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Light has momentum, a fact that has been known since Kepler observed that the tails of comets did not point retrograde to their motion as was expected, rather they pointed away from the sun regardless of their direction of travel. In 1970, Arthur Ashkin, who would go on to win the Nobel Prize for this work, was able to trap dielectric particles smaller than 1 micron in diameter using a simple objective lens to tightly focus a laser beam.
We propose dielectrophoretic force driven coalescence of droplets having equal or non‐equal sizes with an electrode base actuation system over a solid surface. Coupled electro‐hydrodynamic conservation equations are solved to simulate the phenomenon based on finite volume scheme. Volume of fluid technique is used to capture the interface. Electric potential and dissimilarity index are varied to comprehend the coalescence dynamics.
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