The neutrino is not part of the EM spectrum, or EM itself. Only the photon is.
What you need to research Alex is quantum mechanics as the concept of matter having a wavelength and wave/particle duality is a quantum thing, but you have to appreciate what is meant by wavelength. In the quantum sense, it's the spread of the wavefunction.
Try this site:
http://physics.about.com/od/quantump...um_Physics.htm
Andrew.