“…A pioneering aerosol injector for XFEL single-particle imaging, the 'Uppsala injector' (Seibert et al, 2011;Hantke et al, 2014) (Fig. 1a), has demonstrated success in numerous experiments (Seibert et al, 2011;Rath et al, 2014;Hantke et al, 2014;van der Schot et al, 2015;Ekeberg et al, 2015;Reddy et al, 2017) for particles between 70 and 2000 nm in diameter. The injector is available for users at the Linac Coherent Light Source (LCLS), the European XFEL, the Free Electron laser Radiation for Multidisciplinary Investigations (FERMI) and the Extreme Light Infrastructure (ELI) Beamlines facility.…”