Abstract: A copolymer, a film composition and a composite material employing the same are provided. The copolymer is a copolymerization product of a composition, wherein the composition includes a monomer (a), a monomer (b) and a monomer (c). The monomer (a) is a compound having a structure represented by Formula (I), the monomer (b) is a compound having a structure represented by Formula (II), and the monomer (c) is a compound having a structure represented by Formula (III) wherein R1, R2, R3, R4, R5 and R6 are as defined in specification.

Abstract: According to an exemplary embodiment, a method of forming a vertical device is provided. The method includes: providing a protrusion over a substrate; forming an etch stop layer over the protrusion; laterally etching a sidewall of the etch stop layer; forming an insulating layer over the etch stop layer; forming a film layer over the insulating layer and the etch stop layer; performing chemical mechanical polishing on the film layer and exposing the etch stop layer; etching a portion of the etch stop layer to expose a top surface of the protrusion; forming an oxide layer over the protrusion and the film layer; and performing chemical mechanical polishing on the oxide layer and exposing the film layer.

Abstract: A neuroblastoma host cell line for stably expressing human exogenous protein is provided. The cell line is generated by independently integrating control plasmid and switch plasmid into genome of human neuroblastoma SH-SY5Y cells. Upon inserting diseased gene into the above cell line, the cell line thus stably expresses the interested protein by induction, which can be used to study human neurological diseases related to the gene mutation.