For decades, researchers have been exploring how to store data in glass ... Direct 3D Lithography of Reversible Photochromic Patterns with Tunable Luminescence in Amorphous Transparent Media ...

Liao and the team used a green 532-nanometer (nm)-wavelength laser to inscribe 3D patterns into tiny slabs of the doped ... appear purple in the transparent glass, which turns other colors when ...

Liao and the team used a green 532-nanometer (nm)-wavelength laser to inscribe 3D patterns into tiny slabs ... appear purple in the transparent glass, which turns other colors when excited at ...