Formation Mechanism of Porous Single-Crystal Cr2O3and Co3O4Templated by Mesoporous Silica

2006 ◽  
Vol 18 (13) ◽  
pp. 3088-3095 ◽  
Author(s):  
Calum Dickinson ◽  
Wuzong Zhou ◽  
Robert P. Hodgkins ◽  
Shi ◽  
Zhao ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Single Crystal ◽  
Formation Mechanism

Single-Crystal Mesoporous Silica Ribbons

2005 ◽  
Vol 44 (2) ◽  
pp. 332-336 ◽  
Author(s):  
Jianfang Wang ◽  
Chia-Kuang Tsung ◽  
Ryan C. Hayward ◽  
Yiying Wu ◽  
Galen D. Stucky
Keyword(s):  
Mesoporous Silica ◽  
Single Crystal

Synthesis and Formation Mechanism of Aminated Mesoporous Silica Nanoparticles

2012 ◽  
Vol 24 (20) ◽  
pp. 3895-3905 ◽  
Author(s):  
Teeraporn Suteewong ◽  
Hiroaki Sai ◽  
Michelle Bradbury ◽  
Lara A. Estroff ◽  
Sol M. Gruner ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Formation Mechanism ◽  
Mesoporous Silica Nanoparticles

scholarly journals Comprehensive understanding of the synthesis and formation mechanism of dendritic mesoporous silica nanospheres

2020 ◽  
Vol 2 (5) ◽  
pp. 1792-1810 ◽  
Author(s):  
Pan Hao ◽  
Bo Peng ◽  
Bing-Qian Shan ◽  
Tai-Qun Yang ◽  
Kun Zhang
Keyword(s):  
Mesoporous Silica ◽  
Formation Mechanism ◽  
Silica Nanospheres ◽  
Comprehensive Understanding ◽  
Mesoporous Silica Nanospheres

The elucidation of structure and formation mechanism of dendritic mesoporous silica nanospheres is in extensive debates. This review summarizes the recent advance on their synthesis and application, and more concerned on their kinetic formation mechanics.

Investigation of Interatomic Potential on Chip Formation Mechanism in Nanometric Cutting Using MD Simulation

2011 ◽  
Vol 312-315 ◽  
pp. 983-988
Author(s):  
Seyed Vahid Hosseini ◽  
Mehrdad Vahdati ◽  
Ali Shokuhfar
Keyword(s):  
Single Crystal ◽  
Formation Mechanism ◽  
Chip Formation ◽  
Morse Potential ◽  
Md Simulation ◽  
Atomic Displacement ◽  
Cutting Process ◽  
Machining Process ◽  
Chip Formation Mechanism ◽  
Eam Potential

Nowadays, the nano-machining process is used to produce high quality finished surfaces with precise form accuracy. To understand and analyze the chip formation mechanism of nano-machining process on an atomistic scale, since the experimentation is not an easy task, numerical simulation such as molecular dynamic (MD) simulation is a very useful method. In this paper, MD simulation of the nano-metric cutting of single-crystal copper was performed with a single crystal diamond tool. The model was solved with both pair wise Morse potential function and embedded atom method (EAM) potential to simulate the inter-atomic force between the work-piece and a rigid tool. The chip formation mechanism, dislocation generation, tool forces and generated temperature were investigated. Results show that the Morse potential cannot perform an appropriate defect formation and plastic deformation in nano-metric cutting of metals. Also, tool forces in Morse potential are more than the forces in EAM potential. Furthermore, the fluctuations of resultant forces in Morse potential are greater than that of EAM. In addition, using many-body interaction potentials like EAM can lead to substantial changes in surface energies, elastic-plastic properties and atomic displacement, compared with the pair-wise potentials like Morse. Finally, the atomic displacement investigation shows that in EAM potential study, only the atoms in a local region near the cutting process are displaced, but in Morse potential a large portion of atoms has affected during cutting process. Subsequently, the chip temperature in EAM potential is more than that of Morse potential.

Synthesis of Platinum Nanowires in Organic−Inorganic Mesoporous Silica Templates by Photoreduction:  Formation Mechanism and Isolation

2004 ◽  
Vol 108 (3) ◽  
pp. 853-858 ◽  
Author(s):  
Yuzuru Sakamoto ◽  
Atsushi Fukuoka ◽  
Takanori Higuchi ◽  
Noriyuki Shimomura ◽  
Shinji Inagaki ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Formation Mechanism ◽  
Platinum Nanowires

Control and formation mechanism of extended nanochannel geometry in colloidal mesoporous silica particles

2017 ◽  
Vol 19 (2) ◽  
pp. 1115-1121 ◽  
Author(s):  
I. Sokolov ◽  
V. Kalaparthi ◽  
D. O. Volkov ◽  
S. Palantavida ◽  
N. E. Mordvinova ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Formation Mechanism ◽  
Silica Particles

Investigation of the nanochannel geometry at the submicron and micron scale, and the mechanism of nanochannel formation at that scale are presented.

scholarly journals Single-Crystal MgO Hollow Nanospheres Formed in RF Impulse Discharge Plasmas

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Satoru Iizuka ◽  
Takumasa Muraoka
Keyword(s):  
Radio Frequency ◽  
Single Crystal ◽  
Formation Mechanism ◽  
Hollow Nanospheres ◽  
Mgo Nanoparticles ◽  
Impulse Discharge ◽  
Discharge Plasmas ◽  
Cooling Model

Spherical MgO nanoparticles with a hollow inside, that is, MgO hollow nanospheres, were created in Ar/O2plasma produced by radio frequency (RF) impulse discharge using a Mg rod electrode. The hollow nanospheres were found on the SiO2plates placed near the powered Mg electrode. The electron refraction pattern showed that each nanosphere was made of a single crystal of MgO. Since the shape was spherical, these nanoparticles seemed to be created during the levitation in the plasma without touching any walls. The formation mechanism with a quasiliquid cooling model was also discussed.

Optically Transparent, Single-Crystal-Like Oriented Mesoporous Silica Films and Plates

1997 ◽  
Vol 101 (50) ◽  
pp. 10610-10613 ◽  
Author(s):  
Ryong Ryoo ◽  
Chang Hyun Ko ◽  
Sung June Cho ◽  
Ji Man Kim
Keyword(s):  
Mesoporous Silica ◽  
Single Crystal ◽  
Silica Films ◽  
Optically Transparent
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