IEEE Organizations related to Microchannels

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Conferences related to Microchannels

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2020 19th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm)

The ITherm Conference series is the leading international venue for scientific and engineering exploration of thermal, thermomechanical, and emerging technology issues associated with electronic devices, packages, and systems.


2020 42nd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE


2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)

All topics related to engineering and technology management, including applicable analytical methods and economical/social/human issues to be considered in making engineering decisions.


2020 IEEE International Conference on Plasma Science (ICOPS)

IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.


2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


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Most published Xplore authors for Microchannels

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Xplore Articles related to Microchannels

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AC electrical field for the isolation of cancer cells

2018 9th International Conference on Information and Communication Systems (ICICS), 2018

A novel microdevice for the continuous separation of cancer cells from blood is presented. The device is made from two parts, glass substrate where an array of electrodes is deposited and a PDMS layer that includes a microchannel. The microsystem uses non-uniform electric field to control the movement of living cells inside a microchannel that has one inlet and two ...


Morphology control of microchannel cross-section using sacrificial spinning fiber

2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS), 2017

This paper presents a novel method to manufacture specific cross-section microchannel by spinning profiled fiber. With spinning process, High Impact Polystyrene (HIPS) fibers with high profile degree can be drawn from a shaped spinneret orifice, and those fibers act as sacrificial mold to build microchannel with specific cross-section in PDMS. Microchannels with various shapes, from 55μm diameter circular to 220μm ...


Microchannel based Flexible Dynamic Strain Sensor

2019 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS), 2019

The dynamic measurement of strain is needed in several applications where frequent bending is experienced. For example, in the case of robotics and prosthesis, the strain sensors could indicate the bending of fingers or hand joints [1] , [2] . Likewise, it is needed to detect the damages to interconnects due to frequent bending in the flexible and wearable electronics ...


Design and Analysis of Microchannel for the Thermal Management of Multi-stacked LTCC Laminates

2018 19th International Conference on Electronic Packaging Technology (ICEPT), 2018

In micro-system packaging, the high-density integration of various chips and devices on the substrate imposes high demand on the heat dissipation capability of the substrate. LTCC substrates have been widely used in the packaging of radio frequency/microwave integrated circuits due to their satisfactory heat resistance, thermal conductivity, convenient and flexible wiring, and low coefficient of thermal expansion [1]. For high ...


Vascularization of capillary-scale channels in type I collagen gels

2015 41st Annual Northeast Biomedical Engineering Conference (NEBEC), 2015

This work examines physical and chemical signals that promote in vitro vascularization of capillary-scale channels in type I collagen gels. We show that retrograde pressure induces endothelial migration and cyclic AMP promotes endothelial stability. Together, these signals enabled vascularization of microchannels as narrow as 11 μm, matching the size scale of capillaries. Further optimization of these signals may allow the ...


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IEEE-USA E-Books

  • AC electrical field for the isolation of cancer cells

    A novel microdevice for the continuous separation of cancer cells from blood is presented. The device is made from two parts, glass substrate where an array of electrodes is deposited and a PDMS layer that includes a microchannel. The microsystem uses non-uniform electric field to control the movement of living cells inside a microchannel that has one inlet and two outlets. MDA-MB-231 breast cancer cells are successfully separated to a different sub-channel down the stream using non-uniform electric field generated by the layer of electrodes deposited at the bottom side of the microchannel. Numerical and experimental results for the separation of cells are presented.

  • Morphology control of microchannel cross-section using sacrificial spinning fiber

    This paper presents a novel method to manufacture specific cross-section microchannel by spinning profiled fiber. With spinning process, High Impact Polystyrene (HIPS) fibers with high profile degree can be drawn from a shaped spinneret orifice, and those fibers act as sacrificial mold to build microchannel with specific cross-section in PDMS. Microchannels with various shapes, from 55μm diameter circular to 220μm length square, from Y-shape, V-shape, L-shape to C-shape cross-section were both fabricated by the spinning-casting method. A PDMS swelling process has also been developed to remove large length-diameter ratio HIPS fiber (up to 1000:1) inside cured PDMS rapidly without mechanical extraction, it can also be used for rapid machining of complex three dimensional microchannels. This simple and mass productive method can improve specific surface area of microchannel, and provide various possibilities in microchannel design and fabrication.

  • Microchannel based Flexible Dynamic Strain Sensor

    The dynamic measurement of strain is needed in several applications where frequent bending is experienced. For example, in the case of robotics and prosthesis, the strain sensors could indicate the bending of fingers or hand joints [1] , [2] . Likewise, it is needed to detect the damages to interconnects due to frequent bending in the flexible and wearable electronics [3] - [5] . To this end, microchannel based technology can provide an efficient solution. This paper presents a flexible microfluidic channel-based sensor for the detection of dynamic strain. The sensor has been developed using Polydimethylsiloxane (PDMS). The micro-channel (dia~175 pm), fabricated using replica molding technique, was made conductive by filling with poly (3.4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) polymer. The developed strain sensor was subjected to various strains, which led to changes in the channel diameter and hence the resistance. We observed about 3 order (Δ R / R ~2800) increase in the resistance ( R ) value for 10% applied strain (Δ L / L. L = length of sensor) This lead to a gauge factor (GF= (Δ R / R )/(Δ L / L )) of ~280 for 10% applied strain, which is better (~70 times) than reported polymer based strain sensors [6] - [9] .

  • Design and Analysis of Microchannel for the Thermal Management of Multi-stacked LTCC Laminates

    In micro-system packaging, the high-density integration of various chips and devices on the substrate imposes high demand on the heat dissipation capability of the substrate. LTCC substrates have been widely used in the packaging of radio frequency/microwave integrated circuits due to their satisfactory heat resistance, thermal conductivity, convenient and flexible wiring, and low coefficient of thermal expansion [1]. For high integration and miniaturization as required by modules like high-power T/R components, under the current process conditions, it is difficult to fulfil the requirements with just one single substrate, so two or more stacked LTCC substrate laminates in one package must be considered. However, the thermal management of stacked laminates is a challenge to be overcome. In this paper, ANSYS software is used to physically model the structure of a microchannel network, namely a dual-layer spiral and serpentine microchannels. The heat-dissipating capability of the connected microchannel substrate mainly depends on the temperature rise of the lower substrate which containing the fluid outlet. The water mass flow rate at the inlet is controlled at 45ml/min can meet the heat dissipation requirements of 15W/cm2at the heat source of the upper and lower substrates, which can expand the applications of LTCC-based microwave power module, and can provide the technology support for miniaturized equipment.

  • Vascularization of capillary-scale channels in type I collagen gels

    This work examines physical and chemical signals that promote in vitro vascularization of capillary-scale channels in type I collagen gels. We show that retrograde pressure induces endothelial migration and cyclic AMP promotes endothelial stability. Together, these signals enabled vascularization of microchannels as narrow as 11 μm, matching the size scale of capillaries. Further optimization of these signals may allow the formation of perfused, functional capillary-scale vessels. Such engineered capillaries may assist studies of normal and pathological vascularization, and may provide building blocks to create clinically viable vascularized tissue constructs.

  • Modular microplasma ozone generators for water treatment system

    Compact and scalable ozone generator modules comprising multiple arrays of microchannel plasmas have been developed for commercial laundry and other water disinfection applications. Arrays consist of 24 channels each having a length and width of 1 ~ 5 cm and 250 ~ 500 μm, respectively. Modules consisting of 4 - 5 such arrays mounted into a plastic frame, produced ozone at a rate of 10 g-hr-1 and a concentration of 60 g-m-3 when O2served as the feedstock gas and its pressure and flow rate in the modular reactor were 1 atm. and ~4 liters/min. The overall dimensions of one module are ~5 cm × ~7 cm × ~10 cm (W×L×H). Ozone output is observed to scale linearly with the number of microchannel plasma devices and the applied gas flow rate. Heat due to ozone production in the module system was efficiently controlled by air fan cooling and a tandem flow design. Finally, ozone is efficiently produced up to commercial levels for laundry applications in a module system with ~90 v/v% oxygen provided by a portable oxygen concentrator. Reduction of an order of magnitude in weight and volume of modular ozone generator, relative to conventional dielectric barrier discharge systems, is offered by microplasma technology.

  • Independently controllable microwell array with fluidic multiplexer for mass production of embryonic bodies

    A palm-sized cell culture system “PASMA (Pressure Actuated Shapable Microwell Array)” has been developed for mass production of embryonic bodies (EBs) of human iPS cells. The key problem in increasing the number of microwells is the increase of the number of costly and large solenoid valves. In this report, we have introduced fluidic multiplexer circuits composed of pneumatically actuated normally-open valves and normally-closed valves. Thus, the number of microwells was increased from 100 to 256 despite decreasing the number of solenoid valves from 20 to 16. The results should accelerate the research and clinical application of PASMA for mass-production of high-quality EBs.

  • Highly-Sensitive Magnetic Tunnel Junction Based Flow Cytometer

    Flow cytometers are important instruments for biological and biomedical analyses. These instruments are large and expensive, and researchers are continuously striving to come up with smaller, cheaper, and more energy- efficient flow cytometers. In this work, we present a highly-sensitive magnetic tunnel junction (MTJ) based flow cytometer. An externally magnetized magnetic beads labeling cells were placed above an MTJ sensor that can measure the stray field surrounding the beads. It was found that each time labeled cells pass through the sensitive area of the sensor, a peak of signal was observed. The results demonstrate a novel MTJ based flow cytometer design approach for accurate detection of magnetically labeled cells.

  • Manifold design for uniform fluid distribution in parallel microchannels

    In this paper, we use an electrical circuit analogy to design a microfluidic manifold achieving a uniform distribution of flow across multiple channels with minimal pressure gradient throughout the flow. We investigate the impact of manifold design to the mass flow distribution derived from the electrical circuit analogy and then analyzed the flow distribution in microchannels using computational fluid dynamics including thermal modelling. We compared the flow uniformity in the parallel channels with other manifold designs and found that step manifold design has improved the flow and temperature uniformity of the parallel channels.

  • A numerical study of drag reduction of superhydrophobic surfaces in shipping industry

    As energy-conservation and emission-reduction become more and more severe, the concept of Green Ship has been proposed. And drag reduction is a realizable method to achieve this goal. Superhydrophobic surfaces (SHSs) whose contact angle is greater than 150° have attracted much attention because of the ability of realizing drag reduction in turbulent flows. However, few researchers focus on the application of SHSs in shipping industry. In this paper, a numerical study of turbulent channel flows and turbulent boundary layers developing over SHSs are performed. In the simulation, the VOF multiphase flow model is used for the gas-liquid phase flow, and a superhydrophobic surface microstructure grid with local encryption technology is adopted. The results show that within the range of ship economic speed, a stable gas vortex can form in the upper part of microstructure, and the drag reduction ratio of SHSs has a close relationship with size of velocity, gas- liquid contact area, and soaking time.



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