https://www.selleckchem.com/btk.html We experimentally study the optical properties of Al-SiO2 hyperbolic metamaterials. The hyperbolic dispersion and ultrathin Al film ∼12nm make the Al-SiO2 multilayers possess transmission efficiency ∼0.3 for the spatial frequency ranging from k0 to 1.42 k0 at 363.8 nm illumination. The atomic concentration of 3% Cu-doping is experimentally demonstrated to obtain Al film ∼12nm with root-mean-square roughness ∼0.49nm. The fabricated Al-SiO2 multilayers combined with the optimized ZrO2 resonant grating with period 280 nm serves as a structured illumination device, which efficiently converts the P-polarized normal field to the spatial frequency 1.3 k0 structured field. The measured average transmission intensity of the ±1 order is ∼0.14, and the intensity ratio of the ±1 order and 0 order is ∼65. This Letter is promising for structured illumination, spontaneous emission enhancement, Cherenkov radiation, etc.Recent progress has enabled the reconstruction of the local (i.e., depth-resolved) optic axis (OAx) of biological tissue from measurements made with polarization-sensitive optical coherence tomography (PS-OCT). Here we demonstrate local OAx imaging in healthy human skin in vivo. The images reveal dense, weaving patterns that are imperceptible in OCT intensity tomograms or conventional PS-OCT metrics and that suggest a mesh-like tissue organization, consistent with the morphology of dermal collagen. Using co-registered polarization-sensitive optical coherence microscopy, we furthermore investigated the impact of spatial resolution on the recovered OAx patterns and confirmed their consistency. OAx orientation as a contrast mechanism merits further exploration for applications in dermatology.TE/TM-pass polarizers based on the lithium niobate-silicon nitride hybrid platform are numerically proposed for the first time, to the best of our knowledge. By utilizing the lateral leakage of a shallowly etched rib waveguide, 1-mm-long TE/TM-pa