A nozzle plate, inkjet head a manufacturing method of the same are disclosed. The buried insulator layer has a plurality of charge traps. Time-frequency transforms and coherence are derived from the acceleration. The structure allows an operator to install or remove the packing to or from the accommodating portion inside the splash cover without interference from the splash cover. Features of the controller assemblies and packaging described herein allow for, among other things, modularity, scalability, and improved heat transfer. The applicator includes a body having at least one reservoir configured to contain cosmetics and an ejection head having a plurality of nozzles in fluid communication with the cosmetics.