Plasma printing: patterned surface functionalisation and coating at atmospheric pressure

Area of Science:

• Surface science
• Plasma physics
• Materials science

Background:

• Dielectric barrier discharge (DBD) is a well-established plasma technology.
• Micron-scale patterning is crucial for microtechnology and biotechnology.
• Existing methods may lack precision or scalability for certain applications.

Purpose of the Study:

• To introduce and characterize a new plasma printing technique for micropatterning.
• To demonstrate the versatility of plasma printing for surface modification of dielectric substrates.
• To explore applications in coating, functionalization, biomolecule immobilization, and plating.

Main Methods:

• Utilizing a dielectric barrier discharge (DBD) in small gas volumes (tens to hundreds of micrometers).
• Operating the plasma discharge at atmospheric pressure.
• Applying the technique to modify polymeric films and other dielectric substrates.

Main Results:

• Achieved local modification of dielectric substrates with high precision.
• Demonstrated successful surface coating and chemical functionalization.
• Showcased immobilization of biomolecules and area-selective electroless plating.

Conclusions:

• Plasma printing is a viable and effective technique for precise micropatterning of dielectric surfaces.
• The method offers significant potential for advancements in biotechnology and microtechnology.
• The technique's adaptability allows for diverse surface engineering applications.