Post #1785636

Anyone tried to DIY some TGVs yet? "Heating [Schott’s FOTURAN II photosensitive glass] to 500–600 °C causes doped Ag+ within the glass to absorb electrons and convert into silver atoms, becoming a nucleation center to develop lithium metasilicate crystals (L⁢i2⁢S⁢i⁢O3). The hydrofluoric acid etching rate of L⁢i2⁢S⁢i⁢O3 reaches 20–50 times higher than that of the unaffected zone, enabling the selective etching of the glass and unveiling microstructures like vias [41]." https://www.mdpi.com/1424-8220/24/1/171