| 2022-CAST-69657 | |
| Researchers at Purdue University have developed a filter for virus trapping and inactivation. During the COVID-19 pandemic, face masks have been used to reduce spread of the virus. However, masks have short lifetimes and suffer from poor breathability during strenuous activities. Purdue researchers have proposed a multi-layer mask design to repel saliva droplets and inactivate respiratory viruses. The outside layer of the mask is a hydrophobic and lipophobic layer that prevents saliva droplets from entering the mask. The internal layers include a hydrophobic-copper (Hy-Cu) filter coated with diamond-like carbon (DLC) to inactivate viruses and non-woven layers to capture small microdroplets. The Hy-Cu filter is highly breathable, offering 10% less air resistance compared to disposable masks and KN95 masks. The Hy-Cu filter has 90% filtering efficiency and 99% virus inactivation over a period of two hours. Technology Validation: Testing results showed the Hy-Cu filter to be highly breathable and have higher filter efficiency and virus inactivation than the non-woven layer of disposable masks. Advantages: - Hy-Cu filter has higher filter efficiency and virus inactivation than the non-woven layer of disposable masks. - Hy-Cu filter has higher breathability than disposable masks. Applications: - Hy-Cu filter can be adapted to existing face coverings. |
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Nov 17, 2022
Utility Patent
United States
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Nov 19, 2021
Provisional-Patent
United States
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Purdue Office of Technology Commercialization The Convergence Center 101 Foundry Drive, Suite 2500 West Lafayette, IN 47906 Phone: (765) 588-3475 Fax: (765) 463-3486 Email: otcip@prf.org |
