A new wire grid polarizer is made through a series of nanofabrication steps. The visible light polarization effect will occur when natural incident light interact with the novel double layers metal nano‐grating structure on the surface of said polarizer. It gives very high extinction ratio and also no angular dependency. Theoretically, even the incident angle is over 75°, it still possible to give polarization extinction ratio over 5000:1. The feature sizes of the nano‐grating structures have major influence to the polarization states of the reflective and transmitting light. The materials compose the nano grating structure and the morphology also affects the polarization effect. A 5mm × 5mm sample was made and the results will present in this paper.

Polymerizable nematic liquid crystal (LC) was applied as resist for our newly developed nanoimprinting lithography process. The LC resist was self‐aligned during imprinting process at very low impriting pressure, 1.5 bar and the patterned area was able to achieve 4×4 cm2. The optical anisotropic was verified through polarized optical microscopy (POM). The various thickness of LC resist was evaluated and compared alignment ability with polyimide, and isotropic resists. The micro‐grated LC films prepared by this novel method offer new applications for liquid crystal as alignment layer within LC cells as well as preparation of optical anisotropic films.