The pore size obtained in Vycor glass can be modified by varying the demixing temperature: At low
temperatures (< 500 °C), pore diameters down to 50 nm can be obtained, while at higher
temperatures (700 °C) pore diameters above 100 nm were observed with BET and SEM.
Furthermore, the pore content and the structure can be tuned by varying the stoichiometry of the
original glass, and the pore surface can be modified by the leaching process. These effects were
investigated in detail and several production methods for Vycor glass powders were defined.