Superior optical transparency of nano-grain magnesium aluminate spinel at high shock pressure

Xiuxia Cao, Qiang Wu, Maxim Sokol, Jianqi Qi, Yin Yu, Chuanmin Meng, Hongliang He, Chongyu Zhang, Jianbo Hu

Research output: Contribution to journalArticlepeer-review


Optical transparency is of paramount importance for visual armor and certain optical devices when subjected to severe impact conditions. Shock wave loading not only generates high pressure during hypervelocity impacts but also diminishes optical transmittance. To investigate optical transparency of transparent polycrystalline ceramic under harsh shock wave compression, this study performed experimental measurements considering the grain size effect. The findings, which pertain to polycrystalline magnesium aluminate spinel (PMAS), indicate that PMAS with nano-sized grains within the 900-1500 nm wavelength range demonstrates superior optical transparency compared to conventional PMAS with micrometer-sized grains. This result highlights the excellent optical properties of nano-grain transparent ceramics and raises hopes for their widespread application at high shock pressures.

Original languageEnglish
Article number054102
JournalApplied Physics Letters
Issue number5
StatePublished - 29 Jan 2024

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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