Self-sterilizing Enclosed Face Shield for Healthcare Workers

Project number
25012
Organization
LumiVici
Offering
ENGR498-F2024-S2025
The COVID-19 pandemic underscored the critical need for advanced personal protective equipment (PPE) to shield health care workers and individuals in high-risk environments. The team developed a fully enclosed, self-sterilizing face shield designed to mitigate pathogen exposure and improve respiratory protection. This shield incorporates an integrated sterilization system featuring 222 nanometer light, a range of far-UVC light with germicidal properties. The shield automatically disinfects
the external surface at timed intervals, reducing contamination risks and eliminating the need for manual cleaning.

The light effectively inactivates pathogens while remaining safe for human exposure, unlike traditional 254 nanometer UVC light. Additionally, the face shield fully encloses the user’s face and includes a built-in powered air-purifying respirator that achieves 99.97% filtration efficiency. This ensures continuous airflow while filtering out airborne contaminants.

The team’s engineering efforts focused on optimizing the light dosage for maximum pathogen inactivation while maintaining user safety. The final prototype demonstrates a practical and innovative solution for pandemic preparedness, offering sustainable protection for health care workers, laboratory personnel and frontline responders while reducing reliance on disposable PPE.

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