Fig. 6: Morphological characterization of the polypropylene filter membranes after photoactivation with and without 1D microswarm.
From: Magnetically boosted 1D photoactive microswarm for COVID-19 face mask disruption
a–f Schematic illustrations and different magnification SEM images of the microfiber network after photoactivation without (a–c) or with treatment of the 1D microswarm boosting (d–f). g, h BET surface area analysis for the quantification of morphological disruption of the filter membranes. Comparison of N2 adsorption–desorption isotherms (g), surface area, and BET total pore volumes (h) after photoactivation with and without 1D microswarm boosting. Error bars in h indicate standard deviation from triplicate measurements.
