Electron scattering 1 Electron wave functions 1 Electrons 1 Free electron 1 Gold nanoparticle 1 Gold nanoparticles 1 Interference signal 1 Interferometric imaging 1 Interferometry 1 Mach Zehnder interferometry Mach-Zehnder interferometers 1 Scanning electrons 1 Scattered electrons 1 Signal interference 1 Transmission electron 1 Transmission electron microscopy 1 Two paths 1 Wave functions 1