Abstract: Processes and apparatus are described for atmospheric pressure plasma jet deposition onto a substrate. The process comprises feeding a solution comprising a dissolved metal precursor into a plasma jet. The dissolved metal precursor comprises a precursor metal selected from Groups 2 to 16, with the proviso that the precursor metal does not comprise Mn. The plasma jet is directed towards a surface of the substrate such that material from the plasma jet becomes deposited onto the surface of the substrate. The process provides a means to manufacture conductive, semiconducting or insulating deposits on a substrate in a material-efficient manner without the need for high-temperature post-treatment steps.