Growth mechanisms of fiber-like and dendrite-like boron in a Cu melt

CrystEngComm ◽  
2018 ◽  
Vol 20 (14) ◽  
pp. 1970-1977
Author(s):  
Yuying Wu ◽  
Zuxin Sun ◽  
Shuo Zhao ◽  
Xiaoxiao Han ◽  
Xiangfa Liu
Keyword(s):  
Dendrite Growth ◽  
Tetragonal Structure ◽  
Rhombohedral Structure ◽  
Growth Mechanisms ◽  
Twin Growth ◽  
Boron Nanowires

There are two types of eutectic boron in Cu–B alloy, i.e. fiber-like eutectic boron and dendrite-like eutectic boron. The fiber-like eutectic boron has a tetragonal structure, and it can be used to prepare boron nanowires. The dendrite-like eutectic boron has a rhombohedral structure, and twin growth facilitates its dendrite growth.

scholarly journals Correction: Lithium dendrite growth mechanisms in polymer electrolytes and prevention strategies

2020 ◽  
Vol 22 (4) ◽  
pp. 2590-2591
Author(s):  
Pallab Barai ◽  
Kenneth Higa ◽  
Venkat Srinivasan
Keyword(s):  
Polymer Electrolytes ◽  
Chem Phys ◽  
Dendrite Growth ◽  
Growth Mechanisms ◽  
Prevention Strategies ◽  
Lithium Dendrite ◽  
Phys Chem Chem Phys

Correction for ‘Lithium dendrite growth mechanisms in polymer electrolytes and prevention strategies’ by Pallab Barai et al., Phys. Chem. Chem. Phys., 2017, 19, 20493–20505.

Lithium dendrite growth mechanisms in liquid electrolytes

Nano Energy ◽  
2017 ◽  
Vol 41 ◽  
pp. 552-565 ◽  
Author(s):  
Aniruddha Jana ◽  
R. Edwin García
Keyword(s):  
Dendrite Growth ◽  
Growth Mechanisms ◽  
Liquid Electrolytes ◽  
Lithium Dendrite

Revealing the effect of local stresses on twin growth mechanisms in titanium using synchrotron X-ray diffraction

2021 ◽  
pp. 117359
Author(s):  
R.J. McCabe ◽  
M. Arul Kumar ◽  
W. Liu ◽  
C.N. Tomé ◽  
L. Capolungo
Keyword(s):  
Growth Mechanisms ◽  
X Ray Diffraction ◽  
X Ray ◽  
Local Stresses ◽  
Twin Growth

Growth of Boron Nanowires by Chemical Vapor Deposition

2007 ◽  
Vol 1017 ◽  
Author(s):  
Li Guo ◽  
Raj N. Singh
Keyword(s):  
Vapor Deposition ◽  
Chemical Vapor ◽  
Growth Mechanisms ◽  
Nano Structures ◽  
Gas Chemistry ◽  
Potential Applications ◽  
Vls Growth ◽  
Boron Nanowires

AbstractMotivated by the extensive research on carbon nanotubes (CNTs), boron and its related nano-structures have attracted increasing interests for potential applications in nanodevices and nanotechnologies due to their extraordinary properties. B-related nanostructures are successfully grown on various substrates in a CVD process. The boron nanowires have diameters around 50-200 nanometers and lengths up to a few microns. The gas chemistry is monitored by the in-situ mass-spectroscopy, which helps to identify reactive species in the process. Modified vapor-solid growths as well as VLS growth mechanisms are proposed for the growth of these nanostructures. The role of the catalysts in the synthesis is also discussed.

scholarly journals Lithium dendrite growth mechanisms in polymer electrolytes and prevention strategies

2017 ◽  
Vol 19 (31) ◽  
pp. 20493-20505 ◽  
Author(s):  
Pallab Barai ◽  
Kenneth Higa ◽  
Venkat Srinivasan
Keyword(s):  
Concentration Profile ◽  
Polymer Electrolytes ◽  
Dendrite Growth ◽  
Computational Domain ◽  
Growth Mechanisms ◽  
Prevention Strategies ◽  
Lithium Deposition ◽  
Phase Map ◽  
Lithium Dendrite

Demonstration of computational domain, concentration profile within electrolyte and phase-map between current and electrolyte modulus highlighting different lithium deposition zones.

BORON NANOWIRES AND NOVELTUBE–CATALYTIC PARTICLE–WIREHYBRID BORON NANOSTRUCTURES

NANO ◽  
2006 ◽  
Vol 01 (01) ◽  
pp. 55-63 ◽  
Author(s):  
TERRY T. XU ◽  
ALAN W. NICHOLLS ◽  
RODNEY S. RUOFF
Keyword(s):  
Electron Microscopy ◽  
Diffraction Analysis ◽  
Elemental Analysis ◽  
Growth Mechanisms ◽  
Microscopy Imaging ◽  
Catalytic Particle ◽  
Nano Structures ◽  
Boron Nanostructures ◽  
Boron Nanowires ◽  
Quartz Tube Furnace

Catalyst-assisted growth of boron nanowires and novel tube–catalytic particle–wire hybrid boron nanostructures were achieved by pyrolysis of diborane at 820–890°C and ~ 200 mTorr in a quartz tube furnace. Electron microscopy imaging and diffraction analysis reveal that most of the nano-structures are amorphous. Elemental analysis by EELS and EDX shows that the nanostructures consist of boron with a small amount of oxygen and carbon. Possible growth mechanisms for the tube–catalytic particle–wire hybrid boron nanostructures are discussed.

scholarly journals Atomic-Scale Comparison Between Twin Growth Mechanisms in Magnesium

2014 ◽  
Vol 2 (3) ◽  
pp. 152-159 ◽  
Author(s):  
L. Leclercq ◽  
L. Capolungo ◽  
D. Rodney
Keyword(s):  
Atomic Scale ◽  
Growth Mechanisms ◽  
Twin Growth

The growth of mica polytypes as studied by conventional and high-resolution TEM

1983 ◽  
Vol 41 ◽  
pp. 174-177
Author(s):  
A. Baronnet ◽  
M. Amouric
Keyword(s):  
Water Pressure ◽  
Point Of View ◽  
Temperature Fields ◽  
Natural Occurrence ◽  
Growth Mechanisms ◽  
Long Period ◽  
High Resolution Tem ◽  
Layer Stacking ◽  
Experimental Works ◽  
Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

Crystal structure images of large gold clusters and growing crystals by HRTEM

1984 ◽  
Vol 42 ◽  
pp. 428-429
Author(s):  
L.R. Wallenberg ◽  
J.-O. Bovin ◽  
G. Schmid
Keyword(s):  
Crystal Structure ◽  
Nucleation And Growth ◽  
Close Packing ◽  
Gold Clusters ◽  
Molecular Weight Determination ◽  
Growth Mechanisms ◽  
Starting Point ◽  
Different Types ◽  
Nucleation And Growth Mechanisms ◽  
Points Of View

Metallic clusters are interesting from various points of view, e.g. as a mean of spreading expensive catalysts on a support, or following heterogeneous and homogeneous catalytic events. It is also possible to study nucleation and growth mechanisms for crystals with the cluster as known starting point.Gold-clusters containing 55 atoms were manufactured by reducing (C6H5)3PAuCl with B2H6 in benzene. The chemical composition was found to be Au9.2[P(C6H5)3]2Cl. Molecular-weight determination by means of an ultracentrifuge gave the formula Au55[P(C6H5)3]Cl6 A model was proposed from Mössbauer spectra by Schmid et al. with cubic close-packing of the 55 gold atoms in a cubeoctahedron as shown in Fig 1. The cluster is almost completely isolated from the surroundings by the twelve triphenylphosphane groups situated in each corner, and the chlorine atoms on the centre of the 3x3 square surfaces. This gives four groups of gold atoms, depending on the different types of surrounding.

A TEM study of the microstructure of avian eggshells

1992 ◽  
Vol 50 (2) ◽  
pp. 1102-1103
Author(s):  
S. Q. Xiao ◽  
S. Baden ◽  
A. H. Heuer
Keyword(s):  
Electron Microscope ◽  
Calcium Carbonate ◽  
Nucleation And Growth ◽  
Growth Mechanisms ◽  
Shell Surface ◽  
Thin Sections ◽  
Polycrystalline Metals ◽  
Transmission Electron ◽  
Nucleation And Growth Mechanisms

The avian eggshell is one of the most rapidly mineralizing biological systems known. In situ, 5g of calcium carbonate are crystallized in less than 20 hrs to fabricate the shell. Although there have been much work about the formation of eggshells, controversy about the nucleation and growth mechanisms of the calcite crystals, and their texture in the eggshell, still remain unclear. In this report the microstructure and microchemistry of avian eggshells have been analyzed using transmission electron microscope (TEM) and energy dispersive spectroscopy (EDS).Fresh white and dry brown eggshells were broken and fixed in Karnosky's fixative (kaltitanden) for 2 hrs, then rinsed in distilled H2O. Small speckles of the eggshells were embedded in Spurr medium and thin sections were made ultramicrotome.The crystalline part of eggshells are composed of many small plate-like calcite grains, whose plate normals are approximately parallel to the shell surface. The sizes of the grains are about 0.3×0.3×1 μm3 (Fig.l). These grains are not as closely packed as man-made polycrystalline metals and ceramics, and small gaps between adjacent grains are visible indicating the absence of conventional grain boundaries.

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