Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Assembly Of Colloidal Nanocrystals Into Phospholipid Structures And Photothermal Materials
Download Assembly Of Colloidal Nanocrystals Into Phospholipid Structures And Photothermal Materials full books in PDF, epub, and Kindle. Read online Assembly Of Colloidal Nanocrystals Into Phospholipid Structures And Photothermal Materials ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Assembly of Colloidal Nanocrystals Into Phospholipid Structures and Photothermal Materials by : Michael Rasch
Download or read book Assembly of Colloidal Nanocrystals Into Phospholipid Structures and Photothermal Materials written by Michael Rasch and published by . This book was released on 2012 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been growing interest in developing colloidal metal and semiconductor nanocrystals as biomedical imaging contrast agents and therapeutics, since light excitation can cause the nanocrystals to fluoresce or heat up. Recent advances in synthetic chemistry produced fluorescent 2-4 nm diameter silicon and 1-2 nm diaemeter CuInSSe nanocrystals, as well as 16 nm diameter copper selenide (Cu2−[subscript x]Se) nanocrystals exhibiting strong absorbance of near infrared light suitable for biomedical applications. However, the syntheses yield nanocrystals that are stabilized by an adsorbed layer of hydrocarbons, making the nanocrystals hydrophobic and non-dispersible in aqueous solution. Encapsulating these nanocrystals in amphiphilic polymer micelles enables the nanocrystals to disperse in water. Subsequently, the Si nanocrystals were injected into tissue to demonstrate fluorescence imaging, the photothermal transduction efficiency of copper selenide nanocrystals was characterized in water, and the copper selenide nanocrystals were used enhance the photothermal destruction of cancer cells in vitro. The polymer-encapsulated copper selenide nanocrystals were found to have higher photothermal transduction efficiency than 140 nm diameter Au nanoshells, which have been widely investigated for photothermal therapy. Combining the optical properties of metal and semiconductor nanocrystals with the drug-carrying capability of lipid vesicles has received attention lately since it may create a nanomaterial capable of performing simultaneous drug delivery, optical contrast enhancement, and photo-induced therapy. Hydrophobic, dodecanethiol-coated Au nanocrystals were dispersed in water with phosphatidylcholine lipids and characterized using cryo transmission electron microscopy. 1.8 nm diameter Au nanocrystals completely load the bilayer of unsaturated lipid vesicles when the vesicles contain residual chloroform, and without chloroform the nanocrystals do not incorporate into the vesicle bilayer. 1.8 nm Au nanocrystals dispersed in water with saturated lipids to form lipid-coated nanocrystal agglomerates, which sometimes adhered to vesicles, and the shape of the agglomerates varied from linear nanocrystal chains, to flat sheets, to spherical clusters as the lipid fatty acid length was increased from 12 to 18 carbons. Including squalene formed lipid-stabilized emulsion droplets which were fully loaded with the Au nanocrystals. Results with 4.1 nm Au and 2-3 nm diameter Si nanocrystals were similar, but these nanocrystals could not completely load the bilayers of unsaturated lipids.
Book Synopsis Colloidal Nanocrystal Assemblies by : Brian William Goodfellow
Download or read book Colloidal Nanocrystal Assemblies written by Brian William Goodfellow and published by . This book was released on 2011 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal nanocrystal assemblies offer an attractive opportunity for designer metamaterials. The ability to permute chemical composition, size, shape, and arrangement of nanocrystals leads to an astounding number of unique materials properties that find use in an extensive array of applications---ranging from solar cells to medicine. However, to take full advantage of these materials in useful applications, the nature of their assembly and their behavior under external stimuli must be well understood. Additionally, the assembly of colloidal nanocrystals into thin films provides a promising pathway to the solution-processing of inorganic materials that are prohibitively too expensive and/or difficult to deposit by conventional methods. Nanocrystal superlattices (NCSLs) of sterically stabilized nanocrystals were assembled by slow evaporation of colloidal dispersions on various substrates. Detailed analysis of the NCSL structures was carried out using transmission and scanning electron microscopy (TEM and SEM) and small-angle x-ray scattering (SAXS). Body-centered cubic (bcc) NCSLs, in particular, were studied in detail and ligand packing frustration was proposed as a significant driving force for their assembly. The behavior of NCSLs was also studied by SAXS under mild heating and solvent vapor exposure revealing several remarkable order-order, order-disorder, and amorphous-crystalline structural transitions. Colloidal Cu(In [subscript 1-x] Ga [subscript x])Se2 (CIGS) nanocrystals were synthesized by arrested precipitation and formulated into inks. These inks were spray deposited into thin films under ambient conditions to serve as the active light absorbing material in printed low-cost photovoltaic (PV) devices. These devices, which were fabricated without the need for high temperature processes, have achieved power conversion efficiencies above 3 % under AM1.5 illumination. While the efficiencies of these devices are still too low for commercial viability, this work does provide a proof of concept that reasonable efficient solar cells can be created with a low-cost printable process using nanocrystal inks. Since high temperatures are not used to form the light-absorbing layer, nanocrystal-based solar cells were built on flexible light weight plastic substrates. The main obstacle to achieving high power conversation efficiencies was found to be the ability to extract the photo induced charge carriers. Nanocrystal films suffer from poor transport that leads to high recombination rates in thicker films. To date, the best efficiencies have been achieved with thin light absorber layers that only absorb a fraction of the incident light.
Book Synopsis Photochemical Arrays Formed by Spatial Compartmentalization of Colloidal Nanoparticles in a Polymer-based Hydrogel by :
Download or read book Photochemical Arrays Formed by Spatial Compartmentalization of Colloidal Nanoparticles in a Polymer-based Hydrogel written by and published by . This book was released on 2000 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of practical strategies for the assembly of semiconductor and metal colloid nanoparticles into ordered architectures is an area of considerable current interest, since it offers an opportunity for exploiting the optical and electronic properties of these colloids for device development. Prior research has explored creating such organized nanoparticle assemblies by Langmuir-Blodgett techniques or controlled solvent evaporation on suitable substrates. These approaches suffer from several limitations, however, most notably the generation of relatively simple structures and the lack of structural tailorability, preventing full exploitation of these materials. More recently, directed assembly using chemisorption of streptavidin-biotin or thiol-derivatized gold nanoparticles onto substrates has been described. Alternative approaches to achieving two-dimensional confinement of nanoparticles that do not involve substrate-supported materials, but rather organize the nanoparticles into mesoscopically-ordered soft condensed matter, may offer the advantage of enhanced processability and may permit construction of nanocomposite structures based on functional nanoparticles embedded in a processable, polymer-based matrix. This work describes the development of an alternative strategy for constructing 2-D arrays of functional metal and semiconductor nanoparticles. The approach involves directing the organization of nanocrystals into a processable (i.e., by externally applied magnetic and electric fields) polymer-grafted lipid-based complex fluid. By altering the surface chemistry of the nanoparticles, they can be selectively placed into defined regions encapsulating matrix.
Book Synopsis Controlling Structure Across Length Scales with Directed Assembly of Colloidal Nanoparticles by : Paul Anthony Gabrys
Download or read book Controlling Structure Across Length Scales with Directed Assembly of Colloidal Nanoparticles written by Paul Anthony Gabrys and published by . This book was released on 2020 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the promises of nanotechnology is the ability to create a bulk, designer material with its structure programmed at each length scale using deterministic control over the placement of each nanoscale component. Self-assembled nanoparticle colloids, particularly those directed by sequence-specific DNA hybridizations, have emerged as a promising building block for producing these designer materials from nanoparticles that arrange themselves into precise symmetries through mechanisms analogous to atomic crystallization. However, DNA-directed colloids and other self-assembled nanoparticle systems still struggle to realize the goal of arbitrary structure control at length scales larger than a few microns due to the complexity of forces impacting different scales simultaneously. Utilizing existing atomic analogues for inspiration, this work extends the structure-defining nature of these programmable building blocks by imposing lithographic boundary conditions and devising processing techniques resembling those of atomic thin films and powders. Crystallization at an interface is explored, and preferential grain growth from a substrate is demonstrated to control large scale crystal texture. Full crystal orientation control is achieved by using standard nano-fabrication techniques to construct a lithographically-defined template for epitaxial growth that can define arbitrary macroscale shapes over millimeters. The resulting crystallization platform exhibits remarkable resiliency to lattice mismatch due to the ‘soft’ nature of the DNA ligands binding nanoparticles together. The understanding garnered from the DNA-grafted nanoparticle as a model system is extended to a colloid synthesized from a more scalable and robust directing polymer, polystyrene. The unique advantages of this new building block enable the fabrication of truly bulk, 3D materials with arbitrary macroscale shape on the centimeter scale via sintering and post-processing of nanoparticle-based crystallites. The results of this work are nanoparticle-based materials with dictated structure from the nanoscale (crystallographic unit cell), through the microscale (crystallite size and orientation), to the macroscale (lithographically defined shape).
Book Synopsis Assembly of and Ion Transport Through Porous Nanocrystal Thin Films by : Gary Kah Ping Ong
Download or read book Assembly of and Ion Transport Through Porous Nanocrystal Thin Films written by Gary Kah Ping Ong and published by . This book was released on 2018 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of all the defining characteristics of a material, there are probably none more important than structure. Through a simple change in structure, materials can exhibit vastly different properties due to its influence at length scales from atomic crystal structure to microstructure. In fact, structure is so important in the study of materials science that it is given one of the four coveted spots on the materials science tetrahedron. From advances in colloidal nanocrystals, materials with well-defined intrinsic characteristics such as composition and phase can now be synthesized reproducibly. However, these materials are often orders of magnitude smaller than actual device length scales. This disparity in length scales, however, is a fertile opportunity space where structural control can be used both to augment the intrinsic properties of nanocrystals and to bridge the length scales between nanocrystal building blocks and that of an actual device. More specifically, it may actually allow independent imposition of a structural motif separate from other parameters like composition and phase: an almost impossible feat from the standpoint of bulk materials processing. Recent developments in nanocrystal surface chemistry have generated a sub-class of nanocrystals, called ligand-stripped nanocrystals, which are colloidally stable even in the absence of stabilizing ligands. This advancement opens both opportunities to access properties that require access to the nanocrystal surface, and new avenues for assembly that capitalizes on interactions with the nanocrystal surface. In assembly, it opens the question of how one might direct the arrangement of these nanocrystals through the use of a structure-directing agent such as a block copolymer. Initial work in 2012 demonstrated the first assembly of these nanocrystals using an artisanal polystyrene-b-polydimethylacrylamide (PS-PDMA) block copolymer of which the latter block is hypothesized to interact strongly with the nanocrystal surface. Chapter 2 expounds this discovery by investigating the assembly of ligand stripped nanocrystals using PS-PDMA micelles with emphasis on the influence of nanocrystal size and volume fraction on the overall ordering of the assembled structures. Grazing incidence small angle x-ray scattering is employed to quantitatively characterize ordering both at the block copolymer and nanocrystal length scale. The nanocrystal size dependence of ordering is shown such that ordering decreased dramatically for nanocrystal sizes bigger than the PDMA domain size. Similarly, nanocrystal ordering also decreased for nanocrystal volume fractions exceeding the volume fraction of PDMA in the system. Finally, the extreme limits of assembly using PS-PDMA micelles is demonstrated whereby single nanocrystal networks or networks with two length scales of ordering can be generated either at low volume fractions of large nanocrystals or at high volume fractions of small nanocrystals. Chapter 3 extends the assembly of ligand stripped nanocrystals into block copolymer microphase-separated morphologies using PS-PDMA. Here, the phase separation behavior of PS-PDMA with and without nanocrystals is shown alongside methods used to achieve the final morphologies. Both volume fraction and size studies mirroring the studies in Chapter 2 is conducted to arrive at the maximal nanocrystal size and volume fractions after which assembly is kinetically arrested. Morphological control to access the hexagonal and lamellae phases is demonstrated with either a change in relative block copolymer block lengths or through a co-swelling approach using mixed solvents. Then, the compositional diversity of this assembly paradigm is demonstrated with the successful assembly of different metal oxide, metal chalcogenide, and gold nanocrystals. The nature of this diversity is expanded upon with a Fourier Transform Infrared Spectroscopy (FTIR) study that ultimately suggests that the nature of the interaction between PDMA and the nanocrystal surface is based upon hydrogen bonding. Finally, Chapter 4 discusses future work based on the co-assembly of nanocrystal mixtures, the control of PS-PDMA morphology in solution, and the use of block copolymers beyond PS-PDMA for the directed assembly of ligand stripped nanocrystals. Moving beyond the context of assembly towards the arena of ion transport properties, ligand free nanocrystal thin films are applied as model systems to investigate the phenomena of intermediate temperature proton conduction between 250 °C and 100 °C: an anomalous phenomenon where porous metal oxide structures exhibit significant protonic conductivity that are traditionally absent in their bulk counterpart. Chapter 5 explores this phenomenon using porous nanocrystal thin films of cerium oxide or titanium oxide. The study establishes the viability of nanocrystals as model systems by demonstrating the influence of nanocrystal size on protonic conductivity for cerium oxide holding other variables such as porosity comparable. Then, capillary condensation is ruled out as the cause of the phenomenon, and an alternate hypothesis built upon metal oxide surface defect chemistry is proposed. This influence of defect chemistry is preliminary studied with emphasis on the oxygen partial pressure dependence of intermediate temperature protonic conductivity. The observed non-dependence of conductivity on oxygen partial pressure for cerium oxide is consistent with prior observations of the poor dependence of cerium oxide surface defect chemistry on oxygen partial pressure. This is in contrast with the clear oxygen partial pressure dependence observed for titanium dioxide. Holding porosity constant, the higher proton conductivity observed for 4 nm cerium oxide compared to that of 9 nm cerium oxide is rationalized by an enrichment of Ce3+ on the surface and corresponding oxygen vacancies for ultra small cerium oxide nanocrystals. Similarly, the higher proton conductivity observed for cerium oxide compared to titanium dioxide is rationalized by the lower enthalpy of formation of oxygen vacancies for cerium oxide. Then, the link between surface defect chemistry and protonic conductivity is proposed: dissociate water adsorption in surface oxygen vacancies may be responsible for the generation of mobile protons on the surface of the metal oxide. Chapter 6 continues the investigation of intermediate temperature proton conductivity but addresses the stability of the phenomena. Here, time dependent conductivities at all temperatures is presented where a general decrease in conductivity under humidified conditions at temperatures lower than 200 °C is observed. Extended time dependent conductivity measurements at 100 °C show a gradual decrease in conductivity over 2 orders of magnitude over 48 hours for cerium oxide. Detailed FTIR studies reveal the nature of the decrease as passivation of the metal oxide surface due to the formation of cerium hydroxycarbonate consistent with the characteristic instability of rare-earth oxides under ambient or humidified conditions. Thermodynamic analysis further reveal a transition point of 575 °C after which the formation of cerium hydroxycarbonate becomes thermodynamically unfavorable. A reaction for the formation of cerium hydroxycarbonate from cerium oxide, CO2 and H2O is proposed and tested with a time, temperature and oxygen partial pressure dependent conductivity measurement. The results show that the rate of decrease in conductivity is significantly slower for pure oxygen environments. Gallium doping of cerium oxide to reduce the surface affinity toward hydroxycarbonate formation was tested but was found to have little efficacy in enhancing the stability. Thus, an alternate materials selection criteria based upon mineralogy that ultimately suggest titanium dioxide as a stable material under humidified conditions is tested. While the absolute conductivity of porous titanium dioxide nanocrystal systems start lower than that of cerium oxide nanocrystal systems, titanium dioxide appears stable over the tested 48-hour period thus showing the merit of using titanium dioxide over cerium oxide in actual applications due to gains in system stability. The study for titanium dioxide is completed with another detailed FTIR study that shows the formation of bicarbonate species on the surface of titanium dioxide under humidified conditions though the species do not hinder protonic conductivity. The stability of the phenomena for titanium dioxide under pure oxygen environments is also demonstrated. Finally, Chapter 7 discusses future work utilizing in situ FTIR studies to identify the spectroscopic signatures of acidic protons on the oxide surface that result from the aforementioned dissociative water adsorption on surface oxygen vacancies, and tuning of conductivity through manipulation of surface defect concentrations either by acceptor doping or tuning of surface facet termination.
Book Synopsis Interactions and Assemblies of Polymeric Materials and Colloidal Nanocrystals by : Teresa Elaine Williams
Download or read book Interactions and Assemblies of Polymeric Materials and Colloidal Nanocrystals written by Teresa Elaine Williams and published by . This book was released on 2017 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our need to reduce global energy use is well known and without question, not just from an economic standpoint but also to decrease human impact on climate change. Emerging advances in this area result from the ability to tailor-make materials and energy-saving devices using solution-phase chemistry and deposition techniques. Colloidally synthesized nanocrystals, with their tunable size, shape, and composition, and unusual optical and electronic properties, are leading candidates in these efforts. Because of recent advances in colloidal chemistries, the inventory of monodisperse nanocrystals has expanded to now include metals, semiconductors, magnetic materials, and dielectric materials. For a variety of applications, an active layer composed of a thin film of randomly close-packed nanocrystals is not ideal for optimized device performance; here, the ability to arrange these nano building units into mesoporous (2 nm
Book Synopsis Energy Transfer from Colloidal Nanocrystals Into Silicon Substrates by : Hue Minh Nguyen
Download or read book Energy Transfer from Colloidal Nanocrystals Into Silicon Substrates written by Hue Minh Nguyen and published by . This book was released on 2013 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The integration of organic and inorganic materials at the nanoscale offers the possibility of developing new photonic devices that could potentially combine the advantages of both classes of materials. Such optoelectronic structures could work both in photovoltaic as well as in light emitting modes depending on the direction of non-radiative exciton energy transfer (NRET). Physical principles of the hybrid systems were studied systematically in the structures consisting of a monolayer of the colloidal nanocrystal quantum dots (NQDs) grafted on hydrogenated Si surfaces via carboxydecyl linkers. Such an approach allowed us to passivate Si surfaces to suppress non-radiative surface state defects ( Ns
Book Synopsis Methods of Synthesis of Colloidal Nanoparticles by : Jeffrey A. Gerbec
Download or read book Methods of Synthesis of Colloidal Nanoparticles written by Jeffrey A. Gerbec and published by . This book was released on 2006 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloidal semiconductor nanocrystals, with unique size-dependent optical properties, have great promise for integration into next generation technologies including solid-state lighting and biological labeling. A general method of reproducible, large scale and environmentally safe synthetic preparation becomes crucial for integration in commercial devices. In addition to the synthetic protocol, an understanding of the surfaces of the as prepared material is critical for obtaining a high quantum yield that is stable for long periods of time in ambient conditions. In this dissertation, a new synthetic approach to general colloidal nanocrystals is presented. Microwave heating of molecular precursors increases the rate of reaction from days to minutes for a host of nanomaterials. The most relevant for the study of inorganic phosphors is CdSe and InP and their respective ternary analogs. Post synthetic surface treatment of the as prepared material show a tremendous increase in the QY for as prepared InP and InGaP. Post synthetic surface treatment is carried out by photoactivated etching with dilute HF. In the case of InGaP, the QY reaches 0.80 from 0.05 in a matter of minutes. Other surface treatment strategies that address the stability is carried out by forming epitaxial core shell structures. It is shown that using ZnS as a wide band gap shelling material, the QY of InP reaches 0.42 in solution and is stable for months. These are significant steps toward the engineering of semiconductor quantum dot phosphors for solid state lighting and biological labeling.
Book Synopsis The Synthesis of PbS Nanocrystal and Their Self-assembly Into Complex Nanowire and Nanocube Structure by : Fan Xu
Download or read book The Synthesis of PbS Nanocrystal and Their Self-assembly Into Complex Nanowire and Nanocube Structure written by Fan Xu and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For the last 50 years, bulk lead-chalcogenide semiconductors have been key materials for infrared light sources and lasers, photodetectors and highperformance thermoelectrics. Meanwhile, the colloidal synthesis of chalcogenide semiconductor nanocrystals has provided a new pathway to producing optoelectronic materials with unique physical properties at low cost, including lead-chalcogenide nanocrystals. In this thesis, we synthesized various sizes of lead salt nancrystals that exhibit remarkable photoluminescence efficiencies across the near infrared region at room-temperature, which can be appealing active material for light emitting devices, photovoltaic devices, and bio-imaging. Meanwhile, we developed the catalyst-free self-attachment of PbS nanowires in hot colloidal solution using a combination of multiple surfactants. We demonstrate the controllable self-attachment of star-shaped nanocrystals can lead to radically-branched nanowires while the assembly of octahedral nanocrystals leads to zigzag nanowires. The synthesized nanowires exhibit strong position dependent quantum confinement, which occurs at the side arms and high faceted edges of the nanowires. Those novel structures give rise to the appealing optical properties of the nanowires, with strong photoluminescence in the near infrared region.
Book Synopsis Semiconductor Nanocrystals by : Alexander L. Efros
Download or read book Semiconductor Nanocrystals written by Alexander L. Efros and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: A physics book that covers the optical properties of quantum-confined semiconductor nanostructures from both the theoretical and experimental points of view together with technological applications. Topics to be reviewed include quantum confinement effects in semiconductors, optical adsorption and emission properties of group IV, III-V, II-VI semiconductors, deep-etched and self assembled quantum dots, nanoclusters, and laser applications in optoelectronics.
Book Synopsis Advances in Tissue Engineering by : Julia M. Polak
Download or read book Advances in Tissue Engineering written by Julia M. Polak and published by World Scientific. This book was released on 2008 with total page 947 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Tissue Engineering is a unique volume and the first of its kind to bring together leading names in the field of tissue engineering and stem cell research. A relatively young science, tissue engineering can be seen in both scientific and sociological contexts and successes in the field are now leading to clinical reality. This book attempts to define the path from basic science to practical application. A contribution from the UK Stem Cell Bank and opinions of venture capitalists offer a variety of viewpoints, and exciting new areas of stem cell biology are highlighted. With over fifty stellar contributors, this book presents the most up-to-date information in this very topical and exciting field.
Book Synopsis Self-Assembly of Nanostructures and Patchy Nanoparticles by : Shafigh Mehraeen
Download or read book Self-Assembly of Nanostructures and Patchy Nanoparticles written by Shafigh Mehraeen and published by BoD – Books on Demand. This book was released on 2020-11-04 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Top-down approaches are currently the main contributor of fabricating microelectronic devices. However, the prohibitive cost of numerous technological steps in these approaches is the main obstacle to further progress. Furthermore, a large number of applications necessitate fabrication of complex and ultra-small devices that cannot be made using these approaches. New approaches based on natural self-assembly of matter need to be developed to allow for fabrication of micro and nanoelectronic devices. Self-assembly of nanostructures is a dynamic field, which explores physics of these structures and new ways to fabricate them. However, the major problem is how to control the properties of the nanostructures resulting from low dimensionality. This book presents recent advances made to address this problem, and fabricate nanostructures using self-assembly.
Download or read book Nanobiotechnology written by Alok Dhawan and published by CRC Press. This book was released on 2018-03-26 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book combines the contributions from the experts of material science, molecular biology, toxicology bio-organic and bio-inorganic chemistry, toxicologists and environmental and food technology etc. to fathom the full scope of current and future of developments in the area of Nanobiotechnology. Provides brief overview of nanobiotechnology for general readers who are not familiar with the research fields and presents a strong overview of most of the critical areas in field This book can also be used as text book for graduate students as an essential reference material, and as an reading material for general readers having a curiosity in Nanobiotechnology.
Book Synopsis Anisotropic Nanomaterials by : Quan Li
Download or read book Anisotropic Nanomaterials written by Quan Li and published by Springer. This book was released on 2015-06-09 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book anisotropic one-dimensional and two-dimensional nanoscale building blocks and their assembly into fascinating and qualitatively new functional structures embracing both hard and soft components are explained. Contributions from leading experts regarding important aspects like synthesis, assembly, properties and applications of the above materials are compiled into a reference book. The anisotropy, i.e. the direction-dependent physical properties, of materials is fascinating and elegant and has sparked the quest for anisotropic materials with useful properties. With such a curiosity, material scientists have ventured into the realm of nanometer length scale and have explored the anisotropic nanoscale building blocks such as metallic and nonmetallic particles as well as organic molecular aggregates. It turns out that the anisotropic nanoscale building blocks, in addition to direction-dependent properties, exhibit dimension and morphology dependence of physical properties. Moreover, ordered arrays of anisotropic nanoscale building blocks furnish novel properties into the resulting system which would be entirely different from the properties of individual ones. Undoubtedly, these promising properties have qualified them as enabling building blocks of 21st century materials science, nanoscience and nanotechnology. Readers will find this book professionally valuable and intellectually stimulating in the rapidly emerging area of anisotropic nanomaterials. Quan Li, Ph.D., is Director of the Organic Synthesis and Advanced Materials Laboratory at the Liquid Crystal Institute of Kent State University, where he is also Adjunct Professor in the Chemical Physics Interdisciplinary Program. He has directed research projects funded by US Air Force Research Laboratory (AFRL), US Air Force Office of Scientific Research (AFSOR), US Army Research Office (ARO), US Department of Defense Multidisciplinary University Research Initiative (DoD MURI), US National Science Foundation (NSF), US Department of Energy (DOE), US National Aeronautics and Space Administration (NASA), Ohio Third Frontier, and Samsung Electronics, among others.
Book Synopsis Self-Assembled Nanostructures by : Jin Zhang
Download or read book Self-Assembled Nanostructures written by Jin Zhang and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructures refer to materials that have relevant dimensions on the nanometer length scales and reside in the mesoscopic regime between isolated atoms and molecules in bulk matter. These materials have unique physical properties that are distinctly different from bulk materials. Self-Assembled Nanostructures provides systematic coverage of basic nanomaterials science including materials assembly and synthesis, characterization, and application. Suitable for both beginners and experts, it balances the chemistry aspects of nanomaterials with physical principles. It also highlights nanomaterial-based architectures including assembled or self-assembled systems. Filled with in-depth discussion of important applications of nano-architectures as well as potential applications ranging from physical to chemical and biological systems, Self-Assembled Nanostructures is the essential reference or text for scientists involved with nanostructures.
Book Synopsis Lipid-Based Drug Delivery Systems by : Bhupendra Prajapati
Download or read book Lipid-Based Drug Delivery Systems written by Bhupendra Prajapati and published by CRC Press. This book was released on 2023-12-01 with total page 837 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book appraises the role of lipid-based drug delivery systems (LBDDSs) with respect to the bioavailability and controlled delivery of complex drug molecules for improving their clinical viability. It covers the latest developments and advancements in the field of drug delivery, and explores and compiles information on the current situation of lipid-based formulations used as versatile excipients and all their possible routes to improve therapeutic benefits. The book discusses novel formulations such as depot formulations, micro- and nanoemulsions, solid lipid nanoparticles (SLNs), nanostructured lipid carriers (NLCs), liposomes, nanoliposomes, micelles, nanosuspensions, lipid implants and inserts, and lipid nanotubes. It presents preparation methods of LBDDSs and their physicochemical properties, and portrays their various application angles and their impacts on drug-conveyance frameworks when employed in vitro and in vivo. The book is beneficial for researchers working on lipid-based drug formulations as well as biological and translational drug delivery. It is also a useful resource for course work of students of various academic degree programs such as pharmacy, health sciences, biotechnology, and microbiology; postgraduate and PhD students; and postdoctoral fellows researching on nanomedicine-based drug delivery systems.
Book Synopsis Metal Nanoparticles in Microbiology by : Mahendra Rai
Download or read book Metal Nanoparticles in Microbiology written by Mahendra Rai and published by Springer Science & Business Media. This book was released on 2011-04-02 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following an introduction to biogenic metal nanoparticles, this book presents how they can be biosynthesized using bacteria, fungi and yeast, as well as their potential applications in biomedicine. It is shown that the synthesis of nanoparticles using microbes is eco-friendly and results in reproducible metal nanoparticles of well-defined sizes, shapes and structures. This biotechnological approach based on the process of biomineralization exploits the effectiveness and flexibility of biological systems. Chapters include practical protocols for microbial synthesis of nanoparticles and microbial screening methods for isolating a specific nanoparticle producer as well as reviews on process optimization, industrial scale production, biomolecule-nanoparticle interactions, magnetosomes, silver nanoparticles and their numerous applications in medicine, and the application of gold nanoparticles in developing sensitive biosensors.
