Micro-texturing channel surfaces on glass with spark assisted chemical engraving

Micro-texturing of glass micro-channel surfaces during machining by spark assisted chemical engraving (SACE) technology is reported. A range of surface textures is obtained from feathery-like to porous spongy-like textures. It is demonstrated that the texture formed on the channel surface is a mimic of the electrolyte flow patterns induced during machining. The electrolyte viscosity is found to be the most significant factor influencing the …