2022
DOI: 10.3390/membranes12111099
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Can Hindered Transport Models for Rigid Spheres Predict the Rejection of Single Stranded DNA from Porous Membranes?

Abstract: In this paper, predictions from a theoretical model describing the rejection of a rigid spherical solute from porous membranes are compared to experimental results for a single stranded DNA (ssDNA) with 60 thymine nucleotides. Experiments were conducted with different pore size track-etched membranes at different transmembrane pressures and different NaCl concentrations. The model includes both hydrodynamic and electrostatic solute–pore wall interactions; predictions were made using different size parameters f… Show more

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Cited by 2 publications
(1 citation statement)
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“…This component cannot be explained by false positives because the threshold for event detection is well above the Poisson noise level of the baseline PCR. Estimating a hydrodynamic radius of 1 nm for our ligand strands [45], we find a diffusion coefficient of 260 µm 2 /s at 300 K, so the ligands would diffuse approximately 50 nm, comparable to the size of the AuNR, in 10 µs. The fast component thus corresponds to diffusion of the ligand through the near-field of the AuNR.…”
Section: Ultrafast Dynamics Of Monovalent Ligandsmentioning
confidence: 86%
“…This component cannot be explained by false positives because the threshold for event detection is well above the Poisson noise level of the baseline PCR. Estimating a hydrodynamic radius of 1 nm for our ligand strands [45], we find a diffusion coefficient of 260 µm 2 /s at 300 K, so the ligands would diffuse approximately 50 nm, comparable to the size of the AuNR, in 10 µs. The fast component thus corresponds to diffusion of the ligand through the near-field of the AuNR.…”
Section: Ultrafast Dynamics Of Monovalent Ligandsmentioning
confidence: 86%