in composites, physical properties for their alignment, and applications of aligned carbon nanotubes in field emission, optical antennas, light transmission, solar cells, chemical devices, bio-devices, and many others. Major fabrication methods are illustrated in detail, particularly the most widely used PECVD growth technique on which various device integration schemes are based, followed by applications such as electrical interconnects, nanodiodes, optical antennas, and nanocoax solar cells, whereas current limitations and challenges are also be discussed to lay the foundation for future developments.
Book Synopsis Carbon Nanotubes by : Ann Rose Abraham
Download or read book Carbon Nanotubes written by Ann Rose Abraham and published by CRC Press. This book was released on 2022-10-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book discusses a selection of advanced topics on carbon nanotubes—their extraordinary properties, structure, design, fabrication, development, engineering, functionalization, carbon nanotube enabled nanocomposites, characterization, and, moreover, their utility in many applications. The volume highlights the amazing potential of advanced CNT composites in automotive, aeronautics, spacecrafts, transistors replacing Si electronics, energy, purification, hydrogen storage, tissue regeneration, electrochemical supercapacitors, sensing, biomedical applications, agriculture, energy, and technical applications. The book specifically discusses the applications of carbon nanotubes for a greener environment, as well as applications for biomedical uses, in drug delivery, and in display technology. It also explores the uses of CNTs in the energy and aerospace industries, such as for solar energy conversion, as a lubricant additive for enhancing energy efficiency, and more. Other chapters explore the potential of carbon nanotubes in hydrogen storage and carbon nanotube electronics.
Book Synopsis Syntheses and Applications of Carbon Nanotubes and Their Composites by : Satoru Suzuki
Download or read book Syntheses and Applications of Carbon Nanotubes and Their Composites written by Satoru Suzuki and published by BoD – Books on Demand. This book was released on 2013-05-09 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are rolled up graphene sheets with a quasi-one-dimensional structure of nanometer-scale diameter. In these last twenty years, carbon nanotubes have attracted much attention from physicists, chemists, material scientists, and electronic device engineers, because of their excellent structural, electronic, optical, chemical and mechanical properties. More recently, demand for innovative industrial applications of carbon nanotubes is increasing. This book covers recent research topics regarding syntheses techniques of carbon nanotubes and nanotube-based composites, and their applications. The chapters in this book will be helpful to many students, engineers and researchers working in the field of carbon nanotubes.
Book Synopsis Carbon Nanotubes for a Green Environment by : Shrikaant Kulkarni
Download or read book Carbon Nanotubes for a Green Environment written by Shrikaant Kulkarni and published by CRC Press. This book was released on 2022-06-30 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Nanotubes for a Green Environment: Balancing the Risks and Rewards describes the synthesis, characterization, and unique applications of undoped and doped carbon nanotubes as well as hybrids of them with grapheme or nanocomposites, focusing on green aspects of carbon nanotube applications. The volume shows new approaches used for tapping the potential and promise of key materials in isolation or combined with other materials. The research-oriented chapters highlight a spectrum of applications of carbon nanotubes as novel materials for energy storage as well as for environmental remediation, wastewater treatment, green health care products, and more. Chapters explore the use of carbon nanotubes for remediation methods for wastewater treatment such as by using graphene oxide-carbon nanotube composites and by applying undoped and doped carbon nanotubes for removing contaminates. The book also looks at the application of carbon nanotubes for enhanced oil recovery and for heavy metal separation. Other chapters look at the rheological behavior of carbon nanotubes-based materials and their role in processing for various products, the thermal and electrical transport in carbon nanotubes composites, carbon nanotubes-based composite materials for electromagnetic shielding applications. The biomedical applications of carbon nanotube-based nanomaterials also explored, such as FTIR spectroscopy.
Book Synopsis Three-Dimensional Nanoarchitectures by : Weilie Zhou
Download or read book Three-Dimensional Nanoarchitectures written by Weilie Zhou and published by Springer Science & Business Media. This book was released on 2011-08-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Devices built from three-dimensional nanoarchitectures offer a number of advantages over those based on thin-film technology, such as larger surface area to enhance the sensitivity of sensors, to collect more sunlight to improve the efficiency of solar cells, and to supply higher density emitters for increased resolution in flat panel displays. Three-dimensional nanoscale assembly has already been used to generate many prototypes of devices and sensors, including piezoelectric nanogenerators based on ZnO nanowire arrays, photovoltaic devices based on silicon nanowire array p-n junctions, and highly sensitive gas sensors based on metal oxide nanowire arrays among others. Three-Dimensional Nanoarchitectures: Designing Next-Generation Devices describes state-of-the-art synthesis, integration, and design strategies used to create three-dimensional nanoarchitectures for functional nanodevice applications. With a focus on synthesis and fabrication methods for three-dimensional nanostructure assembly and construction, coverage includes resonators, nanophotonics, sensors, supercapacitors, solar cells, and more. This book is an essential reference for a broad audience of researchers in materials science, chemistry, physics, and electrical engineering who want the latest information on synthesis routes and assembly methods. Schematics of device integration and mechanisms as well as plots of measurement data are included.
Book Synopsis Single-Walled Carbon Nanotubes by : Yan Li
Download or read book Single-Walled Carbon Nanotubes written by Yan Li and published by Springer. This book was released on 2019-05-16 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.
Book Synopsis Nanotechnology in Fuel Cells by : Huaihe Song
Download or read book Nanotechnology in Fuel Cells written by Huaihe Song and published by Elsevier. This book was released on 2022-02-23 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology in Fuel Cells focuses on the use of nanotechnology in macroscopic and nanosized fuel cells to enhance their performance and lifespan. The book covers the fundamental design concepts and promising applications of nanotechnology-enhanced fuel cells and their advantages over traditional fuel cells in portable devices, including longer shelf life and lower cost. In the case of proton-exchange membrane fuel cells (PEMFCs), nano-membranes could provide 100 times higher conductivity of hydrogen ions in low humidity conditions than traditional membranes. For hydrogen fuel cell, nanocatalysts (Pt hybrid nanoparticles) could provide 12 times higher catalytic activity. This is an important reference source for materials scientists and engineers who are looking to understand how nanotechnology is being used to create more efficient macro- and nanosized fuel cells. Outlines how fuel cells can be nanoengineered to enhance their performance and lifespan Covers a variety of fuel cell types, including proton-exchange membrane fuel cells and hydrogen-based fuel cells Assesses the major challenges of nanoengineering fuel cells at an industrial scale
Book Synopsis Nanotechnology for Lithium-Ion Batteries by : Yaser Abu-Lebdeh
Download or read book Nanotechnology for Lithium-Ion Batteries written by Yaser Abu-Lebdeh and published by Springer Science & Business Media. This book was released on 2012-10-17 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique combined analysis of two scientific success stories—lithium-ion batteries and nanotechnology—has contributions from leading international experts who analyze the positive interplay between them, as well as future developments in energy storage.
Book Synopsis Fabrication of Multibore Carbon Nanopipettes Using a Template-based Nanomanufacturing Process by : Ayomipo Arowosola
Download or read book Fabrication of Multibore Carbon Nanopipettes Using a Template-based Nanomanufacturing Process written by Ayomipo Arowosola and published by . This book was released on 2015 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Currently, cancer accounts for nearly 1 of every 4 deaths in the United States which rates it as the second most common cause of death in the US, exceeded only by heart diseases. The detection, prevention and treatment of these death-causing diseases have necessitated and led to the development of novel tools for interfacing with single live cells -- intracellular cell physiology. A major challenge, preventing the realization of effective and efficient intracellular physiology, is the lack of minimally invasive, nanoscale electrodes capable of probing cells without causing cell damage or death. Previous studies have succeeded in fabricating single nanoscale electrodes suitable for cell probing, but in this research, we introduce the controllable fabrication of Multibore Carbon Nanopipettes (MCNPs) -- nanoscale probes with multiple, independent hollow carbon nanoscale electrodes within one very small tip -- in three stages: (i) forming templates by pulling micropipettes from theta glass capillaries (pipette pulling); (ii) selectively depositing carbon via CVD on the lumen walls of the micropipette (carbon deposition); and (iii) exposing the two carbon nanostructures formed at the micropipette tip with selective wet-etching (carbon exposure). These MCNPs, suitable for cell probing, also incorporate a multifunctionality that is yet to be seen in existing microelectrodes. Here, we present the step-by-step, repeatable methodology in fabricating MCNPs, the governing parameters at different stages of fabrication and the effects of varying these parameters. We establish that the MCNP geometry can be defined at the pulling stage, where the taper length and diameter of the pipette have an inverse relationship; carbon thickness is defined at the carbon deposition stage and the carbon exposure stage defines the exposed carbon length. We also showed the capability of our MCNPs for intracellular injection by demonstrating their effectiveness in fluid transport and delivery. The fabrication technique offers a repeatable and low cost process of manufacturing MCNPs, thereby making it a commercially viable nanomanufacturing technique that will enable numerous intracellular applications beyond cell probing. Finally, the continuous development of the MCNPs for these numerous intracellular applications may bring about a reform in single cell analysis, biomedical research and disease pathology research."--Abstract.
Book Synopsis Template-Growth of Highly Ordered Carbon Nanotube Arrays on Silicon POSTPRINT. by :
Download or read book Template-Growth of Highly Ordered Carbon Nanotube Arrays on Silicon POSTPRINT. written by and published by . This book was released on 2006 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper reports on the success in and the key conditions for direct growth or carbon nanotubes or unprecedented uniformity on silicon. The uniformity is ensured through the growth within the highly ordered nanopores or an alumina oxide template, which is in turn formed on silicon through anodization of aluminum of unprecedented thickness evaporated on silicon. The formation of highly ordered nanopore array by anodization of thick aluminum evaporated on a noncompliant substrate such as silicon is made possible through a specially designed process for evaporating thick aluminum of high quality and good adhesion.
Book Synopsis Nanotechnology for Sustainable Manufacturing by : David Rickerby
Download or read book Nanotechnology for Sustainable Manufacturing written by David Rickerby and published by CRC Press. This book was released on 2014-06-18 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology has the potential to play an important role in increasing the sustainability of a wide range of industrial sectors. Nanomaterials could contribute to more sustainable manufacturing through cleaner, less wasteful production processes and can substitute conventional materials, leading to savings in raw materials and energy. Nanotechnol
Book Synopsis Capillary Densification and Adhesion Tuning of Aligned Carbon Nanotube Arrays for Shape-engineerable Architectures by : Ashley Louise Kaiser
Download or read book Capillary Densification and Adhesion Tuning of Aligned Carbon Nanotube Arrays for Shape-engineerable Architectures written by Ashley Louise Kaiser and published by . This book was released on 2019 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advantaged intrinsic and scale-dependent properties of aligned nanofibers (NFs), such as carbon nanotubes (CNTs), and their ability to be self-assembled by capillary forces motivates their use as shape-engineerable materials. In order to achieve facile and accurate patterning and densification of NFs into new architectures, a mechanistic understanding of the parameters governing NF synthesis, densification, and substrate adhesion is needed. Here, parametric experiments and models are developed to evaluate the scaling of NF-substrate adhesion strength (Fa) of mm-scale tall aligned CNT arrays as a function of CNT growth time (tg), and to control the solvent-based capillary densification of sub-mm-scale tall CNT arrays into cell and pin structures, which have tunable geometries based on CNT height, Fa, and, if used, the as-grown CNT array pattern size (s). One-dimensional scaling relations are presented that accurately predict the morphology of these capillary-densified CNTs exhibiting multiple spatial scales, including long-range cellular networks formed from bulk-scale CNT arrays, and solid, micron-scale pins formed via the densification of patterned CNT arrays below and at the critical s that separates cell vs. pin formation. The effective CNT array elastic modulus (E), and not the orders-of-magnitude higher isolated CNT axial modulus, is found to govern the width, area, wall thickness, and volume fraction of the densified cells and pins. E is about an order of magnitude smaller for pins as compared to cell networks formed from bulk-scale (i.e., non-patterned) CNT arrays, and patterning therefore results in pins with a lower packing density (commensurate with double the wall thickness) and a larger characteristic spacing than bulk cell networks. Further increasing s recovers the bulk-scale cell scaling relations, as the cell geometry plateaus for s>~~ 1000 [mu]m. Additional tuning of the cell network geometry is possible by altering Fa via a simple post-growth annealing step. However, while controlling this adhesion is needed for bulk-scale manufacturing and application-specific performance, experimental and theoretical approaches to date have neglected to address the scaling of Fa with tg, a crucial process parameter governing CNT synthesis, structure, and properties. Here, the non-monotonic scaling of Fa with tg is measured experimentally via uniform tensile CNT array separation from a flat growth substrate and modeled analytically based on atomic and meso-scale CNT evolution using contact mechanics. CNT growth termination is marked by a reduction in CNT number density and a plateau in array height, signifying the transition between two distinct process-structure-property scaling regimes. At this growth termination point, experiments and modeling indicate a one- and two-orders-of-magnitude increase in Fa and E, respectively. Here, the observed increase in CNT wall thickness and sp3 bond character with tg shows that the accumulation of turbostratic carbon species in the CNT array contributes to the evolving mechanical response. Future paths of study are recommended to extend this work towards two-dimensional capillary densification of NF arrays and Fa tunability via post-processing, which would allow for the densification of taller NF arrays (towards mm- and cm-scales) to expand the suitability of these materials for a broader range of applications. Collectively, these results enable the use of capillary densification and tunable NF-substrate adhesion for the design and manufacture of bulk nanoengineered materials and emerging nanoscale technologies.
Book Synopsis Nano-Scale Wettability and Adhesion of Free-Standing Capped Carbon Nanotube Arrays by : Miray Ouzounian
Download or read book Nano-Scale Wettability and Adhesion of Free-Standing Capped Carbon Nanotube Arrays written by Miray Ouzounian and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Countless organisms in nature have adapted high-aspect-ratio micro-/nano- fibrillar arrays on their functional surfaces for achieving special and often optimized functionalities using earthly abundant materials. Given a particular local environment, these 'natural designs' are intrinsically multifunctional, responsive to external stimuli, biocompatible, biodegradable, energy efficient and effective. One common challenge these natural fibrillar systems have to deal with is the presence of environmental water in all its three forms (i.e., vapor, liquid or solid) surrounding their habitats. This offers intriguing design inspirations for human engineering in energy, biomedical, and environmental remediation related applications. At the core of nanoscience and nanotechnology, rationally mimicking nature offers a promising route to create multifunctional superstructures that capture organisms and biological materials' intriguing responsive and self-adjusting properties. Carbon nanomaterials (e.g., carbon quantum dots, carbon nanotubes (CNTs), and graphene) have been widely investigated as advanced high performance structural and functional materials. Due to their high specific surface area, excellent electrical, thermal and mechanical properties, carbon nanomaterials are viewed as the ideal building blocks for achieving multi-functionality in the practice of biomimicry. Dry adhesives based on vertically aligned carbon nanotube arrays have shown remarkable adhesive strength (i.e., 10 times higher than that of geckos). However, little is known with regard to their wettability at the ultimate atomistic level, and how this may influence the adhesive performance and self-cleaning capabilities, despite water condensation and bridging have proven to be common phenomena at this length scale. Hence, using the CNTs and graphene as a microcosm example, this project focuses on on two critical issues: i) understanding how the nanostructures influence the properties and behavior of water nanodroplets, and ii) how water nanodroplets influence the nano mechanics of the nanostructures. The research findings have important implications in dry fibrillar adhesion, self-cleaning, water collection and purification, as well as seawater desalination applications.
Book Synopsis Chemoselective and Bioorthogonal Ligation Reactions by : W. Russ Algar
Download or read book Chemoselective and Bioorthogonal Ligation Reactions written by W. Russ Algar and published by John Wiley & Sons. This book was released on 2017-03-17 with total page 923 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely, one-stop reference is the first on an emerging and interdisciplinary topic. Covering both established and recently developed ligation chemistries, the book is divided into two didactic parts: a section that focuses on the details of bioorthogonal and chemoselective ligation reactions at the level of fundamental organic chemistry, and a section that focuses on applications, particularly in the areas of chemical biology, biomaterials, and bioanalysis, highlighting the capabilities and benefits of the ligation reactions. With chapters authored by outstanding scientists who range from trailblazers in the field to young and emerging leaders, this book on a highly interdisciplinary topic will be of great interest for biochemists, biologists, materials scientists, pharmaceutical chemists, organic chemists, and many others.
