Ion current rectification influenced by length and location of surface charge in fluidic unipolar conical nanopores

2016 ◽  
Vol 230 ◽  
pp. 493-500 ◽  
Author(s):  
Kunwar Pal Singh
Keyword(s):  
Surface Charge ◽  
Ion Current ◽  
Ion Current Rectification ◽  
Conical Nanopores ◽  
Current Rectification

Surface Charge Density Determination of Single Conical Nanopores Based on Normalized Ion Current Rectification

Langmuir ◽  
2011 ◽  
Vol 28 (2) ◽  
pp. 1588-1595 ◽  
Author(s):  
Juan Liu ◽  
Maksim Kvetny ◽  
Jingyu Feng ◽  
Dengchao Wang ◽  
Baohua Wu ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Surface Charge Density ◽  
Ion Current ◽  
Ion Current Rectification ◽  
Density Determination ◽  
Conical Nanopores ◽  
Current Rectification

scholarly journals Accurate characterization of single track-etched, conical nanopores

2014 ◽  
Vol 16 (29) ◽  
pp. 15214-15223 ◽  
Author(s):  
Pavel Yu. Apel ◽  
Patricio Ramirez ◽  
Irina V. Blonskaya ◽  
Oleg L. Orelovitch ◽  
Bozena A. Sartowska
Keyword(s):  
Ion Current ◽  
Single Track ◽  
Ion Current Rectification ◽  
Conical Nanopores ◽  
Current Rectification

Deviation from cone geometry significantly influences the ion current rectification through track-etched nanopores with tip radii smaller than 10 nm.

Concentration-Gradient-Dependent Ion Current Rectification in Charged Conical Nanopores

Langmuir ◽  
2011 ◽  
Vol 28 (4) ◽  
pp. 2194-2199 ◽  
Author(s):  
Liuxuan Cao ◽  
Wei Guo ◽  
Yugang Wang ◽  
Lei Jiang
Keyword(s):  
Concentration Gradient ◽  
Ion Current ◽  
Ion Current Rectification ◽  
Conical Nanopores ◽  
Current Rectification

Salt-Dependent Ion Current Rectification in Conical Nanopores: Impact of Salt Concentration and Cone Angle

2017 ◽  
Vol 121 (50) ◽  
pp. 28139-28147 ◽  
Author(s):  
Jyh-Ping Hsu ◽  
Tsai-Wei Lin ◽  
Chih-Yuan Lin ◽  
Shiojenn Tseng
Keyword(s):  
Salt Concentration ◽  
Cone Angle ◽  
Ion Current ◽  
Ion Current Rectification ◽  
Conical Nanopores ◽  
Current Rectification

scholarly journals Ion current rectification and rectification inversion in conical nanopores: a perm-selective view

2011 ◽  
Vol 13 (12) ◽  
pp. 5430 ◽  
Author(s):  
Dmitry Momotenko ◽  
Fernando Cortés-Salazar ◽  
Jacques Josserand ◽  
Shujuan Liu ◽  
Yuanhua Shao ◽  
...  
Keyword(s):  
Ion Current ◽  
Ion Current Rectification ◽  
Conical Nanopores ◽  
Current Rectification

Ion Current Rectification Behavior of Conical Nanopores Filled with Spatially Distributed Fixed Charges

2019 ◽  
Vol 123 (43) ◽  
pp. 26299-26308 ◽  
Author(s):  
Jingchun Cai ◽  
Quanfeng He ◽  
Laibo Song ◽  
Lianhuan Han ◽  
Bo Liu ◽  
...  
Keyword(s):  
Ion Current ◽  
Ion Current Rectification ◽  
Fixed Charges ◽  
Conical Nanopores ◽  
Spatially Distributed ◽  
Current Rectification

Maximizing ion current rectification in a bipolar conical nanopore fluidic diode using optimum junction location

2016 ◽  
Vol 18 (40) ◽  
pp. 27958-27966 ◽  
Author(s):  
Kunwar Pal Singh
Keyword(s):  
Surface Charge ◽  
Ion Current ◽  
Optimum Location ◽  
Base Diameter ◽  
Ion Current Rectification ◽  
Charge Densities ◽  
Fluidic Diode ◽  
Current Rectification

The optimum location of junction z0m as a function of base diameter for different surface charge densities with data from a fitted equation.

scholarly journals Chemical Sensing and Chemoresponsive Pumping with Conical-Pore Polymeric Membranes

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 571 ◽  
Author(s):  
Stevie N. Bush ◽  
Thomas T. Volta ◽  
Charles R. Martin
Keyword(s):  
Surface Charge ◽  
Ionic Current ◽  
Chemical Species ◽  
Pore Wall ◽  
Ion Current ◽  
Wall Surface ◽  
Specific Chemical ◽  
Synthetic Membranes ◽  
Ion Current Rectification ◽  
Current Rectification

Synthetic membranes containing asymmetrically shaped pores have been shown to rectify the ionic current flowing through the membrane. Ion-current rectification means that such membranes produce nonlinear current–voltage curves analogous to those observed with solid-state diode rectifiers. In order to observe this ion-current rectification phenomenon, the asymmetrically shaped pores must have pore-wall surface charge. Pore-wall surface charge also allows for electroosmotic flow (EOF) to occur through the membrane. We have shown that, because ion-current is rectified, EOF is likewise rectified in such membranes. This means that flow through the membrane depends on the polarity of the voltage applied across the membrane, one polarity producing a higher, and the opposite producing a lower, flow rate. As is reviewed here, these ion-current and EOF rectification phenomena are being used to develop new sensing technologies. Results obtained from an ion-current-based sensor for hydrophobic cations are reviewed. In addition, ion-current and EOF rectification can be combined to make a new type of device—a chemoresponsive nanofluidic pump. This is a pump that either turns flow on or turns flow off, when a specific chemical species is detected. Results from a prototype Pb2+ chemoresponsive pump are also reviewed here.

Sign in / Sign up

Export Citation Format

Share Document