Disclosed herein is a composition for solar cell electrodes. One embodiment of the current diverter is substantially arc shaped with a plurality of radial channels extending there through. The supporting member is pivotally secured to the handle member. The second antenna element may be configured as a wire filament in the form of a copper trace carried by a printed circuit board. Metal sheet electrodes of electric field sensors are mounted on the surface of a tubular nose extending outwardly from the housing. Modulators, such as UTP analogues as described herein are preferably specific for P2Y2.