Fabrication of a 3 dimensional dielectrophoresis electrode by a metal inkjet printing method

Lee, Seung Hyun; Yun, Gyu-Young; Koh, Yul; Lee, Sang-Ho; Kim, Yong-Kweon

doi:10.1186/2213-9621-1-5

Cited by 14 publications

(4 citation statements)

References 13 publications

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“…Over the past few decades, DEP has been subjected to thorough analytical, numerical, and experimental investigations via applying it to manipulation, characterization, separation, focusing, switching, and medium exchange for a variety of cells, viruses, bacteria, DNA, and even nanoparticles. − …”

Section: Theorymentioning

confidence: 99%

Multiple Particle Manipulation under Dielectrophoresis Effect: Modeling and Experiments

et al. 2020

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The dissipative particle dynamics (DPD) technique was employed to design multiple microfluidic devices for investigating the motion of bioparticles at low Reynolds numbers. A DPD in-house FORTRAN code was developed to simulate the trajectories of two microparticles in the presence of hydrodynamic and transverse deflecting force fields via considering interparticle interaction forces. The particle−particle interactions were described by using a simplified version of the Morse potential. The transverse deflecting force considered in this microfluidic application was the dielectrophoresis (DEP) force. Multiple microfluidic devices with different configurations of microelectrodes were numerically designed to investigate the dielectrophoretic behavior of bioparticles for their trajectories and the focusing of bioparticles into a single stream in the middle of the microchannel. The DPD simulation results were verified and validated against previously reported numerical and experimental works in the literature. The computationally designed microdevices were fabricated by employing standard lithographic techniques, and experiments were conducted via taking red blood cells as the representative bioparticles. The experimental results for the trajectories and focusing showed good agreement with the numerical results.

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Section: Theorymentioning

confidence: 99%

Multiple Particle Manipulation under Dielectrophoresis Effect: Modeling and Experiments

et al. 2020

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“…Printing techniques, and especially inkjet‐printing, can be used to produce DEP electrodes on large‐scale substrates. Printing has been already used in combination with electron beam fabrication method [ 24 ] and only one publication has so far reported on screen‐printed DEP electrodes. [ 25 ] Besides the ability to fabricate large DEP electrode areas on any substrates, including flexible ones, the use of inkjet‐printing allows the rapid testing of different electrode patterns (digital printing technique).…”

Section: Introductionmentioning

confidence: 99%

Printed Dielectrophoretic Electrode‐Based Continuous Flow Microfluidic Systems for Particles 3D‐Trapping

Challier

Lemarchand

Deanno

et al. 2021

Part & Part Syst Charact

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Inkjet‐printing is used to fabricate dielectrophoretic electrodes able to trap polystyrene (PS) microparticles as well as model planktonic cells. The possibility of rapid prototyping offered by inkjet‐printing allows the rational design of microchannels with tailored electric field distributions experienced by the suspended particles, which in turn provides a handle to drive them towards target regions. Specifically, this goal is achieved using two facing substrates constituting the bottom and the top walls of the channel, with a pair of interdigitated electrodes previously patterned by inkjet‐printing on each side. Influence of electrode polarization (magnitude and frequency of the input signal) is investigated both theoretically, by modeling the electric field distribution inside the channel, and experimentally using confocal fluorescence microscopy. The printed device is able to sort circulating PS particles as a function of their size, with diameters ranging from 0.5 to 5 µm, as well as to separate planktonic species according to their composition (Alexandrium minutum versus Prorocentrum micans). This work paves the way for the development of large‐area, microstructured dielectrophoretic electrodes able to separate the constituents of samples at flow rates up to 150 µL mn−1.

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“…The proposed device also has the merit that it does not require focusing prior to separation of the heterogeneous sample. Three-dimensional microfabrication techniques required for realizing the conceptualized device are becoming common as can be observed from several articles in literature [5,[9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Modeling a Dielectrophoretic Microfluidic Device with Vertical Interdigitated Transducer Electrodes for Separation of Microparticles Based on Size

2020

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This article conceptualizes and mathematically models a dielectrophoretic microfluidic device with two sets of interdigitated transducer vertical electrodes for separation of a binary heterogeneous mixture of particles based on size; each set of electrodes is located on the sidewalls and independently controllable. To achieve separation in the proposed microfluidic device, the small microparticles are subjected to positive dielectrophoresis and the big microparticles do not experience dielectrophoresis. The mathematical model consists of equations describing the motion of each microparticle, fluid flow profile, and electric voltage and field profiles, and they are solved numerically. The equations of motion take into account the influence of phenomena, such as inertia, drag, dielectrophoresis, gravity, and buoyancy. The model is used for a parametric study to understand the influence of parameters on the performance of the microfluidic device. The parameters studied include applied electric voltages, electrode dimensions, volumetric flow rate, and number of electrodes. The separation efficiency of the big and small microparticles is found to be independent of and dependent on all parameters, respectively. On the other hand, the separation purity of the big and small microparticles is found to be dependent on and independent of all parameters, respectively. The mathematical model is useful in designing the proposed microfluidic device with the desired level of separation efficiency and separation purity.

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Fabrication of a 3 dimensional dielectrophoresis electrode by a metal inkjet printing method

Cited by 14 publications

References 13 publications

Multiple Particle Manipulation under Dielectrophoresis Effect: Modeling and Experiments

Multiple Particle Manipulation under Dielectrophoresis Effect: Modeling and Experiments

Printed Dielectrophoretic Electrode‐Based Continuous Flow Microfluidic Systems for Particles 3D‐Trapping

Modeling a Dielectrophoretic Microfluidic Device with Vertical Interdigitated Transducer Electrodes for Separation of Microparticles Based on Size

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