Chin. Phys. Lett.  2008, Vol. 25 Issue (10): 3811-3814    DOI:
Original Articles |
An in-situ Observation on Initial Aggregation Process of Colloidal Particles near Three-Phase Contact Line of Air, Water and Vertical Substrate
YAO Can, WANG Yu-Ren, LAN Ding, DUAN Li, KANG Qi
National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190
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YAO Can, WANG Yu-Ren, LAN Ding et al  2008 Chin. Phys. Lett. 25 3811-3814
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Abstract The self-assembling process near the three-phase contact line of air, water and vertical substrate is widely used to produce various kinds of nanostructured materials and devices. We perform an in-situ observation on the self-assembling process in the vicinity of the three phase contact line. Three kinds of aggregations, i.e. particle--particle aggregation, particle--chain aggregation and chain--chain aggregation, in the initial stage of vertical deposition process are revealed by our experiments. It is found that the particle--particle aggregation and the particle--chain aggregation can be qualitatively explained by the theory of the capillary immersion force and mirror image force, while the chain--chain aggregation leaves an opening question for the further studies. The present study may provide more deep insight into the self-assembling process of colloidal particles.
Keywords: 82.70.Dd      81.15.-z      83.20.Bg     
Received: 06 May 2008      Published: 26 September 2008
PACS:  82.70.Dd (Colloids)  
  81.15.-z (Methods of deposition of films and coatings; film growth and epitaxy)  
  83.20.Bg  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I10/03811
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YAO Can
WANG Yu-Ren
LAN Ding
DUAN Li
KANG Qi
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