The CASIMIR Effect
With an experiment, Hendrik CASIMIR found in 1948 that two uncharged conductive metal plates very close together cause some of the vacuum waves to be excluded. This attracts the plates. The CASIMIR effect is into vacuum waves.
Gerald MOORE in 1970 shows a similar dynamic effect with a moving mirror of high-frequency oscillations. With this experiment photons became real particles.
These two experiments do not make it possible to create free energy. However, following these experiments, research is being carried out on the creation of free energy from a vacuum.