The pen’s body is molded, and then the ink, made using a blend of pigments and solvents, is carefully formulated and filled into each pen. Once assembled, each pen undergoes rigorous testing to ...

Although it is a pen and ink show, works won't only be in black and white. Many are painted or washed with watercolors. They will employ a variety of techniques, including cross-hatching ...

However, it's difficult to make ballpoint pens that maintain good circuit-writing performance because the tips can clog ... design a cheap and effective pen-and-ink system. Building on prior ...

The ink can be spread into a cut of any shape using a 3D-printing pen, and in mice ... blood vessels and eventually forming a scar. Many techniques used to heal wounds can't do much beyond ...