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New laser printer techniques carve germanium pillars on plastic surfaces

Tinuku ~ Researchers at the Technical University of Denmark in Kongens Lyngby developed new printer to create color by forming nanostructures. New printing technique without using ink to produce lasting colors, the laser composes small plastic germanium pillar to create brown, red and blue palette.

Tinuku New laser printer techniques carve germanium pillars on plastic surfaces

The researchers report new printing technology to Science Advances using laser printers to compile germanium nano to create browns, reds and blues. The new technique produces three color components, but further improvement is likely to produce an entire rainbow component.

Anders Kristensen and colleagues designing laser printing techniques requiring only three materials are plastics, germanium and protective layers. Ink-based printing uses paper media, while this method uses plastic media.

The plastic surface has many small pillars in 200 nanometers and the laser heat melts the germanium on each pillar, shaping and adding surfaces as a film to emit certain color, while the layers protect the shape of the nanostructure that has been carved.



The germanium film enhances the color resolution to produce images at resolutions up to 127,000 dots per inch (dpi), whereas traditional laser printers use toner powder only capable of about 20,000 dpi and ink-jet printer of about 4,800 dpi.

Tinuku.com New laser printer techniques carve germanium pillars on plastic surfaces

Kristensen and colleagues are able to create images of 50 x 50 micrometers and produce 3D displays in the reflected light polarization of surface structure. Polarization can also be to hide information in germanium films as encryption such as watermarks.
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