Graphene could replace rare metal used in mobile phone screens

Jan 07, 2022 (Nanowerk News) Researchers from Paragraf and Queen Mary University of London demonstrated the successful fabrication of an Organic Light-Emitting Diode (OLED) with a monolayer graphene anode, replacing ITO in organic light-emitting diodes (Advanced Optical Materials, "Wafer-Scale Graphene Anodes Replace Indium Tin Oxide in Organic Light-Emitting Diodes"). Indium...

Exploration of new frequency frontiers

Jan 07, 2022 (Nanowerk News) When matter is irradiated by ultrashort laser pulses, excited electrons scatter on femtosecond timescales. A femtosecond is a millionth of a billionth of a second. Information about the scattering and other fast processes in the material can be extracted from the wave characteristics of transmitted...

Light-matter interactions at the atomic scale simulated on the world’s fastest supercomputer

Jan 07, 2022 (Nanowerk News) Light–matter interactions form the basis of many important technologies, including lasers, light-emitting diodes (LEDs), and atomic clocks. However, usual computational approaches for modeling such interactions have limited usefulness and capability. Now, researchers from Japan have developed a technique that overcomes these limitations. In a study...

Nematicity is a new piece in a phase diagram puzzle

Jan 06, 2022 (Nanowerk News) Although twisted sheets of double bilayer graphene have been studied extensively the past few years, there are still pieces missing in the puzzle that is its phase diagram—the different undisturbed, ground states of the system. Writing in Nature Physics ("Moiré nematic phase in twisted double...