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115 articles for “microfluids”
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Experimental Studies on the Effects of Liquid Viscosity and Surface Wettability in PMMA Microfluidic Devices
Abstract: The polymethylmethacrylate (PMMA) microfluidic devices are fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. The effects of liquid viscosity, surface wettability and surface area to volume ratio on the surface-driven capillary flow are studied in the PMMA microfluidic devices using ethylene glycol, isopropyl alcohol (IPA), liquid mixture (aqueous IPA) and ethanol as working liquids. The diffusion coefficient is determined in each surface-driven capillary flow by comparing …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 1, 2017 · pp. 16–21 Read article
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Experimental Studies on the Capillary Flow Phenomena in polyimide based Glass Microfluidic Devices
Abstract: The polyimide based glass microfluidic devices are fabricated using the maskless lithography. Water is the only working liquid in this work. The effects of micropillar side length, microfluidic friction and surface area to volume ratio on the surface-driven capillary flow of water are studied experimentally. The surface-driven capillary flow of water is slower due to higher microfluidic friction. This work will be useful to control the water inside the microfluidic …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 7, Issue 1, 2017 · pp. 8–11 Read article
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Aesthetic Values of the Surface-Driven Capillary Flow in SU-8 based Glass Microfluidic Devices
Abstract: In this research paper, author has fabricated total 422 individual SU-8 based glass microfluidic devices by the maskless lithography, clamping, and diamond-like carbon (DLC) coating using his own hands-on completely. Also, total 422 individual Audio-Video- Interleave-Files as ‘FileName.avi’ related to these microfluidic devices have been recorded and analysed by the author completely. The influence of effective viscosity on the surface- driven capillary flow of aqueous microparticle suspensions has been experimentally …
Published in Journal of Nuclear Engineering & Technology · Vol. 6, Issue 3, 2016 Read article
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Microfluidic Flow of Aqueous Ethanol and Aqueous Isopropyl Alcohol in the SU-8 based Microchannel Bends
Abstract: In this work, a total of 8 individual SU-8 based microchannel bends as microfluidic devices are fabricated by the maskless lithography and indirect bonding technique according to the performed designs. Dyed aqueous ethanol (50% dyed water, 50% ethanol) and dyed aqueous isopropyl alcohol (50% dyed water, 50% isopropyl alcohol) are prepared and used as working liquids to test the fabricated microfluidic devices. A suitable CMOS camera is used to record …
Published in Journal of Aerospace Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 23–26 Read article
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Surface-Driven Capillary Flow of Dyed Water in the Fabricated Microfluidic Devices for the Applications in Water Purification
Abstract: In this work, two SU-8 based glass microfluidic devices are fabricated by the maskless lithography and indirect bonding technique. Dyed water (80% dye, 20% water) is chosen as the working liquid to study the recorded surface-driven capillary flow in fabricated microfluidic devices. CMOS camera is used to capture the surface-driven capillary flow producing two individually recorded audio-video-interleave-files (as FileName.avi). This work may be useful in water purification using the SU-8 …
Published in Journal of Water Pollution & Purification Research · Vol. 6, Issue 1, 2019 · pp. 14–17 Read article
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A Brief Introduction on the Electrokinetic Mixing and Separation in Microfluidic Systems
Abstract: Electrokinetics encompasses the analysis of fluid or particle motion in the electrical field; includes electroosmosis, electrophoresis, dielectrophoresis, electro-wetting, etc. Electrokinetic applications in the production of microfluidic systems have become quite attractive over the last decade. Electro-kinetic systems usually do not need any additional mechanical moving parts and may be made compact by removing the power source with a small battery. Electro-kinetic based microfluidic systems may also serve as a feasible …
Published in Journal of Aerospace Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 24–34 Read article
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Short Review on Anti-adhesion Coating in Microfluidics for Applications in Biotechnology
Abstract: In this short review, the use of diamond-like carbon (DLC) as anti-adhesion coating in microfluidics is described. The anti-adhesion coating is required on SU-8 based silicon stamp surface to fabricate the polymethylmethacrylate (PMMA) based microfluidic devices using maskless lithography, hot embossing lithography and direct bonding technique. Also, the DLC coating is required on PMMA microchannel surface to change the surface-driven capillary flow of water in PMMA microfluidic devices. The static …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 11, Issue 1, 2021 · pp. 1–3 Read article
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Short Report on the Microfluidic Flow of Dyed Ethylene Glycol
Abstract: In this experimental work, a single polymethylmethacrylate (PMMA) microfluidic device as gradual expansion microchannel is fabricated by maskless lithography, hot embossing lithography and direct bonding technique. Dyed ethylene glycol is prepared and used as working liquid in this work. A CMOS camera is used to capture the passive microfluidic flow of dyed ethylene glycol in the fabricated microfluidic device. Nano fluidics is the nano-scale fluid mechanics in nanotechnology. In future, …
Published in Emerging Trends in Chemical Engineering · Vol. 8, Issue 2, 2021 · pp. 10–13 Read article
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Experimental Studies on the Passive Capillary Flow of Non-aqueous Working Liquids in PMMA Microfluidic Devices of Rectangular Cross-Sections
Abstract: The polymethylmethacrylate (PMMA) microfluidic devices are fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. The effects of liquid viscosity, surface wettability and channel aspect ratio on the surface-driven capillary flow of non-aqueous working liquids are studied in the fabricated PMMA microfluidic devices. The working liquids are ethylene glycol, isopropyl alcohol (IPA) and ethanol. These experimental studies will be useful to manipulate different non-aqueous working liquids inside …
Published in Journal of Polymer & Composites · Vol. 5, Issue 2, 2017 · pp. 29–33 Read article
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Surface-Driven Capillary Flow of the Dyed Aqueous Ethanol in a single SU-8 based Glass Microfluidic Device integrated with the Arrays of Square Polyimide Micropillars
Abstract: In this work, a single SU-8 based glass microfluidic device is fabricated by the maskless lithography and indirect bonding technique. A particular polyimide layer at the selected portions and the arrays of square polyimide micropillars at the other portions are integrated on the microchannel bottom wall by the maskless lithography. Dyed aqueous ethanol (70% dyed water, 30% ethanol) is prepared as the working liquid in this work. A CMOS camera …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 33–37 Read article
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Surface-Driven Capillary Flow of Aqueous Microparticle Suspensions as Working Liquids in the PMMA Microfluidic Devices
Abstract: AbstractPolymethylmethacrylate (PMMA) microfluidic devices have been fabricated by the maskless lithography, hot embossing lithography, drilling and direct bonding technique. The influence of effective viscosity on the speed of surface-driven capillary flow of aqueous microparticle suspensions has been studied. The surface-driven capillary flow of any particular aqueous microparticle suspension is faster in the microchannel of larger channel aspect ratio. Also, the surface-driven suspension flow is faster on the surface of higher …
Published in Trends in Opto-electro & Optical Communication · Vol. 7, Issue 1, 2017 · pp. 18–21 Read article
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Experimental Studies on the Surface-Driven Capillary Flow of Ethanol in the Microfluidic Microchannel Bends
Abstract: Total 36 individual microfluidic devices are fabricated in this work. These microfluidic devices are fabricated by the maskless lithography, hot embossing lithography, direct bonding technique and indirect bonding technique. The surface-driven capillary flow of ethanol is faster in the microchannel of larger channel aspect ratio. The surface-driven capillary flow of ethanol is faster in the microchannel due to the applied centrifugal force. These experimental results are similar in both of …
Published in Recent Trends in Fluid Mechanics · Vol. 3, Issue 3, 2016 · pp. 19–22 Read article
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Short Report on Surface-Driven Water Flow in PMMA Microfluidic Device towards the Principles of Nanofluidics
Abstract: In this experimental work, a single polymethylmethacrylate (PMMA) microfluidic device is fabricated by maskless lithography, hot embossing lithography and direct bonding technique. Dyed water is prepared and used as working liquid. A CMOS camera is used to record the surface-driven microfluidic flow of dyed water in fabricated microfluidic device. The centrifugal effect on capillary flow is prominent in the recorded snap shot images. This work may be useful to generate …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 23, Issue 1, 2021 · pp. 1–4 Read article
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Microfluidic Flow of Dyed Water in the PMMA Microchannels
Abstract: In this work, total three individual polymethylmethacrylate (PMMA) microfluidic devices are fabricated by the maskless lithography, hot embossing lithography, drilling, direct bonding technique and chip separation technique. Dyed water is the working liquid. One sudden expansion microchannel and two microchannel bends are tested by dyed water. The surfacedriven capillary flow is recorded by the CMOS camera. This work will be useful in the fabrication of PMMA lab-on-a-chip systems for microfluidic …
Published in Research & Reviews : Journal of Physics · Vol. 6, Issue 3, 2017 · pp. 10–13 Read article
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Experimental Demonstration on Polymer based Microfluidics at the First Quantisation in Physics
Abstract: Difference between classical mechanics and quantum mechanics is the first quantisation in physics as the quantum theory is first quantisation in physics. Quantum field theory is the second quantisation in physics. Principles of fluid mechanics belong to the classical mechanics (non-quantum). Hence, fluid mechanics is present at the first quantisation in physics. Bulk-fluidics, microfluidics and nanofluidics are the levels of fluid mechanics from the aspects of miniaturisation. In this experimental …
Published in Research & Reviews : Journal of Physics · Vol. 10, Issue 2, 2021 · pp. 1–4 Read article
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Short Experimental Report on Lithographic Technique in Microfluidics
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is fabricated by the maskless lithography and indirect bonding technique. The sealing by indirect bonding technique is perform during the hard baking in maskless lithography. Dyed ethylene glycol is prepared as the working liquid. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used to record the surface-driven microfluidic flow of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 1–5 Read article
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Short Report on Capillary Flow in Microfluidics
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is fabricated by masklesslithography and indirect bonding technique. The sealing between glass lid and SU-8 basedmicrochannel structure is performed by indirect bonding technique during the hard baking. Dyed wateris prepared as working liquid to record the surface-driven capillary flow in microfluidics using a CMOScamera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second. Thiswork may …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 1, 2021 · pp. 34–37 Read article
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Recording of Surface-Driven Laminar Flow in Dual Sudden Expansion Microchannel of a Single SU-8 based Glass Microfluidic Device
Abstract: In this work, the SU-8 based glass microfluidic device is fabricated by maskless lithography and indirect bonding technique. A dual sudden expansion microchannel is designed and fabricated inside this fabricated glass microfluidic device. Dyed water is prepared as working liquid by mixing commercially available food dye with distilled water. The surface-driven laminar flow of dyed water inside the fabricated microchannel is recorded by a CMOS camera. This experimental work is …
Published in Recent Trends in Fluid Mechanics · Vol. 7, Issue 1, 2020 · pp. 24–27 Read article
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Polymer Processing in Microfluidics towards the Fabrication of Nanofluidic Systems in Nanotechnology
Abstract: This experimental work reports two individual SU-8 based glass microfluidic devices to be fabricated by maskless lithography along with indirect bonding technique using the steps of SU-8 processing. Dyed water is the selected and prepared working liquid for this work. The CMOS camera is used to record the passive microfluidic flow of dyed water in fabricated devices. In future, this report may be suitable to investigate the nanofluidic flow phenomena …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 11, Issue 2, 2021 · pp. 27–31 Read article
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Nano-Scale Coating to Demonstrate the Capillary Motion of Dyed Water in a Single PMMA Microfluidic Device towards the Probable Fabrication of nanofluidic Engine-on-a-Chip
Abstract: A single microfluidic device is fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography, nano-coating of diamond-like carbon (DLC), and direct bonding technique. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used to record the surface-driven microfluidic flow of dyed water. A comparison is made between the experimental results and analytical solution to determine the diffusion coefficient in this …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 22, Issue 3, 2020 · pp. 12–15 Read article