| Title |
Fabrication of Hydrophilic Poly(dimethylsiloxane)with Periodic Wrinkling Surface and Its Application |
| Authors |
이동국(Lee, Dong-Guk) ; 오창규(Oh, Chang-Kyu) ; 양승호(Yang, Sung-Ho) ; 한승진(Han, Seung-Jin) ; 정옥찬(Jeong, Ok-Chan) |
| DOI |
https://doi.org/10.5370/KIEE.2014.63.5.671 |
| Keywords |
Hydrophilic ; Cell spreading ; Cell adhesion ; PDMS ; Wrinkling |
| Abstract |
This paper presents a fabrication of hydrophilic Poly(dimethylsiloxane) (PDMS) with periodic wrinkling surface. The proposed periodic wrinkling surface was fabricated using the sequential processes of typical curing process of PDMS, cutting process, platinum deposition process, and wrinkling transfer process. The surface morphology of the fabricated wrinkling surface was observed by using optical and dynamic atomic force microscopy and discussed. The measured period and amplitude of wrinkling was about 2.2μm and 0.31μm, respectively. And, the contact angles of water droplets on the wrinkled surface were measured in order to understand effect of the wrinkling surface on surface modification of hydrophobic PDMS. Our new finding was that the proposed wrinkling surface was hydrophilic and the measured contact angle was about 62°. Moreover, it was found out from the simple cell culture test that the fabricated wrinkling surface was more effective for cell spreading and adhesion than the case of native PDMS substrate. |