Nanostructure formation

Lopez, P.J., Gautier, C., Livage, J. and Coradin, T. (2005) Mimicking biogenic silica nanostructures formation. Current Nanoscience, 1, 73—83. 

Dimitrios Maroudas, Modeling of Radical-Surface Interactions in the Plasma-Enhanced Chemical Vapor Deposition of Silicon Thin Films Sanat Kumar, M. Antonio Floriano, and Athanassiors Z. Panagiotopoulos, Nanostructured Formation and Phase Separation in Surfactant Solutions Stanley I. Sandler, Amadeu K. Sum, and Shiang-Tai Lin, Some Chemical Engineering Applications of Quantum Chemical Calculations... 

The application of this criterion to cyclic systems on the example of carbon nanostructure formation is given. 

Sanat Kumar, M. Antonio Floriano, and Athanassiors Z. Panagiotopoulos, Nanostructured Formation and Phase Separation in Surfactant Solutions... 

After modification of the organoclay by stearic acid, the interlayer spacing increases from 2.98 to 3.96 nm (Fig. 38). So, the enhancement of the d-space has taken place due to the intercalation of stearic acid into the galleries and this preintercalation seems to make penetration of the rubber molecules easier and pave the way for nanostructure formation of the final composites. 

The present paper focuses on recent progress in experimental, theoretical, and experimental-simulational comparative studies of nanostructure formation in confined geometries that have led to the disclosure of novel fundamental insights. We review in particular the detailed results for the phase behavior and ordering... 

Compatibilization/nanostructure formation for achieving a finer blend morphology by the reduction of both the interfacial tension and coalescence, and for ensuring an improved phase adhesion/nanostructure between the blend partners. Thus, the incorporation of the dispersed blend phase into the cell walls should be enhanced while the number of possible nucleating sites is simultaneously increased. 

It appears that both compatibilization and the nanostructure formation at the interface play a key role for nucleation. The supposed heterogeneous nucleation activity will therefore be discussed in more detail. Heterogeneous nucleation in general is strongly affected by the particle size and the interfacial properties [79, 80], As the particle size of the PPE phase is well above the critical radius of nucleation of several nanometers [80], the interface demands closer examination. 

Melt-compatibilization and nanostructure formation by SBM was identified as a first promising route, significantly enhancing the homogeneity of the foam, and... 

Water Solutions of Amphiphilic Polymers Nanostructure Formation and Possibilities for Catalysis... 

The present review has the following structure. In Sect. 2, the properties of amphiphilic monomers are discussed and a special classification of monomer units according to interfacial and partition properties is described. Also, the possibility of nanostructure formation in polymers composed of amphiphilic monomers is touched upon. This topic is more broadly treated in Sect. 3, where conformational properties of a key class of water-soluble polymers are... 

Rathore, O., and Sogah, D.Y. "Nanostructure formation through p-sheet sheet self-assembly in silk-based materials". Macromolecules 34(5), 1477-1486 (2001). 

Abstract The focus of this chapter is primarily directed towards nanocrystalline soft magnetic materials prepared by crystallization of amorphous precursors. The key elements involved in the development of this class of materials are three-fold (i) theoretical models for magnetic softness in nanostructures (ii) nanostructure-property relationships and (iii) nanostructural formation mechanisms. This chapter surveys recent research on these three areas with emphasis placed on the principles underlying alloy design in soft magnetic nanostructures. 

Two major alloy systems in the family of soft magnetic nanostructures are Fe-Si-B-Nb-Cu [1, 4-6] and Fe-M-B-(Cu) (M= Zr, Hf or Nb) [3, 7-9], commercially known as FINEMET (or VITROPERM) and NANOPERM, respectively. They are produced by primary crystallization of amorphous ribbons. Hence, the nanostructural formation upon crystallization as well as the mechanism of magnetic softening has been actively studied for these two... 

Following this introductory section, we will overview the development of random anisotropy models and discuss the origin of the magnetic softness in nanostructures. The nanostructural formation process and alloy development in the Fe-M-B-(Cu) alloys to which less attention has been addressed in the previous reviews, will be another focal point in this chapter. 

The present work is focused on the investigation of physical and chemical peculiarities in synthesis of carbon nanostructures and the effect of the cooling rate (i.e. the residence time of a carbon atom in the reaction zone) on peculiarities of the formation and morphology of the product. We have compared peculiarities of the formation of the nanostructures synthesized by pyrolysis, the arc method in the gas phase and the arc method in liquid in order to understand the effect of the earliest stages of nucleation on the further process of the nanostructure formation. All the methods are distinguished by the time of interaction between reagents. 

The experiments have shown that with the pyrolytic method of synthesis, in spite of the high duration (1-104 s) of technological process, CNTs are formed at the first moments of interaction and only after that they change their morphology and geometric dimensions. In this case it is of interest to consider the time of nanostructure formation and to know is it limiting at the arc synthesis or these structures are formed much more faster. 

All products produced by three methods have similar morphology at the initial stage of the process. The morphology has undergone changes in the course of the further treatment of product. The synthesis time is one of the key moments in the nanostructure formation. The peculiarities of synthesis and morphology of some products produced by the arc method in the liquid phase are considered and discussed below. 

It is known many ways for obtaining of catalytic nanosize systems. The pyrolysis of systems polymer - salt is one of them. During this process the salts are reduced up to free highly disperse metal particles. These particles are then the catalysts of process of carbon nanostructures formation. 

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