Starbucks faces weak growth, macro pressure, and uncertain technicals despite long-term initiatives aimed at recovery. Check ...

With higher efficiency and lower costs, perovskite–silicon tandem cells mark a breakthrough in solar tech. Can they truly ...

Asymmetric two-dimensional (2D) electromagnetic band gap (EBG) waveguide with hexagonal lattice is theoretical investigated. The EBG cavity is made of metal rods with hexagonal lattice, which has an ...