Research progress of two-dimensional semiconductor infrared photodetector (Invited)

2021 ◽  
Vol 50 (1) ◽  
pp. 20211017-20211017
Author(s):  
许航瑀 Hangyu Xu ◽  
王鹏 Peng Wang ◽  
陈效双 Xiaoshuang Chen ◽  
胡伟达 Weida Hu
Keyword(s):  
Research Progress ◽  
Two Dimensional ◽  
Infrared Photodetector

Research progress of two-dimensional semiconductor infrared photodetector (Invited)

2021 ◽  
Vol 50 (1) ◽  
pp. 20211017-20211017
Author(s):  
许航瑀 Hangyu Xu ◽  
王鹏 Peng Wang ◽  
陈效双 Xiaoshuang Chen ◽  
胡伟达 Weida Hu
Keyword(s):  
Research Progress ◽  
Two Dimensional ◽  
Infrared Photodetector

scholarly journals Research Progress of Automated Visual Surface Defect Detection for Industrial Metal Planar Materials

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5136
Author(s):  
Xiaoxin Fang ◽  
Qiwu Luo ◽  
Bingxing Zhou ◽  
Congcong Li ◽  
Lu Tian
Keyword(s):  
Defect Detection ◽  
Surface Defect ◽  
Three Dimensional ◽  
Image Features ◽  
Stereoscopic Vision ◽  
Research Progress ◽  
Inspection System ◽  
Two Dimensional ◽  
Surface Defect Detection ◽  
Planar Materials

The computer-vision-based surface defect detection of metal planar materials is a research hotspot in the field of metallurgical industry. The high standard of planar surface quality in the metal manufacturing industry requires that the performance of an automated visual inspection system and its algorithms are constantly improved. This paper attempts to present a comprehensive survey on both two-dimensional and three-dimensional surface defect detection technologies based on reviewing over 160 publications for some typical metal planar material products of steel, aluminum, copper plates and strips. According to the algorithm properties as well as the image features, the existing two-dimensional methodologies are categorized into four groups: statistical, spectral, model, and machine learning-based methods. On the basis of three-dimensional data acquisition, the three-dimensional technologies are divided into stereoscopic vision, photometric stereo, laser scanner, and structured light measurement methods. These classical algorithms and emerging methods are introduced, analyzed, and compared in this review. Finally, the remaining challenges and future research trends of visual defect detection are discussed and forecasted at an abstract level.

Electrochemical polymerization for two-dimensional conjugated polymers

2018 ◽  
Vol 6 (40) ◽  
pp. 10672-10686 ◽  
Author(s):  
Qing Zhang ◽  
Huanli Dong ◽  
Wenping Hu
Keyword(s):  
Conjugated Polymers ◽  
Electrochemical Polymerization ◽  
Research Progress ◽  
Future Research ◽  
Special Focus ◽  
Two Dimensional ◽  
Research Directions ◽  
Potential Applications ◽  
Future Research Directions ◽  
Recent Research Progress

This article places special focus on the recent research progress of the EP method in synthesizing CPs. In particular, their potential applications as 2D CPs are summarized, with a basic introduction of the EP method, its use in synthesizing CPs as well as the promising applications of the obtained CPs in different fields. Discussions of current challenges in this field and future research directions are also given.

Research progress of two-dimensional layered materials-based heterojunction photodetectors(Invited)

2021 ◽  
Vol 50 (1) ◽  
pp. 20211018-20211018
Author(s):  
陈红富 Hongfu Chen ◽  
罗曼 Man Luo ◽  
沈倪明 Niming Shen ◽  
徐腾飞 Tengfei Xu ◽  
秦嘉怡 Jiayi Qin ◽  
...  
Keyword(s):  
Layered Materials ◽  
Research Progress ◽  
Two Dimensional

scholarly journals Implementation of Atomically Thick Graphene and Its Derivatives in Electromagnetic Absorbers

2019 ◽  
Vol 9 (3) ◽  
pp. 388 ◽  
Author(s):  
Jing Tian ◽  
Hongyu Shi ◽  
Haoquan Hu ◽  
Bo Chen ◽  
Yongfang Bao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cross Section ◽  
Future Development ◽  
Research Progress ◽  
Two Dimensional ◽  
Reflected Waves ◽  
Microwave Frequencies ◽  
Reduced Graphene ◽  
Derivatives Of

To reduce the radar cross section at microwave frequencies, it is necessary to implement electromagnetic (EM) absorbing devices/materials to decrease the strength of reflected waves. In addition, EM absorbers also find their applications at higher spectrum such as THz and optical frequencies. As an atomic-thick two-dimensional (2D) material, graphene has been widely used in the development of EM devices. The conductivity of graphene can be electrostatically or chemically tuned from microwave to optical light frequencies, enabling the design of reconfigurable graphene EM absorbers. Meanwhile, the derivatives of graphene such as reduced graphene oxide (rGO) also demonstrate excellent wave absorbing properties when mixed with other materials. In this article, the research progress of graphene and its derivatives based EM absorbers are introduced and the future development of graphene EM absorbing devices are also discussed.

scholarly journals Two-Dimensional Black Phosphorus: An Emerging Anode Material for Lithium-Ion Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
JiPing Zhu ◽  
GuangShun Xiao ◽  
XiuXiu Zuo
Keyword(s):  
Energy Storage ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Black Phosphorus ◽  
Environmental Stability ◽  
Research Progress ◽  
Two Dimensional ◽  
Photoelectric Properties

AbstractTwo-dimensional black phosphorus (2D BP), an emerging material, has aroused tremendous interest once discovered. This is due to the fact that it integrates unprecedented properties of other 2D materials, such as tunable bandgap structures, outstanding electrochemical properties, anisotropic mechanical, thermodynamic, and photoelectric properties, making it of great research value in many fields. The emergence of 2D BP has greatly promoted the development of electrochemical energy storage devices, especially lithium-ion batteries. However, in the application of 2D BP, there are still some problems to be solved urgently, such as the difficulty in the synthesis of large-scale high-quality phosphorene, poor environmental stability, and the volume expansion as electrode materials. Herein, according to the latest research progress of 2D BP in the field of energy storage, we systematically summarize and compare the preparation methods of phosphorene and discuss the basic structure and properties of BP, especially the environmental instability and passivation techniques. In particular, the practical application and challenges of 2D BP as anode material for lithium-ion batteries are analyzed in detail. Finally, some personal perspectives on the future development and challenges of BP are presented.

scholarly journals Research Progress on the Preparation and Properties of Two Dimensional Structure of Ionic Liquids

2021 ◽  
Vol 79 (4) ◽  
pp. 443
Author(s):  
Yumiao Lu ◽  
Wei Chen ◽  
Yanlei Wang ◽  
Feng Huo ◽  
Yihui Dong ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Research Progress ◽  
Dimensional Structure ◽  
Two Dimensional

scholarly journals Research Progress of Two-dimensional Matrix Detectors in IMRT Dose Verification

2021 ◽  
Vol 5 (3) ◽  
Author(s):  
Yufen Shang ◽  
Yuqing Xu ◽  
Fang Wang
Keyword(s):  
Ionization Chamber ◽  
Intensity Modulated Radiation Therapy ◽  
Research Progress ◽  
Two Dimensional ◽  
Dose Verification ◽  
Medical Field ◽  
Intensity Modulated ◽  
Dimensional Matrix ◽  
Semiconductor Matrix ◽  
Matrix Detector

With the continuous development of science and technologies in China, radiotherapy technology in medical field has been very significantly developing, and intensity modulated radiation therapy (IMRT) technology has been the most widely used. This paper first introduces the components and types of two-dimensional matrix detector, two-dimensional ionization chamber matrix detector and two-dimensional semiconductor matrix detector, then analyzes the dosimetric characteristics of the two-dimensional matrix detector. In the end, the various applications of the two-dimensional matrix detector are analyzed and discussed in detail. The paper aims to promote the two-dimensional matrix detector’s development  in the field of radiotherapy in China.

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