Journal: Membranes

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

doi: 10.3390/membranes8020026

Figure Lengend Snippet: COMSOL Multiphysics™ Simulations of Nanopores Reconstructed by Electron Tomography. ( A ) Reconstructed nanopore STLs can be representative of a region of a membrane with multiple pores or ( B ) of a single pore, where both have nanoscale structure. ( C ) Fluid flow simulations of B, showing regions of irregularity along nanopore sidewalls. ( D ) The velocity profile of a simple cylindrical representation of the nanopore in B. ( E ) Velocity contour plot of C, with streamlines overlaid (black). Flow enters from the top visible plane of the pore at V = 5.7 × 10 −5 m·s −1 and exits at the bottom plane at atmospheric pressure ( P gauge = 0). ( B , C , E ) are representations of the same nanopore at the same scale.

Article Snippet: The finalized contours were then exported into a 3D STL file, which can then be imported into other programs for simulation or visualization purposes, including tangible 3D-printable models ( ). shows the results of a COMSOL Multiphysics™ simulation where the tomographically generated STL defined the system geometry.

Techniques: Tomography