A macromolecule including a polymer and a polyhedral radical chemically bonded to a terminus of the polymer provides numerous processing and performance advantages. There is provided a system comprising a memory and a processor. The sensed charge is used to obtain at least one signature of the image scene. Related methods of operation are also discussed. A freely sliding element, such as a ball, may be placed in each of the conduits to isolate the two fluids from each other. When in the locked position, the wheel cannot turn on the vertical axle but only rotates with the horizontal axle in a certain direction.