A5018794855- Characterization and Applications of Magnetic Nanoparticles
- Electrowetting and Microfluidic Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Micro and Nano Robotics
- Microfluidic and Bio-sensing Technologies
- Nanofluid Flow and Heat Transfer
- Semiconductor materials and devices
- Nanoparticle-Based Drug Delivery
- Fluid Dynamics and Thin Films
- Electrohydrodynamics and Fluid Dynamics
- Advanced Thermodynamics and Statistical Mechanics
- Ion-surface interactions and analysis
- Heat Transfer and Optimization
- Magnetic and transport properties of perovskites and related materials
- Heat Transfer and Boiling Studies
- nanoparticles nucleation surface interactions
- Luminescence Properties of Advanced Materials
- Protist diversity and phylogeny
- Magnetic Properties and Synthesis of Ferrites
- Advanced Materials and Mechanics
- Ga2O3 and related materials
- Nanoplatforms for cancer theranostics
- Bone Tissue Engineering Materials
- Advanced Thermoelectric Materials and Devices
- Optical Coherence Tomography Applications
Dr. Hari Singh Gour University
2024
Nanyang Technological University
2014-2023
Luxembourg Institute of Science and Technology
2023
Singapore-HUJ Alliance for Research and Enterprise
2018-2022
Savitribai Phule Pune University
2013-2016
Centre for Military Airworthiness and Certification
2012
Abstract Droplet microfluidics offers a range of Lab-on-a-chip (LoC) applications. However, wireless and programmable manipulation such droplets is challenge. We address this challenge by experimental modelling studies uniform magnetic field induced merging ferrofluid based droplets. Control droplet velocity was achieved through flow rate ratio. Conditions for with respect to were studied. Merging mixing colour dye + magnetite composite demonstrated. Our numerical results are in good...
Magnetic droplets on a microfluidic platform can act as micro-robots, providing wireless, remote, and programmable control. This field of droplet micro-magnetofluidics (DMMF) is useful for merging, mixing synthesis Janus structures. Specifically, magnetic particles (MJP) are protein DNA detection well magnetically controlled bioprinting. However, MJP with control the functional phases challenge. Hence, we developed high flow rate, surfactant-free, wash-less method to synthesize by...
Spreading of a water based ferrofluid core, cladded by diamagnetic fluid, in three-stream micromixer channels was studied. This spreading, induced an external magnetic field, is known as magnetofluidic spreading (MFS). MFS useful for various novel applications where control fluid-fluid interface desired, such micromixers or micro-chemical reactors. However, fundamental aspects are still unclear, and model without correction factors lacking. Hence, this work, both experimental numerical...
Magnetic droplets are versatile tools for a range of lab-on-a-chip (LoC) applications. The combination uniform magnetic field and droplet offers wireless programmable manipulation. We performed LoC experiments numerical studies on ferrofluid under the influence field. dynamic behavior flowing was examined. size, shape, interdroplet spacing velocity could be controlled by tuning susceptibility ferrofluid, viscosity carrier medium, flow rates. Our droplet-based micromagnetofluidic model is in...
Efficient thermal management is an urgent unmet need for a plethora of energy-generating and consuming devices systems. An improved cooling high-power light-emitting diodes (LED) used in modern lighting will enhance energy savings, lifetime, maintain high luminosity longer time. However, current passive techs are unable to address this challenge. We have performed detailed experimental simulation investigations challenge, resulting the magnetic nanofluid (MNFC) device providing highest LED....
High-throughput (HT) chemical synthesis facilitates accelerated materials discovery products. However, HT methods are limited by the need for expensive robotic systems, complicated methodology, and low yield. Hence, we developed a hyper-heuristic combinatorial flow (HCFS) device capable of composition gradient generation production an adequate mass Fe-Co-Ni alloy nanoparticles. A library 91 powder compositions was synthesized using this technique. high-throughput spark plasma sintering...
Abstract Superior passive cooling technologies are urgently required to tackle device overheating, consequent performance degradation, and service life reduction. Magnetic cooling, governed by the thermomagnetic convection of a ferrofluid, is promising emerging heat transfer technology meet these challenges. Hence, we studied metrics, non-dimensional parameters, various ferrite metal-based ferrofluids. The magnetic pressure, friction factor, power transfer, exergy loss were determined...
Wireless and programmable manipulation of droplets is a challenge. We addressed this challenge by combination magnetic fluids hybrid fields. investigated the remote, wireless ferrofluid in capillary microfluidic platform uniform non-uniform The time-dependent motion under influence field was studied. Actuation inter-droplet spacing could be controlled tuning strength. viscosity on investigated. merging (a) ferrofluid-ferrofluid (b) ferrofluid-rhodamine demonstrated. Simulation experimental...
Magnetofluidic spreading (MFS) is a phenomenon in which uniform magnetic field used to induce of ferrofluid core cladded by diamagnetic fluidic streams three-stream channel. Applications MFS include micromixing, cell sorting and novel microfluidic lab-on-a-chip design. However, the relative importance parameters govern still unclear, leading non-optimal control MFS. Hence, this work, effect various key on was experimentally numerically studied. Our multi-physics model, combines analysis,...
The advantages of ferrofluids in microfluidic lab-on-a-chip applications include remote control the fluid flow within chips, e.g., mixing species using an external uniform magnetic field. Hence, three-stream systems consisting a ferrofluid core clad by two streams diamagnetic silicone oil were studied. instability ferrofluid, subjected to field, was also When strength this field increased critical value, spread toward and transient developed at ferrofluid-silicone interface. Further...
Optofluidics combines optics and fluid dynamics to integrate photonic capabilities with various fluidic platforms. However, control for applications is a challenge. Magnetofluidic laser scattering (MFLS) offers novel approach wireless, programmable control. We report the of MFLS aqueous magnetic fluids range applied fields. The was observed in form vertical streaks due from self-assembled ordered structures nanoparticles. time evolution investigated at different role hydrodynamic parameters...