In the double slit experiment for electrons, what are the materials used for the detection screen? for example, what material is used as the detection screen for electrons. What materials can be used when conducting the experiment to be able to see the detected electrons on the detection screen?
 A: In these italian experiments, there is no slit but a electron beam divider, and particles are detected with photographic paper or on a tv monitor.
Movie : https://www.youtube.com/watch?v=zc-iyjpzzGQ&feature=youtu.be
Summary : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4617474/
The Merli–Missiroli–Pozzi Two-Slit Electron-Interference Experiment
"They obtained an interference pattern with an electron microscope that was fitted with a special interferometer, an electron biprism, that consisted basically of a very thin wire oriented perpendicularly to the electron beam and positioned symmetrically between two plates at ground potential, so that when a positive or negative potential was applied to the wire the electron beam was split into two deflected components. "
"Their use of this electron biprism was the first important technical and conceptual feature of their experiment; the second was its ability to observe the continuous arrival of the electrons, one at a time, on a television monitor. "
