scholarly journals Preparation and Characterization of Crystalline Silicon by Electrochemical Liquid–Liquid–Solid Crystal Growth in Ionic Liquid

ACS Omega ◽  
2021 ◽  
Author(s):  
Zhanxia Zhao ◽  
Cheng Yang ◽  
Liang Wu ◽  
Chenglong Zhang ◽  
Ruixue Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Crystal Growth ◽  
Crystalline Silicon ◽  
Solid Crystal

Crystal Growth and Characterization of Nonilinear Optical Crystal CsB3O5

2000 ◽  
Vol 120 (7) ◽  
pp. 906-909
Author(s):  
Yoshio Kagebayashi ◽  
Yusuke Mori ◽  
Takatomo Sasaki
Keyword(s):  
Crystal Growth ◽  
Optical Crystal

Analysis of an Anomalous CMOS Transistor Exhibiting Drain to Source Leakage—Its Model and Cause

2014 ◽  
Author(s):  
Yuk L. Tsang ◽  
Alex VanVianen ◽  
Xiang D. Wang ◽  
N. David Theodore
Keyword(s):  
Threshold Voltage ◽  
Crystalline Silicon ◽  
Electrical Characterization ◽  
Visual Defect ◽  
Scanning Capacitance Microscopy ◽  
Device Model ◽  
Graphical Simulation ◽  
Cmos Transistor

Abstract In this paper, we report a device model that has successfully described the characteristics of an anomalous CMOS NFET and led to the identification of a non-visual defect. The model was based on detailed electrical characterization of a transistor exhibiting a threshold voltage (Vt) of about 120mv lower than normal and also exhibiting source to drain leakage. Using a simple graphical simulation, we predicted that the anomalous device was a transistor in parallel with a resistor. It was proposed that the resistor was due to a counter doping defect. This was confirmed using Scanning Capacitance Microscopy (SCM). The dopant defect was shown by TEM imaging to be caused by a crystalline silicon dislocation.

Crystal Growth and Electro-optical Characterization of In2Se2.7Sb0.3 Compound

2020 ◽  
Vol 12 (4) ◽  
pp. 04022-1-04022-4
Author(s):  
Piyush Patel ◽  
◽  
S. M. Vyas ◽  
Vimal Patel ◽  
Himanshu Pavagadhi ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Optical Characterization

Synthesis and Characterization of a Novel Ionic Liquid Based on N,N,N,N-tetramethylethylenediamine and its Application in the Synthesis of 1,8-dioxo-octahydro Xanthenes

2018 ◽  
Vol 21 (7) ◽  
pp. 526-532 ◽  
Author(s):  
Zahra Abdi Piralghar ◽  
Mohammad Mahmoodi Hashemi ◽  
Ali Ezabadi
Keyword(s):  
Ionic Liquid ◽  
Chlorosulfonic Acid ◽  
Solvent Free ◽  
Aryl Aldehydes ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Solvent Free Conditions ◽  
Aryl Aldehyde ◽  
High Yields

Aim and Objective: In this work, we synthesized and characterized a novel Brönsted acidic ionic liquid from the reaction of N, N, N’, N’-tetramethylethylenediamine with chlorosulfonic acid and explored its catalytic activity in 1, 8-dioxo-octahydroxanthenes synthesis. Materials and Methods: Dimedone, aryl aldehydes, and the ionic liquid as the catalyst were reacted under solvent-free conditions. The progressive of the reaction was monitored by a thin layer of chromatography (ethyl acetate/n-hexane = 1/5). All products were characterized as the basis of their spectra data and melting point by comparison with those reported in the literature. Results: The prepared ionic liquid was successfully applied in the synthesis of 1, 8-dioxooctahydroxanthenes in good to high yields on the reaction of aryl aldehyde and dimedone at 120oC under solvent-free conditions. Conclusion: This research demonstrates that the catalyst is impressive for 1, 8-dioxo-octahydroxanthenes synthesis under solvent-free conditions.

Characterization of a Soft Pressure Sensor on the Basis of Ionic Liquid Concentration and Thickness of the Piezoresistive Layer

2019 ◽  
Vol 19 (15) ◽  
pp. 6076-6084 ◽  
Author(s):  
Md. Omar Faruk Emon ◽  
Jeongwoo Lee ◽  
U Hyeok Choi ◽  
Da-Hye Kim ◽  
Kyung-Chang Lee ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Pressure Sensor ◽  
Liquid Concentration ◽  
Ionic Liquid Concentration

Sector growth and symmetry of (F,OH) apatite from the Asio mine, Japan

1994 ◽  
Vol 58 (391) ◽  
pp. 307-314 ◽  
Author(s):  
Mizuhiko Akizuki ◽  
Hirotugu Nisidoh ◽  
Yasuhiro Kudoh ◽  
Tomohiro Watanabe ◽  
Kazuo Kurata
Keyword(s):  
Optical Properties ◽  
Crystal Growth ◽  
Electron Diffraction ◽  
Chemical Analysis ◽  
Growth Surface ◽  
Complete Disappearance ◽  
X Ray ◽  
Solid Crystal ◽  
Wet Chemical ◽  
Growth Features

AbstractA study of apatite crystals from the Asio mine, Japan, showed sectoral texture related to the growth of the crystal, and with optically biaxial properties within the sectors. Wet chemical analysis gave a composition Ca5(PO4)3(F0.64,OH0.38,Cl0.01)1.03 for the specimen.Additional diffraction spots were not observed in precession and oscillation X-ray photographs and electron diffraction photographs. Since the internal textures correlate with the surface growth features, it is suggested that the internal textures and the unusual optical properties were produced during nonequilibrium crystal growth. The fluorine/hydroxyl sites in hexagonal apatite are symmetrically equivalent in the solid crystal but, at a growth surface, this equivalence may be lost, resulting in a reduction of crystal symmetry. Heating of the apatite to about 850°C results in the almost complete disappearance of the optical anomalies due to disordering, which may be related to the loss of hydroxyl from the crystal.

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