Figure 1
The skeletal (left) and final shape (right) of the face mask we designed. The schematic on the left shows blower slots and the cartridges with air ducts and UVC LEDs
Figure 2
The internal structure of the three-layer cartridge (100×100×10 mm) used in the experiment
Figure 3
The internal structure of the one-layer cartridge (50×50×6 mm) used in the experiment
Figure 4
Experimental setup with active and control cartridges
Figure 5
Efficiency against S. aureus with the three-layer cartridge and varying UVC light power, (a) no UVC light, (b) 50 mW, (c) 100 mW, and (d) 150 mW
Figure 6
Efficiency against S. aureus with the one-layer cartridge at no UV light (a) and 75 mW UVC light power (b)
Figure 7
Efficiency against P. aeruginosa with the one-layer cartridge at no UV light (a) and 75 mW UVC light power (b)
Figure 8
Comparison of viral titres (TCID50/mL) obtained with the active (75 mW) one-layer cartridge (left column) and control (no-LED) cartridge (right column)