Search

Your search keyword '"Zhao, Shuhao"' showing total 33 results
Start Over Author "Zhao, Shuhao"
33 results on '"Zhao, Shuhao"'

17. High-performance broadband flexible photodetector based on Gd3Fe5O12-assisted double van der Waals heterojunctions.

Author

Zhang, Ze, Ji, Peirui, Li, Shaobo, Wang, Fei, He, Shengmei, Cheng, Yiwei, Zhao, Shuhao, Li, Kaili, Wang, Xiaomin, Wang, Yu, and Yang, Shuming

Subjects
PHOTODETECTORS, MOLYBDENUM disulfide, MOLYBDENUM sulfides, HETEROJUNCTIONS, GARNET, CARBON nanotubes, ENVIRONMENTAL monitoring, IRON
Abstract

Flexible photodetectors are fundamental components for developing wearable systems, which can be widely used for medical detection, environmental monitoring and flexible imaging. However, compared with 3D materials, low-dimensional materials have degraded performance, a key challenge for current flexible photodetectors. Here, a high-performance broadband photodetector has been proposed and fabricated. By combining the high mobility of graphene (Gr) with the strong light–matter interactions of single-walled carbon nanotubes (SWCNTs) and molybdenum disulfide (MoS2), the flexible photodetector exhibits a greatly improved photoresponse covering the visible to near-infrared range. Additionally, a thin layer of gadolinium iron garnet (Gd3Fe5O12, GdlG) film is introduced to improve the interface of the double van der Waals heterojunctions to reduce the dark current. The SWCNT/GdIG/Gr/GdIG/MoS2 flexible photodetector exhibits a high photoresponsivity of 47.375 A/W and a high detectivity of 1.952 × 1012 Jones at 450 nm, a high photoresponsivity of 109.311 A/W and a high detectivity of 4.504 × 1012 Jones at 1080 nm, and good mechanical stability at room temperature. This work demonstrates the good capacity of GdIG-assisted double van der Waals heterojunctions on flexible substrates and provides a new solution for constructing high-performance flexible photodetectors. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

32. Method of imaging and evaluation for defect based on pulsed eddy current

Author

Hou Dibo, Zhang Guangxin, Zhao Shuhao, Huang Pingjie, Luo Xuwei, and Peng Xiedan

Subjects
010302 applied physics, Engineering, business.industry, 02 engineering and technology, 01 natural sciences, law.invention, 020303 mechanical engineering & transports, Operator (computer programming), 0203 mechanical engineering, law, 0103 physical sciences, Evaluation methods, Eddy current, Computer vision, Artificial intelligence, business
Abstract

As a non-destructive testing method, pulsed eddy current has certain advantages in hidden defect detection problems. A C-Scan imaging method based on LabVIEW is proposed in this paper and defect evaluation is carried out. In defect evaluation, a profile detection algorithm based on Canny operator is applied. The characterization of depth and shape of defects is studied. Experimental results show that defects can be detected and displayed by using the imaging and evaluation method presented in the paper. In contrast to the normal threshold method, the algorithm based on Canny operator can extract the profile of defects more accurately which will be an advantage for hidden defect inspection.

Published
2016

33. Smartphone-Based Droplet Digital LAMP Device with Rapid Nucleic Acid Isolation for Highly Sensitive Point-of-Care Detection

Author

Hu, Fei, Li, Juan, Zhang, Zengming, Li, Ming, Zhao, Shuhao, Li, Zhipeng, and Peng, Niancai

Abstract

While advances in microfluidics have enabled rapid and highly integrated detection of nucleic acid targets, the detection sensitivity is still unsatisfactory in the current POC (point-of-care) detection systems, especially for low abundance samples. In this study, a chip that integrates rapid nucleic acid extraction based on IFAST (immiscible phase filtration assisted by surface tension) and digital isothermal detection was developed to achieve highly sensitive POC detection within 60 min. Based on the interface theory, the factors influencing the interface stability of the IFAST process were studied, and the IFAST nucleic acid extraction conditions were optimized to increase the nucleic acid extraction recovery rate to 75%. Spiral mixing channel and flow-focusing droplet generation structure were designed to achieve the mixing and sample partitioning by applying negative pressure. A portable microdroplet fluorescence detection device was developed based on smartphone imaging. Validation tests were carried out for quantification of low-abundance cfDNA and detection of mutations.

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results