Abstract：
The elegance and accuracy of biological ion channels inspire the fabrication of artificial devices with similar properties. Here, we report the fabrication of iontronic devices capable of delivering ions at the nanomolar (nmol) level of accuracy. The triangular nanofluidic device prepared with reconstructed vanadium pentoxide (VO) membranes of thickness 45 ± 5.5 μm can continuously deliver K+, Na+, and Ca2+ ions at the rate of 0.44 ± 0.24, 0.35 ± 0.06, and 0.03 nmol/min, respectively. The ionic flow rate can be further tuned by modulating the membrane thickness and salt concentration at the source reservoir. The triangular VO device can also deliver ions in minuscule doses (∼132 ± 9.7 nmol) by electrothermally heating (33 °C) with a nichrome wire (NW) or applying light of specific intensities. The simplicity of the fabrication process of reconstructed layered material-based nanofluidic devices allows the design of complicated iontronic devices such as the three-terminal-Ni-VO (3T-Ni-VO) devices.
摘要：
生物离子通道的优雅和准确性激发了具有类似特性的人造设备的制造。这里,我们报告了能够以纳摩尔（nmol）精度输送离子的离子电子器件的制造。用厚度为45±5.5μm的重构五氧化二钒(VO)膜制备的三角形纳米流体装置可以连续递送K+,Na+,和Ca2+离子的速率分别为0.44±0.24、0.35±0.06和0.03nmol/min，分别。离子流速可以通过调节源池的膜厚度和盐浓度来进一步调节。三角形VO设备还可以通过用镍铬合金线（NW）电热加热（33°C）或施加特定强度的光来输送最小剂量（〜132±9.7nmol）的离子。重建的基于层状材料的纳米流体装置的制造过程的简单性允许设计复杂的离子装置,例如三端Ni-VO(3T-Ni-VO)装置。
