title: Femtosecond laser controlled wettability of solid surfaces.
abstract: Femtosecond laser microfabrication is emerging as a hot tool for controlling the wettability of solid surfaces. This paper introduces four typical aspects of femtosecond laser induced special wettability: superhydrophobicity, underwater superoleophobicity, anisotropic wettability, and smart wettability. The static properties are characterized by the contact angle measurement, while the dynamic features are investigated by the sliding behavior of a liquid droplet. Using different materials and machining methods results in different rough microstructures, patterns, and even chemistry on the solid substrates. So, various beautiful wettabilities can be realized because wettability is mainly dependent on the surface topography and chemical composition. The distinctions of the underlying formation mechanism of these wettabilities are also described in detail.
authors.affiliation: Key Laboratory of Photonics Technology for Information of Shaanxi Province & State Key Laboratory for Manufacturing System Engineering, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China. chenfeng@mail.xjtu.edu.cn yangqing@mail.xjtu.edu.cn.
authors.forename: Jiale
authors.initials: J
authors.lastname: Yong
authors.affiliation: Key Laboratory of Photonics Technology for Information of Shaanxi Province & State Key Laboratory for Manufacturing System Engineering, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China. chenfeng@mail.xjtu.edu.cn yangqing@mail.xjtu.edu.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.affiliation: Key Laboratory of Photonics Technology for Information of Shaanxi Province & State Key Laboratory for Manufacturing System Engineering, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China. chenfeng@mail.xjtu.edu.cn yangqing@mail.xjtu.edu.cn.
authors.forename: Qing
authors.initials: Q
authors.lastname: Yang
authors.affiliation: Key Laboratory of Photonics Technology for Information of Shaanxi Province & State Key Laboratory for Manufacturing System Engineering, School of Electronics & Information Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China. chenfeng@mail.xjtu.edu.cn yangqing@mail.xjtu.edu.cn.
authors.forename: Xun
authors.initials: X
authors.lastname: Hou
mesh_terms: D057927:Hydrophobic and Hydrophilic Interactions; D007834:Lasers; D008855:Microscopy, Electron, Scanning; D009821:Oils / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry*; D017155:Wettability
chemical_list: D009821:Oils; D014867:Water