electrospun glass nanofiber-reinforced polylactic acid into delignified wood toward photoluminescent and mechanically reliable smart window. Imagine you're sitting by your new window. By day, it's just letting in sunlight, being all transparent and innocent. Come night, you flip a UV switch, and bam! Your window is now a glowing beacon, turning your living room into the coolest rave in town, except instead of bouncers, you've got enhanced hydrophobicity keeping the uninvited water at bay. And if that's not enough, it's also saving your furniture from the UV rays, like a transparent, photoluminescent superhero.