Spontaneous Nucleation and Growth of GaN Nanowires: The Fundamental Role of Crystal Polarity

Nano Letters ◽  
2012 ◽  
Vol 12 (12) ◽  
pp. 6119-6125 ◽  
Author(s):  
Sergio Fernández-Garrido ◽  
Xiang Kong ◽  
Tobias Gotschke ◽  
Raffaella Calarco ◽  
Lutz Geelhaar ◽  
...  
Keyword(s):  
Nucleation And Growth ◽  
Spontaneous Nucleation ◽  
Gan Nanowires

scholarly journals Study of Nucleation and Growth in the Organometallic Synthesis of Magnetic Alloy Nanocrystals: The Role of Nucleation Rate in Size Control of CoPt3 Nanocrystals.

ChemInform ◽  
2003 ◽  
Vol 34 (42) ◽  
Author(s):  
Elena V. Shevchenko ◽  
Dmitri V. Talapin ◽  
Heimo Schnablegger ◽  
Andreas Kornowski ◽  
Oerjan Festin ◽  
...  
Keyword(s):  
Nucleation Rate ◽  
Size Control ◽  
Nucleation And Growth ◽  
Magnetic Alloy ◽  
Organometallic Synthesis ◽  
Alloy Nanocrystals

Preferred Orientations for Sol-Gel Derived Plzt Thin Layers

1993 ◽  
Vol 310 ◽  
Author(s):  
Toshihiko Tani ◽  
Zhengkui Xu ◽  
David A. Payne
Keyword(s):  
Heat Treatment ◽  
Surface Energy ◽  
Sol Gel ◽  
Nucleation And Growth ◽  
Thin Layers ◽  
Energy Conditions ◽  
Chemical Characteristics ◽  
Interfacial Chemistry ◽  
Si Substrates

AbstractPLZT thin layers were deposited onto various substrates by sol-gel methods, and crystallized under different conditions and substrate treatments. Relationships are given for the chemical characteristics of the substrate's surface and the preferred orientations which develop on heat treatment. A preferred (111) orientation always developed for perovskite crystallized on Pt layers which contained Ti on the surface. This was attributed to the formation of Pt3Ti and the role of heteroepitaxial nucleation and growth sites. In addition, a preferred (100) orientation was also obtained on unannealed Pt/Ti/SiO2/Si substrates which were free of Ti on the surface. This was attributed to self-textured growth with flat faces striving for minimum surface energy conditions. The results are discussed in terms of the importance of interfacial chemistry on the control of texture for crystallization of PLZT thin layers on coated substrates.

scholarly journals The role of graphene/graphene oxide in cement hydration

2021 ◽  
Vol 10 (1) ◽  
pp. 768-778
Author(s):  
Shaoqiang Meng ◽  
Xiaowei Ouyang ◽  
Jiyang Fu ◽  
Yanfei Niu ◽  
Yuwei Ma
Keyword(s):  
Graphene Oxide ◽  
Cement Paste ◽  
Cement Hydration ◽  
Isothermal Calorimetry ◽  
High Mobility ◽  
Nucleation And Growth ◽  
Early Hydration ◽  
Mobility Of Ions ◽  
Cement Surface

Abstract Graphene (G) and graphene oxide (GO) have been shown to significantly improve the mechanical properties of cement-based materials. In this study, the effect of the G/GO on cement hydration was investigated. First, the zeta potential of G/GO in simulated solutions was tested, and the interaction between G/GO’s surface and Ca2+ was explored. Subsequently, scanning electron microscopy was used to observe the morphology of C–S–H nucleation and growth on the cement surface in the cement paste containing G/GO. Furthermore, XRD and TGA analyses were carried out on the hydration products of the sample. At last, isothermal calorimetry was applied to investigate the influence of G/GO on the early hydration of cement. The results showed that the addition of G/GO significantly accelerates C–S–H nucleation and growth on the cement surface. It is indicated that the high mobility ions derived by G/GO in the cement paste dominate the reason for the accelerated hydration of cement. The presence of G, especially GO, facilitates the mobility of ions, especially Ca2+, thus enhances the interaction between the cement surface and the ions. This strong interaction promotes the C–S–H nucleation and growth, and therefore, the hydration of the cement.

Dynamic observations of vesiculation reveal the role of silicate crystals in bubble nucleation and growth in andesitic magmas

Lithos ◽  
2018 ◽  
Vol 296-299 ◽  
pp. 532-546 ◽  
Author(s):  
P. Pleše ◽  
M.D. Higgins ◽  
L. Mancini ◽  
G. Lanzafame ◽  
F. Brun ◽  
...  
Keyword(s):  
Nucleation And Growth ◽  
Bubble Nucleation

scholarly journals Role of microstructure on twin nucleation and growth in HCP titanium: A statistical study

2018 ◽  
Vol 148 ◽  
pp. 123-132 ◽  
Author(s):  
M. Arul Kumar ◽  
M. Wroński ◽  
R.J. McCabe ◽  
L. Capolungo ◽  
K. Wierzbanowski ◽  
...  
Keyword(s):  
Statistical Study ◽  
Nucleation And Growth ◽  
Twin Nucleation

Nucleation and Growth of GaN Nanowires on Si(111) Performed by Molecular Beam Epitaxy

Nano Letters ◽  
2007 ◽  
Vol 7 (8) ◽  
pp. 2248-2251 ◽  
Author(s):  
Raffaella Calarco ◽  
Ralph J. Meijers ◽  
Ratan K. Debnath ◽  
Toma Stoica ◽  
Eli Sutter ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Nucleation And Growth ◽  
Gan Nanowires

Elucidating the Role of AgCl in the Nucleation and Growth of Silver Nanoparticles in Ethylene Glycol

2017 ◽  
Vol 18 (1) ◽  
pp. 324-330 ◽  
Author(s):  
Suyue Chen ◽  
Jesse L. Carey ◽  
David R. Whitcomb ◽  
Philippe Bühlmann ◽  
R. Lee Penn
Keyword(s):  
Silver Nanoparticles ◽  
Ethylene Glycol ◽  
Nucleation And Growth

Role of Nd3+ ions on the nucleation and growth of PbS quantum dots (QDs) in silicate glasses

2017 ◽  
Vol 100 (7) ◽  
pp. 2879-2884 ◽  
Author(s):  
Won Ji Park ◽  
Min Gyu Kim ◽  
Ju Eun Kim ◽  
Jing Wang ◽  
Ho Jeong Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nucleation And Growth ◽  
Silicate Glasses ◽  
Pbs Quantum Dots
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