It is a good idea to use quality paper with them as the colour from the markers can go through thin paper and ruin your designs. This technique is used to show light and dark areas using dots.

Researchers transformed red marker ink into graphene-based circuits using a laser, enabling low-cost, flexible electronics on ...

MArkable's E Ink tablet is an ideal way to capture ideas and write, whether you're jotting down notes or typing up the first ...

Using lasers, researchers have transformed the ink of a red marker pen into a graphene-based electrical circuit. This ...