nnp N95-electrocharged filtration principle based face mask design using common materials Figure 10

nnp N95-electrocharged filtration principle based face mask design using common materials Figure 10

Figure 10: (a) A commercial fabric mask with folds and which expands when worn on the face to reveal the folds as shown (b) here by intentionally expanding with the hand.

Date:
05 March 2024
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