A fluidic nozzle configured to spray an oscillating pattern of fluid droplets, comprising: a source of fluid under pressure, a first fluidic oscillator defined in a substrate and having an inlet in fluid communication with said source and including a power nozzle with a power nozzle width P W , said oscillator (100, 200, 400, , 800, 900) further including an oscillation chamber having an upstream end with the inlet coupled to said power nozzle for issuing a jet of fluid into said oscillation chamber and a downstream end having an outlet aperture for issuing a jet of fluid into ambient space; said oscillation chamber having a fluid jet steering section in fluid communication with said power nozzle and the fluid jet steering section having a first fluid pressure accumulating volume opposite a second fluid pressure accumulating volume, each in fluid communication with one another and with said power nozzle , wherein said fluid jet steering section is in fluid communication with and emits a fluid jet into an oscillation inducing interaction region ; said oscillator further including and opposing first and second side walls which intersect opposing top and bottom walls to define said oscillation inducing interaction region in said oscillation chamber for causing said jet of fluid to rhythmically sweep back and forth between said sidewalls in said oscillation chamber; wherein said oscillation inducing interaction region terminates in a throat with a throat width T W ; wherein said oscillation chamber's upstream end leads to a bell-shaped feed that promotes the spreading of the jet as it leaves the power nozzle ; wherein the interaction region and said fluid jet steering section are quickly filled with fluid from said source and the fluidic oscillator is activated to generate a bistable oscillating spray; wherein said oscillation chamber's interaction region includes opposing ear-shaped protuberances projecting inwardly from said opposing first and second side walls. a source of fluid under pressure, a first fluidic oscillator defined in a substrate and having an inlet in fluid communication with said source and including a power nozzle with a power nozzle width P W , said oscillator (100, 200, 400, , 800, 900) further including an oscillation chamber having an upstream end with the inlet coupled to said power nozzle for issuing a jet of fluid into said oscillation chamber and a downstream end having an outlet aperture for issuing a jet of fluid into ambient space; said oscillation chamber having a fluid jet steering section in fluid communication with said power nozzle and the fluid jet steering section having a first fluid pressure accumulating volume opposite a second fluid pressure accumulating volume, each in fluid communication with one another and with said power nozzle , wherein said fluid jet steering section is in fluid communication with and emits a fluid jet into an oscillation inducing interaction region ; said oscillator further including and opposing first and second side walls which intersect opposing top and bottom walls to define said oscillation inducing interaction region in said oscillation chamber for causing said jet of fluid to rhythmically sweep back and forth between said sidewalls in said oscillation chamber; wherein said oscillation inducing interaction region terminates in a throat with a throat width T W ; wherein said oscillation chamber's upstream end leads to a bell-shaped feed that promotes the spreading of the jet as it leaves the power nozzle ; wherein the interaction region and said fluid jet steering section are quickly filled with fluid from said source and the fluidic oscillator is activated to generate a bistable oscillating spray; wherein said oscillation chamber's interaction region includes opposing ear-shaped protuberances projecting inwardly from said opposing first and second side walls. <EOS>