Embodiments of the disclosed subject matter provide a device including a nozzle, a source of material to be deposited on a substrate in fluid communication with the nozzle, a delivery gas source in fluid communication with the source of material to be deposited with the nozzle, an exhaust channel disposed adjacent to the nozzle, and a confinement gas source in fluid communication with the nozzle and the exhaust channel, and disposed adjacent to the exhaust channel.