Microfluidics and Nanofluidics

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Chaotic oscillations of viscoelastic microtubes conveying pulsatile fluid
Microfluidics and Nanofluidics - - 2018
Mergen H. Ghayesh, Hamed Farokhi, Ali Farajpour
As the first endeavour, the influence of a pulsatile flow on the large-amplitude bifurcation behaviour of viscoelastic microtubes subject to longitudinal pretention is studied with special consideration to chaos. The viscoelastic microtube is surrounded by a nonlinear spring bed. A modified size-dependent nonlinear tube model is developed based on a combination of the couple stress theory and the ...... hiện toàn bộ
Optimization of an AC electrokinetics immunoassay lab-chip for biomedical diagnostics
Microfluidics and Nanofluidics - Tập 21 - Trang 1-11 - 2017
Kai Yang, Nazmul Islam, Shigetoshi Eda, Jie Wu
This paper describes the improvement of an immunoassay lab-chip based on AC electrokinetics (ACEK) effects. Reagent and analyte delivery, incubation and flushing are performed using AC electrothermal (ACET) micropumps, which operate by applying low-voltage AC signals over interdigitated electrode arrays on the microchannel bottom. As such, the immunoassay chip is low cost and disposable. Furthermo...... hiện toàn bộ
Numerical simulation of the collision of two microdroplets with a pseudopotential multiple-relaxation-time lattice Boltzmann model
Microfluidics and Nanofluidics - Tập 16 - Trang 329-346 - 2013
Ernesto Monaco, Gunther Brenner, Kai H. Luo
Collisions of two equally sized liquid microdroplets in gaseous phase are numerically studied by the lattice Boltzmann method (LBM). The multiphase formulation adopted is a pseudopotential model with improved treatment of the equation of state and force incorporation which is then coupled with the multiple-relaxation-time scheme. That allows a detailed investigation into microdroplet collisions ch...... hiện toàn bộ
Oligosaccharide model of the vascular endothelial glycocalyx in physiological flow
Microfluidics and Nanofluidics - Tập 22 - Trang 1-13 - 2018
Maria Pikoula, Matthew B. Tessier, Robert J. Woods, Yiannis Ventikos
Experiments have consistently revealed the pivotal role of the endothelial glycocalyx layer in vasoregulation and the layer’s contribution to mechanotransduction pathways. However, the exact mechanism by which the glycocalyx mediates fluid shear stress remains elusive. This study employs atomic-scale molecular simulations with the aim of investigating the conformational and orientation properties ...... hiện toàn bộ
Use microfluidic chips to study the effects of ultraviolet lights on human fibroblasts
Microfluidics and Nanofluidics - Tập 21 - Trang 1-11 - 2017
Chien-Hsun Huang, Hsien-San Hou, Kai-Yin Lo, Ji-Yen Cheng, Yung-Shin Sun
The ultraviolet (UV) radiation from sunlight exposure is highly related to skin damages such as photoaging and skin cancers. UVA radiation can cause altered expression of extracellular matrix proteins, and UVB is believed to be an apoptosis induction factor. In the past, many experiments have been conducted in vitro to investigate how UV lights are responsible for cell damages. However, most of th...... hiện toàn bộ
Mixing intensification by chaotic advection inside droplets for controlled nanoparticle preparation
Microfluidics and Nanofluidics - Tập 9 Số 4-5 - Trang 773-786 - 2010
Zhe Liu, Yanbin Huang, Jin Ye, Yi Cheng
Tuning of salt separation efficiency by flow rate control in microfluidic dynamic dialysis
Microfluidics and Nanofluidics - - 2019
Prameen C. Kalikavunkal, Nicolas G. Green, Maurits R.R. de Planque
Abstract Microliter-scale separation processes are important for biomedical research and point-of-care diagnostics with small-volume clinical samples. Analytical assays such as mass spectrometry and field effect sensing necessitate sample desalting, but too low a salt concentration can disrupt protein structures and biomolecular interactions. In this ...... hiện toàn bộ
Local control of magnetic objects in microfluidic channels
Microfluidics and Nanofluidics - Tập 8 - Trang 123-130 - 2009
Caroline Derec, Claire Wilhelm, Jacques Servais, Jean-Claude Bacri
The application of magnetic fields in microfluidics is of growing interest and the localisation of the applied field emerges as a key requisite for future integration with other micro-platforms. In this paper, we present a novel strategy of fabrication of an integrated microchannel, which combines the advantages of localisation of the magnetic field with simplicity of design and fabrication. The c...... hiện toàn bộ
Microfluidic paper-based analytical device (µPAD) fabricated by wax screen printing technique for the determination of nitrite and nitrate ion in water samples
Microfluidics and Nanofluidics - Tập 26 Số 3 - 2022
Tilaye Tesfaye, Ahmed Hussen
A simple projection photolithography method for low-cost rapid prototyping of microfluidic chips
Microfluidics and Nanofluidics - Tập 26 - Trang 1-7 - 2022
Stefan Ostmann, Christian J. Kähler
Presented herein is a masking method for SU8 based soft lithography which utilizes a simple optical setup using transparencies printed with a commercial standard office printer. The relatively low printing quality of the printer is partly overcome by imaging of the mask with negative magnification that utilizes relatively cheap and easily available parts. The imaging quality as well as the quality...... hiện toàn bộ
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