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82 articles for “dyed water”
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Experiments to Record the Capillary Flow of Dyed Waterin SU-8 based Glass Microfluidic Devicestowards the Fluidic Phenomena
Abstract: In this experimental work, a set of three individual leakage-free SU-8 based glass microfluidic devices are fabricated by maskless lithography and proper indirect bonding technique. Dyed water(50% distilled water, 50% red dye) is prepared and used as working liquid. The microfluidic leakage is experimentally demonstrated in other set of two leaky microfluidic devices due to improper indirect bonding technique. The effect of surface-to-volume ratio on surface-driven capillary flow of dyed …
Published in International journal of Nanobiotechnology · Vol. 6, Issue 1, 2020 · pp. 13–19 Read article
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Surface-Driven Microfluidic Flow of Dyed Water for Nano-Scale Application towards the Fabrication of Nanofluidic Sensors
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is fabricated by maskless lithography and indirect 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 the fabricated SU-8 device. Leakage-free surface-driven microfluidic flow of dyed water is recorded. Nanofluidics is the next level of fluid mechanics after microfluidics towards miniaturisation of …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 7, Issue 1, 2021 · pp. 19–22 Read article
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Passive Capillary Flow of Dyed Water in SU-8 based Glass Microfluidic Devices integrated with Polyimide Layer on the Bottom Wall
Abstract: In this work, total 4 individual SU-8 based glass microfluidic devices are fabricated by the maskless lithography and indirect bonding technique. The polyimide layer is integrated on the selected portion of glass bottom wall of each device. Each passive capillary flow of dyed water is recorded by a CMOS camera catching 25 frames per second. This work will be useful to fabricate the SU-8 based laboratory-on-a-chip systems for microfluidic applications. …
Published in International Journal of Chemical Separation Technology · Vol. 4, Issue 1, 2018 · pp. 13–15 Read article
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Treatment of Dyeing Waste Water by Using Garlic Extract as a Natural Coagulant
Abstract: Coagulation is the process of removal of very fine particles by forming bigger flocs in the water. But this process is not much efficient in waste water treatment as in the treatment of drinking water. This is because of adding chemical coagulant for the treatment of waste water. Use of chemicals in treatment of dyeing waste water causes formation of non-biodegradable sludge. To avoid this we made an attempt in …
Published in International Journal of Water Resources Engineering · Vol. 1, Issue 1, 2015 · pp. 23–30 Read article
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Activated Carbon from Rice Husk for Treating Dye Waste Water
Abstract: This study was undertaken to explore the possibility of utilizing rice husk (RH) for the production of activated carbon because of its abundant, renewable, and biodegradable raw resource, and properties such as its chemical stability, oil absorption, surface area, iodine value, and high reactivity, resulting from the presence of chemically reactive hydroxyl groups. RH is roasted at high % with low cost chemical as catalyst to reduce time, with temperature …
Published in International Journal of Green Chemistry · Vol. 1, Issue 2, 2015 · pp. 29–36 Read article
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SU-8 Based Glass Microfluidic Device Coated with Deposited Nano-Layer for Future Fabrication of Nanofluidic Microelectromechanical Systems
Abstract: Two SU-8 based glass microfluidic devices are fabricated by maskless lithography and laboratory-made clamping. The inner walls of one device are coated with nano-layer of diamond like carbon (DLC) using the plasma enhanced chemical vapour deposition (PECVD) system. The other device is remained uncoated. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used to record each surface-driven microfluidic flow of dyed …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 6, Issue 2, 2020 · pp. 60–63 Read article
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Surface-Driven Capillary Flow of Dyed Working Liquid in the SU-8 based Glass Microfluidic Device Fabricated by Maskless Lithography and Indirect Bonding Technique
Abstract: A single SU-8 based glass microfluidic device is fabricated by the maskless lithography and indirect bonding technique, using the negative photoresist SU-8. Polymethylmethacrylate (PMMA) dissolved in EC solvent (SU-8 developer) is used as the prepared adhesive material in the indirect bonding technique. Dyed water (90% red coloured food dye, 10% distilled water) is prepared as the working liquid. A CMOS camera catching 25 frames per second with a corresponding time-scale …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 4, Issue 2, 2018 · pp. 26–31 Read article
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Experimental Demonstration on Polymer based Microfluidics
Abstract: In this experimental work, a single polymer based gradual expansion microchannel is designed. This microchannel is fabricated by the maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Dyed water is the prepared working liquid in this work. The surface-driven (passive) microfluidic flow of dyed water is recorded in the fabricated device using a CMOS camera catching 25 frames per second with a corresponding time-scale resolution …
Published in International Journal of Polymer Science and Engineering · Vol. 7, Issue 1, 2021 · pp. 23–26 Read article
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Short Review on Nanofluidics with the Experimental Demonstration on Microfluidic Capillary Flow inside Microchannel Bends
Abstract: In this research work, author has presented a short review on nanofluidics. Total three individual microchannel bends as microfluidic devices are designed, fabricated and tested in this experimental work using author’s own hands-on completely. Polymethylmethacrylate (PMMA) is the selected polymeric material to fabricate these microfluidic devices. Dyed water is prepared as working liquid to test these microfluidic devices. According to this experimental study, the surface-driven microfluidic flow of dyed water …
Published in International Journal of Applied Nanotechnology · Vol. 6, Issue 1, 2020 · pp. 16–22 Read article
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Development of dynamic model for alkaline water electrolyser: Application to disturbance analysis
Abstract: A dynamic model of an alkaline water electrolyser plant has been developed to study its time dependent behaviour when it is subjected to dynamically varying inputs like changing electrolyte flow, inlet temperature, pressure, current, voltage. Such dynamic conditions are expected to arise during start up and shut down and also when the electrolyser is coupled to a nuclear or renewable electricity source, both of which exhibit time dependent power output …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 1, 2019 · pp. 11–23 Read article
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Experimental Studies on the Surface-Driven Capillary Flow of Water in Pristine and Processed Microfluidic Devices Fabricated by PMMA
Abstract: In this work, air dielectric barrier discharge (DBD) plasma processing on pristine polymethylmethacrylate (PMMA) flat surface is the chosen surface modification technique to vary the surface wettability creating a difference in microfluidic speed of dyed water. Straight microchannel of uniform width, microchannel with integrated micropillars on bottom wall, and microchannel bend are the proposed designs of PMMA microfluidic devices in this work. Each microfluidic flow of dyed water is recorded …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 1, 2018 · pp. 33–38 Read article
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Short Report on the Effect of Atmospheric Dielectric Barrier Discharge Plasma Processing to Control the Capillary Flow in Polymer based Microfluidic Devices
Abstract: In this experimental work, a couple of microfluidic devices are fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography and direct bonding technique. One device is fabricated by pristine PMMA, and the other device is fabricated by dielectric barrier discharge (DBD) plasma processed PMMA. Dyed water is selected and prepared as working liquid. Each surface-driven capillary flow of dyed water is recorded by a CMOS camera. This work …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 2, 2020 · pp. 1–4 Read article
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Short Experimental Report on the Passive Microfluidic Flow in Fluid Mechanics
Abstract: In this work related to experiments, two individual polymethylmethacrylate (PMMA) based microfluidic devices (microchannel bends) are fabricated by the following techniques: (a) maskless lithography, (b) hot embossing lithography, and (c) direct bonding technique. Dyed water is chosen as working liquid in this particular work. The CMOS camera is used to capture each passive microfluidic flow of dyed water in the fabricated devices. The effects of channel aspect ratio and centrifugal …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 32–37 Read article
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Experimental Demonstration on the Recording of Capillary-Filled Microfluidic Devices Fabricated by Polymeric Material
Abstract: In this present experimental work, total 52 individual PMMA microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique in a cleanroom laboratory. The selected working liquids are dyed water, dyed aqueous ethanol and dyed aqueous isopropyl alcohol and are prepared in a materials-science laboratory. Fabricated microfluidic devices are tested by the prepared aqueous working liquids, and each capillary-filled device after the surface-driven microfluidic flow is …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 31–41 Read article
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Thermodynamic Explanation on Surface-Driven Capillary Flow of Working Liquids in the Microfluidic Devices Fabricated by Polymers
Abstract: In this experimental work, total 100 individual microfluidic devices are fabricated by polymers using author’s own hands-on completely. A set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by SU-8 using the maskless lithography and indirect bonding technique. Another set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by PMMA using the maskless lithography, hot embossing …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 1, 2020 · pp. 45–70 Read article
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Effect of Circular Polyimide Micropillars on Surface-Driven Capillary Flow of Dyed Working Liquids inside the SU-8 based Glass Microfluidic Devices
Abstract: In this experimental work, total 8 individual SU-8 based glass microfluidic devices are fabricated using Mukhopadhyay’s own hands-on completely. Maskless lithography and indirect bonding technique are the methods to fabricate these devices. 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 capillary flow in each device. Dyed water and dyed ethylene glycol are the selected and prepared …
Published in International Journal of Water Resources Engineering · Vol. 6, Issue 1, 2020 · pp. 1–9 Read article
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Exploring Watersheds: Assessing Drainage Basin Characteristics and Management Approaches for Channel and Overland Flows
Abstract: Abstract: A watershed also known as a drainage basin or catchment area, constitutes a fundamental hydrological unit encompassing a delineated land surface from which all runoff converges into a common drainage system, channel, or water body. Recognized as vital frameworks for resource assessment and sustainable development planning, watersheds epitomize the intricate interplay between land and water resources, offering optimal synergies for holistic management approaches. This paper embarks on a comprehensive …
Published in International Journal of Landscape Planning and Architecture · Vol. 10, Issue 1, 2024 · pp. 24–34 Read article
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Experiments on the Passive Capillary Flow of Aqueous Ethanol in Sudden Expansion Microchannels towards the Applications in Nanofluidics and Nanoelectromechanical Systems
Abstract: In this work, total three individual sudden expansion microchannels are designed and fabricated by maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Polymethylmethacrylate (PMMA) is used as the selected polymer to fabricate these microchannels. Aqueous ethanol (15% ethanol, 85% dyed water) is prepared and used as dyed working liquid. Surface-driven (passive) capillary flow of prepared working liquid is recorded by a CMOS camera corresponding to …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 1, 2020 · pp. 15–22 Read article
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Waste Water Treatment by Using Garlic Extract as a Natural Coagulant
Abstract: Coagulation is the process of removal of very fine particles by forming bigger flocs in the water. But this process is not much efficient in waste water treatment as in the treatment of drinking water. This is because of adding chemical coagulant for the treatment of waste water. Use of chemicals in treatment of dyeing waste water causes formation of non-biodegradable sludge. To avoid this we made an attempt in …
Published in International Journal of Water Resources Engineering · Vol. 2, Issue 2, 2016 · pp. 24–31 Read article
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Passive Capillary Flow of Dyed Aqueous Ethanol in the Leakage-Free PMMA Microchannel
Abstract: A single polymethylmethacrylate (PMMA) microfluidic device is fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. This device is tested by dyed aqueous ethanol (10% ethanol, 90% dyed water) in leakage-free condition. The passive capillary flow of dyed aqueous ethanol is recorded by a CMOS camera catching 25 frames per second. This work will be useful in commercial bioengineering applications. Keywords: Passive capillary flow, PMMA, Aqueous ethanol, …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 1, 2018 · pp. 12–14 Read article