DOI: 10.5281/zenodo.17809813
title: Coupling Effects on Access Resistance of In-Series Nanopores

description: Data supporting the findings of the manuscript "Coupling Effects on Access Resistance of In-Series Nanpores"
description: This folder contains the data extracted from the finite element simulations as well as the values that were calculated from the analytical models presented in the paper.

In the folder "COMSOL__Files", there are representative COMSOL application files for each of the two cases that were considered in the paper. All simulation data was obtained from similar files  but with varying sweep parameters for the different geometries.

The rest of the folders are organized by which figure in the paper the data corresponds to. For figures with multiple parts, additional folder are arranged within the large folder corresponding to these separate parts. 

For Fig4b and Fig5b, the files beginning with "Analytical_Model" contain the data that was calculated from the model presented in the main body of the paper. The files starting with "Constant_Current_Density_Model" correspond to the values that were calculated from the constant current density model described in the appendix. The files starting with "COMSOL_Data" correspond to the values obtained from the data generated by COMSOL. These files are comma separated with l_c (nm), the length of the central compartment, in the first column, and R_a (Ohms), the total access resistance of the system, in the second column. The nanometer value given at the end of each file name indicates the nanopore radius for the case of Fig4b and the central compartment radius for the case of Fig5b.

In the folder Fig 4c, the current density profiles are contained in the files beginning with "Current_Density" and followed by the nanometer value of the radius of the nanopore that the data corresponds to. The values are comma separated, with the radial distance, r (nm), in the first column, and the current density, j(r) (A/m^2), in the second. In the file "Total_Currents.txt", the radius of the nanopore is given in nanometers in the first column, and the total current flowing through the system in amps is given in the second column. Here, r_c = r_m = 40 nm, and l_c/r_c = 5.0.

In the folder Fig 4d, the current density profiles are contained in the files beginning with "Current_Density" and followed by the nanometer value of the length of the central compartment that the data corresponds to. The values are comma separated, with the radial distance, r (nm), in the first column, and the current density, j(r) (A/m^2), in the second. In the file "Total_Currents.txt", the length of the central compartment is given in nanometers in the first column, and the total current flowing through the system in amps is given in the second column. Here, r_c = r_m = 40 nm, and r_n = 12 nm.

For Fig4e, the file "Analytical_Model.txt" contains the data that was calculated from the model presented in the main body of the paper. The file has two columns, with the first corresponding to the ratio r_n/r_c and the second corresponding to the value of the coupling length, l'_{c,95}, in nanometers. The files starting with "Coupling_Lengths" contain the values of the coupling length extracted from the COMSOL data for a central compartment radius as indicated by the nanometer value at the end of the file name. The files have four columns, with the first containing the ratios r_n/r_c, the second containing the coupling lengths l'_{c,95} in nanometers, the third containing the upper error in nanometers, and the fourth containing the lower error in nanometers. Here, r_c = r_m.

In the folder Fig 5c, the current density profiles are contained in the files beginning with "Current_Density" and followed by the nanometer value of the radius of the central compartment that the data corresponds to. The values are comma separated, with the radial distance, r (nm), in the first column, and the current density, j(r) (A/m^2), in the second. In the file "Total_Currents.txt", the radius of the central compartment is given in nanometers in the first column, and the total current flowing through the system in amps is given in the second column. Here, r_m = 40 nm, l_c = 200 nm, and r_n = 2 nm.

In the folder Fig 5d, the current density profiles are contained in the files beginning with "Current_Density" and followed by the nanometer value of the length of the central compartment that the data corresponds to. The values are comma separated, with the radial distance, r (nm), in the first column, and the current density, j(r) (A/m^2), in the second. In the file "Total_Currents.txt", the length of the central compartment is given in nanometers in the first column, and the total current flowing through the system in amps is given in the second column. Here, r_m = 40 nm, r_c = 30 nm, and r_n = 2 nm.

For Fig5e, the files starting with "Analytical_Model" contain the data that was calculated from the model presented in the main body of the paper. The nanometer value at the end of these file names indicates the radius of the central compartment being considered. The files have two columns, with the first corresponding to the ratio r_n/r_c and the second corresponding to the value of the coupling length, l'_{c,95}, in nanometers. The files starting with "Coupling_Lengths" contain the values of the coupling length extracted from the COMSOL data for a central compartment radius as indicated by the nanometer value at the end of the file name. The files have four columns, with the first containing the ratios r_n/r_c, the second containing the coupling lengths l'_{c,95} in nanometers, the third containing the upper error in nanometers, and the fourth containing the lower error in nanometers. Here, r_m = 40 nm.

For Fig6, the current density profiles are contained in the files beginning with "Current_Density" and followed by the nanometer value of the length of the central compartment that the data corresponds to. The values are comma separated, with the radial distance, r (nm), in the first column, and the current density, j(r) (A/m^2), in the second. In the file "Total_Currents.txt", the length of the central channel is given in nanometers in the first column, and the total current flowing through the system in amps is given in the second column. This data corresponds to the geometry with r_m = r_c = 40 nm and r_n = 12 nm.