光觸媒，即是「以光為催化劑，在吸收光的能量後，能夠發揮觸媒特性的物質」。將本系比喻為光觸媒，共同發揮出更大的能量，激盪出與觀者之間的化學反應。
LIGHT • CATALYST is "a substance that uses light as a catalyst and can exert catalytic properties after absorbing the energy of light."
Compare the department to a photocatalyst, which together exert greater energy and stir up a chemical reaction with the viewer.
