A method of fabricating a solar cell involves electroplating a Group IIB-VIA material as a first or sub-layer over a junction partner layer, and then forming a second layer, also of a Group IIB-VIA material over the sub-layer. By compaction of cladding material in a compaction area next to patterns or ridges that are formed in the core material for realizing an optical waveguiding structure, the effective index of refraction of the optical waveguiding structure can be trimmed. , a polymerase or TdT, with a nucleotide substrate under conditions suitable for enzyme activity; and modulating the conformation of the enzyme, e. The located block is rotatably engaged in the mounting portion. The lateral acceleration is compared to an acceleration threshold value.