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Liao and the team used a green 532-nanometer (nm)-wavelength laser to inscribe 3D patterns into tiny slabs of the doped glass. The intricate patterns, randomly chosen dots, symbols, QR codes, ...
Liao and the team used a green 532-nanometer (nm)-wavelength laser to inscribe 3D patterns into tiny slabs of the doped glass. The intricate patterns, randomly chosen dots, symbols, QR codes ...
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