title: Fabrication of co-axial field emitter tips for scanning probe energy loss spectroscopy.
authors.affiliation: Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
authors.forename: Mi Yeon
authors.initials: MY
authors.lastname: Song
authors.forename: Alex P G
authors.initials: AP
authors.lastname: Robinson
authors.forename: Richard E
authors.initials: RE
authors.lastname: Palmer