An integrated circuit includes an array of memory cells, storage circuits and a write circuit coupled to the array, and a control circuit coupled to the array and write circuit. The composition comprises an aluminum-based powder and at least one organic resin, e. Base bands and revealing line gratings may be rectilinear or curvilinear. A bulge bulges out from a lateral edge of the base portion and narrows an area of an opening between the base portion and the right side plate.