The present invention relates to a quad flat non-leaded package comprising: a lead frame, a semiconductor chip, a plurality of connecting wires and a molding compound. According to some embodiments, an acoustic structure can generally comprise a phononic crystal slab configured as a micronano-acoustic wave medium. The dye is caused to be forcefully ejected from the dye release system, thereby contaminating the vest, the wearer, the assailant and the place where the assault took place.