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- W2899683393 abstract "Optical tweezers have been extensively used as a tool for trapping and manipulationof particles due to its versatility, ease of use and contactless manipulation ability. It hasvast research as well as industrial applications. Our interest lies in applications involvingthermo-optical tweezers; tweezers that use thermally driven flow fields mediated by laserinducedmicro-bubbles.This report give insights into two specific projects we performed involving the thermoopticaltweezers setup. The first project involves controlled lithography of soft-oxometalatematerials to create continuous patterns. We first describe an experimental apparatus involvingLock-in Amplifier that is capable of measuring small capacitance values (from afew μF to few pF) with good accuracy. We then use the patterning method to designmicro-capacitor patterns. This technique could be further used in the development of controlledprintable microelectronic circuits. The second project is motivated by our attemptto model the flow fields around thermo-optically induced micro-bubble(s) that has beenexperimentally observed by us. The flow in the system is mediated by the Marangoni effectarising due to a non-uniform temperature distribution in the system. We first describe asimpler problem involving colloidal particles having active boundary layers. We employtensorial spherical harmonics to solve the momentum equation. The flow fields have beenmapped and shown by vector field representation. We then describe our problem involvinglaser-induced micro-bubble(s) in a temperature field and deduce a model to solve for theslip-velocity field in the surrounding medium, with specific focus on a one-bubble systemand extend it for a two-bubble system. A brief overview of an ongoing project involving‘biochip’ microfabrication has also been stated." @default.
- W2899683393 created "2018-11-16" @default.
- W2899683393 creator A5004234852 @default.
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- W2899683393 date "2017-04-01" @default.
- W2899683393 modified "2023-09-22" @default.
- W2899683393 title "Microelectronics and Microhydrodynamicsusing Thermo-optically induced Microbubbles" @default.
- W2899683393 hasPublicationYear "2017" @default.
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