Wide‐Field and Real‐Time Super‐Resolution Optical Imaging By Titanium Dioxide Nanoparticle‐Assembled Solid Immersion Lens (Small 23/2023)

Solid Immersion Lens In article number 2207596, Zushun Xu, Jing Zeng, Wen Fan, and co-workers report a TiO2 nanoparticle-assembled solid immersion lens (SIL) with excellent transparency, high refractive index and easy-to-handle size. This TiO2 SIL can provide a fast, wide-field, real-time, non-destructive and low-cost solution for improving the quality of optical microscopic observation of various samples, including nanomaterials, living cells or bacteria, and cancer cells.