Control of Wettability Using Regularly Ordered Two-Dimensional Polymeric Wavy Substrates

다국어 초록 (Multilingual Abstract)

Two-dimensional poly(dimethylsiloxane) (PDMS) films with wavy patterns were studied in order to investigate reversible and irreversible wetting effects. Pre-strained, surface oxidized layers of PDMS were used to form relieved wavy geometries, on which hydrophobic functionalization was carried out in order to produce irreversible wetting effects. Wavy-patterned PDMS films showed time-dependent reversible wetting effects. The degree of surface wettability could be tuned by the choice of wavy groove geometries. And the groove geometries were controlled via O2 plasma treatment and mechanical pre-straining. The pre-strained, buckled PDMS films were applied to the fabrication of hydrophobic polystyrene nano-patterns using colloidal self-assembly, where the colloids were arrayed in two-dimensional way. The wavy polystyrene films were found to be more hydrophobic relative to flat polystyrene films. The grooving methodology used in this study could be applied to enhancing the hydrophobicity of other types of polymeric thin films, eliminating the need for chemical treatment.

참고문헌 (Reference)

1 Y. Zhu, 6 : 15078-, 2014

2 Y. B. Pyun, 20 : 5136-, 2010

3 Y. Li, 23 : 9785-, 2007

4 D. K. Yi, 28 : 169-, 2006

5 L. Feng, 41 : 1221-, 2002

6 L. Li, 29 : 1702517-, 2017

7 V. Pandiyarasan, 418 : 352-, 2017

8 Y. Wang, 31 : 4672-, 2010

9 T. Zhu, 9 : 10224-, 2017

10 T. S. Kustandi, 17 : 2211-, 2007

11 X. -M. Li, 36 : 1350-, 2007

12 J. P. Youngblood, 32 : 6800-, 1999

13 W. Chen, 15 : 3395-, 1999

14 K. K. S. Lau, 3 : 1701-, 2003

15 J. Hong, 19 : 4364-, 2007

16 G. Zhang, 21 : 9143-, 2005

17 T. Sun, 357 : 357-, 2004

18 S. Wang, 46 : 3915-, 2007

19 J. T. Han, 126 : 4796-, 2004

20 L. Gao, 23 : 3762-, 2007

21 R. N. Wenzel, 28 : 988-, 1936

22 A. B. D. Cassie, 40 : 546-, 1944

23 M. K. Kim, 26 : 7552-, 2010

24 K. H. Cheong, 8 : 810-, 2009

25 D. -Y. Khang, 311 : 208-, 2006

26 D. -Y. Khang, 8 : 124-, 2008

27 Y. Xia, 37 : 551-, 1998

28 N. Bowden, 393 : 146-, 1998

29 W. T. S. Huck, 16 : 3497-, 2000

30 M. H. Kim, 20 : 457-, 2008

31 D. K. Yi, 94 : 084104-, 2009

32 Ned Bowden, 75 : 2557-, 1999