An electrostatic atomizer device comprises: a substrate 10; a thin-film N-type pattern 3 formed on the substrate 10, using an N-type thermoelectric material; a thin-film P-type pattern 4 formed on the substrate 10, using a P-type thermoelectric material; and an emitter electrode 6 connected between the N-type pattern 3 and the P-type pattern 4. Hole blocker layers and the electron blocker layers in the series circuit of mutually following adjacent photovoltaic cells are arranged in inverse succession relative to each other with respect to the carrier layer. The second pixel has a second photodiode and a second microlens which is formed above the second photodiode and is smaller than the first microlens. The gel-forming block copolymers can be used to prepare various biodegradable andor biocompatible hydrogel and organogel drug compositions, in particular antimicrobial andor anti-tumor drug compositions. Vehicle brakes may be automatically applied by the system to further slow the vehicle.