TAILIEUCHUNG - Báo cáo hóa học: " Wettability Switching Techniques on Superhydrophobic Surfaces"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Wettability Switching Techniques on Superhydrophobic Surfaces | Nanoscale Res Lett 2007 2 577-596 DOI S11671-007-9102-4 NANO REVIEW Wettability Switching Techniques on Superhydrophobic Surfaces Nicolas Verplanck Yannick Coffinier Vincent Thomy Rabah Boukherroub Received 27 June 2007 Accepted 22 October 2007 Published online 13 November 2007 to the authors 2007 Abstract The wetting properties of superhydrophobic surfaces have generated worldwide research interest. A water drop on these surfaces forms a nearly perfect spherical pearl. Superhydrophobic materials hold considerable promise for potential applications ranging from self cleaning surfaces completely water impermeable textiles to low cost energy displacement of liquids in lab-on-chip devices. However the dynamic modification of the liquid droplets behavior and in particular of their wetting properties on these surfaces is still a challenging issue. In this review after a brief overview on superhydrophobic states definition the techniques leading to the modification of wettability behavior on superhydrophobic surfaces under specific conditions optical magnetic mechanical chemical thermal are discussed. Finally a focus on electrowetting is made from historical phenomenon pointed out some decades ago on classical planar hydrophobic surfaces to recent breakthrough obtained on superhydrophobic surfaces. Keywords Microfluidic Superhydrophobic surfaces Wettability switching Electrowetting N. Verplanck Y. Coffinier V. Thomy El R. Boukherroub Institut d Electronique de Microelectronique et de Nanotechnologie IEMN UMR 8520 Cite Scientifique Avenue Poincare . 60069 59652 Villeneuve d Ascq France e-mail Y. Coffinier R. Boukherroub Institut de Recherche Interdisciplinaire IRI FRE 2963 Cite Scientifique Avenue Poincare . 60069 59652 Villeneuve d Ascq France Introduction Biological surfaces like lotus leaves exhibit the amazing property for not being wetted by water leading to a self cleaning effect. The lotus leaves capability to remain

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