Not trying to argue but sound is a wave. When a wave hits a boundary only two things can happen. Part of that wave can be transmitted (absorbed) and part of the wave can be reflected. (There is also diffraction if the object/boundary is about the same size as the wavelength) Of course sound (that we can hear) spans a range of frequencies from 20Hz to 20kHz. The percent of the wave that is absorbed vs reflected is a function of frequency depending on what the material the surface is made from. If none of the sound is reflected then it is all absorbed and that is an anechoic chamber. When a wave strikes an uneven surface then the wave will be redistributed in time/space. This is diffusion. The science behind diffusers is to construct that surface such that it produces the most even polar response across a certain range of frequencies.
Now, that wave is made up of trillions of particles (Mostly nitrogen and oxygen molecules) but as I discussed there is nothing these panels are doing that would necessitate or involve quantum mechanics calculations.
I stated above. I don't doubt that their product works and it even looks great. And I think the price is reasonable. But without acoustic data I am not going to believe that it will fix issues below even 200Hz. I don't have to have certified acoustics lab data. I will take REW data from someone's room before and after install. This is not hard to do so why isn't the manufacturer publishing it?