Liquid filtration of nanoparticles through track-etched membrane filters under unfavorable and different ionic strength conditions: Experiments and modeling

TEM Tomography of Pores with Application to Computational Nanoscale Flows in Nanoporous Silicon Nitride (NPN)

“…Thus, flow never fully develops in the nanopore because exit effects influence a significant portion of transport through the pore. Other work has been performed for the analysis of track-etched filter membranes, where pores typically have a 10:1 length to diameter ratio [ 34 , 35 ]. These higher-aspect-ratio pores allow for the fluid flow to fully develop within the pore, which never occurs within a nanomembrane pore in our simulations.…”

Transport of neutral and charged nanorods across varying-section channels

“…The transport of molecules, proteins and small particles across pores, channels and, in general, porous materials is of paramount relevance in several biological, environmental and technological scenarios. 1 In biology and technological applications, ions and molecules are transported across membrane pores, [2][3][4] RNA is transported across the nuclear membrane [5][6][7] and the crowded environment of cell cytoplasm provides dynamical obstacles to the motion of organelles and vesicles. 8 Similarly, in environmental sciences, pollutants and plant nutrients spread across the porous matrix of rocks and soil.…”

Formation mechanism of asymmetric porous polymer films by photoinduced phase separation in the presence of solvent

“…Polymer films with well‐controlled porosity have attracted considerable attentions in the fabrication of bulk heterojunction solar cells, as a separator for lithium‐ion secondary batteries, and as precision filters for semiconductors . These coating applications require uniform thickness over large areas, high mechanical strength, and narrow pore distributions to precisely control the transports of ions and nanoparticles across the thickness.…”