We present a study of 43 000 3-jet events from Z° boson decays. Both the measured jet energy distributions and the event orientation are reproduced by second order QCD. An alternative model with scalar gluons fails to describe the data.

Two-dimensional layered transition-metal dichalcogenides have drawn enormous interest because of their desired electrical and mechanical properties for making various devices with attractive functions. However, the device fabrication process typically introduces lithography-induced contamination and damage to such fragile and sensitive atomically layered materials. Here, we present a multiplexing lithography process system capable of directly generating few-layer molybdenum disulfide (MoS2) feature arrays with no need of additional lithographic or etching steps. This process combines a site-selective growth scheme based on mechanically generated triboelectric charge patterns and programmable actuation of rubbing templates bearing 2D feature arrays. To achieve a good processing uniformity, we have systematically investigated the effects of implementation of an air cushion on the rubbing template, various interfacing layers on the rubbing features, as well as mechanical load on rubbing templates and substrates. Using this process, we have demonstrated the growth of “L” shaped few-layer MoS2 arrays on SiO2/Si substrates with a good yield.

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Using the data collected with the L3 detector at LEP between 1990 and 1995, corresponding to an integrated luminosity of 149 pb 1 , the longitudinal polarisation has been measured as a function of the production polar angle using the decays ! h (h = ;;a 1

Gilding is the ancient process of coating intricate artifacts with precious metals. Fascinating Egyptian and Chinese sculptures, coated with <200 nm thin metal films by this process, have resisted corrosion, wear, and other environmental degradations for thousands of years. Here, 150 nm thin palladium leaves are enriched by doped with a single layer of graphene. Commercially available Pd leaves are uniquely suited for graphene synthesis by a highly dynamic chemical vapor deposition process. The Pd leaves made by high strain rate beating are stable at high synthesis temperature, resisting solid-state dewetting owing to their extremely low grain triple junctions density (0.017 µm −1 ). Mathematical models of growth kinetics guide the development of extremely rapid synthesis conditions, resulting in the formation of high-quality graphene on Pd in less than a minute, owing to the graphene grains growing twice as fast as copper-catalyzed growth. The graphene monolayer on the leaf increases the effective surface modulus by 59% to 236 GPa. Uniaxial strain testing with Raman spectroscopy reveals the excellent crystallinity of graphene by probing the stress-induced phonon shifts. This new material could open exciting opportunities in utilizing highquality 2D materials to coat large structures.