mbnu FY2021 Annual Report 3.1.5 A
Fig. 5: A typical dispensing process. (A) A liquid bridge of height H connecting the nozzle of radius Rn and the substrate. (B) Retracting the nozzle to a height H >> Hc above the critical height Hc destabilizes the liquid bridge and causes it to thin under surface tension. (C) For viscoelastic liquid bridges, nozzle retraction creates satellite droplets and a long capillary tail, which may contaminate the substrate. (D) By applying torsion to a stable viscoelastic liquid bridge, an indent propagates toward the bridge center, leading to breakup even at H < Hc.
Date:
15 March 2024
Copyright OIST (Okinawa Institute of Science and Technology Graduate University, 沖縄科学技術大学院大学). Creative Commons Attribution 4.0 International License (CC BY 4.0).
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