Fig. 3: Examples of liquid delivery methods.
From: Sample delivery methods for protein X-ray crystallography with a special focus on sample consumption

Schematics adapted from Echelmeier et al.4 of a a 3D-printed gas dynamic virtual nozzle. b a double-flow-focusing gas dynamic virtual nozzle, c an electrospinning jet, and d a high viscosity extrusion. e, f Images of nozzles showing sample injection for each case in (a–g) adapted and reprinted from Knoska et al.138 and Sierra et al.153, respectively. Image (h) provided by H. Hu (Arizona State University, personal communication).