A phosphor compliant with formula below and a perovskite structure containing samarium :. In MxCy M is Cr, Fe, Ni, Co, Si, Ti, Zr, Hf, V, Nb, Ta, Mo or mixtures thereof, x and y are whole or fractional numerical values with x ranging from 1 to 30 and y from 1 to 6. The fine holes are open at the surface of the dielectric base material, and are substantially uniformly provided therein. The time-span code reflects the amount of time that separated the first input-event signal from the second. A probe tip of an atomic force probe tool is landed on a portion of the structure and used to electrically characterize a device structure connected with the conductive feature. The overlays are specially located and structured to provide the shaft with structural and tactile features that correspond to and accommodate the way in which a player moves his hands along the shaft and grips the shaft.