Negative Goos–Hänchen shifts with nano-metal-films on prism surface

In recent years, the fantastic phenomena of negative Goos–Hänchen shifts have been studied in several optics experiments with the positive-refractivity materials. The phenomena were predicted by many scientists with either classical physics or quantum physics theory. In order to verify the negative Goos–Hänchen shifts phenomena, experiments in microwave frequencies were done with nano-metal-films on the prism surface. Because the use of nano-metal-films enhances the self-interference effect, not only were the negative Goos–Hänchen shifts observed, but also the giant Goos–Hänchen shifts appeared.