Abstract
Metasurfaces possess the capability to manipulate multi aspects of light and have been used to demonstrate wavefront engineering devices. In this project, we choose Huygens’ metasurfaces with high efficiency and small thickness to wavelength ratio to achieve wavefront shaping. Overlap of electric and magnetic resonances in titanium dioxide nanodisk employs Huygens’ condition which gives our device a full phase coverage and close unity transmission in UV. Such properties enable an efficient light focusing flat optical device.