These efforts have resulted in the field of optics to go beyond the classical Rayleigh limit reaching the nanometer range and in the electron microscopy to resolutions of the order of atomic distances.
His fundamental research is widely used for 3D reconstruction, and stress and strain analysis.
Sciammarella generalized the concept of fringe order in methods that measure displacements using Fourier analysis in the process of formation of the fringe images.
He proved formally that the orders could be represented by real numbers instead of integers as it was usual at the time of his publication.