Tuning the asymmetric response of metasurfaces for optical spatial filtering Topological-darkness-assisted phase regulation for atomically thin meta-optics Investigation and optimization of reactive ion etching of Si3N4 and polyphthalaldehyde for two-step gray scale fabrication of diffractive optics Vertical Waveguide Arrays as Wavelength Selective Nanostructured Silicon Photodetector Pixels Ultracompact Camera Pixel with Integrated Plasmonic Color Filters Mid- to long-wave infrared computational spectroscopy using a subwavelength coaxial aperture array Laser-inscribed stress-induced birefringence of sapphire Hybrid refractive-diffractive microlenses in glass by focused Xe ion beam Metamaterial Lensing Devices Ultimate limitations in the performance of kinoform lenses for hard x-ray focusing