SEM image of a porous wick material made from SS316L

The file contains scanning electron microscope (SEM) images of a porous sample made from SS316L. The SEM technique enables the measurement of pore sizes exclusively at the external cut surface of the wick, primarily capturing the largest pores. Additionally, the pore channels within the material exhibit dimensional variations due to an irregular microstructure, which may enhance capillary pressure. This research was supported by National Science Centre grant OPUS no. UMO-2022/47/B/ST8/01490