摘要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.
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.
YAO Can;WANG Yu-Ren;LAN Ding;DUAN Li;KANG Qi. An in-situ Observation on Initial Aggregation Process of Colloidal Particles near Three-Phase Contact Line of Air, Water and Vertical Substrate[J]. 中国物理快报, 2008, 25(10): 3811-3814.
YAO Can, WANG Yu-Ren, LAN Ding, DUAN Li, KANG Qi. An in-situ Observation on Initial Aggregation Process of Colloidal Particles near Three-Phase Contact Line of Air, Water and Vertical Substrate. Chin. Phys. Lett., 2008, 25(10): 3811-3814.
[1] Denkov N D, Velev O D, Kralchevsky P A, Ivanov I B,Yoshimura H and Nagayama K 1993 Nature 361 26 [2] Velev O D, Jede T A, Lobo R F and Lenhoff A M 1997 Nature 389 447 [3] Wijnhoven J E G J and Vos W L 1998 Science 281802 [4] Holland B T, Blanford C F and Stein A, 1998 Science 281 538 [5] Velev O D, Tessier P M, Lenhoff A M and Kaler E W 1999 Nature 401 548 [6] Dimitrov A S and Nagayama K 1996 Langmuir 121303 [7] Ye Y H, LeBlanc F and Hache A and Truong W 2001 Appl.Phys. Lett. 78 52 [8] Zhong Z G, Akira F and Osamu S 2002 Chem. Mater. 14 760 [9] Zeng Y and Harrison D J 2007 Anal. Chem. 792289 [10] Garcia P D, Sapienza R, Blanco A, Lopez C 2007 Adv.Mater. 19 2597 [11] Tsukruk V V, Ko H and Peleshanko S 2004 Phys. Rev.Lett. 92 065502 [12] Vyawahare S, Craig K M and Scherer A 2006 NanoLett. 6 271 [13] Kralchevsky P A and Nagayama K 1994 Langmuir 10 23 [14] Denkov N D, Velev O D, Kralchevsky P A, Ivanov I B,Yoshimura H and Nagayama K 1992 Langmuir 8 3183 [15] Dushkin C D, Kralchevsky P A, Yoshimura H and Nagayama K1995 Phys. Rev. Lett. 75 3454 [16] Dushkin C D, Kralchevsky P A, Paunov V N and Yoshimura H1996 Langmuir 12 641 [17] Velev O D, Denkov N D, Paunov V N, Kralchevsky P A andNagayama K 1993 Langmuir 9 3702 [18] Zheng Z Y, Liu X Y, Luo Y H, Cheng B Y, Zhang D Z, Meng QB and Wang Y R 2007 Appl. Phys. Lett. 90 051910 [19] Meng L L, Wei H, Nagel A, Wiley B J, Scriven L E andNorris D J 2006 Nano Lett. 6 2249 [20] Lozano G and Miguez H 2007 Langmuir 23 9933 [21] Paunov V N, Kralchevsky P A, Denkov N D, Ivanov L B andNagayama K 1992 Colloids and Surfaces 67 119 [22] Kralchevsky P A, Paunov V N, Denkov N D and Nagayama K1994 J. Colloid Interf. Sci. 167 47 [23] Kralchevsky P A, Paunov V N, Denkov N D and Nagayama K1994 J. Colloid Interf. Sci. 167 66
2008, Vol. 25 
