Dual Nature of Matter

The whole energy in this universe is in the form of matter and electromagnetic energy. Radiation behave as both as wave and particle. Radiation wave nature is describes by interference, diffraction, polarization etc .Radiation particle character is described by photoelectric effect, Compton effect etc. the nature loves symmetry. As the radiation got dual nature, matter should also posses dual nature.
Thus a wave is associated with energy moving particle. These waves are called de Broglie waves or matter waves. Electron has particle nature. But Davisson and Germer experiment proved the wave nature of electron also.