An aspect of the subject technology/invention of the present disclosure includes electrode structures or elements/components that have (e.g., present) fractal and/or self-complementary shapes or structures, e.g., on a surface. Such shapes or structures can be pre-existing. The electrodes can be made of any suitable material. The electrodes may function or operate or be used as a “seed” structure to incorporate or receive a material or materials useful for lattice assisted nuclear reactions and/or cold fusion processes.