Growth mechanism of icosahedral and other five-fold symmetric diamond crystals

2015 ◽  
Vol 25 (5) ◽  
pp. 1587-1598 ◽  
Author(s):  
Qiu-ping WEI ◽  
Li MA ◽  
Jun YE ◽  
Zhi-ming YU
Keyword(s):  
Growth Mechanism ◽  
Diamond Crystals

Effect of pressure on synthetic diamond crystals at high temperatures and pressures in Fe/Ni catalyst system

CrystEngComm ◽  
2021 ◽  
Author(s):  
Shuai Fang ◽  
Yongkui Wang ◽  
Liangchao Chen ◽  
Zhiyun Lu ◽  
Zhenghao Cai ◽  
...  
Keyword(s):  
Nitrogen Content ◽  
Growth Mechanism ◽  
Synthetic Diamond ◽  
Natural Diamond ◽  
Catalyst System ◽  
Necessary Condition ◽  
Ni Catalyst ◽  
Effect Of Pressure ◽  
Diamond Crystals ◽  
System P

Pressure is a necessary condition for the growth of natural diamond. Studying the effect of pressure on the nitrogen content of diamond is important for exploring the growth mechanism of...

The Growth Mechanism of Diamond Crystals in Acetylene Flames

1990 ◽  
Vol 29 (Part 1, No. 8) ◽  
pp. 1552-1560 ◽  
Author(s):  
Yasuji Matsui ◽  
Hideki Yabe ◽  
Yoichi Hirose
Keyword(s):  
Growth Mechanism ◽  
Diamond Crystals

The characteristics of Ib diamond crystals synthesized in a Fe–Ni–C system with different SiC contents

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yongkui Wang ◽  
Zhiwen Wang ◽  
Zhiyun Lu ◽  
Zhenghao Cai ◽  
Shuai Fang ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Growth Mechanism ◽  
Natural Diamond ◽  
Synthetic Diamonds ◽  
Diamond Crystals ◽  
Diamond Inclusions

Silicon carbide (SiC) is a substance found in natural diamond inclusions. Analyzing the influence of SiC doping on the properties of synthetic diamonds is vital to understanding the growth mechanism...

Montmorillonite Dendrites

1974 ◽  
Vol 32 ◽  
pp. 454-455
Author(s):  
Necip Güven ◽  
Rodney W. Pease
Keyword(s):  
Crystal Growth ◽  
Growth Mechanism ◽  
Growth Front ◽  
Morphological Features ◽  
Dendritic Crystal ◽  
Crystal Growth Mechanism

Morphological features of montmorillonite aggregates in a large number of samples suggest that they may be formed by a dendritic crystal growth mechanism (i.e., tree-like growth by branching of a growth front).

Structural phenomena in the growth of carbon nanotubes

1993 ◽  
Vol 51 ◽  
pp. 750-751
Author(s):  
Jun Jiao
Keyword(s):  
Carbon Nanotubes ◽  
Growth Mechanism ◽  
Carbonaceous Material ◽  
Cluster Growth ◽  
Structural Elements ◽  
Rich Variety ◽  
Different Shapes ◽  
Point To Point

HREM studies of the carbonaceous material deposited on the cathode of a Huffman-Krätschmer arc reactor have shown a rich variety of multiple-walled nano-clusters of different shapes and forms. The preparation of the samples, as well as the variety of cluster shapes, including triangular, rhombohedral and pentagonal projections, are described elsewhere.The close registry imposed on the nanotubes, focuses attention on the cluster growth mechanism. The strict parallelism in the graphitic separation of the tube walls is maintained through changes of form and size, often leading to 180° turns, and accommodating neighboring clusters and defects. Iijima et. al. have proposed a growth scheme in terms of pentagonal and heptagonal defects and their combinations in a hexagonal graphitic matrix, the first bending the surface inward, and the second outward. We report here HREM observations that support Iijima’s suggestions, and add some new features that refine the interpretation of the growth mechanism. The structural elements of our observations are briefly summarized in the following four micrographs, taken in a Hitachi H-8100 TEM operating at an accelerating voltage of 200 kV and with a point-to-point resolution of 0.20 nm.

Sign in / Sign up

Export Citation Format

Share Document