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Plasmonic and Superhydrophobic Self-Decontaminating N95 Respirators.
Zhong, Hong; Zhu, Zhaoran; You, Peng; Lin, Jing; Cheung, Chi Fai; Lu, Vivien L; Yan, Feng; Chan, Ching-Yuen; Li, Guijun.
  • Zhong H; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Zhu Z; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • You P; Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Lin J; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Cheung CF; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Lu VL; Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Yan F; Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Chan CY; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
  • Li G; State Key Laboratory of Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, China.
ACS Nano ; 14(7): 8846-8854, 2020 07 28.
Article in English | MEDLINE | ID: covidwho-612577
ABSTRACT
The COVID-19 pandemic is endangering the world due to the spread of respiration droplets with viruses. Medical workers and frontline staff need to wear respirators to protect themselves from breathing in the virus-containing respiration droplets. The most frequently used state-of-the-art respirators are of N95 standard; however, they lack self-decontamination capabilities. In addition, the viruses and bacteria can accumulate on the respirator surfaces, possessing high risks to the wearers over long-term usage. Photothermal decontamination is a contactless, fast, low-cost, and widely available method, capable of decontaminating the respirators. Herein, we report a plasmonic photothermal and superhydrophobic coating on N95 respirators, possessing significantly better protection than existing personal protection equipment. The plasmonic heating can raise the surface temperature to over 80 °C for this type of respirator within 1 min of sunlight illumination. The superhydrophobic features prohibit respiration droplets from accumulating on the respirator surfaces. The presence of the silver nanoparticles can provide additional protection via the silver ion's disinfection toward microbes. These synergistic features of the composite coatings provide the N95 respirator with better protection and can inspire experts from interdisciplinary fields to develop better personal protection equipment to fight the COVID-19 pandemic.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Respiratory Protective Devices / Disinfection / Equipment Design / Printing, Three-Dimensional / Personal Protective Equipment / Masks Type of study: Prognostic study Limits: Humans Language: English Journal: ACS Nano Year: 2020 Document Type: Article Affiliation country: Acsnano.0c03504

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Respiratory Protective Devices / Disinfection / Equipment Design / Printing, Three-Dimensional / Personal Protective Equipment / Masks Type of study: Prognostic study Limits: Humans Language: English Journal: ACS Nano Year: 2020 Document Type: Article Affiliation country: Acsnano.0c03504