The actual discovery is reported in one of the last paragraphs: >The breakthrough relates to a new set of materials that can create monolayer—or two-dimensiona

The actual discovery is reported in one of the last paragraphs: >The breakthrough relates to a new set of materials that can create monolayer—or two-dimensional (2D)—transistors in a chip to scale the overall density by a factor matching the number of layers. The teams at TSMC and MIT have demonstrated low resistance ohmic contacts with a variety of existing semiconductor materials, including molybdenum disulfide (MoS2), tungsten disulfide (WS2), and tungsten diselenide (WSe2). So it is a better way to make a contact to a semiconductor material that noone knows how to manufacture reliably on a large area wafer.