A centrifugal fan includes a housing and an impeller. In the photodetecting section 10A, M\xd7N pixel units P1,1 to PM,N are arrayed in M rows and N columns. The prisms are brought into the beam path of the resonator, formed from mirrors and optically nonlinear material. The implant delivery system is tracked over the guidewire to a selected position defined by the guidewire attachment. As a result, a method of fabricating a ferroelectric memory capable of protecting a ferroelectric capacitor from water constituents evolved during a fabrication process, and maintaining satisfactory memory characteristics can be provided.