Experimental Verification of the Cluster Effect on Giant Step Bunching on 4H-SiC (0001) Surfaces

2010 ◽  
Vol 645-648 ◽  
pp. 543-546 ◽  
Author(s):  
Yuuki Ishida ◽  
Tetsuo Takahashi ◽  
Hajime Okumura ◽  
Kazuo Arai ◽  
Sadafumi Yoshida
Keyword(s):  
Thermal Decomposition ◽  
Chemical Reaction ◽  
Experimental Verification ◽  
Reaction Model ◽  
Carbon Clusters ◽  
Cluster Effect ◽  
Step Bunching ◽  
Giant Step ◽  
Chemical Reaction Model

In this study, we investigated the cluster effect on the occurrence of giant step bunching. We generated carbon clusters on 4H-SiC (0001) surfaces by thermal decomposition of SiC in an Ar atmosphere and controlled the surface concentrations of the clusters by adding H2 gas. We found the boundaries between surfaces with and without giant steps to show Arrhenius-type behavior. This behavior agreed with our predictions deduced from a chemical reaction model that takes the cluster effect into account, suggesting that giant step bunching is attributable to the formation of clusters on SiC.

scholarly journals Development of an Uncertainty Quantification Predictive Chemical Reaction Model for Syngas Combustion

2017 ◽  
Vol 31 (3) ◽  
pp. 2274-2297 ◽  
Author(s):  
N. A. Slavinskaya ◽  
M. Abbasi ◽  
J. H. Starcke ◽  
R. Whitside ◽  
A. Mirzayeva ◽  
...  
Keyword(s):  
Uncertainty Quantification ◽  
Chemical Reaction ◽  
Reaction Model ◽  
Syngas Combustion ◽  
Chemical Reaction Model

scholarly journals Qualitative analysis of an autocatalytic chemical reaction model with decay

2014 ◽  
Vol 144 (2) ◽  
pp. 427-446 ◽  
Author(s):  
Jun Zhou ◽  
Junping Shi
Keyword(s):  
Steady State ◽  
Chemical Reaction ◽  
Reaction Diffusion ◽  
Steady State Solution ◽  
Reaction Model ◽  
Existence Of A Solution ◽  
Positive Steady State ◽  
Chemical Reaction Model ◽  
The One ◽  
Necessary And Sufficient

In this paper, we revisit a reaction—diffusion autocatalytic chemical reaction model with decay. For higher-order reactions, we prove that the system possesses at least two positive steady-state solutions; hence, it has bistable dynamics similar to the system without decay. For the linear reaction, we determine the necessary and sufficient condition to ensure the existence of a solution. Moreover, in the one-dimensional case, we prove that the positive steady-state solution is unique. Our results demonstrate the drastic difference in dynamics caused by the order of chemical reactions.

Coarse-Grained Chemical Reaction Model

2004 ◽  
Vol 108 (6) ◽  
pp. 1815-1821 ◽  
Author(s):  
Yaroslava G. Yingling ◽  
Barbara J. Garrison
Keyword(s):  
Chemical Reaction ◽  
Reaction Model ◽  
Coarse Grained ◽  
Chemical Reaction Model

G703 Development of Mezzo-Scale Thermo-Physical Model and Chemical Reaction Model for Supercritical Combustion Flow(1)

2007 ◽  
Vol 2007 (0) ◽  
pp. _G703-a_
Author(s):  
Nobuyuki TSUBOI ◽  
Nobuhiro YAMANISHI ◽  
Shinichi TSUDA ◽  
Youhi MORII ◽  
Kazuya SHIMIZU ◽  
...  
Keyword(s):  
Physical Model ◽  
Chemical Reaction ◽  
Reaction Model ◽  
Chemical Reaction Model ◽  
Combustion Flow ◽  
Supercritical Combustion
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