Ionic conductance oscillations in sub-nanometer pores probed by optoelectronic control
Ionic conductance oscillations in sub-nanometer pores probed by optoelectronic control
复制标题
光电控制探测亚纳米孔隙中的离子电导振荡
DOI:
10.1016/j.matt.2021.05.017
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发表时间:
2020
期刊:
影响因子:
18.9
通讯作者:
Jiandong Feng
中科院分区:
文献类型:
--
作者:
Fanfan Chen;Zonglin Gu;Chunxia Zhao;Yuang Chen;Xiaowei Jiang;Zhi;Yuxian Lu;R. Zhou;Jiandong Feng
Ionic Coulomb blockade is one of the ion transport phenomena revealing the quantized nature of ionic charges, which is of crucial importance to our understanding of the sub-continuum transport in nanofluidics and the mechanism of biological ion channels. Here, we report an experimental observation and plausible theoretical reasoning of ionic conduction oscillations. Our experiment is performed under confinement in sub-nanometer (sub-nm) MoS2pores with optoelectronic control enabled for active tuning of pore surface charges. Under this charge control, we measure the ionic current at fixed voltages and observe multiple current peaks. Our analytical discussions and molecular dynamics simulations further reveal that the conductance oscillations may originate from the multi-ion interaction at the pore entry, particularly the electrostatic repulsion of ions external to the pore by ions bound inside the pore. Our work adds a further understanding of ionic Coulomb blockade effect and paves the way for developing advanced ionic machineries.
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影响因子:
10.8
作者:
Thiruraman, Jothi Priyanka;Fujisawa, Kazunori;Drndic, Marija
通讯作者:
Drndic, Marija
影响因子:
3.3
作者:
Kaufman, I. kh;McClintock, P. V. E.;Eisenberg, R. S.
通讯作者:
Eisenberg, R. S.
影响因子:
17.1
作者:
Danda G;Masih Das P;Chou YC;Mlack JT;Parkin WM;Naylor CH;Fujisawa K;Zhang T;Fulton LB;Terrones M;Johnson AT;Drndić M
通讯作者:
Drndić M
影响因子:
8.6
作者:
Hoogerheide DP;Garaj S;Golovchenko JA
通讯作者:
Golovchenko JA