37 publications
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Short Experimental Report on the Passive Microfluidic Flow in Fluid MechanicsBy Subhadeep Mukhopadhyay
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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Short Review on Passive Capillary Flow in Microfluidics with an Experimental Demonstration about the SU-8 based Microfluidic DeviceBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is fabricated by maskless lithography and indirect bonding technique. The surface-driven microfluidic flow of dyed water is recorded in the fabricated SU-8 device. Negative photoresist SU-8 is an efficient polymer to fabricate the microfluidic devices. A brief review on surface-driven passive microfluidic flow is provided in this short experimental report towards the applications in microfluidic lab-on-a-chip systems. This short …
Published in International Journal of Analytical and Applied Chemistry · Vol. 8, Issue 1, 2022 · pp. 1–6 Read article →
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Short Report on the Passive Microfluidic Flow of Ethanol towards Nanofluidics in NanotechnologyBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, a single gradual expansion microchannel is fabricated by polymethylmethacrylate (PMMA) as polymeric material using author’s own hands-on in the maskless lithography, hot embossing lithography, and direct bonding technique. Dyed ethanol is prepared as working liquid. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used by author to record the surface-driven microfluidic flow of dyed ethanol in the …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 2, 2021 · pp. 13–17 Read article →
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Experimental Demonstration on Polymer based MicrofluidicsBy Subhadeep Mukhopadhyay
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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Passive Capillary Flow of Dyed Ethanol for NanofluidicsBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, a single polymethylmethacrylate (PMMA) microchannel bend as microfluidic device is fabricated by maskless lithography, hot embossing lithography and direct bonding technique. Dyed ethanol is prepared and used as working liquid in this work. A CMOS camera is used to capture the surface-driven capillary flow of dyed ethanol in the fabricated PMMA microchannel bend. In future, this experimental work may be useful to establish the nanofluidic flow …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 1, 2021 · pp. 18–23 Read article →
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Nano-Scale Fluid Mechanics: A ReviewBy Subhadeep Mukhopadhyay
Abstract: This review article is mainly focused on microfluidics and nanofluidics. Nanofluidics is the subject to realise any nano-scale fluid mechanics governed inside the selected nanochannel. The surface-driven microfluidic flow of dyed water is experimentally demonstrated corresponding to one SU-8 based glass microfluidic device fabricated by maskless lithography and indirect bonding technique. This brief review may be helpful to establish the nanofluidic flow phenomena in future.
Published in International Journal of Composite and Constituent Materials · Vol. 7, Issue 1, 2021 · pp. 12–17 Read article →
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Surface-Driven Microfluidic Flow of Dyed Water for Nano-Scale Application towards the Fabrication of Nanofluidic SensorsBy Subhadeep Mukhopadhyay
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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SU-8 Based Glass Microfluidic Device Coated with Deposited Nano-Layer for Future Fabrication of Nanofluidic Microelectromechanical SystemsBy Subhadeep Mukhopadhyay
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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Short Review on the Features of Nanofluidics as the Nanoscale Fluid Mechanics in NanotechnologyBy Subhadeep Mukhopadhyay
Abstract: In this short review, author has reviewed on the features of nanofluidics based on the published literatures. Both of theory and experiment are needed to be developed related to Nanofluidics. Author has made a brief comparison between microfluidics and nanofluidics. Entire fluid mechanics is a branch of classical mechanics having the levels of bulk-fluidics, microfluidics and nanofluidics. Carbon nanotube (CNT) based nanofluidic flow phenomena are an interesting topic towards proper …
Published in International Journal of Applied Nanotechnology · Vol. 6, Issue 2, 2020 · pp. 5–9 Read article →
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Short Report on the Polymer based Microfluidic Device Fabricated by Lithographic TechniquesBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, a single microfluidic device is fabricated by maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Microchannel bend is the selected design to fabricate the microfluidic device. Dyed ethanol is selected and prepared as working liquid. The surface-driven capillary flow of dyed ethanol is recorded in the fabricated microchannel bend using a CMOS camera inside the materials-science laboratory. Effect of centrifugal force …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 2, 2020 · pp. 17–20 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 DevicesBy Subhadeep Mukhopadhyay
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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Dielectric Barrier Discharge Plasma Processing on Pristine PMMA Surfaces for Microfluidic Applications towards Applied NanotechnologyBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, a total of six individual microchannel bends as microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique using polymethylmethacrylate (PMMA). Air dielectric barrier discharge (DBD) plasma processing is the selected surface modification technique in this particular experimental work. Dyed aqueous ethanol (10% ethanol, 90% dyed water) is the prepared working liquid to study the microfluidic flow characteristics. Effect of channel aspect …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 1, 2020 · pp. 1–7 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 SystemsBy Subhadeep Mukhopadhyay
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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Experimental Studies on the Surface-Driven Microfluidic Flow of Dyed Working Liquids in Sudden Expansion Microchannels Fabricated by PolymerBy Subhadeep Mukhopadhyay
Abstract: In this experimental work, the sudden expansion microchannels are fabricated by maskless lithography, hot embossing lithography, drilling, direct bonding technique and chip separation technique using own hands-on of author completely. Total 15 individual sudden expansion microchannels are fabricated in this work using polymethylmethacrylate (PMMA) as optically transparent polymer. Effects of channel aspect ratio, surface wettability and liquid viscosity on surface-driven microfluidic flow are experimentally studied in the fabricated sudden expansion …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 1, 2020 · pp. 44–59 Read article →
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Studies on the Electrical Characteristics of GaN based HEMTs at the AlGaN Nano-Layer Thickness of 9 nmBy Avrajyoti Dutta, Sanjib Kalita, Subhadeep Mukhopadhyay
Abstract: In this work, we have designed total 25 individual structures of AlGaN/GaN high electron mobility transistors (HEMTs). Variations in drain current are studied with the change in drain voltage. Also, variations in drain current are studied with the change in gate voltage. Further, variations in drain current are studied with the change in aluminium mole fraction. The amount of drain current is higher in HEMT of lower gate length. This …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 6, Issue 1, 2020 · pp. 14–28 Read article →
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Experiments to Record the Capillary Flow of Dyed Waterin SU-8 based Glass Microfluidic Devicestowards the Fluidic PhenomenaBy Subhadeep Mukhopadhyay
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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Effect of Circular Polyimide Micropillars on Surface-Driven Capillary Flow of Dyed Working Liquids inside the SU-8 based Glass Microfluidic DevicesBy Subhadeep Mukhopadhyay
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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Short Review on Nanofluidics with the Experimental Demonstration on Microfluidic Capillary Flow inside Microchannel BendsBy Subhadeep Mukhopadhyay
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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Studies on the Electrical Characteristics of Single-Heterojunction GaN based HEMTs with AlGaN Nano-Layer of 21 nmBy Avrajyoti Dutta, Sanjib Kalita, Subhadeep Mukhopadhyay
Abstract: In this work, we have studied the electrical characteristics of single-heterojunction AlGaN/GaN high electron mobility transistors (HEMTs). The effects of drain voltage and gate voltage on variations of drain current have studied on the basis of simulated HEMT structures. Also, we have studied the effects of aluminium mole fraction, gate length and doping concentration on variations of drain current based on the simulated HEMT structures. This present work will be …
Published in International Journal of Applied Nanotechnology · Vol. 5, Issue 2, 2019 · pp. 26–38 Read article →
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Review on the Separation Mechanisms in Microfluidics for Bioengineering ApplicationsBy Subhadeep Mukhopadhyay
Abstract: In this review, author has mentioned different techniques of separation mechanisms in bioengineering, like passive separation, magnetic separation, electrical separation, optical separation and acoustic separation. The extraction of blood plasma from human whole blood by separating blood cells is a need in biomedical industry. In the recent past, Mukhopadhyay as author has demonstrated different passive techniques to separate the polystyrene microparticles of different sizes in the designed microfluidic laboratory-on-a-chip systems …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 1, 2018 · pp. 22–27 Read article →