Review
Chemistry, Analytical
Sheng Yan, Dan Yuan
Summary: The development of microfluidic technologies, particularly microflow cytometry with 3D focusing capabilities, has shown great promise in single-cell analysis, offering a wide range of applications in biology and medicine.
Article
Engineering, Chemical
A. de Hemptinne, P. Gelin, I. Ziemecka, W. De Malsche
Summary: In this study, a microfluidic chip was developed to assemble multiple layers on magnetic particles using magnetic fields. The chip design allows for three parallel liquid streams, with two reactant solutions separated by a washing solution. By utilizing the magnetic field, particles are carried by the flow and diverted in a perpendicular direction to switch between liquid streams, allowing for the adsorption of a layer during each passage. The use of walls between streams minimizes liquid diffusion and enables the placement of multiple chip units in series to increase the number of coated layers.
Article
Energy & Fuels
Zheyu Liu, Maojie Chai, Xin Chen, Seyed Hossein Hejazi, Yiqiang Li
Summary: Experimental investigation of flow regimes in a rectangular micmchannel using a water-oil system revealed four distinct flow regimes based on parameters such as viscosity ratios, velocity ratios, and capillary numbers. An exponential correlation was found between viscosity ratio and velocity ratio in transitioning flow regimes, with different effects on droplet size and slug length.
Article
Nanoscience & Nanotechnology
Chun-Dong Xue, Jia-Ming Zhao, Zhong-Ping Sun, Jing-Tong Na, Yong-Jiang Li, Kai-Rong Qin
Summary: This study proposes a novel strategy for microfluidic focusing of microparticles based on negative magnetophoresis and oscillatory flow. A simulation model is developed to calculate particle motion and analyze the non-monotonic size dependence of particle focusing. The effects of oscillatory flow field and magnetic field on particle focusing are quantitatively investigated. The proposed strategy can guide real applications such as the enrichment and separation of sensitive biological particles.
MICROFLUIDICS AND NANOFLUIDICS
(2021)
Article
Biochemical Research Methods
Chenchen Zhou, Shuaishuai Liang, Yongjian Li, Haosheng Chen, Jiang Li
Summary: The study presents a facile approach to shaping sharp-edged 3D microparticles through combining a folded PDMS channel and orthogonal projection lithography, demonstrating their potential applications.
Article
Engineering, Chemical
Ali Amani, Amir Shamloo, Pouyan Vatani, Sina Ebrahimi
Summary: Microfluidic experiments have been widely used in medical sciences and engineering, and this study investigated the focusing and separation of particles with different sizes and densities using inertial microfluidic devices. The simulation results showed that the divergent geometry had better performance in separating and focusing particles compared to the convergent geometry.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Analytical
Mengren Wu, Yuan Gao, Amirreza Ghaznavi, Weiqi Zhao, Jie Xu
Summary: Efficient mixing of fluids is crucial for various biomedical and biochemical applications in lab-on-a-chip devices. This study explores electroosmosis micromixing in a lab-on-a-foil microfluidic device, achieving efficient micromixing using tooth-shaped planar electrodes. The study evaluates the mixing performance through intensity measurement and investigates the effects of frequency, flow rate, voltage amplitude, and number of electrode tooth pairs. The research demonstrates the potential for optimizing mixing performance in EOF-based micromixers and the fabrication of low-cost flexible electric microfluidic devices.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Chemical
Wei Yu, Bo Li, Xiangdong Liu, Yongping Chen
Summary: A numerical research investigated the generation of triple emulsion droplets in a three-dimensional axisymmetric flow-focusing device. The study identified three flow regimes: dripping, jetting, and threading. The effects of operation conditions, such as flow rate and interfacial tension, on droplet generation were clarified, with viscosity also playing a significant role.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Biochemical Research Methods
Feipeng Yang, Alanis Carmona, Katerina Stojkova, Eric Ivan Garcia Huitron, Anna Goddi, Abhinav Bhushan, Ronald N. Cohen, Eric M. Brey
Summary: A microfluidic system was developed to engineer a 3D human adipose microtissue, showing characteristics of adipose tissue and supported by interstitial flow. This system has the potential to serve as a platform for in vitro drug testing for adipose tissue-related diseases.
Article
Mechanics
Mostafa Soroor, Mohammad Zabetian Targhi, Seyed Ali Tabatabaei
Summary: In this study, a flow focusing droplet generator was designed using numerical simulation, and the numerical method was verified according to previous research. The study found that the deviation of simulations from experiments was small, which is helpful in choosing the optimal flow regime to increase droplet generation frequency and monodispersity.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2021)
Article
Biochemical Research Methods
Xiaokang Deng, Yukun Ren, Likai Hou, Tianyi Jiang, Hongyuan Jiang
Summary: Anisotropic microparticles with various shapes were continuously prepared using a simple strategy that involved deforming oil-droplet templates within microfibers and locking their shapes via thermo/photo-polymerization. The size and geometry of the oil-droplet templates were precisely controlled by altering fluid flow conditions. Functionalized rod-like microparticles exhibited superior performance in removing contaminants compared to spherical microparticles, as they had a larger specific surface area for improved contact between catalysts and pollutants. Additionally, the magnetic rod-like microparticles could be easily recovered and reused without compromising their catalytic efficiency.
Article
Chemistry, Analytical
Y. Alvarez-Brana, J. Etxebarria-Elezgarai, L. Ruiz de Larrinaga-Vicente, F. Benito-Lopez, L. Basabe-Desmonts
Summary: In order to facilitate the implementation of self-powered microfluidics, modular micropumps created through 3D printing have been developed. These micropumps have tunable and programmable characteristics, making them easily assemblable with microfluidic devices. A self-powered colorimetric test demonstrated the innovative potential of 3D printed micropumps in the field of self-powered microfluidics.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Mechanics
Somasekhara Goud Sontti, Arnab Atta
Summary: We developed a computational fluid dynamics model based on the coupling of the level set and volume of fluid methods to study droplet formation in a square flow-focusing microchannel. By modifying the microchannel with a constricted orifice, we were able to manipulate droplet formation and flow regimes. We investigated the effects of geometrical confinement, flow rate, and interfacial tension on droplet characteristics and identified squeezing, dripping, and jetting as the three flow regimes observed.
Article
Nanoscience & Nanotechnology
Xiaofei Yuan, Andrew Glidle, Hitoshi Furusho, Huabing Yin
Summary: Traditional two-dimensional fluid control strategies in microfluidic cell sorting have limitations in terms of precision and purity, while devices based on three-dimensional hydrodynamics offer better flow-focusing characteristics but are restricted by arbitrary sample positioning. The 3D hydrodynamic focusing sorting platform designed in this study has advantages in precisely controlling sample velocity and position, showing potential for high-accuracy Raman activated sorting.
MICROFLUIDICS AND NANOFLUIDICS
(2021)
Article
Chemistry, Analytical
Nikita A. Filatov, Anatoly A. Evstrapov, Anton S. Bukatin
Summary: Droplet microfluidics is a powerful tool for various applications, with the ability to generate monodisperse droplets using flow-focusing microfluidic devices and the option to adjust negative pressure in different ways. The electro-pneumatic regulator is preferred for precise pressure control.
Article
Chemistry, Analytical
Kailiang Zhang, Yukun Ren, Ye Tao, Xiaokang Deng, Weiyu Liu, Tianyi Jiang, Hongyuan Jiang
ANALYTICA CHIMICA ACTA
(2020)
Article
Engineering, Electrical & Electronic
Yukun Ren, Rui Xue, Weiyu Liu, Ye Tao, Fubing Bao
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2020)
Article
Chemistry, Analytical
Weiyu Liu, Yukun Ren, Ye Tao, Hui Yan, Congda Xiao, Qisheng Wu
Article
Chemistry, Analytical
Weiyu Liu, Yongjun Sun, Hui Yan, Yukun Ren, Chunlei Song, Qisheng Wu
Article
Chemistry, Multidisciplinary
Rui Xue, Weiyu Liu, Tianyi Jiang, Chunlei Song, Hongyuan Jiang, Yukun Ren
ADVANCED MATERIALS INTERFACES
(2020)
Article
Chemistry, Physical
Likai Hou, Yukun Ren, Weiyu Liu, Xiaokang Deng, Xiaoming Chen, Tianyi Jiang, Gaohui Wu, Hongyuan Jiang
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Biochemical Research Methods
Weiyu Liu, Ye Tao, Rui Xue, Chunlei Song, Qisheng Wu, Yukun Ren
Summary: This study presents an efficient microfluidic approach for continuous transport and localized collection of nanoparticles via hybrid electrokinetics. By combining linear and nonlinear electrokinetics driven by a composite DC-biased AC signal, nanoparticles can be continuously transported and trapped selectively onto metal strips, allowing for localized analyte enrichment. The proposed technique has potential applications in flexible electrokinetic frameworks for continuous-flow analyte manipulation in modern microfluidic systems.
Article
Engineering, Chemical
Haizhen Sun, Yukun Ren, Ye Tao, Tianyi Jiang, Hongyuan Jiang
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Analytical
Zhenyou Ge, Hui Yan, Weiyu Liu, Chunlei Song, Rui Xue, Yukun Ren
Article
Materials Science, Multidisciplinary
Xiaoming Chen, Yukun Ren, Tianyi Jiang, Likai Hou, Hongyuan Jiang
APPLIED MATERIALS TODAY
(2020)
Article
Chemistry, Analytical
Xiaoming Chen, Yukun Ren, Tianyi Jiang, Likai Hou, Hongyuan Jiang
Summary: A practical device based on induced-charge electroosmotic (ICED) vortices has been developed for high-resolution separation of rich-lipid microalgae, showcasing strong potential in microorganism separation and extraction. This technology demonstrates clear separation and high resolution in nanoparticle manipulation, with applications extending to various fields such as energy security, environmental monitoring, and disease diagnosis.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Kailiang Zhang, Yukun Ren, Meiying Zhao, Tianyi Jiang, Likai Hou, Hongyuan Jiang
Summary: The study introduces a method for manipulating microswimmers using thermal buoyancy-capillary convection in multiple microfluidic systems. By adjusting the voltage applied on microheaters, the direction and velocity of granular samples in liquid buffer can be flexibly controlled, which is applicable to various applications such as cargo delivery and sensing.
ANALYTICAL CHEMISTRY
(2021)
Article
Biochemical Research Methods
Weiyu Liu, Ye Tao, Zhenyou Ge, Jian Zhou, Ruibo Xu, Yukun Ren
Summary: Liquid metal (LM) combines the advantages of solid conductors and rheological fluids, providing new opportunities in the construction of flexible microelectronic and fluidic devices. Continuous electrowetting (CEW) is used to manipulate LM droplets in a buffer medium by driving bipolar counterions to reduce the surface tension at the LM/electrolyte interface. Through this mechanism, LM can induce unidirectional pumping of electrolytes and translate within a device channel, showing potential in the design of smart electrokinetic frameworks.
Article
Chemistry, Analytical
Tianyi Jiang, Yankai Jia, Haizhen Sun, Xiaokang Deng, Dewei Tang, Yukun Ren
Article
Biochemical Research Methods
Hao Wu, Yukun Ren, Likai Hou, Tianyi Jiang, Hongyuan Jiang