Room-Temperature Molding of Complex-Shaped Transparent Fused Silica Lenses

Ya Xu, Xiaotong Du, Zhenhua Wang, Hua Liu, Peng Huang, Suet To, Li Min Zhu, Zhiwei Zhu (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review


The high hardness, brittleness, and thermal resistance impose significant challenges in the scalable manufacturing of fused silica lenses, which are widely used in numerous applications. Taking advantage of the nanocomposites by stirring silica nanopowders with photocurable resins, the newly emerged low-temperature pre-shaping technique provides a paradigm shift in fabricating transparent fused silica components. However, preparing the silica slurry and carefully evaporating the organics may significantly increase the process complexity and decrease the manufacturing efficiency for the nanocomposite-based technique. By directly pressing pure silica nanopowders against the complex-shaped metal molds in minutes, this work reports an entirely different room-temperature molding method capable of mass replication of complex-shaped silica lenses without organic additives. After sintering the replicated lenses, fully transparent fused silica lenses with spherical, arrayed, and freeform patterns are generated with nanometric surface roughness and well-reserved mold shapes, demonstrating a scalable and cost-effective route surpassing the current techniques for the manufacturing of high-quality fused silica lenses.

Original languageEnglish
Article number2304756
Number of pages10
JournalAdvanced Science
Issue number34
Publication statusPublished - 6 Dec 2023


  • fused silica lenses
  • mass production
  • organic-free
  • room-temperature molding

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • General Chemical Engineering
  • General Materials Science
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • General Engineering
  • General Physics and Astronomy


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