New Insights into the Growth Mechanism of Ultrathin Au Nanowires from Combined in Situ EXAFS and SAXS Studies

2018 ◽  
Vol 122 (50) ◽  
pp. 29051-29061 ◽  
Author(s):  
Fernando Pschunder ◽  
Julieta Puig ◽  
Lisandro J. Giovanetti ◽  
Cristián Huck-Iriart ◽  
Félix G. Requejo ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Au Nanowires ◽  
In Situ Exafs

Strong metal-support interaction in Ni/TiO2 catalysts: in situ EXAFS and related studies

1993 ◽  
Vol 17 (1-2) ◽  
pp. 29-37 ◽  
Author(s):  
T. Arunarkavalli ◽  
G. U. Kulkarni ◽  
G. Sankar ◽  
C. N. R. Rao
Keyword(s):  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
In Situ Exafs ◽  
Strong Metal Support Interaction

Growth Mechanism of in-situ Synthesized TiC and TiB2by Laser Cladding

2009 ◽  
Vol 36 (5) ◽  
pp. 1287-1291 ◽  
Author(s):  
雷贻文 Lei Yiwen ◽  
孙荣禄 Sun Ronglu ◽  
唐英 Tang Ying
Keyword(s):  
Laser Cladding ◽  
Growth Mechanism

scholarly journals In-situ HRTEM observations of growth process of decagonal quasicrystals

2014 ◽  
Vol 70 (a1) ◽  
pp. C97-C97
Author(s):  
Keisuke Nagao ◽  
Kazue Nishimoto ◽  
Tomoaki Inuduka ◽  
Keiichi Edagawa
Keyword(s):  
Growth Mechanism ◽  
Growth Process ◽  
Structural Information ◽  
Growth Models ◽  
Experimental Studies ◽  
Unit Cell ◽  
Small Scale ◽  
Growth Processes ◽  
Decagonal Quasicrystals

Quasicrystals possess quasiperiodicity, where the structure cannot be described simply by the repetition of unit cell like conventional crystals. This fact raises the question of how quasicrystals grow, i.e., what physical mechanism makes the growth of quasicrystals possible. While crystals can grow by copying a unit cell via local atomic interactions, nonlocal structural information seems to be required in the growth of quasicrystals. This problem has attracted much attention ever since the first discovery of a quasicrystal in 1984, and several theoretical growth models [1] have been proposed. However, no experimental studies have so far been reported, and it is still unclear whether these theoretical growth models apply to real quasicrystals. In the present study, we have conducted in-situ high-temperature electron microscopic (HRTEM: High-Resolution Transmission Electron Microscopy) observations of the growth process of decagonal quasicrystals to elucidate the growth mechanism. The growth processes of a decagonal quasicrystal of Al70.8Ni19.7Co9.5were observed by HRTEM in the temperature range 1073-1173K. Tiling patterns with edge length of about 2nm were constructed from a series of HRTEM images. They were analysed in the framework of the projection method. Here, we followed the procedures in our previous work [2]. We have already reported the results of some observations and analyses elsewhere [3]. However, the growth processes of them were on a small scale, and the results were indefinite. Recently, we have succeeded in observing a growth process on a massive scale. In this paper, we present the results of this observation and subsequent analyses, and discuss the growth mechanism of the quasicrystal.

Room Temperature Growth of Ultrathin Au Nanowires with High Areal Density over Large Areas by in Situ Functionalization of Substrate

Langmuir ◽  
2014 ◽  
Vol 30 (42) ◽  
pp. 12690-12695 ◽  
Author(s):  
Subhajit Kundu ◽  
Annamalai Leelavathi ◽  
Giridhar Madras ◽  
N. Ravishankar
Keyword(s):  
Room Temperature ◽  
Areal Density ◽  
Temperature Growth ◽  
Au Nanowires ◽  
In Situ Functionalization

Study on in-Situ Preparation and Growth Mechanism of TiCxN1-x Whiskers

2011 ◽  
Vol 197-198 ◽  
pp. 617-622
Author(s):  
Xue Wen Chong ◽  
Chuan Zhen Huang ◽  
Liang Xu ◽  
Bin Zou ◽  
Han Lian Liu ◽  
...  
Keyword(s):  
Growth Mechanism ◽  
Carbothermal Reduction ◽  
Reduction Process ◽  
Vapor Liquid Solid ◽  
Mixed Powder ◽  
Vapor Liquid Solid Mechanism ◽  
Vapor Liquid

TiCxN1-x whiskers were prepared using TiO2 and carbon mixed powder as the starting powder at the atmosphere of nitrogen by the carbothermal reduction process. NaCl and NiCl2 were added into the starting powder as the cosolvent and growth adds of impurities, respectively. An effect of the content of TiO2 and carbon in the starting powder on the TiCxN1-x whiskers was investigated. It is found from SEM and XRD observations that three types of TiCx N1-x whiskers are obtained when the different mol ratios of C and Ti are applied. The growth of whiskers is not only urged by the droplet on the top of whiskers, but also initiated by the helical dislocations. The growth of TiCxN1-x whiskers is controlled by the vapor-liquid-solid mechanism as well as vapor-solid mechanism.

Observing the Growth Mechanism of Au-ZnO Core-Shell Nanoparticles by In-Situ Liquid Cell TEM

2020 ◽  
Vol MA2020-01 (45) ◽  
pp. 2572-2572
Author(s):  
Shin-Bei Tsai ◽  
Chih-Yang Huang ◽  
Jui-Yuan Chen ◽  
Wen-Wei Wu
Keyword(s):  
Growth Mechanism ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Liquid Cell ◽  
Core Shell Nanoparticles
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