Abstract: Embodiments of the present disclosure pertain to compositions that include a metal-organic framework. The metal-organic framework includes a plurality of metals and a plurality of ligands coordinated with the plurality of metals, where the plurality of metals include bismuth, and the plurality of ligands include a plurality of hydroxy moieties that are not part of carboxyl groups. At least some of the hydroxy moieties are coordinated with bismuth to form Bi—O bonds. The metal-organic framework is in the form of a conductive and interconnected network. Additional embodiments of the present disclosure pertain to methods of utilizing the compositions to detect analytes in a sample and shield various objects from radiation.

Abstract: A clutch assembly for transmitting power from an output shaft of an engine to an input shaft of a gearbox includes annular friction surfaces on at least one of the flywheel and the pressure plate. The annular friction surface has a plurality of grooves that extend across the annular friction surface away from an inner rim of the friction surface toward an outer rim of the friction surface to prevent a reduction in friction caused by outgassing or abraded particles trapped between engaging friction surfaces.

Abstract: A clutch assembly for transmitting power from an output shaft of an engine to an input shaft of a gearbox includes annular friction surfaces on at least one of the flywheel and the pressure plate. The annular friction surface has a plurality of grooves that extend across the annular friction surface away from an inner rim of the friction surface toward an outer rim of the friction surface to prevent a reduction in friction caused by outgassing or abraded particles trapped between engaging friction surfaces.