Nonlinear optical potassium niobate nanocrystals as harmonic markers: the role of precursors and stoichiometry in hydrothermal synthesis

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10713-10720 ◽  
Author(s):  
Zunhao Wang ◽  
Christian Kijatkin ◽  
Alexander Urban ◽  
Markus Haase ◽  
Mirco Imlau ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Nonlinear Optical ◽  
Potassium Niobate ◽  
Visible Range ◽  
Crystallite Sizes

Hydrothermal synthesis of KNbO3 leads to crystallite sizes down to 30 nm. They exhibit significant SHG-signals throughout the visible range.

The role of cations in hydrothermal synthesis of nonlinear optical sodium niobate nanocrystals

Nanoscale ◽  
2020 ◽  
Vol 12 (37) ◽  
pp. 19223-19229
Author(s):  
Nico-Dominik Kohlenbach ◽  
Christian Kijatkin ◽  
Matthias König ◽  
Markus Haase ◽  
Mirco Imlau ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Harmonic Signal ◽  
Sodium Niobate ◽  
Crucial Step ◽  
Second Harmonic Signal

Hydrothermal synthesized NaNbO3 nanoparticles exhibit a second harmonic signal compareable to KNbO3. Insertion of cations is a crucial step in hydrothermal synthesis.

scholarly journals Hydrothermal synthesis of nonlinear optical potassium niobate ceramic powder

1998 ◽  
Vol 34 (3-6) ◽  
pp. 172-176 ◽  
Author(s):  
Chung-Hsin Lu ◽  
Shih-Yen Lo ◽  
Hong-Cheu Lin
Keyword(s):  
Hydrothermal Synthesis ◽  
Nonlinear Optical ◽  
Ceramic Powder ◽  
Potassium Niobate

scholarly journals Multimodal nonlinear optical microscopy reveals critical role of kinesin-1 in cartilage development

2017 ◽  
Vol 8 (3) ◽  
pp. 1771 ◽  
Author(s):  
Sicong He ◽  
Wenqian Xue ◽  
Zhigang Duan ◽  
Qiqi Sun ◽  
Xuesong Li ◽  
...  
Keyword(s):  
Optical Microscopy ◽  
Nonlinear Optical ◽  
Critical Role ◽  
Nonlinear Optical Microscopy ◽  
Cartilage Development

ROLE OF PROCESS CONTROL AGENTS ON MILLING BEHAVIOR OF Al AND TiO2 POWDER MIXTURE TO SYNTHESIZE TiAl/Al2O3 NANO COMPOSITE

2012 ◽  
Vol 05 ◽  
pp. 638-645 ◽  
Author(s):  
S. ALAMOLHODA ◽  
S. HESHMATI-MANESH ◽  
A. ATAIE ◽  
A. BADIEI
Keyword(s):  
Process Control ◽  
Tio2 Powder ◽  
Nano Composite ◽  
Powder Mixtures ◽  
Gaussian Method ◽  
Opposite Behavior ◽  
Crystallite Sizes ◽  
The Mean ◽  
Milled Powders

In this study effect of adding various process control agents (PCAs) to powder mixtures of Al and TiO 2 which are mechanically activated so as to form TiAl - Al 2 O 3 nano-composite have been investigated. Phase constitutions and morphology of the milled powders were evaluated by XRD and SEM techniques, respectively. The mean crystallite sizes of the milled powders were calculated by Cauchy-Gaussian method. Thermal behavior of the milled powders was also studied by DTA to investigate formation of the final phases. The results showed that the mean crystallite size of the milled powders in the presence of PCAs was smaller than that of the sample milled without PCA addition. DTA traces showed that addition of PCAs retards the reduction of TiO 2 by Al . In samples milled in presence of PCA, the reductive reaction generally took place after melting of Al particles whereas the sample milled without PCA addition showed an opposite behavior. Also, in comparison with the sample milled with no PCA addition, in other samples the reductive reaction took place at relatively lower temperatures.

Role of Photoinduced Destruction of Gold Nanorods in the Formation of Nonlinear Optical Response

Optik ◽  
2021 ◽  
pp. 168352
Author(s):  
T.A. Chevychelova ◽  
A.I. Zvyagin ◽  
A.S. Perepelitsa ◽  
O.V. Ovchinnikov ◽  
M.S. Smirnov ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response

Computational and experimental investigations on electronic and optical response of oxygenated MoS2

2021 ◽  
Author(s):  
Mubashira Shakeel ◽  
M. Javed Iqbal ◽  
Mammor Iftikhar ◽  
Umer Farooq ◽  
Muhammad Tauseef Qureshi ◽  
...  
Keyword(s):  
Oxygen Content ◽  
Blue Shift ◽  
Visible Range ◽  
Experimental Investigations ◽  
Optical Parameters ◽  
First Principle ◽  
Absorption Phenomenon ◽  
Effect Of Oxygen ◽  
Optical Behavior

Abstract The current study is concerned with the first principle investigations of the oxygenated MoS2 to explore the electronic and optical properties. We consider various oxygen concentrations (MoS2, MoS1.75O0.25, MoS1.5O0.5, MoSO) for the prediction of its impact on parameters using PBE-GGA approximation. A noticeable change in parameters has been observed in the visible regime with the introduction of oxygen content in the MoS2 structure. The results of the electronic properties suggest a string role of Mo d-states, S p-states, and O p-states which, however, show variations for various O concentrations near the Fermi level. In comparison to the absorption trend of pure MoS2, the optical absorption spectra show a blue shift in the visible range. The effect of oxygen can also be seen in the experimentally prepared MoS2 thin films as the variation of optical behavior can be seen. Refractive index decreases from ~2.5 to ~2. Similarly, absorption graphs show a lack of absorption phenomenon as the oxygen content increases. The role of oxygen brings appreciable changes in the optical parameters over the different energy ranges.

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