Conductive ink is a great tool for printing flexible electronic circuits on surfaces. But these inks can be costly, they do not work on some materials, and devices to apply them can plug up. Now, ...

Pen and ink floral doodles meet splashy loose watercolors! My classic mixed media botanicals are fun to create and lovely to look at. Pens + Paints: Derwent Graphik Black Line Markers: <a href=" ...

A handful of stencils and three pens sound like materials for a child's art project. But researchers have now used these tools to draw functional health monitors directly on human skin. A team led by ...