A5101946727- Microfluidic and Capillary Electrophoresis Applications
- Microfluidic and Bio-sensing Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Structural Engineering and Vibration Analysis
- Structural Health Monitoring Techniques
- Electrowetting and Microfluidic Technologies
- Robot Manipulation and Learning
- Organic Electronics and Photovoltaics
- Tendon Structure and Treatment
- Civil and Geotechnical Engineering Research
- Sensor Technology and Measurement Systems
- 3D Printing in Biomedical Research
- Graphene and Nanomaterials Applications
- Advanced Measurement and Metrology Techniques
- Advanced Drug Delivery Systems
- Fluid Dynamics and Vibration Analysis
- Coastal and Marine Dynamics
- Ultrasound and Hyperthermia Applications
- Soft Robotics and Applications
- Hydraulic and Pneumatic Systems
- Bone Tissue Engineering Materials
- Conducting polymers and applications
- Irrigation Practices and Water Management
- Advanced MEMS and NEMS Technologies
- Industrial Automation and Control Systems
Zhengzhou University of Light Industry
2017-2025
Shanghai Sixth People's Hospital
2021-2023
Shanghai Jiao Tong University
2021-2023
Zhengzhou University
2022
Harbin Institute of Technology
2013-2017
Harbin University
2017
As the transportation network continues to prosper, Bridges, as core pillar of infrastructure, play an indispensable and vital role in grand blueprint country's development, so it is ensure structural health safe operation long Bridges. Through analysis influence vehicle-mounted excitation on bridge, bridge model established, grid division performed, boundary conditions are set up. Then applied simulate disturbance external environment a deformation cloud image obtained. The deflection under...
Herein, micromixing was utilized to achieve chemical reaction, homogenization, emulsification, and in applications of microfluidics.
An electromagnetic microvalve for pneumatic control of microfluidic devices has been designed, fabricated, and tested. The is composed two parts: a miniature actuator valve body. consists mainly thin polydimethylsiloxane (PDMS)-based elastomer, which acts as the diaphragm. diaphragm, used solid hydraulic medium, converts large contact area core into small head while maintaining stroking force. This remains closed because compressed mechanical spring force generated by actuator. On other...
This article presents a multiphysical system modeling and simulation of pneumatic microactuator, which significantly influences the performance particular microfluidic device. First, is performed by developing physical model for each its three integrated components: microchannel with microvalve, gas chamber, an elastomer membrane. done step operation whole system. The then considered throttle blind capacitor model, it used to predict response time microactuator correlating characteristics...
The emphasis of this paper lies in the fabrication a three-layer polydimethylsiloxane chip for micro liquid sample operation. In paper, microchannels with rectangular control layer cross section are fabricated based on dry-film negative photoresist mold, while rounded by positive reflow mold. relationships between temperature and time arc level mold discussed. Different ratios, curing temperatures, times used to fabricate two PDMS layers improve their toughness plasticity separately. slabs...
This article reports mixability experiments and their RGB color model analysis for a simple structured micromixer based on the pneumatic-driven membrane in multiple microreagent mixing applications. First, novel structure consisting of chamber pneumatic is designed fabricated polydimethylsiloxane (PDMS) material, which facilitates integration with microfluidic chips. Then, experiment results about efficiency are investigated. Compared conventional methods, easy intuitive. In addition,...
A compact, rapid, and portable off-chip pneumatic control valve is significant for the miniaturization integration of external systems microfluidic chips. In this work, an microvalve with a high-speed electromagnetic switch actuator polydimethylsiloxane (PDMS) material body has been designed to be easily encapsulated, simulated using MATLAB/Simulink software, tested in micromixer. Multi-physical coupling mathematical models are developed based on elastic deformation force membrane, driving...
Droplet fusion technology is a key for many droplet-based biochemical medical applications. By integrating symmetrical flow channel structure, we demonstrate an acoustics-controlled method of microdroplets using surface acoustic waves. Different kinds can be staggered and ordered in the channel, proving good arrangement effect microfluidic chip. This realize not only effective microbubbles but also different sizes without any modification. Further, investigate influence input frequency...
This work presents the control method of micro chamber air pressure via a novel electromagnetic microvalve for pneumatic microfluidic chips to improve controlling precision. The Bang-Bang, k (Proportional control) plus PWM (Pulse Width Modulation), and composite are developed pressure. Both advantages disadvantages three methods compared analyzed. Experimental results demonstrate that with method, performance can be greatly improved, fluctuation largely reduced. Our effectively steady-state...
This paper presents a fluid flow modeling and its parameter modification of the membrane microvalve, which significantly influences integrated behavior particular pneumatic microfluidic chip. Firstly, we establish model using traditional mathematical method, it is used to predict rate pneumatically-actuated PDMS microvalve. Then, degree deviation between experiment numerical calculation, micro characteristics in size are evaluated modify Finally, correlation experimental results confirms...
Laser encoders are promising positioning sensors for nanometer measurement. It is a key challenge laser to offer high accuracy while ensuring tolerance in service. In this article, we present encoder employing grating-pyramid configuration. This configuration realizes double diffraction via single retroreflector (RR), which offers the following two advantages: 1) providing high-resolution output signals due optical quadruple frequency and 2) improving alignment retroreflection of pyramid....
Abstract In order to investigate the resistance characteristics of liquid flow in microfluidic channels, mathematical models channels are established this paper. The channel samples with different parameters designed and fabricated by using soft lithography technology. effects aspect ratio α, equivalent diameter d l length/diameter / on analysed tested through experiments. This paper reveals performances provides research basis for improving optimizing structures.
A novel composite control method for actuated chamber air pressure of pneumatic microfluidic chip via a three-way electromagnetic microvalve is presented in this paper. The purpose the methods to improve controlling precision control. By using Bang-Bang (on-off) controller control, step-response time, steady-state accuracy, and fluctuations are performed with different maximum thresholds minimum thresholds. Moreover, by k (proportional ) plus PWM (Pulse-Width Modulation) carrier frequencies...
The compact, simple, and fast-reaction pneumatic microactuator is significant for the integration high efficiency of systems. In this work, structure, working principle, multiphysical model an on-chip are presented. mainly composed two parts: a polydimethylsiloxane (PDMS) thin membrane actuated chamber. air pressure in chamber drives elastic to deformation. Dynamic response mathematical models charging exhaust with variable volume established, deformation characteristics membrane, capacity...
Taking the production process requirements of pyrophyllite block as an example, which is raw material for synthetic diamond. The manipulator with internal bracing grasping and pressing assembly fragile thin-walled cylindrical inner wall parts designed, can complete assembling operation in a narrow space by combination fingers palm. In order to find general structure law suitable parts, based on introduction overall manipulator, conditions transferring stably, restrictions cylinder driving...