A display apparatus includes an electromagnetic radiation source and digital micro-mirror device having a plurality of micro-mirror elements on a surface thereof. Fluorophore-containing polymers, possessing one or more basic functional groups, underwent protonation in the presence of a photoinduced acid generator upon exposure to a broad-band UV light source or fast-pulsed red to near-IR laser irradiation. The control signals are generated within the control portion and wherein at least one of the control signals comprises displacement of hydraulic fluid.