Effect of Relaxation Time on Spin Coating Instability
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概要
- 論文の詳細を見る
The relaxation time affects significantly the radius of a drop relaxing before spin coating especially for the liquids of low viscosity. Even for a fixed volume of liquid and rotation speed, the initial film thickness and the corresponding rotational Reynolds number are all changed. Furthermore, the critical radius for the onset of rivulet instability is dramatically altered. In the previous study, we reported a "turning phenomenon" for the Coriolis effect: it destabilizes high Bond number flows and stabilizes low Bond number flows. However, a comparison among variations of critical radius with rotational Reynolds numbers for different relaxation times shows that it is not the Coriolis force but the effect of a disturbance in a spreading drop of a fluid of low viscosity that causes this "turning phenomenon".
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-08-25
著者
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Chou Fu-chu
Department Of Mechanical Engineering National Central University
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Lai Cheng-Chang
Department of Mechanical Engineering, National Central University, Jhongli, Taiwan 320, R.O.C.
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Lai Cheng-Chang
Department of Mechanical Engineering, National Central University, Jhongli 320, Taiwan
-
Chou Fu-Chu
Department of Mechanical Engineering, National Central University, Jhongli, Taiwan 320, R.O.C.
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- Visualization of the Effect of Liquid Dispensing Method during Spin Coating
- Cooling of Microspot by Microdroplets
- Effect of Relaxation Time on Spin Coating Instability
- Dynamic Contact Angle of Spreading Thin Film on a Rotating Disk
- Effect of Coriolis Force on Fingering Instability and Liquid Usage Reduction
- Effect of Wind Shear on the Film Thickness Distribution over Rotating Doughnut Disks
- Cooling of Microspot by Microdroplets