background: a substantial part of the public’s natural radiation dose is due to the inhalation of radon gas. most of the exposure occurs indoors where the airborne concentration of radon and its decay products is usually higher than outdoors. materials and methods: radon activity concentration has been measured twice in 50 classrooms in 5 levels (10 each) during summer and winter using solid-st...

This review reports progress in solid electrolytes integrated into all-solid-state 2D and 3D lithium-ion microbatteries. The latest improvements, performance challenges of the structured microbatteries are analyzed.