Skip to main content
construction release_alert
Scholars@Duke will be undergoing maintenance April 11-15. Some features may be unavailable during this time.
cancel

Low-cost measurement of face mask efficacy for filtering expelled droplets during speech.

Publication ,  Journal Article
Fischer, EP; Fischer, MC; Grass, D; Henrion, I; Warren, WS; Westman, E
Published in: Sci Adv
September 2020

Mandates for mask use in public during the recent coronavirus disease 2019 (COVID-19) pandemic, worsened by global shortage of commercial supplies, have led to widespread use of homemade masks and mask alternatives. It is assumed that wearing such masks reduces the likelihood for an infected person to spread the disease, but many of these mask designs have not been tested in practice. We have demonstrated a simple optical measurement method to evaluate the efficacy of masks to reduce the transmission of respiratory droplets during regular speech. In proof-of-principle studies, we compared a variety of commonly available mask types and observed that some mask types approach the performance of standard surgical masks, while some mask alternatives, such as neck gaiters or bandanas, offer very little protection. Our measurement setup is inexpensive and can be built and operated by nonexperts, allowing for rapid evaluation of mask performance during speech, sneezing, or coughing.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Sci Adv

DOI

EISSN

2375-2548

Publication Date

September 2020

Volume

6

Issue

36

Location

United States

Related Subject Headings

  • Speech
  • SARS-CoV-2
  • Respiration
  • Pneumonia, Viral
  • Pandemics
  • Optical Imaging
  • Masks
  • Humans
  • Filtration
  • Coronavirus Infections
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Fischer, E. P., Fischer, M. C., Grass, D., Henrion, I., Warren, W. S., & Westman, E. (2020). Low-cost measurement of face mask efficacy for filtering expelled droplets during speech. Sci Adv, 6(36). https://doi.org/10.1126/sciadv.abd3083
Fischer, Emma P., Martin C. Fischer, David Grass, Isaac Henrion, Warren S. Warren, and Eric Westman. “Low-cost measurement of face mask efficacy for filtering expelled droplets during speech.Sci Adv 6, no. 36 (September 2020). https://doi.org/10.1126/sciadv.abd3083.
Fischer EP, Fischer MC, Grass D, Henrion I, Warren WS, Westman E. Low-cost measurement of face mask efficacy for filtering expelled droplets during speech. Sci Adv. 2020 Sep;6(36).
Fischer, Emma P., et al. “Low-cost measurement of face mask efficacy for filtering expelled droplets during speech.Sci Adv, vol. 6, no. 36, Sept. 2020. Pubmed, doi:10.1126/sciadv.abd3083.
Fischer EP, Fischer MC, Grass D, Henrion I, Warren WS, Westman E. Low-cost measurement of face mask efficacy for filtering expelled droplets during speech. Sci Adv. 2020 Sep;6(36).

Published In

Sci Adv

DOI

EISSN

2375-2548

Publication Date

September 2020

Volume

6

Issue

36

Location

United States

Related Subject Headings

  • Speech
  • SARS-CoV-2
  • Respiration
  • Pneumonia, Viral
  • Pandemics
  • Optical Imaging
  • Masks
  • Humans
  • Filtration
  • Coronavirus Infections