How Thick Is Extra Thin For Electronics? It’s One Molecule.
Researchers at MIT have employed a two-dimensional variant of molybdenum disulfide (MoS2) to build electrical circuits. Being a natural semiconductor molybdenum disulfide is perfect for making transistors. The list of circuits so far produced by MIT team with molybdenum disulfide is inspiring, among which are: an inverter circuit, a ring oscillator made of twelve transistors, a memory device and NAND gates. To create all those and potentially much more, as a few molecules thick TV screens, devices woven into fabric etc. the MIT postdoctoral student Yi-Hsien Lee had to learn the way to implement a chemical vapor deposition process to produce large sheets of molybdenum disulfide. Those mechanically produced flakes of the material can potentially make light emitting walls and transparent optical displays sprayed onto surfaces happen soon.