title: High Current Ionic Diode Using Homogeneously Charged Asymmetric Nanochannel Network Membrane.
abstract: A high current ionic diode is achieved using an asymmetric nanochannel network membrane (NCNM) constructed by soft lithography and in situ self-assembly of nanoparticles with uniform surface charge. The asymmetric NCNM exhibits high rectified currents without losing a rectification ratio because of its ionic selectivity gradient and differentiated electrical conductance. Asymmetric ionic transport is analyzed with diode-like I-V curves and visualized via fluorescent dyes, which is closely correlated with ionic selectivity and ion distribution according to variation of NCNM geometries.
authors.affiliation: Department of Mechanical Engineering, Sogang University , 35 Baekbeom-ro (Sinsu-dong), Mapo-gu, Seoul 121-742, Korea.
authors.forename: Eunpyo
authors.initials: E
authors.lastname: Choi
authors.affiliation: Department of Mechanical Engineering, Sogang University , 35 Baekbeom-ro (Sinsu-dong), Mapo-gu, Seoul 121-742, Korea.
authors.forename: Cong
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Mechanical Engineering, Sogang University , 35 Baekbeom-ro (Sinsu-dong), Mapo-gu, Seoul 121-742, Korea.
authors.forename: Gyu Tae
authors.initials: GT
authors.lastname: Chang
authors.affiliation: Department of Mechanical Engineering, Sogang University , 35 Baekbeom-ro (Sinsu-dong), Mapo-gu, Seoul 121-742, Korea.
authors.forename: Jungyul
authors.initials: J
authors.lastname: Park
keywords: Ionic diode; high current; ion selectivity; nanoparticle; self-assembly