Current railway track condition monitoring relies on inefficient human inspectors and expensive inspection vehicles, where high-frequency inspection is unreachable since these methods occupy the ...

A compact flywheel is involved in generation of free energy. The kinetic energy storage flywheel is designed to attach it to an electric machine. The mechanical bearings and belt drive support the ...

State-of-the-art perovskite–perovskite tandem solar cells incorporate a water-based poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) hole transport layer in its low bandgap subcell.