—2D material has record-breaking thermal properties “Stacked molybdenum disulfide sheets rapidly dissipate heat within one layer but block heat transfer to other layers” A material made by stacking 2D sheets of molybdenum disulfude is a strong thermal conductor in two dimensions but blocks heat transfer from layer to layer.
by Katherine Bourzac | September 29, 2021
The UC Berkeley group, led by electrical engineer Ali Javey, made similar transistors, except they used molybdenum disulfide (MoS2) as the semiconductor (ACS Nano 2014, DOI: 10.1021/nn501723y). Their transistors have an electron mobility about 70 times higher than that of amorphous silicon devices.
by Prachi Patel, special to C&EN | May 08, 2014
A study has revealed that straining catalytic sites in molybdenum disulfide films substantially boosts the reaction rate of a key step in the water-splitting process relative to the rate on unstrained films (J. Am. Chem. Soc. 2016, DOI: 10.1021/jacs.6b01377). Splitting water could provide a nearly limitless supply of hydrogen to run clean-burning fuel cells if a suitable catalyst can be found.
by Mitch Jacoby | April 04, 2016
—Lithium-sulfur batteries benefit from MoS2 encapsulation “Coating sulfur particles with thin flakes of the dichalcogenide provides physical and chemical protection, leading to durable batteries” A simple procedure for wrapping sulfur particles in thin sheets of molybdenum disulfide may offer a way to capitalize on the promise of high-performance lithium-sulfur batteries, according to a study (J.
by Mitch Jacoby | July 17, 2017
By controlling the power and other properties of a narrow beam of laser light as it scanned the surface of a thin film of molybdenum disulfide (MoS2), Nicholas R. Glavin of the Air Force Research Laboratory, Christopher Muratore of the University of Dayton, and coworkers selectively modified the composition, crystallinity, and electronic properties of the film.
by Mitch Jacoby | January 30, 2021
—Breakthrough performance for 2-D material “Working transistor shows MoS2 can live up to its theoretical promise” A new design has enabled researchers to make the best-performing transistor yet from two-dimensional molybdenum disulfide. They say the results show the material has the right stuff to compete with silicon in the future—though many technological challenges still stand in its way (Nano Lett. 2016, DOI: 10.1021/acs.nanolett.6b02713).
by Katherine Bourzac, special to C&EN | September 28, 2016
Chip researchers have been experimenting with 2-D semiconductors, such as molybdenum disulfide or tungsten disulfide, which have higher electron mobility than silicon used in current transistors. To make super-small transistors with these semiconductors, chipmakers would also need a thin insulator.
by Neil Savage, special to C&EN | March 15, 2020