With the advent and proliferation of tablets, using a pen to annotate or even sketch is becoming more and more useful, if not necessary. Enter the Space Pen. Now, you can sketch or annotate 3D models ...

Researchers have developed an automatic drawing machine that uses pens and pencils to draw metamaterials -- artificially engineered composite materials that derive their properties from patterned ...

WASHINGTON — Researchers have developed an automatic drawing machine that uses pens and pencils to draw metamaterials onto paper. They demonstrated the new approach by using it to make three ...