Описание: This book lays the groundwork for further use of Electron Spin Echo Envelop Modulation (ESEEM) and opens the possibility of highly precise chemical fingerprinting. It reveals an astonishingly long memory of spin coherence in semiconductor particles.
There is a growing interest in the use of nanoparticles modifiedwith DNAs, viruses, peptides and proteins for the rational designof nanostructured functional materials and their use in biosensorapplications. The challenge is to control the organization ofbiomolecules on nanoparticles while retaining their biologicalactivity as potential chemical and gene therapeutics. Thesenoble metal nanoparticles/biomolecules conjugates have specificproperties and therefore they are attractive materials fornanotechnology in biochemistry and medicine.
In this book, the author review work performed dealing with theDNA structure and functionalities, interactions between DNA, noblemetal nanoparticles, surface active agents, solvents and otheradditives. Particular attention is given to how the DNA'schain length and the DNA conformation affect the interaction andstructure of the nanoconjugates and nanostructures that are formed.Also discussed are the recent advances in the preparation, characterization, and applications of noble metal nanoparticlesthat are conjugated with DNA aptamers and oligomers. The advantagesand disadvantages of functionalized nanoparticles through variousdetection modes are highlighted, including colorimetry, fluorescence, electrochemistry, SPR, and, mass spectrometry for thedetection of small molecules and biomolecules. The functionalizednoble metal nanoparticles are selective and sensitive for theanalytes, showing their great potential in biosensing. Furthermore, this book reviews recent progress in the area of DNA-noble metalnanoparticles based artificial nanostructures, that is, thepreparation, collective properties, and applications of variousDNA-based nanostructures are also described.
Автор: Xiaogang Peng; A.J. Bard; David Michael P. Mingos; Название: Semiconductor Nanocrystals and Silicate Nanoparticles ISBN: 3642066186 ISBN-13(EAN): 9783642066184 Издательство: Springer Рейтинг: Цена: 28892 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Автор: M S Ramachandra Rao (Editor), Название: ZnO Nanocrystals and Allied Materials ISBN: 8132211596 ISBN-13(EAN): 9788132211594 Издательство: Springer Рейтинг: Цена: 12154 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: In seventeen chapters contributed by experts in the field, this book explores the varied physical properties of ZnO nanocrystals, helping researchers envisage device applications of ZnO and allied materials in thin film, heterostructure nanostructure forms.
Описание: Semiconductor nanostructures are ideal systems to tailor the physical properties via quantum effects, utilizing special growth techniques, self-assembling, wet chemical processes or lithographic tools in combination with tuneable external electric and magnetic fields. Such systems are called "Quantum Materials".
Описание: Since the size, shape, and microstructure of nanocrystalline materials strongly impact physical and chemical properties, the development of new synthetic routes to nanocrystals with controlled composition and morphology is a key objective of the nanomaterials community. This objective is dependent on control of the nucleation and growth mechanisms that occur during the synthetic process, which in turn requires a fundamental understanding of both classical nucleation and growth and non-classical growth processes in nanostructured materials. Recently, a novel growth process called Oriented Attachment (OA) was identified which appears to be a fundamental mechanism during the development of nanoscale materials. OA is a special case of aggregation that provides an important route by which nanocrystals grow, defects are formed, and unique—often symmetry-defying—crystal morphologies can be produced. This growth mechanism involves reversible self-assembly of primary nanocrystals followed by reorientation of the assembled nanoparticles to achieve structural accord at the particle-particle interface, the removal of adsorbates and solvent molecules, and, finally, the irreversible formation of chemical bonds to produce new single crystals, twins, and intergrowths. Crystallization and Growth of Colloidal Nanocrystals provides a current understanding of the mechanisms related to nucleation and growth for use in controlling nanocrystal morphology and physical-chemical properties, and is essential reading for any chemist or materials scientist with an interest in using nanocrystals as building blocks for larger structures. This book provides a compendium for the expert reader as well as an excellent introduction for advanced undergraduate and graduate students seeking a gateway into this dynamic area of research.
Автор: Glezer Название: Melt-Quenched Nanocrystals ISBN: 1466594144 ISBN-13(EAN): 9781466594142 Издательство: Taylor&Francis Рейтинг: Цена: 14108 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Melt quenching—the method of quenching from the liquid state—provides new opportunities for producing advanced materials with a unique combination of properties. In the process of melt quenching, attainment of critical cooling rates can produce specific structural states of the material. Nanocrystalline materials produced by melt quenching are classified as nanomaterials not only by their nanoscale structural elements but also by the effects these elements have on the properties of the material.The result of 30 years of research, Melt-Quenched Nanocrystals presents a detailed and systematic analysis of the nanostructured state formed in the process of melt quenching and subsequent thermal and deformation effects. It covers the metallurgical and mechanical properties of nanomaterials, focusing particularly on properties derived from nanocrystals and their agglomeration. The text introduces four different types of nanocrystals that can be produced by melt quenching, each having different structures and properties: Type I nanocrystals formed when crystallization takes place completely during melt quenching Type II nanocrystals formed when melt quenching is accompanied by amorphous state formation along with partial or complete crystallization Type III nanocrystals formed when melt quenching results in the formation of the amorphous state, and nanocrystals can be produced as a result of the subsequent thermal effect Type IV nanocrystals formed when melt quenching leads to the formation of the amorphous state, and nanocrystals can be produced as a result of the subsequent deformation effect The possible uses for these materials are extensive, with applications from coatings to biological compatibility. The final section of the book presents a discussion of existing and future applications of nanocrystals produced by different melt-quenching methods.
Описание: Recent developments in the technology of silicon nanocrystals and silicon nanostructures, where quantum-size effects are important, are systematically
described including examples of device applications. Due to the strong quantum confinement effect, the material properties are freed from the usual indirect- or direct-bandgap regime,
and the optical, electrical, thermal, and chemical properties of these nanocrystalline and nanostructured semiconductors are drastically changed from those of bulk silicon. In addition to
efficient visible luminescence, various other useful material functions are induced in nanocrystalline silicon and periodic silicon nanostructures.
Some novel devices and
applications, in fields such as photonics (electroluminescence diode, microcavity, and waveguide), electronics (single-electron device, spin transistor, nonvolatile memory, and ballistic
electron emitter), acoustics, and biology, have been developed by the use of these quantum-induced functions in ways different from the conventional scaling principle for ULSI.
Описание: This unique collection of knowledge represents a comprehensive treatment of the fundamental and practical consequences of size reduction in silicon crystals. This clearly structured reference introduces readers to the optical, electrical and thermal properties of silicon nanocrystals that arise from their greatly reduced dimensions.
Автор: Holger Borchert Название: Solar Cells Based on Colloidal Nanocrystals ISBN: 3319043870 ISBN-13(EAN): 9783319043876 Издательство: Springer Рейтинг: Цена: 12154 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Bridging the disciplinary divide between physics and chemistry, this book presents a new type of solar cell technology with many controllable properties and an extremely promising application as components of photoactive layers derived from liquid media.
Описание: This book gives an overview of the nanostructure and the resulting electronic and optical properties of metal nanoparticles embedded in insulating polymer matrices. The preparation of such materials is reviewed with special attention to thin film deposition techniques. Deposition parameters, chemical and physical properties of the matrix material as well as the application potential of such films are described. Extensive investigations of the nanostructure are presented and detailed descriptions of the particle geometry given. As a result of various diffusion processes during thermal annealing or electron- and laser-beam irradiation, substantial changes of the metal particle size are observed. Extensive measurements of the electronic and optical properties are presented to demonstrate the detailed relationships between nanostructure and elctronic and optical properties. Modelling of the optical properties with various theories is explained in detail.
ООО "Логосфера " Тел:+7(495) 980-12-10 www.logobook.ru