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Dr. Dawei Shen
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Representative Publications
View All Publications21 March 2023 in Microsystems & Nanoengineering
Journal Article
ZDZihao Dong
Zihao DongQHQipei He
Qipei He
DSDawei Shen
Dawei ShenZGZheng Gong
Zheng Gong
DZDeyuan Zhang
Deyuan Zhang
YJYonggang Jiang
Yonggang Jiang +2
Polyimides are widely used in the MEMS and flexible electronics fields due to their combined physicochemical properties, including high thermal stability, mechanical strength, and chemical resistance values. In the past decade, rapid progress has been made in the microfabrication of polyimides. However, enabling technologies, such as laser-induced graphene on polyimide, photosensitive polyimide micropatterning, and 3D polyimide microstructure assembly, have not been reviewed from the perspective of polyimide microfabrication. The aims of this review are to systematically discuss polyimide microfabrication techniques, which cover film formation, material conversion, micropatterning, 3D microfabrication, and their applications. With an emphasis on polyimide-based flexible MEMS devices, we discuss the remaining technological challenges in polyimide fabrication and possible technological innovations in this field.
19 July 2022 in IEEE Sensors Journal
Journal Article
ZDZihao Dong
Zihao DongDSDawei Shen
Dawei ShenZGZheng Gong
Zheng GongDZDeyuan Zhang
Deyuan ZhangYJYonggang Jiang
Yonggang JiangA flexible flow sensor is proposed to measure the airflow velocity and incident angle. The sensor consists of a polyimide (PI) substrate, a flat cantilever beam and a graphene piezoresistor. The cantilever beam deforms under the action of fluid-structure interaction (FSI), resulting in changes in the resistance of the graphene piezoresistor. The piezoresistor was prepared by spraying coating of graphene inks using a patterned parylene mask and then encapsulated by coating another polyimide layer to form a sandwiched structure. Experimental results indicate that the flow sensor has a wide detection range of flow velocity (0-30 m/s) and incident angle (0-25°), with a high resolution of 0.94 m/s and 0.23°, respectively. Compared with curved cantilever, the flat cantilever achieves higher sensitivity to the incident angle, and smaller disturbance to the flow field. The arrangement of the flow sensors on an airfoil is discussed for estimation of flight parameters.
7 December 2021 in Journal of Bionic Engineering
Journal Article
DSDawei Shen
Dawei ShenYJYonggang Jiang
Yonggang JiangZMZhiqiang Ma
Zhiqiang Ma
PZPeng Zhao
Peng Zhao
ZGZheng Gong
Zheng Gong
DZDeyuan Zhang
Deyuan Zhang
+1
6 June 2024 in Journal of Micromechanics and Microengineering
Journal Article
Zhiqiang MADSDawei Shen
Dawei ShenIn our daily life, flexible flow sensors endow us with a ‘sixth sense’ capability, i.e. ‘touch’ the fluids, improving living quality. Although there are kinds of flexible flow sensors developed to implement this capability, they still have insufficient sensitivity and limited intelligent applications in daily life. Biomimetic engineering provides us with a powerful and effective approach to develop highly sensitive and intelligent flow sensing systems served in our life, comparable to that in creatures. Here, in this review, we present a comprehensive review of recent studies on the flexible flow sensors for human intelligent life. Firstly, we briefly introduce the excellent flow sensing systems selected by nature, and typical design strategies of artificial flexible flow sensors. Furthermore, we collect and exhibit kinds of flexible flow sensors and their applications in intelligent and digital life. Finally, we discuss the challenges and future perspectives of the flexible flow sensor for the metaverse applications.
1 December 2024 in Wearable Electronics
Journal Article
About Me
Dawei Shen, Ph.D.
Associate Researcher & Master’s Supervisor, Center for Intelligent Design of Green Civil Aircraft, Tianmu Mountain Laboratory (Zhejiang Provincial Laboratory of Aeronautics)
Dr. Shen received his Doctoral degree in Mechanical Manufacturing and Automation from Beihang University in 2022. He conducted postdoctoral research at Zhejiang University and Zhejiang Tsinghua Institute of Flexible Electronics Technology from 2022 to 2024, before joining Tianmu Mountain Laboratory in November 2024.
His primary research interests cover MEMS micro-nano sensing, airborne intelligent wind field perception for unmanned aerial vehicles (UAVs), intelligent skins, as well as multi-sensor fusion perception and control algorithms for UAVs.
He has published more than ten papers in international journals including Microsystems & Nanoengineering, Advanced Intelligent Systems, Smart Materials and Structures and Journal of Bionic Engineering, and filed eight invention patents. He presides over one independent research project supported by the State Key Laboratory of Flexible Electronics Technology of Tsinghua University and participates in multiple thematic and key projects funded by the Military Science and Technology Commission of China.
The flexible biomimetic cilia airflow sensor developed by his team has been applied to distributed flow field perception on UAV wing surfaces, and the relevant achievement was featured in a video report under Nature Portfolio (Nature journal series)