A coating and developing apparatus develops a substrate of which surface is coated with resist and exposed to lights. The relative preparation process can be carried out starting from the nucleus containing the supported catalyst or carrier, depositing, on the surface of said nucleus, a molybdenite either preformed or generated in situ following the addition of an oil-soluble precursor of molybdenum so as to partially or totally cover it with a layer of molybdenite. The solution-saturated filler has vertical slits that allow the user to remove polish from a fingernail, while the jar lid with integrated wand and attached dauber provides for removing polish from toenails and other harder to reach spots. A thermal electron emission device using the thermal electron emitter is also related. An organic electroluminescence device of multi-photon emission mode exhibiting little unevenness in luminance even in a large-area format electroluminescence device is provided. The connection between the handle lever and the compressing lever permits them to be separated and joined together in a fashion that facilitates engaging and compressing the retaining ring for insertion into the cylinder.