Dynamic Wetting and a Novel Method to Manipulate a Small Droplet

• Project/Area Number: 20560165
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Osaka City University
• Principal Investigator: KATOH Kenji Osaka City University, 大学院・工学研究科, 教授 (10177438)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 表面張力 / 動的ぬれ / 接触角 / 毛細管 / 液滴 / Microfluidics / 表面・界面物性 / マイクロマシン

Research Abstract

The dynamic wetting was investigated to discuss the behavior of liquid column in a capillary tube. The dynamic contact angles were precisely measured for various experimental conditions. The movement of the liquid column was described well by the theoretical results in which the measured contact angles were used in corrected Lucas-Washburn equation. A new method was proposed to actuate a droplet on a plate. Supersonic vibration was given to the SAMs plate to reduce the contact angle hysteresis and laser beam was spotted on the contact line of the droplet to improve the wettability between the plate. The droplet can be actuated in the direction of the end of the beam spot.

Research Products

• [Journal Article] 超音波振動およびレーザーを用いた固体面上の液滴の駆動に関する研究 (2010)
  • Author(s): 加藤・脇本・増田
  • Journal Title: 日本機械学会論文集B編 Vol.76 Pages: 2135-2142
  • Peer Reviewed
• [Journal Article] 傾斜平板法および光学手法を組み合わせた接触角の精密測定 (2010)
  • Author(s): 加藤・脇本・住谷
  • Journal Title: 日本機械学会論文集B編 Vol.76 Pages: 1508-1515
  • Peer Reviewed
• [Journal Article] Bubble Formation from an Air Jet Injected into a Turbulent Boundary Layer (On a Single Bubble) (2010)
  • Author(s): K. KATOH, T. WAKIMOTO
  • Journal Title: J.Fluid Sci.Tech. Vol.5 Pages: 528-541
  • NAID: 130000427359
  • Peer Reviewed
• [Journal Article] On the Sliding and Profile of a Liquid Droplet on a Rotating Disk (2010)
  • Author(s): K. KATOH, M. HIGASHINE, T. WAKIMOTO, R. MASUDA
  • Journal Title: Heat Transfer-Asian Research Vol.39 Pages: 59-75
  • Peer Reviewed
• [Journal Article] A Study on Capillary Flow under the Effect of Dynamic Wetting (2010)
  • Author(s): K. KATOH, T. WAKIMOTO, S. NITTA
  • Journal Title: Journal of JSEM Vol.10(Special Issue) Pages: 62-66
  • NAID: 10026708159
  • Peer Reviewed
• [Journal Article] キャピラリージェット形状を利用した動的表面張力の測定法(第2報,動的表面張力の測定) (2010)
  • Author(s): 脇本・加藤・谷
  • Journal Title: 日本機械学会論文集B編 Vol.76 Pages: 500-507
  • Peer Reviewed
• [Journal Article] 超音波振動およびレーザーを用いた固体面上の液滴の駆動に関する研究 (2010)
  • Author(s): 加藤健司, 脇本辰郎, 増田良平
  • Journal Title: 日本機械学会論文集B編 Volume: 76 Pages: 2135-2142
  • Peer Reviewed
• [Journal Article] 傾斜平板法および光学手法を組み合わせた接触角の精密測定 (2010)
  • Author(s): 加藤健司, 脇本辰郎, 住谷真宏
  • Journal Title: 日本機械学会論文集B編 Volume: 76 Pages: 1508-1515
  • Peer Reviewed
• [Journal Article] キャピラリージェット形状を利用した動的表面張力の測定法(第1報,噴流形状の理論的解析) (2009)
  • Author(s): 加藤・脇本・谷
  • Journal Title: 日本機械学会論文集B編 Vol.75 Pages: 1420-1427
  • Peer Reviewed
• [Journal Article] 球下端に付着した液滴の落下体積 (2009)
  • Author(s): 加藤・伊與田・井上・辻野
  • Journal Title: 日本機械学会論文集B編 Vol.75 Pages: 1503-1509
  • Peer Reviewed
• [Journal Article] 垂直円柱壁面に付着した液滴の転落体積 (2009)
  • Author(s): 西田・加藤・脇本
  • Journal Title: 日本機械学会論文集B編 Vol.75 Pages: 2273-2279
  • Peer Reviewed
• [Journal Article] 傾斜平板上の液滴の転落機構(液滴の転落体積) (2009)
  • Author(s): 加藤・西田・東根
  • Journal Title: 日本機械学会論文集B編 Vol.75 Pages: 1135-1142
  • Peer Reviewed
• [Journal Article] 回転円盤上の液滴の挙動に関する研究 (2009)
  • Author(s): 加藤健司, 他3名
  • Journal Title: 日本機械学会論文集,B編 75 Pages: 796-803
  • Peer Reviewed
• [Journal Article] 垂直円柱壁面に付着した液滴の転落体積 (2009)
  • Author(s): 西田達史, 加藤健司, 脇本辰郎
  • Journal Title: 日本機械学会論文集,B編 75 Pages: 2273-2279
  • Peer Reviewed
• [Journal Article] Profiles of Liquid Droplets on Solid Plates in Gravitational and Centrifugal Fields, M. HIGASHINE (2008)
  • Author(s): K. KATOH, T. WAKIMOTO, T. AZUMA
  • Journal Title: Journal of JSEM Vol.8(Special Issue) Pages: 49-54
  • Peer Reviewed
• [Journal Article] Profiles of Liquid Droplets on Solid Plates in Gravitational and Centrifugal Fields (2008)
  • Author(s): M. Higashine
  • Journal Title: Journal of Japan Society of Experimental Mechanics 8 Pages: 49-54
  • Peer Reviewed
• [Presentation] Characteristics of Liquid Film Flowing around Side Wall of a Horizontal Circular Cylinder (Separation of Liquid Film) (2010)
  • Author(s): 加藤健司
  • Organizer: 5th Int. Symposium on Advanced Science and Technology in Experimental Mechanics
  • Place of Presentation: 京都市,龍谷大学
  • Year and Date: 2010-11-06
• [Presentation] Characteristics of Liquid Film Flowing around Side Wall of a Horizontal Circular Cylinder (Separation of Liquid Film) (2010)
  • Author(s): K.Katoh
  • Organizer: 5^<th> Int.Symposium on Advanced Science and Technology in Experimental Mechanics
  • Place of Presentation: 京都市,龍谷大学
  • Year and Date: 2010-11-06
• [Presentation] Bubble Formation from an Air Jet Injected into a Turbulent Boundary Layer (2010)
  • Author(s): 加藤健司
  • Organizer: Int.Conf.on Jets, Wakes and Separated Flows
  • Place of Presentation: Cincinnati, Ohio, USA
  • Year and Date: 2010-09-29
• [Presentation] Bubble Formation from an Air Jet Injected into a Turbulent Boundary Layer (2010)
  • Author(s): K.Katoh
  • Organizer: Int.Conf.on Jets, Wakes and Separated Flows
  • Place of Presentation: Cincinnati, Ohio, USA(招待講演)
  • Year and Date: 2010-09-29
• [Presentation] New Optical Method to Measure Slight Difference of Contact Angle (2009)
  • Author(s): T. Wakimoto, K.Katoh
  • Organizer: 4th Int.Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2009-11-30
• [Presentation] New Optical Method to Measure Slight Difference of Contact Angle (2009)
  • Author(s): T.Wakimoto
  • Organizer: 4th Int. Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2009-11-30
• [Presentation] A Study on Capillary Flow under the Effect of Dynamic Wetting (2009)
  • Author(s): S. Nitta, K.Katoh
  • Organizer: 4th Int.Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2009-11-29
• [Presentation] A Study on Capillary Flow under the Effect of Dynamic Wetting (2009)
  • Author(s): S.Nitta
  • Organizer: 4th Int. Symposium on Advanced Fluid/Solid Science and Technology in Experimental Mechanics
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2009-11-29
• [Presentation] 垂直円柱壁面に付着した液滴の転落機構 (2009)
  • Author(s): 西田達史, 加藤健司
  • Organizer: 日本機械学会関西支部定時総会講演会
  • Place of Presentation: 近畿大学
  • Year and Date: 2009-03-17
• [Presentation] 球下端に付着した液滴の落下体積 (2008)
  • Author(s): 加藤健司
  • Organizer: 日本混相流学会年会講演会
  • Place of Presentation: 会津大学
  • Year and Date: 2008-08-05
• [Book] 実験力学ハンドブック(松井・井口・横山編) (2008)
  • Author(s): 加藤, 他98名
  • Publisher: 朝倉書店