Color Digital Holographic High Quality Reconstruction of Large Size Object

2011 ◽  
Vol 40 (9) ◽  
pp. 1409-1412
Author(s):  
桂进斌 UI Jin-bin ◽  
李俊昌 LI Jun-chang ◽  
宋庆和 SONG Qing-he ◽  
楼宇丽 LOU Yu-li
Keyword(s):  
High Quality ◽  
Large Size

scholarly journals Flux Method Growth of Large Size Group IV–V 2D GeP Single Crystals and Photoresponse Application

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 235
Author(s):  
Shuqi Zhao ◽  
Tongtong Yu ◽  
Ziming Wang ◽  
Shilei Wang ◽  
Limei Wei ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystals ◽  
High Performance ◽  
Group Iv ◽  
X Ray Diffraction ◽  
High Quality ◽  
Practical Applications ◽  
Large Size ◽  
Growth Method ◽  
Polarized Raman

Two-dimensional (2D) materials driven by their unique electronic and optoelectronic properties have opened up possibilities for their various applications. The large and high-quality single crystals are essential to fabricate high-performance 2D devices for practical applications. Herein, IV-V 2D GeP single crystals with high-quality and large size of 20 × 15 × 5 mm3 were successfully grown by the Bi flux growth method. The crystalline quality of GeP was confirmed by high-resolution X-ray diffraction (HRXRD), Laue diffraction, electron probe microanalysis (EPMA) and Raman spectroscopy. Additionally, intrinsic anisotropic optical properties were investigated by angle-resolved polarized Raman spectroscopy (ARPRS) and transmission spectra in detail. Furthermore, we fabricated high-performance photodetectors based on GeP, presenting a relatively large photocurrent over 3 mA. More generally, our results will significantly contribute the GeP crystal to the wide optoelectronic applications.

scholarly journals The Transformation from (111) to (100): A Routine to Large-Scale Epitaxial Diamond

2020 ◽  
Author(s):  
Yang Wang ◽  
Weihua Wang ◽  
Shilin Yang ◽  
Jiaqi Zhu
Keyword(s):  
Large Scale ◽  
Diamond Films ◽  
Diamond Growth ◽  
Nucleation Density ◽  
Diamond Synthesis ◽  
First Principle ◽  
High Quality ◽  
First Principle Calculations ◽  
Large Size ◽  
Experimental Researches

Diamond is a material with excellent performances which attracts the attention from researchers for decades. Pt (111), owing to its catalytic activity on diamond synthesis, is regarded to be a candidate for diamond hetero-epitaxity, which can enhance nucleation density. Molten surface at diamond growth temperature can also improve mobility and aggregation capability of primitive nuclei. Generally, (100)-oriented is welcomed for the achivement of high quality and large size diamond, since the formation of defects and twins are prevented. First-principle calculations and experimental researches were carried out for the study of transformation of orientation. The transformation from {111} to {100}-oriented diamond has been observed on Pt (111) substrate, which can be promoted by the increase of carbon source concentration and substrate temperature. The process is energetic favorable, which may provides a way towards large-scale (100) diamond films.

scholarly journals Improved Reference Genome for Cyclotella Cryptica CCMP332, a Model for Cell Wall Morphogenesis, Salinity Adaptation, and Lipid Production in Diatoms (Bacillariophyta)

2020 ◽  
Author(s):  
Wade R. Roberts ◽  
Kala M. Downey ◽  
Elizabeth C. Ruck ◽  
Jesse C. Traller ◽  
Andrew J. Alverson
Keyword(s):  
Reference Genome ◽  
Lipid Production ◽  
Fold Increase ◽  
High Quality ◽  
Short Read Sequencing ◽  
Large Size ◽  
Reference Genome Assembly ◽  
Cell Wall Morphogenesis ◽  
Cyclotella Cryptica

ABSTRACTThe diatom, Cyclotella cryptica, is a well-established experimental model for physiological studies and, more recently, biotechnology applications of diatoms. To further facilitate its use as a model diatom species, we report an improved reference genome assembly and annotation for C. cryptica strain CCMP332. We used a combination of long- and short-read sequencing to assemble a high-quality and contaminant-free genome. The genome is 171 Mb in size and consists of 662 scaffolds with a scaffold N50 of 494 kb. This represents a 176-fold decrease in scaffold number and 41-fold increase in scaffold N50 compared to the previous assembly. The genome contains 21,250 predicted genes, 75% of which were assigned putative functions. Repetitive DNA comprises 59% of the genome, and an improved classification of repetitive elements indicated that a historically steady accumulation of transposable elements has contributed to the relatively large size of the C. cryptica genome. The high-quality C. cryptica genome will serve as a valuable reference for ecological, genetic, and biotechnology studies of diatoms.Data available fromNCBI BioProjects PRJNA628076 and PRJNA589195

Controllable Synthesis of High Quality Monolayer WS2 with Large Size on Sapphire Substrate by Chemical Vapor Deposition

2016 ◽  
Vol 37 (8) ◽  
pp. 984-989
Author(s):  
巩 哲 GONG Zhe ◽  
何大伟 HE Da-wei ◽  
王永生 WANG Yong-sheng ◽  
许海腾 XU Hai-teng ◽  
董艳芳 DONG Yan-fang
Keyword(s):  
Chemical Vapor Deposition ◽  
Sapphire Substrate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Controllable Synthesis ◽  
High Quality ◽  
Large Size

Bulk growth and an efficient mid-IR laser of high-quality Er:YSGG crystals

CrystEngComm ◽  
2019 ◽  
Vol 21 (12) ◽  
pp. 1928-1933 ◽  
Author(s):  
Qiangqiang Hu ◽  
Hongkun Nie ◽  
Wenxiang Mu ◽  
Yanru Yin ◽  
Jian Zhang ◽  
...  
Keyword(s):  
High Quality ◽  
Bulk Growth ◽  
Highly Efficient ◽  
Large Size ◽  
Ir Laser

This work reports on the growth of the high quality large size Er:YSGG crystals and their highly efficient 2.8 nm laser.

scholarly journals Simulation and Experiment for Growth of High-Quality and Large-Size AlN Seed Crystals by Spontaneous Nucleation

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3939
Author(s):  
Zuoyan Qin ◽  
Wenhao Chen ◽  
Danxia Deng ◽  
Zhenhua Sun ◽  
Baikui Li ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Single Crystal ◽  
Growth Surface ◽  
Inversion Method ◽  
High Quality ◽  
Radial Temperature ◽  
Heater Power ◽  
Seed Crystals ◽  
Spontaneous Nucleation ◽  
Large Size

Seed crystals are the prerequisite for the growth of high quality and large size aluminum nitride (AlN) single crystal boules. The physical vapor transport (PVT) method is adopted to grow AlN seed crystal. However, this method is not available in nature. Herein, the temperature field distribution in the PVT furnace was simulated using the numerical analysis method to obtain free-standing and large-size seeds. The theoretical studies indicate that the temperature distribution in the crucible is related to the crucible height. According to the theory of growth dynamics and growth surface dynamics, the optimal thermal distribution was achieved through the design of a specific crucible structure, which is determined by the ratio of top-heater power to main-heater power. Moreover, in our experiment, a sole AlN single crystal seed with a length of 12 mm was obtained on the tungsten (W) substrate. The low axial temperature gradient between material source and substrate can decrease the nucleation rate and growth rate, and the high radial temperature gradient of the substrate can promote the expansion of crystal size. Additionally, the crystallinity of the crystals grown under different thermal field conditions are analyzed and compared. The Raman results manifest the superiority of the thermal inversion method in the growth of high quality AlN single crystal.

Development of Large High-Quality Chalcopyrite Single Crystals for Nonlinear Optical Applications

1999 ◽  
Vol 607 ◽  
Author(s):  
W. Ruderman ◽  
I. Zwieback
Keyword(s):  
Single Crystals ◽  
Nonlinear Optical ◽  
Optical Quality ◽  
High Quality ◽  
Large Size ◽  
Laser Sources ◽  
Infrared Laser Sources ◽  
Optical Applications ◽  
Nonlinear Optical Applications ◽  
Made In

AbstractStriking progress has been made in the development of thigh optical quality, large size and low absorbing single crystals of ZnGeP2, AgGaS2 and CdGeAs2. This will now enable continuously tunable infrared laser sources to be built covering the spectral region from 3.9 to 11 µm.

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