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Surface plasma with an inkjet-printed patterned electrode for low-temperature applications.

Jinwoo Kim1, Sanghoo Park2, Wonho Choe3,4

  • 1Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

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Researchers developed a new inkjet-printed plasma film for dry disinfection. Enhancements increased its lifespan to two hours, making it practical for applications like food preservation.

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Area of Science:

  • Materials Science
  • Plasma Physics
  • Biotechnology

Background:

  • The global health crisis necessitates advanced sanitization solutions.
  • Conventional plasma reactors have limitations in flexibility and cost.
  • Inkjet-printed plasma offers a disposable and cost-effective alternative.

Purpose of the Study:

  • To develop a flexible, inkjet-printed thin-film plasma source for dry disinfection.
  • To address electrode degradation issues for prolonged operation.
  • To explore applications in food shelf-life extension.

Main Methods:

  • Utilizing inkjet printing to create thin-film plasma electrodes.
  • Optimizing printing and passivation techniques to enhance plasma resistance.
  • Developing a disposable pouch-type plasma source.
  • Evaluating the effectiveness of the plasma source in food preservation.

Main Results:

  • Achieved a plasma film stable even when bent, adaptable to various shapes.
  • Increased electrode lifespan from minutes to two hours of continuous operation.
  • Demonstrated the potential of the plasma source for extending food shelf life through ozone and nitrogen oxide production.

Conclusions:

  • The developed inkjet-printed plasma film offers a practical, cost-effective, and flexible solution for dry disinfection.
  • Optimized electrode design significantly improves operational lifespan and reliability.
  • The disposable plasma source shows promise for food preservation and reducing spoilage.