Download or read book Engineering the Interface Between Lipid Bilayers and Inorganic Materials written by Piyush Verma and published by Stanford University. This book was released on 2011 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding and engineering the interface between living matter and synthetic materials can enable technological advances in the areas of biosensors, therapeutics and diagnostics. One of the most crucial and commonly encountered class of such interfaces is the one between the cell membrane and various engineering materials and nanostructures. These interfaces can either be `large area' interfaces between the membrane and material surfaces or nanoscale `through thickness' cross-sectional interfaces that are formed as a synthetic material penetrates the membrane. This thesis describes contributions towards the understanding and/or development of each of these two kinds of interfaces. In the first two chapters, the focus is on synthetic membrane systems which provide a promising platform for biosensing applications. These are based on `large area' interfaces with engineering materials. One powerful approach consists of a synthetic lipid bilayer supported on an inorganic substrate. The non-covalent interactions between the lipids and the underlying substrate are of prime importance in these systems. Lipid spreading experiments, which measure the displacement, velocity, and roughness of the bilayer edge or the dynamic wetting line as it expands on the substrate, have proved useful in studying this interaction. However, previous spreading experiments have not observed any effects due to the inherent elasticity of the bilayer on expansion dynamics. To investigate this, dynamic expansion measurements of a phospholipid bilayer supported on substrates with different surface chemistry were performed. Remarkably different interface dynamics were observed on silica and chromium oxide surfaces. While the bilayer edge on silica monotonically roughened with expansion similar to other quenched noise 2-d systems, it showed a unique rough-smooth-rough interface transition on the chromium oxide substrate. This transition was found to be a result of the viscoelasticity of the lipid bilayer and could be modeled using a modified Edward-Wilkinson equation, which includes a spring-like term to account for the bilayer elasticity. These results demonstrate that the common lipid bilayer deposition technique of vesicle rupture generates supported lipid bilayers which are under compressive stress. This has important implications for biophysical studies performed on supported lipid bilayers and also for the stability of certain biosensing architectures like the pore spanning bilayer system. In the subsequent chapters, the emphasis is on developing a nanoscale `through thickness' interface between the cell membrane and synthetic nanostructures. The primary objective is to form an electrical interface with the interior of the cell for electrophysiological measurements. Such an interface is promising for various fundamental biophysical studies and also for applications such as high resolution neural prosthetics, on-chip electrically addressed artificial neuronal networks and chip based patchclamps. The main challenge in developing such interfaces is controlling the structure and properties of the junction between the device and cell membrane. Recent advances in nanoscale materials have enabled interactions at length scales natural to biology, thus providing an opportunity to control the structure of such junctions. By utilizing the design principles of transmembrane proteins that span the cell membrane, biomimetic metallic electrodes capable of penetrating the cell membrane can be developed. To elucidate the molecular structure of the electrode-membrane interface, coarse grained molecular dynamics (MD) simulations were carried out. These simulations revealed striking trends in interface structure for devices with different geometry and were used to optimize certain device parameters. Furthermore, energetics of the cell-device interaction were computed using thermodynamic integration and adiabatic switching to quantify the spontaneity of interaction. In the process, a unique methodology to compute the energetics of processes involving the interaction of nanostructured materials with soft matter structures was developed. In addition to these simulations, a physical model of cell deformation was developed to understand the mechanics of cell-device interaction. This was built on principles of continuum mechanics under a few simplifying assumptions. In addition to bringing down the parameter space for device design, this model explained a previously observed non-linear to linear transition in thin shell deformation experiments. Nanoscale `stealth' probed based on biomimetic design principles were fabricated using sophisticated microfabrication techniques. The electrical properties of the device were determined by performing cyclic voltammetry in a buffer solution with electrochemically active species. The formation of a well controlled junction between the post electrode and cell membrane was demonstrated by testing the device with red blood cells. A giga-ohm seal was observed to form spontaneously as the cell was brought close to the post, confirming intracellular access. The formation of giga-ohm seal is critical for patchclamping, a technique used extensively in the pharmaceutical industry. Together, MD simulations and cell deformation model provide a powerful approach to modify the device design depending upon the specific application. When coupled with the sophisticated yet flexible fabrication scheme developed for the device, the next generation of massively parallel and highly efficient interface between cells and electronics can be developed.

Download or read book Polymer Nanocomposites in Biomedical Engineering written by Kishor Kumar Sadasivuni and published by Springer. This book was released on 2019-01-29 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a thorough discussion of the physics, biology, chemistry and medicinal science behind a new and important area of materials science and engineering: polymer nanocomposites. The tremendous opportunities of polymer nanocomposites in the biomedical field arise from their multitude of applications and their ability to satisfy the vastly different functional requirements for each of these applications. In the biomedical field, a polymer nanocomposite system must meet certain design and functional criteria, including biocompatibility, biodegradability, mechanical properties, and, in some cases, aesthetic demands. The content of this book builds on what has been learnt in elementary courses about synthesising polymers, different nanoparticles, polymer composites, biomedical requirements, uses of polymer nanocomposites in medicine as well as medical devices and the major mechanisms involved during each application. The impact of hybrid nanofillers and synergistic composite mixtures which are used extensively or show promising outcomes in the biomedical field are also discussed. These novel materials vary from inorganic/ceramic-reinforced nanocomposites for mechanical property improvement to peptide-based nanomaterials, with the chemistry designed to render the entire material biocompatible.

Download or read book Mesoscale Chemistry written by Kathryn Hughes and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few decades great strides have been made in chemistry at the nanoscale, where the atomic granularity of matter and the exact positions of individual atoms are key determinants of structure and dynamics. Less attention, however, has been paid to the mesoscale--it is at this scale, in the range extending from large molecules (10 nm) through viruses to eukaryotic cells (10 microns), where interesting ensemble effects and the functionality that is critical to macroscopic phenomenon begins to manifest itself and cannot be described by laws on the scale of atoms and molecules alone. To further explore how knowledge about mesoscale phenomena can impact chemical research and development activities and vice versa, the Chemical Sciences Roundtable of the National Research Council convened a workshop on mesoscale chemistry in November 2014. With a focus on the research on chemical phenomena at the mesoscale, participants examined the opportunities that utilizing those behaviors can have for developing new catalysts, adding new functionality to materials, and increasing our understanding of biological and interfacial systems. The workshop also highlighted some of the challenges for analysis and description of mesoscale structures. This report summarizes the presentations and discussion of the workshop.

Download or read book Curiosity And Passion For Science And Art written by Uwe B Sleytr and published by World Scientific. This book was released on 2016-07-04 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the accomplishments of a curious and imaginative scientist, and his endeavours to translate or even to extrapolate scientific insights into the world of art.The science section in this volume concerns studies on S-layers, a very important class of proteins found on the surface of numerous Bacteria and nearly all Archaea. S-layer proteins are one of the most abundant biopolymers on our planet, and assemble into the simplest type of biological membrane. Moreover, they are unique building blocks and patterning elements for the production of complex supramolecular structures and nanoscale devices in nanobiotechnology, molecular nanotechnology, synthetic biology, biomimetics and nanomedicine.In the second part of this book the author goes on to passionately describe how his scientific activities stimulated his art work, which in particular concerns the visualization of results and the potential of synthetic biology and evolutionary events induced by genetic manipulations. Most importantly, the engagement in art allowed him to leave the rather curtailed canon of science and reach a mental state of unlimited freedom of thoughts. Mask-like sculptures are used as examples to visualize the intersection between science and art, and in particular the unpredictability and mystery of scientific visions.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Understanding Enzymes written by Allan Svendsen and published by CRC Press. This book was released on 2016-04-27 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding Enzymes: Function, Design, Engineering, and Analysis focuses on the understanding of enzyme function and optimization gained in the past decade, past enzyme function analysis, enzyme engineering, and growing insights from the simulation work and nanotechnology measurement of enzymes in action in vitro or in silico. The book also prese

Download or read book Molecular Modeling of Geochemical Reactions written by James D. Kubicki and published by John Wiley & Sons. This book was released on 2016-07-22 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular processes in nature affect human health, the availability of resources and the Earth’s climate. Molecular modelling is a powerful and versatile toolbox that complements experimental data and provides insights where direct observation is not currently possible. Molecular Modeling of Geochemical Reactions: An Introduction applies computational chemistry to geochemical problems. Chapters focus on geochemical applications in aqueous, petroleum, organic, environmental, bio- and isotope geochemistry, covering the fundamental theory, practical guidance on applying techniques, and extensive literature reviews in numerous geochemical sub-disciplines. Topics covered include: • Theory and Methods of Computational Chemistry • Force Field Application and Development • Computational Spectroscopy • Thermodynamics • Structure Determination • Geochemical Kinetics This book will be of interest to graduate students and researchers looking to understand geochemical processes on a molecular level. Novice practitioners of molecular modelling, experienced computational chemists, and experimentalists seeking to understand this field will all find information and knowledge of use in their research.

Download or read book Nanotechnology and Functional Foods written by Cristina Sabliov and published by John Wiley & Sons. This book was released on 2015-04-21 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The continued advancement in the sciences of functional foods and nutraceuticals has clearly established a strong correlation between consumption of bioactives and improved human health and performance. However, the efficacy and bioavailability of these bioactive ingredients (e.g., omega-3 oils, carotenoid antioxidants, vitamins, and probiotic bacteria) in foods often remains a challenge, due to their instability in food products and gastrointestinal tract, as well as their limited bioavailability. In some cases, these bioactive ingredients may impart an undesirable organoleptic characteristic to the final product, which hinders acceptance by consumers. In addressing these challenges, development of effective delivery systems is critical to meet the consumer needs for effective bioactives. The scientific knowledge behind developing effective delivery of bioactive components into modern and wide-ranging food products will be essential to reap their health-promoting benefits and to support the sustained growth of the functional foods market. Nanotechnology and Functional Foods: Effective Delivery of Bioactive Ingredients explores the current data on all aspects of nanoscale packing, carrying and delivery mechanisms of bioactives ingredients to functional foods. The book presents various delivery systems (including nano-emulsions, solid lipid nanoparticles, and polymeric nano-particles), their properties and interactions with other food components, and fate in the human body. Later chapters emphasize the importance of consumers attitude towards nano-delivery for the success of the technology and investigate the challenges faced by regulatory agencies to control risks and harmonize approaches worldwide. The wide applicability of bioactive delivery systems with the purpose of improving food quality, food safety and human health will make this book a worthy reference for a diverse range of readers in industry, research and academia.

Download or read book Organic Nanomaterials written by Tomas Torres and published by John Wiley & Sons. This book was released on 2013-08-05 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover a new generation of organic nanomaterials and their applications Recent developments in nanoscience and nanotechnology have given rise to a new generation of functional organic nanomaterials with controlled morphology and well-defined properties, which enable a broad range of useful applications. This book explores some of the most important of these organic nanomaterials, describing how they are synthesized and characterized. Moreover, the book explains how researchers have incorporated organic nanomaterials into devices for real-world applications. Featuring contributions from an international team of leading nanoscientists, Organic Nanomaterials is divided into five parts: Part One introduces the fundamentals of nanomaterials and self-assembled nanostructures Part Two examines carbon nanostructures from fullerenes to carbon nanotubes to graphene reporting on properties, theoretical studies, and applications Part Three investigates key aspects of some inorganic materials, self-assembled monolayers, organic field effect transistors, and molecular self-assembly at solid surfaces Part Four explores topics that involve both biological aspects and nanomaterials such as biofunctionalized surfaces Part Five offers detailed examples of how organic nanomaterials enhance sensors and molecular photovoltaics Most of the chapters end with a summary highlighting the key points. References at the end of each chapter guide readers to the growing body of original research reports and reviews in the field. Reflecting the interdisciplinary nature of organic nanomaterials, this book is recommended for researchers in chemistry, physics, materials science, polymer science, and chemical and materials engineering. All readers will learn the principles of synthesizing and characterizing new organic nanomaterials in order to support a broad range of exciting new applications.

Download or read book Chemical Engineering Progress written by and published by . This book was released on 2006 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Green Design Materials and Manufacturing Processes written by Helena Bartolo and published by CRC Press. This book was released on 2013-06-06 with total page 791 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green Design, Materials and Manufacturing Processes includes essential research in the field of sustainable intelligent manufacturing and related topics, containing reviewed papers presented at the 2nd International Conference on Sustainable Intelligent Manufacturing 2013. Topics covered include Eco Design and Innovation, Energy Efficiency, Green and Smart Manufacturing, Green Transportation, Life-Cycle Engineering, Renewable Energy Technologies, Reuse and Recycling Techniques, Smart Design, Smart Materials, Sustainable Business Models and Sustainable Construction. Intended for engineers, architects, designers, economists and manufacturers dealing with key sustainability issues.

Download or read book Nano Enabled Medical Applications written by Lajos P. Balogh and published by CRC Press. This book was released on 2020-11-23 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the second in a series presenting articles that received the most citations in recent years in nanomedicine. The series is edited by, a prominent nanotechnology researcher and editor-in-chief of Precision Nanomedicine. The theme of the second volume is about nano-enabled medical applications. The 19 articles collected here have already acquired more than 12,500 citations highlighting the importance and professional recognition of the work of these scientists in nanomedicine. The content includes the general overview of the field and a wide variety of applications that have been impossible without nanoscience and nanotechnology.

Download or read book The Handbook of Nanomedicine written by Kewal K. Jain and published by Humana Press. This book was released on 2017-03-20 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomedicine is defined as the application of nanobiotechnology in clinical medicine, which is currently being used to research the pathomechanism of disease, refine molecular diagnostics, and aid in the discovery, development, and delivery of drugs. In The Handbook of Nanomedicine, Third Edition, Prof. Kewal K. Jain updates, reorganizes, and replaces information in the comprehensive second edition in order to capture the most recent advances in this dynamic field. Important components of nanomedicine such as drug delivery via nanobiotechnology and nanopharmaceuticals as well as nanooncology, where the greatest number of advances are occurring, are covered extensively. As this text is aimed at nonmedical scientists, pharmaceutical personnel, as well as physicians, descriptions of the technology involved and other medical terminology are kept as clear and simple as possible. In depth and cutting-edge, The Handbook of Nanomedicine, Third Edition informs its readers of the ever-growing field of nanomedicine, destined to play a significant role in the future of healthcare.

Download or read book Issues in Nanoscience and Nanoscale Research 2012 Edition written by and published by ScholarlyEditions. This book was released on 2013-01-10 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Nanoscience and Nanoscale Research: 2012 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Nanotechnology. The editors have built Issues in Nanoscience and Nanoscale Research: 2012 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Nanotechnology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Nanoscience and Nanoscale Research: 2012 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Drug Delivery Nanosystems for Biomedical Applications written by Chandra P. Sharma and published by Elsevier. This book was released on 2018-08-22 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drug Delivery Nanosystems for Biomedical Application reviews some of the most challenging nanosystems with different routes of delivery that are useful for specific drugs, from both efficacy and bioavailability points-of-view. The chapters explore how this area is developing, the present state of the field, and future developments, in particular, inorganic, metallic, polymeric, composite and lipid nanosystems and their possible evolution to clinical applications. The book is a valuable research reference for both researchers and industrial partners who are not only interested in learning about this area, but also want to gain insights on how to move towards translational research. - Focuses on applications, including tissue engineering and regenerative technologies, showing how nanosystems are used in practice - Explores how nanosystems are used to deliver a variety of drugs, including peptides, hormone growth factors and genes - Assesses the safety and nanotoxicity aspects of drug delivery nanosystems

Download or read book Trends in Chemistry of Materials written by C. N. R. Rao and published by World Scientific. This book was released on 2008 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this collection, the author has compiled a set of his papers representing some of the highlights of materials chemistry. It features a section on oxidic materials, which includes high-temperature superconductivity, colossal magnetoresistance, electronic phase separation and multiferroics. The author has also included novel methods for making gallium nitride, boron nitride and such materials, by using precursors and the urea decomposition route. Moreover, there is a section dealing with open-framework and hybrid materials of which the latter has a great future since one can make use of the rigidity of inorganic structures and the functionality and flexibility of the organic residues to design materials with novel properties.

Download or read book Trends In Chemistry Of Materials Selected Research Papers Of C N R Rao written by C N R Rao and published by World Scientific. This book was released on 2008-07-21 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this collection, the author has compiled a set of his papers representing some of the highlights of materials chemistry. It features a section on oxidic materials, which includes high-temperature superconductivity, colossal magnetoresistance, electronic phase separation and multiferroics. The author has also included novel methods for making gallium nitride, boron nitride and such materials, by using precursors and the urea decomposition route. Moreover, there is a section dealing with open-framework and hybrid materials of which the latter has a great future since one can make use of the rigidity of inorganic structures and the functionality and flexibility of the organic residues to design materials with novel properties.