![]() We have not yet packed these transistors onto a chip, and we haven’t done this billions of times over.” “This work demonstrated the shortest transistor ever,” Ali Javey, a professor of electrical engineering and computer sciences at the University of California, Berkeley. While the feat is impressive, and the technology promising, researchers say there is much work to do. A single strand of human hair measures roughly 50,000 nanometers across. In fact, Desai and his research partners built a transistor with a 1-nanometer gate. With MoS2, scientists were able to make the gate - and the transistor - much smaller without making susceptible to gate-crashing electrons. When electrons are out of control, transistors leak energy. “This means we can’t turn off the transistors,” Sujay Desai, a graduate student at the Department of Energy’s Lawrence Berkeley National Laboratory, explained in a news release. But because silicon allows for such a free flow of electrons, the particles barge through the doors when the gate becomes too small. Transistors rely on a gate to control the flow of electricity through its terminals. ![]() But electrons don’t move as easily through MoS2 as they do through silicon. Like silicon, MoS2 boasts a crystalline lattice structure. Molybdenum disulfide, or MoS2, is an engine lubricant that scientists believe has tremendous potential in the field of electronics. The combination belongs to a class of materials called transition metal dichalcogenides, or TMDs. Recently, a team of scientists set a new record for world’s smallest transistor using a pair of novel materials, carbon nanotubes and molybdenum disulfide. To keep the trend going, scientists have turned to silicon alternatives. But silicon transistors can’t get much smaller. ![]() Silicon transistors have been getting smaller and smaller, packing more computing power into smaller dimensions all while using less energy.
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