Design and fabrication of complex quartz glass samples with a negative Poisson's ratio effect

High-purity and high-transparency quartz glass(Hereinafter referred to as quartz glass) is an amorphous material with significant potential in industries such as automotive and aerospace. However, its high brittleness leads to low tensile strength and impact toughness, making it challenging to apply in specialized fields. Auxetic structures are a type of metamaterial with extraordinary mechanical properties, but the corresponding optimization processes have not been fully established. This study proposes the use of topology optimization to achieve controllable auxetic structures, combined with photopolymerization techniques to fabricate high-purity and high-transparency quartz glass samples.The results show that the error of auxetic structures achieved through topology optimization is within 5%, and the fabricated samples exhibit performance close to the international standard ISO 3585, with significantly improved mechanical properties compared to conventional structures.