Four slits interference and diffraction experiments

By means of a focused ion beam apparatus slits about 90nm in width, 1500nm in length and with a pitch of 430nm were prepared on a gold film of 100nm in thickness. The diffraction and interference experiments carried out in a transmission electron microscope equipped with a field emission gun are an amazing and impressive demonstration of the wave behaviour of the electrons. & 2009 Elsevier B.V. All