Side-by-side silicon carbide–silica biaxial nanowires: Synthesis, structure, and mechanical properties

Abstract

Articles you may be interested inA crossover in the mechanical response of silicon carbide due to the accumulation of chemical disorder Elevated-temperature synthesis has been used to generate side-by-side biaxially structured silicon carbide-silica nanowires. The axial growth direction approaches ͓311͔ for nanowires with a high density of microtwins and is ͓211͔ for defect-free nanowires. The structure of these nanowires, their cross-sectional shape, and their structural transformation between a biaxial and coaxial configuration have been studied by transmission electron microscopy. The Young's modulus of the biaxially structured nanowires was measured to be 50-70 GPa depending on the size of the nanowire.

SnOx Nanocrystallites Supported by Silica Nanostructures

“…The apparatus used in the synthesis of the SnO x / SiO 2 heterostructure depicted in Figure 1 was operated with a few significant modifications from those discussed previously. 4,12,13 UHP argon entrainment gas was again made to pass over a crucible located in the central region of the inner tube of a sealed double concentric alumina tube-oven configuration heated by a Lindbergh-Blue furnace. The parameters controlled in this experiment were (1) argon flow rate, (2) total tube gas pressure, (3) central region temperature, and (4) temperature gradients to the end regions.…”

“…10,11 Thus, the ability to disperse extremely small SnO x (x ) 1-2) nanocrystallites on a nanostructured silica substrate can have important consequences for future sensor technology. In addition, it can play an important role in advanced acid catalysis 12,13 and in the detection of algacides.…”

Effect of the addition of TEOS on the SiC fibers fabricated by electrospinning

“…The size and morphology can affect their applications as catalysts, solar cells, light-emitting diodes and biological labeling [1][2][3]. As a semiconducting material, silicon carbide (SiC) possesses excellent physical and electronic properties such as high mechanical strength, high thermal stability and high thermal conductivity [4]. It also has wide applications including field emission displays, nano-sensors and other nanoscale devices [5,6].…”

Graphene-templated approach to ultrathin silica nanosheets

“…Despite the big progress made in the field of 2D nanomaterials, 2D silica nanosheets have rarely been reported. Silica nanostructures have been widely researched in recent years for their unique size-dependent properties which lead to potential utilization in both fundamental science and industrial research [7][8][9]. Consequently, 1D silica nanostructures (e.g.…”

“…Consequently, 1D silica nanostructures (e.g. nanowires [9], nanotubes [10,11] and nanorods [12]) as well as 3D silica nanostructures (e.g. nanoparticles [13,14] and nanocubes [15]) have been widely investigated.…”