A block of balsa wood, chemically hollowed out and packed with heat-trapping compounds, can soak up sunlight during the day ...

A team at Nanjing Forestry University has turned balsa wood into a solar heat battery. By infusing lightweight balsa ...

Stearic acid is a fatty acid derived from nature. It acts as the phase-change material. When the sun hits the black phosphorene, the wood heats up. The stearic acid melts, locking away vast amounts of ...