Publications by authors named "Ana Carla de Paula Leite Almeida"
Article Synopsis
- This study introduces an inexpensive plasma device that employs a 3D-printed design using a parallel-plate dielectric barrier discharge with a metallic mesh electrode.
- The device operates on atmospheric air without requiring additional gas supply and significantly modifies the surface composition of polyethylene, reducing carbon levels and increasing oxygen after treatment.
- It effectively reduces microbial load by over 99% within 1 to 10 minutes while maintaining Vero cell viability between 91% and 96%, indicating its potential for material surface modifications and infection control applications.
Polymers (Basel)
August 2023
Article Synopsis
- Atmospheric pressure plasma jets (APPJs) are commonly used for modifying materials but typically have a limited treatment area of just a few centimeters.
- To enhance the treatment range, researchers developed a funnel-like APPJ design with a larger exit and used a gas-permeable cotton cloth to improve gas flow dynamics.
- The modified APPJ was tested on high-density polyethylene samples, showing simultaneous surface modification on both sides, but with the incorporation of different functional groups on each side after exposure to plasma.
