N95

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작성자마블 조회 0회 작성일 2021-09-14 23:34:57 댓글 0

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The Astounding Physics of N95 Masks

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This video was written in collaboration with Aatish Bhatia - https://aatishb.com
To learn more about using \u0026 decontaminating N95 masks: https://www.n95decon.org

Thanks to Manu Prakash for useful discussion and feedback (Manu is involved with the N95 decontamination project)

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The physics \u0026 engineering of N95 mask design is pretty incredible.

REFERENCES

10X efficiency of electrically charged fibers

"The electrostatic charge of N95 masks is a major contributor to their filtration efficiency, improving it at least 10-fold over uncharged fabric" (Tsai et al., Journal of Electrostatics 2002; Peter Tsai, personal communication).

Prakash Lab COVID-19 Response Group Working Draft Document on N95 masks: https://docs.google.com/document/d/1aACcbkyZjR7nZy_wWeGQ9U2iGy0y4QajBeOL8RqAZIQ/edit

“Electrostatic charge contributes as much as 95% of the filtration efficiency”
Molina, A., Vyas, P., Khlystov, N., Kumar, S., Kothari, A., Deriso, D., ... \u0026 Prakash, M. (2020). Project 1000 x 1000: Centrifugal melt spinning for distributed manufacturing of N95 filtering facepiece respirators. arXiv preprint arXiv:2004.13494. https://arxiv.org/pdf/2004.13494.pdf

Tsai, P. P., Schreuder-Gibson, H., \u0026 Gibson, P. (2002). Different electrostatic methods for making electret filters. Journal of electrostatics, 54(3-4), 333-341. https://www.researchgate.net/profile/Phillip_Gibson/publication/222659741_Different_electrostatic_methods_for_making_electret_filters/links/5a5912cba6fdcc3bfb5ab21e/Different-electrostatic-methods-for-making-electret-filters.pdf

History of Electrets

Jefimenko, O. D., \u0026 Walker, D. K. (1980). Electrets. The Physics Teacher, 18(9), 651-659. https://aapt.scitation.org/doi/abs/10.1119/1.2340651

Physics of Air Filtration

Hinds, W. C. (1999). Aerosol technology: properties, behavior, and measurement of airborne particles. John Wiley \u0026 Sons. https://www.wiley.com/en-us/Aerosol+Technology%3A+Properties%2C+Behavior%2C+and+Measurement+of+Airborne+Particles%2C+2nd+Edition-p-9780471194101

Scientific consortium for data-driven study of N95: https://www.n95decon.org/

N95 \u0026 virus particle sizes

Bałazy, A., Toivola, M., Adhikari, A., Sivasubramani, S. K., Reponen, T., \u0026 Grinshpun, S. A. (2006). Do N95 respirators provide 95% protection level against airborne viruses, and how adequate are surgical masks?. American journal of infection control, 34(2), 51-57. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.488.4644\u0026rep=rep1\u0026type=pdf

Harnish, D. A., Heimbuch, B. K., Husband, M., Lumley, A. E., Kinney, K., Shaffer, R. E., \u0026 Wander, J. D. (2013). Challenge of N95 filtering facepiece respirators with viable H1N1 influenza aerosols. Infection Control \u0026 Hospital Epidemiology, 34(5), 494-499. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4646082/

Liao, L., Xiao, W., Zhao, M., Yu, X., Wang, H., Wang, Q., ... \u0026 Cui, Y. (2020). "Can N95 respirators be reused after disinfection? How many times?. ACS nano. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7202248/


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N95 3M mask: How to Wear and Remove

If you live in Singapore, you are probably well aware of the haze - an annual occurrence that takes place from May to October. When air quality is in the unhealthy range, PSI above 200, and you need to be outdoors for several hours, wearing an N95 mask can help reduce your exposure to particle pollutants.

In this clip, we demonstrate the proper way to put on and remove the N95 3M Respirator Mask.
#washyourhands #n95mask

For more health tips, visit HealthXchange https://www.healthxchange.sg

For health tips on how to keep safe from COVID-19, visit https://www.healthxchange.sg/men/health-scares-outbreaks/how-to-keep-safe-novel-coronavirus-self-care-tips

For health tips on protecting yourself from haze, visit https://www.healthxchange.sg/asthma/essential-guide-asthma/how-protect-yourself-from-haze-singapore

Visit Singapore General Hospital (SGH) website: https://www.sgh.com.sg
Visit SingHealth website for more info: https://www.singhealth.com.sg

MASK TEST | VAPING WHILE WEARING VARIOUS MASKS | N95, Surgical, Cotton and more.

DISCLAIMERS: I'M NOT A MEDICAL PROFESSIONAL OR A SCIENTIST. DO NO VAPE THROUGH A MASK. AS YOU WILL SEE IN THIS VIDEO IT CAN BURN IT.
Please comment and tell me your thoughts after watching this video. This video was not sponsored. The liquid used in the video does not contain nicotine.

Rhinestone cotton mask: https://amzn.to/3es4w8p

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#N95

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