A method of forming raised SD regions by partial EPI growth with a partial EPI liner therebetween and the resulting device are provided. In a second step, the flanks of the metal parts, which delimit the narrow gap, are joined together by welding beads which fill the narrow gap, with a predetermined melt-through point being formed. The zeolite comprises in particular a zeolite of type A, in particular a zeolite 4A or 3A. The electronic devices interface to the optical fibers through the transparent substrate. Any of the devices can be loaded with biologics.