Nanowire grid polarizer and method of preparing the same

A method of preparing a nanowire grid polarizer, the method comprising:

• mixing a poly(alkylene oxide) triblock copolymer surfactant with a hydrophilic head region and a hydrophobic tail region and a silica precursor to prepare a mesoporous film composition;
• coating the mesoporous film composition on a substrate;
• aging the coated film to form a silica template composite;
• removing the surfactant inside the silica template composite to prepare a mesoporous material having channels, the channels being laterally aligned to have a hexagonal array;
• and
• filling the channels of the mesoporous material with metal, thereby producing the nanowire grid polarizer including a plurality of nanowire array layers,
• wherein each of the nanowire array layers includes a regular array of a nanowire-shell structure consisting of a nanowire of the metal as a core and a silica shell in which the nanowire is separated from another nanowire by the silica shell, thereby when an incident light including a first polarized light and a second polarized light is irradiated onto the nanowire grid polarizer, the nanowire grid polarizer transmits the first polarized light but reflects the second polarized light using the metallic nanowire as a lattice.