Asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes modulating ionic transport for highly efficient light-gating device
Bioinspired artificial asymmetric nanochannels for more precise controls of ion transport and ion pump at the nanometer scale have been attracting some attention for extensive application in biosensors, ions separation technologies, nanofluidic diodes and energy device. Herein, we construct the firs...
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| Veröffentlicht in: | Electrochimica acta 2019-09, Vol.316, p.266-272 |
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| container_title | Electrochimica acta |
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| creator | Xu, Yanglei Lu, Bingxin Fu, Lulu Zhai, Jin |
| description | Bioinspired artificial asymmetric nanochannels for more precise controls of ion transport and ion pump at the nanometer scale have been attracting some attention for extensive application in biosensors, ions separation technologies, nanofluidic diodes and energy device. Herein, we construct the first asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes based on the introduction of physical structures and chemical surface activity. Due to asymmetric chemically deposited coatings and surface charges distribution, the SiO2/Al2O3 nanofluidic diodes are capable of regulating ion transport selectivity and possessing ionic current rectification properties. These asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes are further introduced spiropyran into nanochannels to create a lightgating device, which were triggered by ultraviolet light to be “ON” state from the neutral spiropyran blocked “OFF” state. This asymmetric heterostructured SiO2/Al2O3 nanofluidic diode epitomizes high sensitivity, fine selectivity, superior stability and highly reversibility. The combination with photoswitchable compounds spiropyrans shows great promise for easy application in the optical device such as highly sensitive light gating devices. |
| doi_str_mv | 10.1016/j.electacta.2019.05.084 |
| format | Article |
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Herein, we construct the first asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes based on the introduction of physical structures and chemical surface activity. Due to asymmetric chemically deposited coatings and surface charges distribution, the SiO2/Al2O3 nanofluidic diodes are capable of regulating ion transport selectivity and possessing ionic current rectification properties. These asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes are further introduced spiropyran into nanochannels to create a lightgating device, which were triggered by ultraviolet light to be “ON” state from the neutral spiropyran blocked “OFF” state. This asymmetric heterostructured SiO2/Al2O3 nanofluidic diode epitomizes high sensitivity, fine selectivity, superior stability and highly reversibility. 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| ispartof | Electrochimica acta, 2019-09, Vol.316, p.266-272 |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Aluminum oxide Biosensors Chemical activity Diodes Fluidics Heterostructure Ion current rectification Ion transport Ions Light gating Nanochannels Nanofluidic diode Nanofluids Organic chemistry Selectivity Silicon dioxide Spiropyrans Ultraviolet radiation |
| title | Asymmetric heterostructured SiO2/Al2O3 nanofluidic diodes modulating ionic transport for highly efficient light-gating device |
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