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This paper demonstrates sub-10-nanometer (nm) laser ablation on hard materials. An 800-nm-wavelength femtosecond laser is focused down to sub-diffraction-limited scale by a silicon nanophotonic structure fabricated on a silicon-on-isolator (SOI) substrate, which is utilized to enable the ablation on the silicon dioxide (SiO2) layer of the SOI. Atomic force microscopy (AFM) results show a minimum ablation...
Reported herein is a new method to produce artificial compound eyes, which involves a femtosecond laser fabrication and soft replication. A meso-scale hemispherical shell covered with 10,200 hexagonal-shaped and gapless microlenses is demonstrated.
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