Journal ArticleDOI
Laser Ablation Synthesis and Optical Characterization of Silicon Carbide Nanowires
TLDR
In this article, the growth morphology, microstructure, and defects in SiC nanowires were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscope (HRTEM).Abstract:
Silicon carbide (SiC) nanowires were synthesized at 900°C by the laser ablation technique. The growth morphology, microstructure, and defects in SiC nanowires were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The Raman scattering study indicated that the Raman peaks corresponding to the TO and LO phonon modes of the SiC nanowires had larger red shifts compared to those of bulk SiC material. The red shift, broadening peak, and the asymmetry of the Raman peak could be explained by the size confinement effect in the radial and growth directions. The growth mechanism of SiC nano-wires was discussed based on the vapor–liquid–solid reaction.read more
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One dimensional nanostructured materials
TL;DR: In this paper, the authors focus on the science behind the synthesis and properties of the ODNS rather than the device fabrication, and discuss current research related to environment and toxicology effects and current challenges in this rapidly evolving field.
Journal ArticleDOI
Growth of nanowires
Ning Wang,Yuan Cai,Ruiqin Zhang +2 more
TL;DR: In this paper, the status of research on the formation of nanowire structures via highly anisotropic growth of nanocrystals of semiconductor and metal oxide materials with an emphasis on the structural characterization of the nucleation, initial growth, defects and interface structures.
Journal ArticleDOI
Review on the physicochemical treatments of rice husk for production of advanced materials
TL;DR: A critical review on the processing and application of rice husks (RHs) for the production of various silicon-based materials and of active carbon is presented in this paper, which addresses the different processing methods, the effects of various process parameters on the pyrolysis stage, the influence of physical, chemical and thermal treatments, activating conditions and activated carbon consolidation mechanisms.
Journal ArticleDOI
Raman spectroscopy of optical phonon confinement in nanostructured materials
TL;DR: In this paper, a review of the results on the Raman spectroscopic investigations of optical phonon confinement in nanocrystalline semiconductor and ceramic/dielectric materials, including those in selenium, cadmium sulphide, zinc oxide, thorium oxide, and nano-diamond, is presented.
Journal ArticleDOI
Low-dimensional SiC nanostructures: Fabrication, luminescence, and electrical properties
TL;DR: In this paper, the fabrication methods as well as optical and electrical characteristics of silicon carbide nanocrystals, nanowires, nanotubes, and nanosized films are reviewed.
References
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Journal ArticleDOI
Nanobeam mechanics: Elasticity, strength, and toughness of nanorods and nanotubes
TL;DR: In this paper, the Young's modulus, strength, and toughness of nanostructures are evaluated using an atomic force microscopy (AFM) approach. And the results showed that the strength of the SiC NRs were substantially greater than those found previously for larger SiC structures, and they approach theoretical values.
Journal ArticleDOI
A laser ablation method for the synthesis of crystalline semiconductor nanowires
TL;DR: Studies carried out with different conditions and catalyst materials confirmed the central details of the growth mechanism and suggest that well-established phase diagrams can be used to predict rationally catalyst materials and growth conditions for the preparation of nanowires.
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Synthesis and characterization of carbide nanorods
TL;DR: In this article, an alternative approach to the synthesis of nanoscale structures based on nanotubes, in which the tubes are converted to carbide rods by reaction with volatile oxide and/or halide species.
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Fundamental aspects of VLS growth
TL;DR: In this article, a new method for simultaneous determination of kinetic coefficients and of supersaturations has been developed, which can be used to measure the coefficients of some materials as well as the temperature dependence of the coefficient for silicon and the activation energy of the process.
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Conductivity enhancement in single-walled carbon nanotube bundles doped with K and Br
TL;DR: In this article, the authors report the doping of bulk samples of carbon nanotubes by vapour-phase reactions with bromine and potassium, a prototypical electron acceptor and donor respectively.