Xem 1-20 trên 84 kết quả Materials synthesis
  • Ferroelectric materials have been and still are widely used in many applications, that have moved from sonar towards breakthrough technologies such as memories or optical devices. This book is a part of a four volume collection (covering material aspects, physical effects, characterization and modeling, and applications) and focuses on ways to obtain high-quality materials exhibiting large ferroelectric activity. The book covers the aspect of material synthesis and growth, doping and composites, lead-free devices, and thin film synthesis....

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  • Ferroelectric materials have been and still are widely used in many applications, that have moved from sonar towards breakthrough technologies such as memories or optical devices. This book is a part of a four volume collection (covering material aspects, physical effects, characterization and modeling, and applications) and focuses on ways to obtain high-quality materials exhibiting large ferroelectric activity. The book covers the aspect of material synthesis and growth, doping and composites, lead-free devices, and thin film synthesis....

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  • Organic synthesis is at the heart of chemistry. Although today interdisciplinary areas between chemistry and biology or between chemistry and material sciences are ofien believed to provide the main driving forces for the advancement of chemistry

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  • Heat treatment and surface engineering are seen as crucial elements in the design and manufacture of strategic components in a wide range of market sectors and industries including air, sea and land transportation, energy production, mining, defense or agriculture. This book offers a broad review of recent global developments in an application of thermal and thermochemical processing to modify the microstructure and properties of a wide range of engineering materials.

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  • Advanced Topics in Biomineralization is a compendium of current topics focusing on processes of formation, organization, as well as mineralization of novel structural materials. From enchondral ossification to the application of biomineralized cement, the subject of biomineralization encompasses a range of diverse disciplines including molecular biology, supramolecular chemistry, materials science and engineering. A common theme in all these areas of research in biomineralization is the ability to utilize strategies from Nature to create functional materials.

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  • This is the first volume of Advances in Nanoporous Materials, a new book series devoted to the science and application of all kinds of nanoporous solids. Its intention is to publish comprehensive reviews of lasting value in the field of nanoporous materials written by renowned experts. Its scope covers all aspects of nanoporous solids, including their preparation and structure, their post-synthetic modification, methods for their characterization as well as their application in catalysis and adsorption/separation....

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  • Tribasic lead sulfate Ž3BS. and tetrabasic lead sulfate Ž4BS., used as precursors of the positive active material in the leadracid batteries, were prepared by a new method: reactive grinding. The effects of various experimental parameters Žstoichiometry, hygrometry of the starting compounds, duration of mechanical treatment. upon the nature and morphological features of the resulting phase were investigated.

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  • The book "Polycrystalline Materials - Theoretical and Practical Aspects" is focused on contemporary investigations of plastic deformation, strength and grain-scale approaches, methods of synthesis, structurals, properties, and application of some polycrystalline materials. It is intended for students, post-graduate students, and scientists in the field of polycrystalline materials.

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  • Metal nanoparticles are certain to be the building blocks of the next generation of electronic, optoelectronic and chemical sensing devices. The physical limits imposed by top-down methods such as photo- and electron- beam lithography dictate that the synthesis and assembly of functional nanoscale materials will become the province of chemists.

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  • Materials physics, structure of adsorbents, ion exchangers, ion conductors, catalysts, and permeable materials, synthesis methods of catalyst adsorbents, ion exchangers, and permeable materials, material characterization methods,... is the main content of the book The Physical Chemistry of Matrials. Invite you to consult.

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  • Nanocrystalline materials have been the subject of widespread research over the past couple of decades with significant advancement in their understanding especially in the last few years [3]. As the name suggests, they are single or multi-phase polycrystals with nano scale (1 · 109 –250 · 109 m) grain size. At the upper limit of this regime, the term ‘‘ultra- fine grain size’’ is often used (grain sizes of 250–1000 nm).

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  • Whatever the context, be it solid, liquid, or some transitionary setting, materials science seeks an understanding of a material's macromolecular structure and properties by drawing on knowledge of its atomic and molecular constituents. Until recently, the term ''materials science'' was used primarily to denote empirical study, fundamental research, synthesis, a

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  • A microporous+mesoporous material composed of MCM-41 and MFI was produced by a two-step synthetic process. The solid, called 99MMM-1,:: was characterized by X-ray di4raction (XRD), N2 physisorption, and transmission electron microscopy (TEM).

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  • The synthesis of imidazo[1,2-a]-pyridine derivatives was carried out by subsequential reactions: condensation, substitution and reduction, using the commercially available 2- aminopyridine as starting material.

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  • Sol-gel process, a most usefully and effectively process, has a lot of advantage for preparation of a variety of advanced materials in various structures and sizes, via polymerization of metal and semiconductor hydroxides or via hydrolysis and condensation of their alkoxides, since in nucleophilic substitution (SN) reaction and nucleophilic addition (AN) reaction, the substituent with thelargest partial negative charge,is the nucleophile, and in SN reactions the substituent with the largest positive charge, + , is theleaving group or nucleofugal.

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  • Synthesis of the copper nanoparticles colloidal solutions by chemical reduction method with various precursors including copper oxalate, CuCl2, CuSO4, Cu(NO3)2 with hydrazine hydrate reducing agent, NaBH4; solvent glycerin and water, PVA and PVP protection, dispersants and protective agents: including trisodium citrate, ascorbic acid, CTAB.

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  • As may be obvious by now, it is helpful in the understanding of this book to see the earth as having a single soil (as it has a single atmosphere), nearly all of it 10,000 or more years “old,” or in development, since the bulk of its surface “parent material” was laid down. In addition to those cited by Hamaker, some other examples of results obtained with ground gravel (mixed rock) materials may help illustrate the great potential to restore youthfulness and productive fertility to any and all soil....

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  • The authors of the articles, while they mention a number of the elements in the dust, think of it as a “liming” material rather than a broad-spectrum remineralization material. Significantly, they observe: “Use of cement kiln dusts for soil liming is not a new idea, but it seems to have received little attention and the relative merits of the dust and of conventional liming materials have not been well studied.

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  • Some writers think that once a word has been written, it is sacred. Successful writers know that change is an important part of the writing process. Early drafts that may seem finished can most likely be improved. Since writing is a process, you have to be willing to change, rearrange, and discard material to achieve a well-crafted final product. Very few writers create the perfect draft on the first try.

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  • Explosives and propellants contain considerable chemical energy that can be converted into rapid expansion. In contrast to the simple burning of a fuel, explosives and propellants are self-contained and do not need an external supply of oxygen via air. Since their energy content inherently creates the risk of accidental triggering of the explosive reaction, the correct synthesis, formulation, and handling during production and use are of utmost importance for safety, necessitating specialist knowledge on energetic materials, their characteristics, handling and applications.

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