Article
Chemistry, Analytical
Yusufu Aishan, Yaxiaer Yalikun, Yigang Shen, Yapeng Yuan, Satoshi Amaya, Takashi Okutaki, Atsuhito Osaki, Shingo Maeda, Yo Tanaka
Summary: The study demonstrated a self-driven chemical micropump powered by self-oscillating motions of synthetic polymer gel. The gel oscillations induce large volume changes, which are effectively utilized through gel bars as drivers to control the pumping flow. This gel-based micropump features self-oscillating property, easy refueling, good thermal controllability, and can be used for wearable or medical devices.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Engineering, Electrical & Electronic
Arkaprava Datta, Shatavisha Biswas, Riddhiman Dhar, Tarun Kanti Bhattacharyya
Summary: The increasing prevalence of diabetes has led to the development of more convenient, comfortable, and accurate insulin delivery products. This study presents an integrated insulin delivery device consisting of a valveless piezoelectric-driven micropump, a hollow microneedle array, and a fluid reservoir. The micropump, fabricated using 3D printing technology, utilizes a piezoelectric disc for driving and employs nozzle/diffuser elements instead of active valves to prevent leakage and other complexities. Experimental results demonstrate that this tunable device can achieve a maximum flow rate of 120.5 μl min(-1) for insulin at 60Vpp, 400 Hz sine wave.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Dian-Bin Hu, Li-Peng He, Zheng Zhang, Ya-Mei Liu, Li-Na Cui, Guang-Ming Cheng
Summary: This study proposes a valveless piezoelectric pump with an inner triangle structure to reduce backflow. Theoretical modeling and finite element analysis are used to analyze the efficiency and flow resistance of the pump, and experimental results show optimal performance under specific conditions.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2022)
Article
Thermodynamics
Yiwen Fan, Xinfeng Zhang, Linyi Xiang, Yanhua Cheng, Xiaobing Luo
Summary: Due to high heat flux, thermal management has become a bottleneck for high-power electronics. The existing liquid cooling systems are mostly bulky and unsuitable for miniaturized devices. In this study, a compact liquid cooling system was proposed by integrating jet impingement cooling with a piezoelectric micro-pump. The system achieved high heat removal capability and tiny volume, with a convective heat transfer coefficient of 20572 W m (-2) K-1 and an electric power consumption of 0.023 W. Simulations and experiments confirmed the effectiveness of the system, providing a promising solution for thermal management of high-power, miniaturized electronic devices.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Instruments & Instrumentation
Yi Hou, Lipeng He, Renhui Hu, Dianbin Hu, Baojun Yu, Guangming Cheng
Summary: In this paper, a piezoelectric-driven resonant unit for high-viscosity-liquid injection is presented. The unit achieves fast delivery speed with relatively high liquid viscosity through optimized chamber design and experimental validation.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Mechanics
Jie-Chao Lei, Chien-Cheng Chang, Chang-Yi Wang
Summary: In this study, an analysis of a Stokes micropump driven by rotating shafts is presented. It is found that with increasing aspect ratio a, the normalized pumping rate first increases drastically and then decreases exponentially until it becomes constant, with a critical aspect ratio identified. The steady flow driven by moving belts against the pressure gradient results in a unidirectional laminar flow in the channel.
Article
Chemistry, Analytical
Bendong Liu, Meimei Qiao, Shaohua Zhang, Jiahui Yang
Summary: This paper presents a bi-directional acoustic micropump that utilizes oscillating sharp-edge structures to drive microfluidic flow. Two groups of sharp-edge structures with different inclined angles are employed, and the microfluid flows in opposite directions when each group vibrates under the excitation of a piezoelectric transducer. The micropump demonstrates stable flow rates of up to 125 μm/s and 85 μm/s from left to right and right to left, respectively, indicating its potential for various applications.
Article
Engineering, Electrical & Electronic
Hoa Thanh Phan, Van Thanh Dau
Summary: This article presents the development of a single-axis gyroscope that uses vortex flows circulating in a confined space. The gyroscope measures the angular rate by detecting the deflection of the vortex flow using hotwire anemometry. Experimental results show that the gyroscope has a sensitivity of about 13.6 mu V/degrees/s on the z-axis. Various parameters that affect the sensor's performance are analyzed and evaluated.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Wenzui Jin, Yimin Guan, Qiushi Wang, Peng Huang, Qin Zhou, Kun Wang, Demeng Liu
Summary: In this study, an active phase-change micropump based on CMOS-MEMS technology was fabricated and analyzed theoretically and experimentally. The micropump consists of a microchannel, heater elements, an on-chip control system, and sensors. The maximum flow rate of the micropump at room temperature was found to be 22 μL/min, and long-term stable operation could be achieved through optimizing heating conditions.
Article
Nanoscience & Nanotechnology
Inwook Hwang, Hyeong Jun Kim, Seongcheol Mun, Sungryul Yun, Tae June Kang
Summary: The vibrotactile actuator driven by light energy can produce dynamic stimulations for haptic rendering on a thin-film structure, offering advantages such as rapid controllability and low power consumption.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Junyao Wang, Bowen Cui, Huan Liu, Xingyu Chen, Yunpeng Li, Rui Wang, Tianhong Lang, Hanbo Yang, Lixiang Li, Hongxu Pan, Jingran Quan, Yansong Chen, Jianxin Xu, Yahao Liu
Summary: This study presents a Tesla valve micromixer with unidirectional flow characteristics and demonstrates its higher mixing efficiency compared to traditional T-shaped planar channels through experiments.
Article
Chemistry, Inorganic & Nuclear
Yanlin Chen, Chunjiao Yu, Xiaotong Zhu, Qi Yu
Summary: Photomechanical crystals have the potential to be promising photo actuators because they can convert light energy into mechanical energy. A coordination polymer crystal has been synthesized, which can undergo [4 + 4] cycloaddition reactions with mechanical motion. The inclusion of {[ZnL2(4,4 & PRIME;-bipy)(CH3OH)(2)]}(& INFIN;) in a polymer membrane significantly enhances the actuation behavior.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Chuguo Zhang, Wei Yuan, Baofeng Zhang, Jiayi Yang, Yuexiao Hu, Lixia He, Xuejiao Zhao, Xiuhan Li, Zhong Lin Wang, Jie Wang
Summary: The floating water wave energy harvesting devices have economic advantages, and the self-adaptive rotating triboelectric nanogenerator (SR-TENG) provides a new approach for wave energy harvesting. The SR-TENG has achieved an average mass power density of 45.18 mW kg(-1) under low frequency driving conditions, which is about 10 times higher than the reference electromagnetic generator.
Article
Polymer Science
Nan Jiang, Ke-Xin Li, Wei Xie, Shu-Ran Zhang, Xin Li, Yue Hu, Yan-Hong Xu, Xing-Man Liu, Martin R. Bryce
Summary: In this study, clusters with different extents of aggregation were successfully prepared by heat-induced or light-triggered methods, and the multicolor fluorescence of a single polymeric material was controllably regulated. The luminescence behavior of the material varied with the microscopic control of the aggregation structure. This research provides a template for developing new materials for multicolor fluorescence and demonstrates the potential of PUE as a smart material through the construction of a pattern with encryption, anticounterfeiting, and information transmission functions.
Article
Multidisciplinary Sciences
Yao Shan, Shiyuan Liu, Biao Wang, Ying Hong, Chao Zhang, C. W. Lim, Guangzu Zhang, Zhengbao Yang
Summary: The authors demonstrate a gravity-driven sintering strategy for fabricating complex piezoceramics, offering potential for the production of electromechanical devices with unique geometries.
NATURE COMMUNICATIONS
(2021)
Review
Optics
Lan Jiang, An-Dong Wang, Bo Li, Tian-Hong Cui, Yong-Feng Lu
LIGHT-SCIENCE & APPLICATIONS
(2018)
Article
Engineering, Electrical & Electronic
Li Wang, Wenshuai Lu, Gaoshan Jing, Tianhong Cui
IEEE SENSORS JOURNAL
(2018)
Article
Physics, Applied
Xiangyang Wei, Yanke Peng, Gaoshan Jing, Tianhong Cui
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Zonghao Wu, Gaoshan Jing, Tianhong Cui
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2019)
Article
Engineering, Electrical & Electronic
Li Wang, Gaoshan Jing, Tianhong Cui
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2018)
Article
Engineering, Electrical & Electronic
Li Wang, Jungyoon Kim, Tianhong Cui
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2018)
Article
Optics
Baoshan Guo, Lan Jiang, Yanhong Hua, Xin Li, Tianhong Cui, Yongfeng Lu
OPTICAL ENGINEERING
(2018)
Article
Chemistry, Analytical
Rui You, Xidong Hao, Hongyan Yu, Baoxu Wang, Geyu Lu, Fangmeng Liu, Tianhong Cui
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
Rui You, Tianshuang Wang, Hongyan Yu, Jing Wang, Geyu Lu, Fangmeng Liu, Tianhong Cui
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Materials Science, Multidisciplinary
Chongqiu Yang, Yanke Peng, Terrence Simon, Tianhong Cui
MATERIALS RESEARCH EXPRESS
(2018)
Article
Thermodynamics
Taiho Yeom, Terrence Simon, Min Zhang, Youmin Yu, Tianhong Cui
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2018)
Article
Physics, Applied
Baoshan Guo, Lan Jiang, Yanhong Hua, Xin Li, Tianhong Cui, YongFeng Lu
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Rui You, Peng Li, Gaoshan Jing, Tianhong Cui
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2019)
Article
Engineering, Electrical & Electronic
Jungyoon Kim, Li Wang, Tarik Bourouina, Tianhong Cui
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2019)
Article
Engineering, Electrical & Electronic
Zonghao Wu, Tianhong Cui
IEEE SENSORS JOURNAL
(2019)
