For decades, chipmakers have chased smaller and smaller transistors. But silicon — the material at the heart of every chip — has physical limits. With chips, going smaller and smaller becomes more and more difficult.
IBM (IBM) has just taken a big step forward in that regard. On June 25, the company unveiled the world's first sub-1 nanometer chip technology, operating at the 0.7-nanometer (7 angstrom) node. Here's what investors should know.