title: Biomimetic multifunctional nanochannels based on the asymmetric wettability of heterogeneous nanowire membranes.
abstract: A charged heterogeneous nanowire membrane with asymmetric wettability serves as a biomimetic passive channel when the bilayer is hydrophilic; It also functions as pH valve based on the hydrophobic CaWO4 layer (contact angle of 145.3˚±0.3˚) and hydrophilic MnO2 layer. Moreover, a reversible ionic rectification is realized in the above-mentioned semi-hydrophobic and hydrophilic state with strong acid environment or in the complete hydrophobic stage with a moderate discrepancy (CA of CaWO4 and MnO2 layer are 141.3˚±0.3˚ and 157.6˚±2.0˚, respectively) in near neuter condition.
authors.affiliation: Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
authors.forename: Jingchao
authors.initials: J
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Zhicheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Wang
authors.forename: Xun
authors.initials: X
authors.lastname: Wang
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D057927:Hydrophobic and Hydrophilic Interactions; D017895:Manganese Compounds / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D017973:Tungsten Compounds / Q000737:chemistry; D017155:Wettability
chemical_list: D001672:Biocompatible Materials; D017610:Calcium Compounds; D017895:Manganese Compounds; D010087:Oxides; D017973:Tungsten Compounds; C027424:manganese oxide; C018858:calcium tungstate
keywords: asymmetric wettability; nanofluidic channels; nanowire membrane; rectification; switch