Surface Morphology and Shape Analysis of Nonlinear Optical Crystal DAST

2011 ◽  
Vol 197-198 ◽  
pp. 306-309
Author(s):  
Fei You ◽  
Bing Teng ◽  
Lin Hua Xia ◽  
Hui Xu ◽  
De Gao Zhong ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Shape Analysis ◽  
Great Influence ◽  
Nucleation Mechanism ◽  
Two Dimensional ◽  
Crystal Shape ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal ◽  
The Relationship ◽  
Scanning Electron

DAST (4-N, N-dimethylamino-4′-N′-methyl stilbazolium tosylate) crystal has been grown by slope nucleation method (SNM) at different cooling rates (0.5°С/d and 0.1°С/d). The morphology of crystal growing surfaces was observed by scanning electron microscope (SEM) and microscope. Different growth striations were found on the growth surfaces. The arrangements of crystal ions and cooling rate have a great influence on the crystal shape. The relationship between the DAST crystal molecular structure and the crystal shape was systematically studied by analyzing the growing surface morphology. Two-dimensional nucleation mechanism was found on growing faces with increasing supersaturation.

Relationship between Splat Morphology and Property of Plasma Sprayed Alumina Coatings

2004 ◽  
Vol 449-452 ◽  
pp. 925-928 ◽  
Author(s):  
Sachio Oki
Keyword(s):  
Surface Morphology ◽  
Splat Morphology ◽  
Alumina Coatings ◽  
Spray Pattern ◽  
Coating Property ◽  
Microscope Images ◽  
Plasma Sprayed ◽  
The Relationship ◽  
Scanning Electron

New method for characterization of coating microstructures and for evaluation of coating property by means of surface morphology has been proposed. In this paper, the distribution of shape and dimensions of splat was examined using quantitative analysis of scanning electron microscope images from the surface of spray pattern as well as the surface of coating. Results obtained in this study indicate that it is necessary to analyze the spray pattern as well as the surface morphology in order to estimate the coating property by means of the distribution of splat which composes the coating. Moreover, the splats, which are in the interface between the substrate and the coating, should have the same morphology as those of the coating surface. The relationship between splat morphology and the property of coatings was discussed.

scholarly journals Joining Alumina and Sapphire by Growing Aluminium Borate Whiskers In-Situ, and the Whiskers’ Orientation Relationship with the Sapphire Substrate

Materials ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 175 ◽  
Author(s):  
Chun Li ◽  
Xiaoqing Si ◽  
Shuang Wu ◽  
Junlei Qi ◽  
Yongxian Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Orientation Relationship ◽  
Sapphire Substrate ◽  
Great Influence ◽  
The Other ◽  
Aluminium Borate ◽  
Random Growth ◽  
The Relationship ◽  
Scanning Electron

Bonding between polycrystal alumina and sapphire with (0001), (10 1 ¯ 0), (11 2 ¯ 0), (1 1 ¯ 02) orientations is successfully achieved by growing aluminium borate whiskers in the joint. The morphology of the whiskers in the joint is characterised by (Scanning Electron Microscopy) SEM. The relationship between the growing direction of the aluminium borate whiskers and the orientation of the sapphire substrate is investigated. The effect of the growing direction of the aluminium borate whiskers on the mechanical properties of the joint is discussed. The results show that the whiskers on the sapphire with (10 1 ¯ 0) orientation grow perpendicular to the surface of the substrate while the whiskers show a random growth on the other substrates. It is found that there is an orientation relationship between the whiskers (220) and sapphire (10 1 ¯ 0) and the morphology of the whiskers has great influence on the mechanical properties of the joint. The joint between polycrystal alumina and sapphire with (10 1 ¯ 0) orientation exhibits the highest strength, which reaches 26 MPa.

Etching Treatment Effect on Surface Morphology of Dental Structures

2017 ◽  
Vol 68 (11) ◽  
pp. 2700-2703 ◽  
Author(s):  
Kamel Earar ◽  
Vasile Iulian Antoniac ◽  
Sorana Baciu ◽  
Simion Bran ◽  
Florin Onisor ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Morphology ◽  
Phosphoric Acid ◽  
Human Teeth ◽  
Strong Bond ◽  
Force Microscopy ◽  
Atomic Force ◽  
Human Dentine ◽  
Dental Surface ◽  
Scanning Electron

This study examined and compared surface of human dentine after acidic etching with hydrogen peroxide, phosphoric acid liquid and gel. Surface demineralization of dentin is necessary for a strong bond of adhesive at dental surface. Split human teeth were used. After application of mentioned substances at dentin level measures of the contact angle and surface morphology were employed. Surface morphology was analyzed with the help of scanning electron microscopy and atomic force microscopy. Liquid phosphoric acid yielded highest demineralization showing better hydrophobicity than the rest, thus having more contact surface. Surface roughness are less evident and formed surface micropores of 4 �m remained open after wash and air dry providing better adhesive canalicular penetration and subsequent bond.

Isolasi Dan Karakterisasi Bentonit Alam Menjadi Nanopartikel Monmorillonit

2018 ◽  
Vol 3 (1) ◽  
pp. 12 ◽  
Author(s):  
Zaimahwati Zaimahwati ◽  
Yuniati Yuniati ◽  
Ramzi Jalal ◽  
Syahman Zhafiri ◽  
Yuli Yetri
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Particle Size ◽  
Surface Morphology ◽  
Average Diameter ◽  
Particle Size Analyzer ◽  
Ft Ir ◽  
Scanning Electron ◽  
Sedimentation Processes

<p>Pada penelitian ini telah dilakukan isolasi dan karakterisasi bentonit alam menjadi nanopartikel montmorillonit. Bentonit alam yang digunakan diambil dari desa Blangdalam, Kecamatan Nisam Kabupaten Aceh Utara.  Proses isolasi meliputi proses pelarutan dengan aquades, ultrasonic dan proses sedimentasi. Untuk mengetahui karakterisasi montmorillonit dilakukan uji FT-IR, X-RD dan uji morfologi permukaan dengan Scanning Electron Microscopy (SEM). Partikel size analyzer untuk menganalisis dan menentukan ukuran nanopartikel dari isolasi bentonit alam. Dari hasil penelitian didapat ukuran nanopartikel montmorillonit hasil isolasi dari bentonit alam diperoleh berdiameter rata-rata 82,15 nm.</p><p><em>In this research we have isolated and characterized natural bentonite into montmorillonite nanoparticles. Natural bentonite used was taken from Blangdalam village, Nisam sub-district, North Aceh district. The isolation process includes dissolving process with aquades, ultrasonic and sedimentation processes.  The characterization of montmorillonite, FT-IR, X-RD and surface morphology test by Scanning Electron Microscopy (SEM). Particle size analyzer to analyze and determine the size of nanoparticles from natural bentonite insulation. From the research results obtained the size of montmorillonite nanoparticles isolated from natural bentonite obtained an average diameter of 82.15 nm.</em></p>

Growth of a nonlinear optical crystal: cesium lithium borate

1995 ◽  
Vol 156 (3) ◽  
pp. 307-309 ◽  
Author(s):  
Yusuke Mori ◽  
Ikuo Kuroda ◽  
Satosi Nakajima ◽  
Akira Taguchi ◽  
Takatomo Sasaki ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Lithium Borate ◽  
Nonlinear Optical Crystal ◽  
Optical Crystal

Deep-ultraviolet transparent alkali metal-rare earth metal sulfate NaY(SO4)2.H2O as a nonlinear optical crystal: synthesis and characterization

CrystEngComm ◽  
2021 ◽  
Author(s):  
Chao Wu ◽  
Lin Lin ◽  
Tianhui Wu ◽  
Zhipeng Huang ◽  
Chi Zhang
Keyword(s):  
Rare Earth ◽  
Alkali Metal ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Synthesis And Characterization ◽  
Nonlinear Optical Crystal ◽  
Metal Sulfate ◽  
Deep Ultraviolet ◽  
Crystal Synthesis ◽  
Optical Crystal

A new alkali metal-rare earth metal sulfate with the formula NaY(SO4)2.H2O has been synthesized using a mild hydrothermal method. It crystallizes in the noncentrosymmetric trigonal space group P3121 (No. 152)...

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