Abstract
Despite many attractive properties and well-developed micro/nano manufacturing technologies based on silicon (Si) wafers, severe adhesions between Si and glass at high temperature have limited its application as a mold material in precision glass molding. In this Letter, a coating using carbide-bonded graphene is introduced to build nonstick Si molds for glass molding. The coating has extraordinary mechanical properties and can effectively prevent Si-glass adhesion under high temperature. We demonstrated fabrications of a Fresnel lens and glass parts with micrometer pillars using graphene-coated Si molds. This newly developed process enables the use of Si as a mold material to fabricate sophisticated structures with high-precision dimensions that was not previously available. This technology will greatly improve precision glass molding process and allow high-precision low-cost glass optics to be manufactured in large quantity.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Lin Zhang, Wenchen Zhou, and Allen Y. Yi
Opt. Lett. 42(7) 1369-1372 (2017)
Yingying Zhang, Rongguang Liang, Oliver Joshua Spires, Shaohui Yin, Allen Yi, and Tom D. Milster
Opt. Lett. 45(23) 6438-6441 (2020)
Lin Zhang and Allen Y. Yi
Opt. Express 29(19) 30761-30771 (2021)