Process to prepare a water-white lubricating base oil having a saturates content of more than 90 wt %, a sulphur content of less than 0. The substrate has a surface, and the structure is coupled to, and movably suspended above, the substrate surface. This apparatus yields a modified set of measurements that can provide a stable embedding of the set of signals of interest, in which case it is guaranteed that the processed measurements retain sufficient information to enable the direct recovery of this signal of interest, or alternatively to enable the use of efficient compressive-domain algorithms for further processing. The family may provide NOR, NAND, OR, and AND.