which bonds to SiO2 and silicon nitride (SiN) surface, as an anchoring molecule to immobilize bioreceptors on the SiN rings in an oriented manner (Fig. 2(a) and (b)). Another unique point is to use the protein G which bonds to many kinds of mammalian antibodies only by mixing the antibody solution (Fig. 2(c)). Previously protein A was used for binding antibody. But, the protein A has weak binding energy with antibodies, and the antibodies dissociate from protein A. Instead of protein A, the protein G, which has higher binding