Atomic Pen Writes World’s Smallest Possible Letters
Researches at Osaka University have been doing some really tiny writing later, using their newly-invented atomic pen, which can draw atom by atom. The resulting letters, the words “Si” for silicon or “Yes” in Spanish, measure only 2 x 2 nanometers, roughly 40,000 times smaller than the width of a human hair. According to Masayuki…