Silicate ionic liquid synthesis of zeolite merlinoite: Crystal size control from crystalline nanoaggregates to micron-sized single-crystals

2014 ◽  
Vol 198 ◽  
pp. 35-44 ◽  
Author(s):  
Mohamed Haouas ◽  
Louwanda Lakiss ◽  
Charlotte Martineau ◽  
Jaafar El Fallah ◽  
Valentin Valtchev ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Single Crystals ◽  
Crystal Size ◽  
Size Control

Synthesis and size control of Si nanocrystals by SiO/SiO2 superlattices and Er doping

2002 ◽  
Vol 737 ◽  
Author(s):  
J. Heitmann ◽  
D. Kovalev ◽  
M. Schmidt ◽  
L.X. Yi ◽  
R. Scholz ◽  
...  
Keyword(s):  
Phase Separation ◽  
Crystal Size ◽  
Radiative Lifetime ◽  
Size Control ◽  
Luminescence Signal ◽  
Er Doping ◽  
Size Dependent ◽  
Transmission Electron ◽  
Si Nanocrystals ◽  
Ultrathin Layers

ABSTRACTThe synthesis of nc-Si by reactive evaporation of SiO and subsequent thermal induced phase separation is reported. The size control of nc-Si is realized by evaporation of SiO/SiO2 superlattices. By this method an independent control of crystal size and density is possible. The phase separation of SiO into SiO2 and nc-Si in the limit of ultrathin layers is investigated. Different steps of this phase separation are characterized by photoluminescence, infrared absorption and transmission electron microscopy measurements. The strong room temperature luminescence of nc-Si shows a strong blueshift of the photoluminescence signal from 850 to 750 nm with decreasing crystal size. Several size dependent properties of this luminescence signal, like decreasing radiative lifetime and increasing no-phonon transition properties with decreasing crystal size are in good agreement with the quantum confinement model. Er doping of the nc-Si shows an enhancement of the Er luminescence at 1.54 μm by a factor of 5000 compared to doped SiO2 layers. The decreasing transfer time for the nc-Si to Er transition with decreasing crystal size can be understood as additional proof of increasing recombination probability within the nc-Si for decreasing crystal size.

scholarly journals Pore and ligament size control, thermal stability and mechanical properties of nanoporous single crystals of gold

Nanoscale ◽  
2017 ◽  
Vol 9 (38) ◽  
pp. 14458-14466 ◽  
Author(s):  
Maria Koifman Khristosov ◽  
Shiri Dishon ◽  
Imrit Noi ◽  
Alex Katsman ◽  
Boaz Pokroy
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Single Crystals ◽  
Size Control ◽  
Nanoporous Gold ◽  
Ligament Size

Thermal stability and mechanical properties investigation of nanoporous gold single crystals.

Size control of SSZ-13 crystals with APAM and its influence on the coking behaviour during MTO reaction

2019 ◽  
Vol 9 (11) ◽  
pp. 2888-2897 ◽  
Author(s):  
Zhiqiang Xu ◽  
Jianwen Li ◽  
Yuxuan Huang ◽  
Hongfang Ma ◽  
Weixin Qian ◽  
...  
Keyword(s):  
Crystal Size ◽  
Size Control ◽  
Size Reduction ◽  
Mto Reaction

Crystal size reduction of SSZ-13 with APAM activates more naphthalene in the CHA cages.

SSZ-13 Crystallization by Particle Attachment and Deterministic Pathways to Crystal Size Control

2015 ◽  
Vol 137 (40) ◽  
pp. 13007-13017 ◽  
Author(s):  
Manjesh Kumar ◽  
Helen Luo ◽  
Yuriy Román-Leshkov ◽  
Jeffrey D. Rimer
Keyword(s):  
Crystal Size ◽  
Size Control ◽  
Particle Attachment

scholarly journals Size control and vacuum-ultraviolet fluorescence of nanosized KMgF3 single crystals prepared using femtosecond laser pulses

2016 ◽  
Vol 17 (1) ◽  
pp. 685-690
Author(s):  
Sotaro Muramatsu ◽  
Masahiro Yanagihara ◽  
Toru Asaka ◽  
Shingo Ono ◽  
Tomohito Nagami ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Single Crystals ◽  
Vacuum Ultraviolet ◽  
Size Control ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

Mass–count plots for crystal size control

2015 ◽  
Vol 137 ◽  
pp. 338-351 ◽  
Author(s):  
Daniel J. Griffin ◽  
Martha A. Grover ◽  
Yoshiaki Kawajiri ◽  
Ronald W. Rousseau
Keyword(s):  
Crystal Size ◽  
Size Control
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