“Lock‐and‐Key” Geometry Effect of Patterned Surfaces: Wettability and Switching of Adhesive Force

SmallVolume 5, Issue 1 p. 90-94 Communication "Lock-and-Key" Geometry Effect of Patterned Surfaces: Wettability and Switching of Adhesive Force† Xing-Jiu Huang, Corresponding Author Xing-Jiu Huang [email protected] Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea).Search for more papers by this authorDong-Haan Kim, Dong-Haan Kim 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorMaesoon Im, Maesoon Im Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorJoo-Hyung Lee, Joo-Hyung Lee 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorJ.-B. Yoon, J.-B. Yoon 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorYang-Kyu Choi, Corresponding Author Yang-Kyu Choi [email protected] Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea).Search for more papers by this author Xing-Jiu Huang, Corresponding Author Xing-Jiu Huang [email protected] Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea).Search for more papers by this authorDong-Haan Kim, Dong-Haan Kim 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorMaesoon Im, Maesoon Im Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorJoo-Hyung Lee, Joo-Hyung Lee 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorJ.-B. Yoon, J.-B. Yoon 3D Micro-Nano Structures Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Search for more papers by this authorYang-Kyu Choi, Corresponding Author Yang-Kyu Choi [email protected] Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea)Nano-Oriented Bio-Electronic Lab School of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon, 305-701 (South Korea).Search for more papers by this author First published: 07 January 2009 https://doi.org/10.1002/smll.200800649Citations: 100 † X.-J.H. would like to express appreciation for the financial support of the Brain Korea 21 project, the school of Information Technology, and the Korea Advanced Institute of Science and Technology in 2007. This work was also partially supported by the NRL program of the Korea Science and Engineering Foundation grant funded by the Korea government (MOST) (No.R0A-2007-000-20028-0). Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Graphical Abstract A new type of "lock-and-key" patterned surface consisting of dense arrays of microfabricated PDMS lens and bowl arrays (see image) without silanization for the wettability and switching of adhesive forces is presented. The microlens-arrayed surface (lock) shows a low contact angle and a high adhesive force following the Wenzel state, whilst the imprinted microbowl-arrayed surfaces (key), which were replicas of the microlenses, exhibit a high contact angle and an anti-adhesive behavior following the Cassie–Baxter state. Citing Literature Supporting Information Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Filename Description smll_200800649_sm_supplfigs.pdf146.5 KB supplfigs Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume5, Issue1January 2009Pages 90-94 RelatedInformation