Video data from: Low-cost measurement of facemask efficacy for filtering expelled droplets during speech

• Mandates for mask use in public during the recent 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 applied a simple optical measurement method to evaluate the efficacy of masks to reduce the transmission of respiratory droplets during regular speech. We compare a variety of commonly available mask types and observe that some mask types approach the performance of standard surgical masks, while some mask alternatives, such as neck fleece or bandanas, offer very little protection. Our measurement setup is inexpensive and can be built and operated by non-experts, allowing for rapid evaluation of mask performance during speech, sneezing, or coughing. ... [Read More]

Total Size

334 files (26.6 GB)

Data Citation

• Fischer, E., Fischer, M., Grass, D., Henrion, I., Warren, W., Westman, E. (2020). Video data files from: Low-cost measurement of facemask efficacy for filtering expelled droplets during speech. Duke Research Data Repository. V2 https://doi.org/10.7924/r4ww7dx6q

Creator

• Henrion, Isaac
• Westman, Eric
• Warren, Warren
• Fischer, Martin
• Grass, David
• Fischer, Emma

DOI

• 10.7924/r4ww7dx6q

Subject

• Face mask efficacy
• COVID-19 (Disease)

Publication Date

• August 5, 2020

ARK

• ark:/87924/r4ww7dx6q

Replaces

• 10.7924/r4kp81n9j

Affiliation

• Advanced Light Imaging and Spectroscopy

Publisher

• Duke Research Data Repository

Collection Dates

• May 20, 2020

Type

• Dataset

Format

• MP4
• TXT

Related Materials

• Fischer, E., Fischer, M., Grass, D., Henrion, I., Warren, W., Westman, E. (2020, August 07). Low-cost measurement of facemask efficacy for filtering expelled droplets during speech. Science Advances.  https://doi.org/10.1126/sciadv.abd3083

Provenance

• Version 2 adds additional data for a further run of cotton masks; a fitted N95 mask; and comparisons among no mask, surgical mask, cotton mask, and bandana worn by several different speakers.

Funding Agency

• Chan Zuckerberg Initiative

Grant Number

• 2019-198099

Contact

• Martin Fischer: Martin.Fischer@duke.edu

License

• Creative Commons CC0 1.0 Universal

Title

• Video data from: Low-cost measurement of facemask efficacy for filtering expelled droplets during speech

License

• http://creativecommons.org/publicdomain/zero/1.0/

Repository

• Duke Research Data Repository

Thumbnail	Title	Date Uploaded	Visibility	Actions
	SetSP3	2020-08-05	Public
	SetSP4	2020-08-05	Public

Versions

Version	DOI	Comment	Publication Date
2	10.7924/r4ww7dx6q	Version 2 adds additional data for a further run of cotton masks; a fitted N95 mask; and comparisons among no mask, surgical mask, cotton mask, and bandana worn by several different speakers.	2020-08-05
1	10.7924/r4kp81n9j		2020-06-17