Papers:
Introducing a Digital Micropump for Driving a Droplet in a Microfluidic Channel
This paper presents a novel pumping technique which is compatible with both digital and continuous microfluidic platforms. In essence, a target droplet (referred to as the pumped droplet) is pumped by actuating the secondary droplet [...]
A novel Planetary Motion of Ferrofluid Drops in a Rotating Magnetic Field
Driven by an external rotating field, a novel phenomenon of planetary-like double rotations, such as a local self-spin of individual drops and the global revolution of the drop array, is uncovered in arrayed ferrofluid drops. [...]
On the velocity of spontaneous capillary flows in confined and open microchannels
Berthier J., Villard N., Pudda C., Boizot F., Nonglaton G., Costa G., Fontelaye C., Delapierre G., CEA-LETI, FR
In biotechnology and biology, conventional microfluidic systems using fluids moved by pumps, syringe or electric means are not the best solutions when portability and low-cost are an issue. Capillary-based systems fulfill the requirements for POC [...]
Cell Detection and Discrimination by a Microfluidic-Integrated Broadband Microchamber
Denzi A., Apollonio F., Liberti M., Caterina M., Ning Y., Multari C., Palego C., Cheng X., Hwang J.C.M., Lehigh University, US
In the last years, the development of broadband microwave sensors for cell detection has become a great challenge. In this work, a broadband microchamber integrated with microfluidics is used for cell detection in the GHz [...]
Field-directed and Template-assisted Magnetic Nanoparticle Self-assembly
The interest in field-directed assembly of colloidal magnetic nanoparticles has grown steadily in recent years due to a proliferation of applications including targeted drug therapy, biomedical imaging, among others. Such self-assembly holds promise as a [...]
Numerical Analysis of Coupled Particle-Fluid Transport and Free-Flow Magnetic Sorting in Microfluidic Systems
Magnetic beads are increasingly used in microfluidic systems to selectively separate and sort biomaterial from a specimen for a broad range of biomedical and clinical diagnostic applications. Most theoretical studies of such systems have been [...]
Open-Surface Microfluidics
The developments of open-surface microfluidics (OSM) for biotechnology are recent, and motivated by the development of point-of-care (POC) and home-care systems. The advantages of capillary systems are (1) low cost due to easy and fast [...]
Droplet Dispensing from Open to Close Digital Microfluidics
There are two types of DMF platforms: open and closed systems. Each platform has its own advantages. For instance, it is easier to access the droplet in the open systems; whereas, the closed system limits [...]
On-line production of polyelectrolyte coating on monodisperse alginate beads in an integrated microfluidic cartridge
Laffite G., Forvi E., Hadji C., Authesserre C., Alessio M., Costa G., Boizot F., Rivera F., CEA-LETI, FR
Continuous flow microfluidic devices have appeared to be a promising technology to automatise Polyelectrolytes multilayers (PEMs) coating on microbeads with repeatable and reliable results. However, no microfluidic devices have demonstrated PEMs coating on hydrogel beads [...]
Electrowetting on screen printed paper based substrate
In this work, electrowetting on dielectric (EWOD) is performed on a paper based substrate. Electrode patterns are fabricated on a paper substrate using screen printing. Conventional photolithography fabrication techniques are replaced by screen printing conductive [...]
Droplet actuation on a digital microfluidic chip using a 5 volt battery
This paper presents a circuit using a 5-volt DC battery to actuate droplets on a DMF chip. The output of the circuit is a controllable high voltage, high frequency AC signal which can actuate a [...]
Analysis of Stem Cell Culture Performance in a Microcarrier Bioreactor System
Human pluripotent stem cells (hPSCs) are capable of differentiating into all somatic cell types and hold great potential for future clinical applications. Recent studies on cell culture in stirred tank bioreactors indicate that mechanical forces [...]
Modeling of liquid pumping via microchannels
We present our finite element modeling and discuss the main principles of our water actuation technique for water transport in micron scale tubes. The effect of water flow actuation by application of surface acoustic waves [...]
Pore wall charge patterning and spatial profiles of electrical conductivity in short nanopores
Artificial nanopores are now used as filters, nanofluidic switches or biosensors. Given that their functioning often critically depends on pore conductivity it is important to determine what influences the pore conductivity and how far these [...]
A Simple and Robust Fabrication of Microwell Array by Pdms on a Glass Substrate for Cell-To-Cell Adhesion
We describe a simple micro-fabrication method by using polydimethylsiloxane (PDMS) patterns on a glass substrate that enables simultaneous control of cell-to-cell adhesion. While the microwells used previously facilitated the cell-to-cell formation by PDMS stamping method, [...]
Simulation of desolvated self-assembly in a picoliter drop of colloidal solution by dissipative particle dynamics
A method of dissipative particle dynamics of charged colloidal submicro- and nanoparticles in evaporating picoliter droplet of solution deposited on plane substrate is proposed for investigation of self-assembly and self-ordering of colloids during solute evaporation, [...]
Reliability Evaluation of Inkjet-Printed Silver Patterns for Application to Printed Circuit Board
Shin K.-Y., Kang H.S., Kang K.T., Kang H.S., Kang K.T., Hwang J.Y., Lee S-H., Kim J-M, Korea Institute of Industrial Technology, KR
Recently, several studies on the reliability of inkjet-printed patterns have been conducted to evaluate inkjet printing technology as a fabrication process for the printed circuit board industry. However, the methods and standards for evaluating the [...]
Superhydrophobic 3D Printed Surfaces by Dip-Coating
Here we demonstrate a technique to fabricate three-dimensional superhydrophobic patterns. First a three-dimensional pattern was designed by 3D printing using acrylonitrile butadiene styrene (ABS) as printing material. A linear printing algorithm is followed for the [...]
Fabrication of Active Digital Microfluidic Paper Chips with Inkjet-printed Patterned Electrodes and their Point-of Care Biomedical Application
Ko H., Lee J., Kim K., Kim Y., Kee Y., Kim K., Kim Y., Jung C-H, Choi J-H, Kwon O-S, Shin K., Sogang University, KR
Active, paper-based, microfluidic chips driven by electrowetting are fabricated by using inkjet printing and demonstrated for reagent transport and mixing. Instead of using the passive capillary force on the pulp to actuate a flow of [...]
Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2014: MEMS, Fluidics, Bio Systems, Medical, Computational & Photonics
Published: June 15, 2014
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Inkjet Design, Materials & Fabrication
ISBN: 978-1-4822-5827-1