| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Capillary Forces between Submillimeter Spheres and Flat Surfaces at Constant Liquid Volumes |
| WANG Le-Feng, RONG Wei-Bin, SUN Li-Ning, CHEN Li-Guo, SHAO Bing |
| State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080 |
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| Cite this article: |
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WANG Le-Feng, RONG Wei-Bin, SUN Li-Ning et al 2009 Chin. Phys. Lett. 26 126801 |
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Abstract We investigate the capillary forces between submillimeter spheres and flat surfaces at constant liquid volumes theoretically and experimentally. An iterative method is used to estimate the capillary force with contact angles as the boundary conditions and the constant volume as a constraint. The theoretical analysis shows that the maximum capillary force between them decreases with the increase of the liquid bridge volume at small contact angles. The experimental results show that the force is smaller than the theoretical values at the initial separation distances. It is also observed that the force first increases and then decreases with an increasing separation distance in some cases. These phenomena of capillary forces hysteresis are explained according to the wetting hysteresis.
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| Keywords:
68.03.Cd
68.08.-p
47.55.Dr
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Received: 20 April 2009
Published: 27 November 2009
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| PACS: |
68.03.Cd
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(Surface tension and related phenomena)
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68.08.-p
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(Liquid-solid interfaces)
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47.55.dr
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(Interactions with surfaces)
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[1] Van Spengen W M, Puers R and Wolf I D 2002 J.Micromech. Microeng. 12 702
[2] Mastrangelo C H and Hsu C H 1993 J. Microelectromech.Syst. 2 33
[3] Hariri A, Zu J W and Mrad R B 2007 J.Microelectromech. Syst. 16 1276
[4] Feddema J T, Xavier P, and Brown R 2001 J.Micromechatron. 1 139
[5] Zhou Q, Aurelian A, Chang B, Corral C D and Koivo H N 2004 J. Micromechatron. 2 227
[6] Meniciassi A, Eisinberg A, Izzo I and Dario P 2004 IEEE/ASME Trans. Mechatron. 9 311
[7] Saito S, Motokado, Obata K J and Takahashi K 2005 Appl. Phys. Lett. 87 234103
[8] Grutzeck H and Kiesewetter L 2002 MicrosystemTechnol. 8 27
[9] Vasudev A and Zhe J 2008 Appl. Phys. Lett. 93103503
[10] Marmur A 1993 Langmuir 9 1922
[11] De Lazzer A, Dreyer M and Rath H J 1999 Langmuir 15 4551
[12] Malotky D L, Chaudhury M K 2001 Langmuir 177823
[13] Xiao X D and Qian L M 2000 Langmuir 16 8153
[14] Israelachvili J N 1992 Intermolecular and SurfaceForces (New York: Academic)
[15] Wei Z and Zhao Y P 2004 Chin. Phys. Lett. 21616
[16] Pakarinen O H, Foster A S, Paajanen M, Kalinainen T,Katainen J, Makkonen I, Lahtinen J and Nieminen R M 2005 Modelling Simul. Mater. Sci. Engin. 13 1175
[17] Chen S C, Lin J F 2008 J. Micromech. Microeng. 18 115006
[18] Obata K J, Motokado T, Saito S, and Takahashi K 2004 J. Fluid Mech. 498 113
[19] Rabinovich Y I, Esayanur M S and Moudgil B M 2005 Langmuir 21 10992 |
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