scholarly journals Study of Lapping and Polishing Performance on Lithium Niobate Single Crystals

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4968
Author(s):  
Karim Ravilevich Muratov ◽  
Timur Rizovich Ablyaz ◽  
Evgeny Anatolevich Gashev ◽  
Sarabjeet Singh Sidhu ◽  
Evgeny Sergeevich Shlykov
Keyword(s):  
Lithium Niobate ◽  
Single Crystal ◽  
Single Crystals ◽  
Physical And Mechanical Properties ◽  
Target Surface ◽  
Lithium Niobate Single Crystal ◽  
Optical Circuit ◽  
Military Aviation ◽  
Materials Used

Recently, the range of crystal materials used in industrial microelectronics has significantly increased. Lithium niobate single crystals are most often used in integrated optics, due to the high values of optical and electro-optical coefficients. An integral-optical circuit based on a lithium niobate single crystal is a key element in the production of local high-precision fiber-optic gyroscopic devices used in civil and military aviation and marine technologies. In the process of production of an integral-optical circuit, the most labor-intensive operations are mechanical processing, such as lapping and polishing. Technological problems that arise while performing these operations are due to the physical and mechanical properties of the material, as well as target surface finish. This work shows the possibility to achieve the required surface quality of lithium niobate single crystal plates by mechanization of lapping and polishing process in this article.

scholarly journals KUALITAS PAPAN KOMPOSIT DARI LIMBAH FINIR KAYU LAPIS BERDASARKAN UKURAN PARTIKEL DAN WAKTU PENGEMPAAN DENGAN MENGGUNAKAN PEREKAT LIMBAH PLASTIK POLIPROPILENA

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Alfonsus Rodriquez ◽  
Ahmad Yani ◽  
Fathul Yusro
Keyword(s):  
Particle Size ◽  
Physical And Mechanical Properties ◽  
Particle Sizes ◽  
Hot Press ◽  
Factor B ◽  
Pressing Time ◽  
Materials Used ◽  
Absorption Thickness ◽  
Water Contents

This study aims to analyze the quality of composite boards from plywood veneers waste and polypropylene plastic waste adhesives base on particle sizes, pressing times, and both of interaction towards physical and mechanical properties also to obtain the particle sizes and pressing time properly with the result that produce the qualified standard boards of JIS A 5908-2003. This research carried out at the wood workshop, laboratory of technology and processing of woods (the faculty of forestry, university of Tanjungpura), and the laboratory of PT. Duta Pertiwi Nusantara. The materials used in this study were plywood veneers waste and polypropylene plastic by 50% : 50% comparison. The research method was utilized the completely randomized factorial design by two treatment factors. Factor A was particle sizes that consisting of 6 mesh, 8 mesh, and 10 mesh. Factor B was pressing time that consisting of 10 minutes, 15 minute, and 20 minutes. Composite boards were created by 30 x 30 x 1 size in centimetres by means the density target was 0,7 gr/cm3. The pressing was done by hot press in 180oC temperature and composite boards conditioning for 14 days. The results of this study showed that the density, water absorption, thickness, Modulus of Repture (MOR), internal bonding, holding strength of screws in the composite boards have been qualified the standard of JIS A 5908-2003. While, the water contents and Modulus of Elasticity (MOE) testing were not qualified the standard of JIS 5908-2003. The treatment that produce the optimum composite boards which quality JIS A 5908-2003 standard was on the 8 mesh particle size treatment by means of 15 minutes pressing time.Keywords: Composite Board, Particle Size, Polypropylene Plastics, Pressing Time, Veneers Waste.

Site Selectivity of Dopants in Lithium Niobate Single Crystal

2015 ◽  
Vol 4 (1) ◽  
pp. 28-31 ◽  
Author(s):  
Keyan Li ◽  
C. Kang ◽  
Dongfeng Xue
Keyword(s):  
Lithium Niobate ◽  
Single Crystal ◽  
Lithium Niobate Single Crystal ◽  
Site Selectivity

Enhancing the thermal stability of switched domains in lithium niobate single-crystal thin films

2020 ◽  
Vol 46 (7) ◽  
pp. 9192-9197 ◽  
Author(s):  
Liaoyuan Zhang ◽  
Wenping Geng ◽  
Xi Chen ◽  
Yimeng Li ◽  
Xiaojun Qiao ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Stability ◽  
Lithium Niobate ◽  
Single Crystal ◽  
Lithium Niobate Single Crystal ◽  
Thermal Stability Of

Growth and Characterization of Single Crystal Epitaxial CoGa on MBE Grown III-V Semiconductors

1988 ◽  
Vol 144 ◽  
Author(s):  
K. C. Garrison ◽  
C. J. Palmstrøm ◽  
R. A. Bartynski
Keyword(s):  
Substrate Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Structural Quality ◽  
High Quality ◽  
Auger Analysis ◽  
Post Deposition

ABSTRACTWe have demonstrated growth of high quality single crystal CoGa films on Ga1−xAlxAs. These films were fabricated in-situ by codeposition of Co and Ga on MBE grown Ga1−xAlxAs(100) surfaces. The elemental composition of the films was determined using Rutherford Backscattering (RBS) and in-situ Auger analysis. The structural quality of the films' surfaces was studied using RHEED (during deposition) and LEED (post deposition). RBS channeling was used to determine the bulk crystalline quality of these films.For ∼500 Å CoGa films grown at ∼450°C substrate temperature, channeling data showed good quality epitaxial single crystals [χmin ∼7%] with minimal dechanneling at the interface.

A novel technique to grow stoichiometric lithium niobate single crystal

2005 ◽  
Vol 275 (1-2) ◽  
pp. e895-e898 ◽  
Author(s):  
Yanqing Zheng ◽  
Erwei Shi ◽  
Zhiping Lu ◽  
Suxian Cui ◽  
Shaohua Wang ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Single Crystal ◽  
Lithium Niobate Single Crystal ◽  
Novel Technique
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