Voltage-Gated Ion Transport in Two-Dimensional Sub-1 nm Nanofluidic Channels

ACS Nano ◽  
2019 ◽  
Vol 13 (10) ◽  
pp. 11793-11799 ◽  
Author(s):  
Yuqi Wang ◽  
Huacheng Zhang ◽  
Yuan Kang ◽  
Yinlong Zhu ◽  
George P. Simon ◽  
...  
Keyword(s):  
Ion Transport ◽  
Two Dimensional ◽  
Voltage Gated ◽  
Nanofluidic Channels

scholarly journals Towards explicit regulating-ion-transport: nanochannels with only function-elements at outer-surface

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Qun Ma ◽  
Yu Li ◽  
Rongsheng Wang ◽  
Hongquan Xu ◽  
Qiujiao Du ◽  
...  
Keyword(s):  
Ion Transport ◽  
Numerical Simulations ◽  
Power Density ◽  
Outer Surface ◽  
Internal Resistance ◽  
Porous Membranes ◽  
Two Dimensional ◽  
Ionic Selectivity ◽  
Key Features ◽  
Energy Conversion Devices

AbstractFunction elements (FE) are vital components of nanochannel-systems for artificially regulating ion transport. Conventionally, the FE at inner wall (FEIW) of nanochannel−systems are of concern owing to their recognized effect on the compression of ionic passageways. However, their properties are inexplicit or generally presumed from the properties of the FE at outer surface (FEOS), which will bring potential errors. Here, we show that the FEOS independently regulate ion transport in a nanochannel−system without FEIW. The numerical simulations, assigned the measured parameters of FEOS to the Poisson and Nernst-Planck (PNP) equations, are well fitted with the experiments, indicating the generally explicit regulating-ion-transport accomplished by FEOS without FEIW. Meanwhile, the FEOS fulfill the key features of the pervious nanochannel systems on regulating-ion-transport in osmotic energy conversion devices and biosensors, and show advantages to (1) promote power density through concentrating FE at outer surface, bringing increase of ionic selectivity but no obvious change in internal resistance; (2) accommodate probes or targets with size beyond the diameter of nanochannels. Nanochannel-systems with only FEOS of explicit properties provide a quantitative platform for studying substrate transport phenomena through nanoconfined space, including nanopores, nanochannels, nanopipettes, porous membranes and two-dimensional channels.

Lamellar Porous Vermiculite Membranes for Boosting Nanofluidic Osmotic Energy Conversion

2021 ◽  
Author(s):  
Li Cao ◽  
Hong Wu ◽  
Chunyang Fan ◽  
Zhiming Zhang ◽  
Benbing Shi ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Power Density ◽  
Great Promise ◽  
Two Dimensional ◽  
Nanofluidic Channels ◽  
Salinity Gradients ◽  
Transmembrane Resistance

Lamellar membranes with two-dimensional nanofluidic channels hold great promise in harvesting osmotic energy from salinity gradients. However, the power density is often limited by the high transmembrane resistance primarily caused...

scholarly journals Water friction in nanofluidic channels made from two-dimensional crystals

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ashok Keerthi ◽  
Solleti Goutham ◽  
Yi You ◽  
Pawin Iamprasertkun ◽  
Robert A. W. Dryfe ◽  
...  
Keyword(s):  
Hexagonal Boron Nitride ◽  
Slip Length ◽  
Two Dimensional ◽  
Water Flows ◽  
Nanofluidic Channels ◽  
Molecular Separation ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Biological Channels ◽  
Atomically Flat

AbstractMembrane-based applications such as osmotic power generation, desalination and molecular separation would benefit from decreasing water friction in nanoscale channels. However, mechanisms that allow fast water flows are not fully understood yet. Here we report angstrom-scale capillaries made from atomically flat crystals and study the effect of confining walls’ material on water friction. A massive difference is observed between channels made from isostructural graphite and hexagonal boron nitride, which is attributed to different electrostatic and chemical interactions at the solid-liquid interface. Using precision microgravimetry and ion streaming measurements, we evaluate the slip length, a measure of water friction, and investigate its possible links with electrical conductivity, wettability, surface charge and polarity of the confining walls. We also show that water friction can be controlled using hybrid capillaries with different slip lengths at opposing walls. The reported advances extend nanofluidics’ toolkit for designing smart membranes and mimicking manifold machinery of biological channels.

1-D modeling of ion transport in rectangular nanofluidic channels

2012 ◽  
Vol 258 (6) ◽  
pp. 2157-2160 ◽  
Author(s):  
Liu Kun ◽  
Ba Dechun ◽  
Gu Xiaoguang ◽  
Du Guangyu ◽  
Lin Zeng ◽  
...  
Keyword(s):  
Ion Transport ◽  
Nanofluidic Channels

Ion transport in graphene nanofluidic channels

Nanoscale ◽  
2016 ◽  
Vol 8 (47) ◽  
pp. 19527-19535 ◽  
Author(s):  
Quan Xie ◽  
Fang Xin ◽  
Hyung Gyu Park ◽  
Chuanhua Duan
Keyword(s):  
Ion Transport ◽  
Nanofluidic Channels

Ion transport in nanofluidic channels

2010 ◽  
Vol 39 (3) ◽  
pp. 901-911 ◽  
Author(s):  
Hirofumi Daiguji
Keyword(s):  
Ion Transport ◽  
Nanofluidic Channels

scholarly journals Selective ion sieving through arrays of sub-nanometer nanopores in chemically tunable 2D carbon membranes

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20785-20791 ◽  
Author(s):  
Pauline M. G. van Deursen ◽  
Zian Tang ◽  
Andreas Winter ◽  
Michael J. Mohn ◽  
Ute Kaiser ◽  
...  
Keyword(s):  
Ion Transport ◽  
Ion Selectivity ◽  
Two Dimensional ◽  
Pore Density ◽  
Molecular Precursors ◽  
Carbon Membranes ◽  
Transport Measurements

Two-dimensional carbon nanomembranes synthesized from molecular precursors act as ion sieving membranes. The pore density and efficiency of ion selectivity are probed using a combination of HR-TEM and ion transport measurements.

scholarly journals Carbon: Two-Dimensional Porous Carbon: Synthesis and Ion-Transport Properties (Adv. Mater. 36/2015)

2015 ◽  
Vol 27 (36) ◽  
pp. 5254-5254 ◽  
Author(s):  
Xiaoyu Zheng ◽  
Jiayan Luo ◽  
Wei Lv ◽  
Da-Wei Wang ◽  
Quan-Hong Yang
Keyword(s):  
Ion Transport ◽  
Transport Properties ◽  
Porous Carbon ◽  
Two Dimensional
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