Cluster growth in supersonic jets of CO[sub 2] through a slit nozzle

2012 ◽  
Author(s):  
A. Ramos ◽  
G. Tejeda ◽  
J. M. Fernández ◽  
S. Montero
Keyword(s):  
Supersonic Jets ◽  
Cluster Growth

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.

Noise measurements in supersonic jets treated with the Mach wave elimination method

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 154-160 ◽  
Author(s):  
Dimitri Papamoschou ◽  
Marco Debiasi
Keyword(s):  
Supersonic Jets ◽  
Elimination Method ◽  
Mach Wave ◽  
Noise Measurements

Screech tones of supersonic jets from bevelled rectangular nozzles

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 1119-1125 ◽  
Author(s):  
Christopher K. W. Tam ◽  
Hao Shen ◽  
Ganesh Raman
Keyword(s):  
Supersonic Jets ◽  
Screech Tones

Mach wave elimination in supersonic jets

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 1604-1611
Author(s):  
Dimitri Papamoschou
Keyword(s):  
Supersonic Jets ◽  
Mach Wave

Velocity, Temperature and Density Measurements in Supersonic Jets

2021 ◽  
Author(s):  
Mark P. Wernet ◽  
Nicholas J. Georgiadis ◽  
Randy J. Locke
Keyword(s):  
Supersonic Jets ◽  
Density Measurements
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