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SELECTBIO Conferences Point-of-Care & Rapid Diagnostics 2022

Sagar Bhagwat's Biography

Sagar Bhagwat, Research Fellow, Albert-Ludwigs-University of Freiburg, Department of Microsystems Engineering (IMTEK)

Sagar Bhagwat graduated from the Institute of Chemical Technology, Mumbai in 2015. He obtained his M.Sc. (hons.) in Advanced Materials and Processes from the Friedrich-Alexander-University of Erlangen-Nu¨rnberg, Germany. He is currently a fourth year Ph.D. student in the Laboratory of Process Technology at the University of Freiburg, Germany under the supervision of Prof. Bastian E. Rapp. His research focuses on liquid metals, microfluidic devices, MEMS and 3D printing.

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Laplace Pressure Tuned Liquid-Metal Non-Spherical Micro-Droplet (Plug) Generator

Wednesday, 14 December 2022 at 17:30

Add to Calendar ▼2022-12-14 17:30:002022-12-14 18:30:00Europe/LondonLaplace Pressure Tuned Liquid-Metal Non-Spherical Micro-Droplet (Plug) GeneratorPoint-of-Care and Rapid Diagnostics 2022 in Long Beach, CaliforniaLong Beach,

Gallium-based liquid metal non-spherical droplets (plugs) are fascinating materials owing to their exceptionally high surface tension (~600-700 mN m-1), low viscosity (twice that of water), negligible vapor pressure and high electrical conductivity (~3.4 × 106 S m-1), and have seen applications in microfluidics, microelectromechanical systems (MEMS), micro-actuators, switches, valves, radio-frequency and reconfigurable devices, and sensor technology. Typically, flow-focusing devices or manual injection inside narrow channels are the techniques used to generate liquid metal plugs. However, plug size control and reproducibility of the plugs is a major challenge hampering the use of such plugs. We developed a plug generator with a channel which includes chambers and constrictions that are optimally designed by tuning their respective Laplace pressures. We show that by having a chamber with lower Laplace pressure compared to a constriction exerting higher Laplace pressure, the liquid metal will be forced to fill the chamber than the constriction. We further presented liquid metal plugs of various aspect ratios for channel widths of 0.5, 0.8 and 1 mm with constriction width of 0.1 mm. This method allows control over liquid-metal plug size, reproducibility and provides a reliable way to generate plugs directly on-chip and on-demand for microfluidic applications.

Add to Calendar ▼2022-12-12 00:00:002022-12-14 00:00:00Europe/LondonPoint-of-Care and Rapid Diagnostics 2022Point-of-Care and Rapid Diagnostics 2022 in Long Beach, CaliforniaLong Beach,