Metamaterials Enable Semiconductor-free Microelectronic Device

The first ever semiconductor-free, optically-controlled microelectronic device has been developed by engineers at the University of California San Diego. The team used metamaterials to build a microscale device that has a 1,000 percent increase in conductivity when activated by low voltage and a low power laser. The breakthrough basically amounts to a modern-day vacuum tube in nanoscale, paves the way for microelectronic devices that are faster and capable of handling more power, and could lead to more efficient solar panels. [Read More]

Environment-Controlled Dislocation Migration And Superplasticity in Monolayer Molybdenum Disulfide

What would happen if peanut brittle, under certain conditions, acted like taffy? Something similar to that happens to a two-dimensional dichalcogenide analyzed by scientists at Rice University. Rice researchers calculated that atomically thin layers of molybdenum disulfide can take on the qualities of plastic through exposure to a sulfur-infused gas at the right temperature and pressure. This means you can deform it without breaking it, a property many materials scientists who study two-dimensional materials should find interesting, according to Rice theoretical physicist Boris Yakobson and postdoctoral researcher Xiaolong Zou; they led the study that appeared in the American Chemical Society journal Nano Letters. [Read More]

Rhenium Disulfide latest Two-dimensional Semiconductor Discovery

Researchers at Lawrence Berkeley National Lab’s Molecular Foundry have discovered a novel new two-dimensional semiconductor, rhenium disulfide. As opposed to molybdenum disulfide and other dichalcogenides, rhenium disulfide acts electronically like a 2D monolayer, even as a 3D bulk material. The unique properties of rhenium disulfide open the way to 2D electronic applications with a 3D material. It also makes it possible to study 2D physics with easy-to-make 3D crystals. From super-lubricants, to solar cells, to the fledgling technology of valleytronics, there are many potential applications of the discovery. [Read More]

Alternate Materials Based Chips Could Someday Operate 1000 Times Faster than Todays Silicon Chips

The fastest-possible electrical switching in magnetite, a naturally magnetic mineral has been clocked by researchers from the SLAC National Accelerator Laboratory. The results may push innovations in transistors used for controlling the flow of electricity across silicon chips and enable faster, more powerful computing devices. Using SLAC’s Linac Coherent Light Source (LCLS) X-ray laser, researchers found that it takes only 1 trillionth of a second to flip the on-off electrical switch in samples of magnetite, which is thousands of times faster than in transistors now in use. [Read More]

IBM’s Silicon Nanophotonics Integrates Optical and Electrical Circuits on Single Chip

IBM’s silicon nanophotonics technology, the subject of more than a decade of research, has demonstrated the technology is now ready to for development of commercial applications. Using sub-100nm semiconductor technology, silicon nanophotonics enables integration of different optical components side-by-side with electrical circuits on a single silicon chip. IBM’s new technology uses pulses of light for communication. It provides a pipeline for large volumes of data to move quickly between computer chips in large datacenters, servers, and supercomputers, as a result easing limitations on clogged data traffic and traditional high-cost interconnects. [Read More]