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Superhydrophobic Tracks for Low‐Friction, Guided Transport of Water Droplets

2011; Volume: 23; Issue: 26 Linguagem: Inglês

10.1002/adma.201100461

1521-4095

Henrikki Mertaniemi, Ville Jokinen, Lauri Sainiemi, Sami Franssila, Abraham Marmur, Olli Ikkala, Robin H. A. Ras,

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Advanced MaterialsVolume 23, Issue 26 p. 2911-2914 Communication Superhydrophobic Tracks for Low-Friction, Guided Transport of Water Droplets Henrikki Mertaniemi, Henrikki Mertaniemi Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Search for more papers by this authorVille Jokinen, Ville Jokinen Department of Materials Science and Engineering, Aalto University (formerly Helsinki University of Technology), Vuorimiehentie 2, FI-02150 Espoo, FinlandSearch for more papers by this authorLauri Sainiemi, Lauri Sainiemi Division of Pharmaceutical Chemistry, University of Helsinki, Viikinkaari 5E, FI-00790 Helsinki, FinlandSearch for more papers by this authorSami Franssila, Sami Franssila Department of Materials Science and Engineering, Aalto University (formerly Helsinki University of Technology), Vuorimiehentie 2, FI-02150 Espoo, FinlandSearch for more papers by this authorAbraham Marmur, Abraham Marmur Department of Chemical Engineering, Technion – Israel Institute of Technology, 32000 Haifa, IsraelSearch for more papers by this authorOlli Ikkala, Olli Ikkala Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Search for more papers by this authorRobin H. A. Ras, Corresponding Author Robin H. A. Ras [email protected] Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland.Search for more papers by this author Henrikki Mertaniemi, Henrikki Mertaniemi Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Search for more papers by this authorVille Jokinen, Ville Jokinen Department of Materials Science and Engineering, Aalto University (formerly Helsinki University of Technology), Vuorimiehentie 2, FI-02150 Espoo, FinlandSearch for more papers by this authorLauri Sainiemi, Lauri Sainiemi Division of Pharmaceutical Chemistry, University of Helsinki, Viikinkaari 5E, FI-00790 Helsinki, FinlandSearch for more papers by this authorSami Franssila, Sami Franssila Department of Materials Science and Engineering, Aalto University (formerly Helsinki University of Technology), Vuorimiehentie 2, FI-02150 Espoo, FinlandSearch for more papers by this authorAbraham Marmur, Abraham Marmur Department of Chemical Engineering, Technion – Israel Institute of Technology, 32000 Haifa, IsraelSearch for more papers by this authorOlli Ikkala, Olli Ikkala Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Search for more papers by this authorRobin H. A. Ras, Corresponding Author Robin H. A. Ras [email protected] Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland, http://tfy.tkk.fi/molmat/Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), Puumiehenkuja 2, FI-02150 Espoo, Finland.Search for more papers by this author First published: 29 April 2011 https://doi.org/10.1002/adma.201100461Citations: 196Read 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 Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Graphical Abstract We demonstrate a simple yet efficient approach for droplet transport, in which the droplet is moving on a superhydrophobic surface, using gravity or electrostatic forces as the driving force for droplet transportation and using tracks with vertical walls as gravitational potential barriers to design trajectories. We further demonstrate splitting of a droplet using a superhydrophobic knife, and drop-size selection using superhydrophobic tracks with a local widening. 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 adma_201100461_sm_movie1.mp4760.3 KB movie1 adma_201100461_sm_movie2.mp4272 KB movie2 adma_201100461_sm_movie3.mp41.9 MB movie3 adma_201100461_sm_movie4.mp4494.8 KB movie4 adma_201100461_sm_movie5.mp45 MB movie5 adma_201100461_sm_movie6.mp4197.7 KB movie6 adma_201100461_sm_suppl.pdf379.3 KB suppl 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. References 1 F. Xia, L. Jiang, Adv. Mater. 2008, 20, 2842. 10.1002/adma.200800836 CASWeb of Science®Google Scholar 2 J. Genzer, A. Marmur, MRS Bull. 2008, 33, 742. 10.1557/mrs2008.159 CASWeb of Science®Google Scholar 3 D. Quéré, Ann. Rev. Mater. Res. 2008, 38, 71. 10.1146/annurev.matsci.38.060407.132434 CASWeb of Science®Google Scholar 4 T. Verho, C. Bower, P. Andrew, S. Franssila, O. Ikkala, R. H. A. Ras, Adv. 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