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Wettability Contrast Gravure Printing.

Heng Zhang¹, Alexander Ramm¹, Sooman Lim¹

¹Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue S.E. Minneapolis, MN, 55455, USA.

Advanced Materials (Deerfield Beach, Fla.)

|October 20, 2015

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Researchers developed a novel silicon gravure printing method using wettable cells and non-wettable lands. This technique enables precise printing of ultra-fine, continuous lines with aqueous silica ink, eliminating the need for a doctor blade.

Area of Science:

Materials Science
Nanotechnology
Printing Technology

Background:

Traditional gravure printing often requires a doctor blade for ink wiping.
Achieving high-resolution printing with aqueous inks presents challenges.
Surface engineering of printing substrates is crucial for advanced patterning.

Purpose of the Study:

To engineer silicon gravure patterns for efficient aqueous ink printing.
To demonstrate a doctor-blade-free ink removal strategy.
To achieve ultra-fine line printing with aqueous silica ink.

Main Methods:

Fabrication of silicon gravure plates with distinct wettable (cells) and non-wettable (lands) regions.
Utilizing an aqueous silica ink formulation.

Keywords:

flexible electronics gravure printing nanoparticle inks printing wettability contrast

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Employing gravure printing to transfer the ink onto a substrate.

Main Results:

Successfully demonstrated ink removal from non-wettable lands without a doctor blade.
Achieved continuous printed lines as narrow as 1.2 μm.
Demonstrated precise line spacing of 1.5 μm.

Conclusions:

The engineered silicon gravure pattern effectively controls ink wetting and removal.
This method offers a viable alternative to doctor blade systems for high-resolution printing.
The technique is suitable for fabricating nanoscale features using aqueous inks.