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AIST:Research Highlights, Inactivation of Viruses with Coating Technology

Electronics and Manufacturing
Inactivation of Viruses with Coating Technology
  • AKEDO Jun, SOHMA Mitsugu
    Advanced Coating Technology Research Center

Released: March 22, 2021

A ceramic porous film was fabricated on the surface of a substrate and made to carry an antiviral agent

We confirmed that viruses can be inactivated in a short time by having a porous film carry a chemical agent, and long-term sustainability can also be designed.

Figure: Inactivation of viruses on the surface of a ceramic porous film carrying an antiviral agent
Inactivation of viruses on the surface of a ceramic porous film carrying an antiviral agent
 

Technology to inactivate viruses remains an important theme

Wiping with surfactant is an effective means of inactivating viruses adhered to the surface of substances, but frequent wiping is difficult. Coated chemical agents elute into water and oil, so long-term use cannot be expected. The method of mixing substances that inactivate viruses into materials and other items has been practically applied, but the substances do not easily appear on the material surface. Technology for inactivating viruses on solid surfaces remains an important theme.

Photo: Aerosol Deposition (AD) method
 

Development of technology for fabricating an antiviral coating that has both immediacy and sustainability

Aerosol Deposition (AD) method, a coating technology developed by AIST, was used to fabricate an alumina nanoporous film on the surface of a substrate, and this film was impregnated with a chemical agent that is effective against viruses similar to the novel coronavirus (SARS-CoV-2). This coating exhibited remarkable antiviral effects, with a virus inactivation rate of 99.997% or more after 24 hours and 99.98% or more after two hours. Furthermore, the technology enables fabrication of antiviral coatings that feel good at normal temperature on the surface of various substrates such as stainless steel, glass, and resin.

Photo: Chemicals
 

Promote detailed examination for each of various applications and achieve early practical application

We will cooperate with private companies to evaluate long-term durability of actual products in real environments, and establish methods of refreshing surfaces after coating and of replenishing the chemical agent, etc.

Photo: AKEDO Jun
 

Contact for inquiries related to this theme

Photo: AKEDO Jun
Photo: SOHMA Mitsugu
Advanced Coating Technology Research Center

AKEDO Jun, Director, Research Center

SOHMA Mitsugu, Deputy Director, Research Center

AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 Japan

E-mail: M-act_webmaster-ml*aist.go.jp (Please convert "*" to "@".)

Web: https://unit.aist.go.jp/atc/en/index.html

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