The present invention relates to means for cleaving a nucleic acid cleavage structure in a site-specific manner. The system also includes multiple nozzles coupled to the manifold, where each nozzle is coupled to the air tube and the water tube. With the bow held at full draw, the peep aperture and the central axis of the sight ring are substantially aligned along an intended sight line for the bow. Upon application of potential difference in the range of 7-9 kV, the substances may be dispensed directly, not through a collimating mask, onto a substrate with microhydrogel features functionalized with an anchoring agent. The open circuit voltage of the solar cell can be manipulated by choosing from among a wide selection of materials making up the thin conductor, the charge separation layer, and the back ohmic layer. The actuator and the motor are individually controlled.