title: Multifunctional superamphiphobic TiO2 nanostructure surfaces with facile wettability and adhesion engineering.
abstract: Compared to conventional top-down photo-cleavage method, a facile bottom-up ink-combination method to in situ and rapidly achieve water wettability and adhesion transition, with a great contrast on the superamphiphobic TiO2 nanostructured film, is described. Moreover, such combination method is suitable for various kinds of superamphiphobic substrate. Oil-based ink covering or removing changes not only the topographical morphology but also surface chemical composition, and these resultant topographical morphology and composition engineering realize the site-selectively switchable wettability varying from superamphiphobicity to amphiphilicity, and water adhesion between sliding superamphiphobicity and sticky superamphiphobicity in micro-scale. Additionally, positive and negative micro-pattern can be achieved by taking advantage of the inherent photocatalytic property of TiO2 with the assistance of anti-UV light ink mask. Finally, the potential applications of the site-selectively sticky superamphiphobic surface were demonstrated. In a proof-of-concept study, the microdroplet manipulation (storage, moving, mixing, and transfer), specific gas sensing, wettability template for positive and negative ZnO patterning, and site-selective cell immobilization have been demonstrated. This study will give an important input to the field of advanced functional material surfaces with special wettability.
authors: National Engineering Laboratory of Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, P.R. China.
authors: Jian-Ying
authors: JY
authors: Huang
authors: Yue-Kun
authors: YK
authors: Lai
authors: Fei
authors: F
authors: Pan
authors: Lei
authors: L
authors: Yang
authors: Hui
authors: H
authors: Wang
authors: Ke-Qin
authors: KQ
authors: Zhang
authors: Harald
authors: H
authors: Fuchs
authors: Li-Feng
authors: LF
authors: Chi
mesh_terms: D016475:3T3 Cells; D000818:Animals; D016880:Anisotropy; D002448:Cell Adhesion; D005740:Gases; D008422:Materials Testing; D051379:Mice; D008855:Microscopy, Electron, Scanning; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties; D023822:Tissue Engineering / Q000379:methods; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry; D017155:Wettability; D015034:Zinc Oxide / Q000737:chemistry
chemical_list: D005740:Gases; D012997:Solvents; D014867:Water; C009495:titanium dioxide; D014025:Titanium; D015034:Zinc Oxide
keywords: TiO2; adhesion; patterning; superamphiphobicity/superamphiphilicity; wettability