For when you have very little to say...Researches at Osaka University have been doing some really tiny writing using their newly-invented atomic pen, which can draw atom by atom. The resulting letters, the letters "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 project scientists, they have reached a limit impossible to surpass. In fact, they actually said, "It’s not possible to write any smaller than this".
They achieved the atomic pen using the tip of an atomic force microscope, which interacts with the surface of a semiconductor when it's near it by exchaging silicon atoms. According to the scientists, this is a new step towards the miniaturization of chips, which will eventually take us to impossibly-small computers. And very hard to read curse words and graphitti.
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