Electrohydrodynamic jet printing (EHJP) technology was demonstrated by fabricating metallic patterns, using a commercialized
silver metallo-organic ink. The electrospray was operated in a full voltage-controlled form but without the auxiliary assistance
of gas pressure. The freeform deposition of basic structures of patterns was demonstrated, for the first time, by using the
unforced electrospray. After heat treatment at 250 °C, an energy-dispersive X-ray spectrum confirmed that the main composition
was silver in the patterns. Scanning electron microscope analysis revealed that dense packed silver crystallites were present
in the fabricated patterns. An electrical resistivity of 4.34 × 10
−8 Ωm, close to the theoretical resistivity of bulk silver, was obtained in the 100 μm-width printed tracks.