title: Diffraction of 0.5keV electrons from free-standing transmission gratings.
abstract: A nanostructured grating was used to diffract a low-energy (500 eV) electron beam, and the current transmitted into the zeroth diffraction order was greater than 5% of the incident beam current. This diffraction efficiency indicates that the 55-nm-wide grating bars absorb electrons but the 45-nm-wide slots between bars transmit electron de Broglie waves coherently. The diffraction patterns can be asymmetric, and can be explained by a model that incorporates an electrostatic potential energy for electrons within 20 nm of the grating structure calculated by the method of images.
authors.affiliation: Department of Physics, University of Arizona, 1118 E. 4th St, Tucson, AZ 85721, USA. mcmorran@physics.arizona.edu
authors.forename: Ben
authors.initials: B
authors.lastname: McMorran
authors.forename: John D
authors.initials: JD
authors.lastname: Perreault
authors.forename: T A
authors.initials: TA
authors.lastname: Savas
authors.forename: Alex
authors.initials: A
authors.lastname: Cronin