scholarly journals Early steps of the film growth mechanism in self-assembled multilayers of PAH and PSS on silica

2006 ◽  
Vol 288 (1-3) ◽  
pp. 26-35 ◽  
Author(s):  
J. Dejeu ◽  
L. Buisson ◽  
M.C. Guth ◽  
C. Roidor ◽  
F. Membrey ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Film Growth ◽  
Self Assembled

scholarly journals Effect of Nitrogen on the Growth of (100)-, (110)-, and (111)-Oriented Diamond Films

2020 ◽  
Vol 11 (1) ◽  
pp. 126
Author(s):  
Jen-Chuan Tung ◽  
Tsung-Che Li ◽  
Yen-Jui Teseng ◽  
Po-Liang Liu
Keyword(s):  
Growth Mechanism ◽  
Density Functional ◽  
Film Growth ◽  
Hydrogen Abstraction ◽  
Diamond Films ◽  
Activation Energies ◽  
Diamond Surface ◽  
Nitrogen Doped ◽  
Nitrogen Substitution ◽  
Diamond Film Growth

The aim of this research is the study of hydrogen abstraction reactions and methyl adsorption reactions on the surfaces of (100), (110), and (111) oriented nitrogen-doped diamond through first-principles density-functional calculations. The three steps of the growth mechanism for diamond thin films are hydrogen abstraction from the diamond surface, methyl adsorption on the diamond surface, and hydrogen abstraction from the methylated diamond surface. The activation energies for hydrogen abstraction from the surface of nitrogen-undoped and nitrogen-doped diamond (111) films were −0.64 and −2.95 eV, respectively. The results revealed that nitrogen substitution was beneficial for hydrogen abstraction and the subsequent adsorption of methyl molecules on the diamond (111) surface. The adsorption energy for methyl molecules on the diamond surface was generated during the growth of (100)-, (110)-, and (111)-oriented diamond films. Compared with nitrogen-doped diamond (100) films, adsorption energies for methyl molecule adsorption were by 0.14 and 0.69 eV higher for diamond (111) and (110) films, respectively. Moreover, compared with methylated diamond (100), the activation energies for hydrogen abstraction were by 0.36 and 1.25 eV higher from the surfaces of diamond (111) and (110), respectively. Growth mechanism simulations confirmed that nitrogen-doped diamond (100) films were preferred, which was in agreement with the experimental and theoretical observations of diamond film growth.

Growth Mechanism of Self-Assembled TixWyO Nanotubes Fabricated by TiW Alloy Anodization

2018 ◽  
Vol 165 (10) ◽  
pp. D477-D481 ◽  
Author(s):  
Yung-Huang Chang ◽  
Yuan-Tsung Chen ◽  
Chien-Sheng Huang ◽  
Chia-Ling Lu ◽  
Shih-Hung Lee ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Self Assembled

Hard Carbon Films with Various Microstructure Prepared by Ion Assisted Evaporation

1993 ◽  
Vol 316 ◽  
Author(s):  
J. Ullmann ◽  
A. Weber ◽  
U. Falke
Keyword(s):  
Growth Mechanism ◽  
Film Growth ◽  
Carbon Films ◽  
Carbon Surface ◽  
Vickers Indentation ◽  
Structure Modification ◽  
Hard Carbon ◽  
Ion Etching ◽  
Ion Energy ◽  
Free Ion

ABSTRACTFor a deeper understanding of the creation of carbon films the hydrogen-free ion assisted evaporation (IAE) method with neon species was used. Variation of the ion parameters energy and ion to neutral arrival ratio, delivering the necessary energy for modification of the film growth, results in different microstructures investigated with EELS, HRTEM and TED as well as different microhardnesses measured by dynamical Vickers indentation. A possible film growth mechanism is proposed based on an ion etching of mainly sp2-bonded carbon surface atoms and on defect dominated structure modification below the surface depending on the ion energy

Film Growth Mechanism of Photo-Chemical Vapor Deposition

1987 ◽  
Vol 105 ◽  
Author(s):  
T. Inushima ◽  
N. Hirose ◽  
K. Urata ◽  
K. Ito ◽  
S. Yamazaki
Keyword(s):  
Chemical Vapor Deposition ◽  
Growth Mechanism ◽  
Vapor Deposition ◽  
Decay Constant ◽  
Film Growth ◽  
Chemical Vapor ◽  
Active Species ◽  
Surface Migration ◽  
Show Temperature Dependence ◽  
Substrate Size

AbstractThe photo-chemical vapor deposition (CVD) of SiO2 and SiN2 were investigated using 185 nm light of a low pressure mercury lamp. The film thickness deposited on the substrate was the function of the distance from the substrate to the light source and its relation was investigated by changing the reaction pressure. From these investigations, the space migration length of the active species was estimated, which was, at the processing pressure of 400 Pa, about 10–20 mm. This migration length was confirmed by a model calculation. The step coverage of the film was investigated by the use of a two-dimensional capillary cavity. It was shown that the thickness decayed exponentially with the depth in the cavity. The decay constant did not show temperature dependence. From this result, the surface migration of the active species produced by photo-CVD was reported. To confirm this migration we presented a substrate- size effect of photo-CVD, which became obvious when the substrate size became smaller than the space migration length of the active species. From these results, the film growth mechanism of photo-CVD was discussed.

Direct synthesis of self-assembled ZSM-5 microsphere with controllable mesoporosity and its enhanced LDPE cracking properties

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38671-38679 ◽  
Author(s):  
Jian Ding ◽  
Jiangbo Hu ◽  
Teng Xue ◽  
Yimeng Wang ◽  
Haihong Wu ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Direct Synthesis ◽  
P Diffusion ◽  
Self Assembled

Diffusion-enhanced ZSM-5 aggregates by n-hexylamine directing are obtained with easy control on mesopore and the possible growth mechanism is proposed.

Crystal growth mechanism of VLS-Sm1+xBa2−xCu3Oy films including self-assembled BaZrO3 nanorods

2009 ◽  
Vol 469 (15-20) ◽  
pp. 1414-1417 ◽  
Author(s):  
S. Funaki ◽  
Y. Yoshida ◽  
Y. Ichino ◽  
Y. Takai ◽  
A. Ichinose ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Growth Mechanism ◽  
Crystal Growth Mechanism ◽  
Self Assembled
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