| abstract |
(57) [Problem] To provide a DNA chip capable of shortening a hybridization time of a specimen such as blood. A substrate and a first substrate formed on the substrate surface are provided. An optical waveguide layer, gratings respectively formed on both end surfaces of the first optical waveguide layer, and formed on the first optical waveguide layer located between the gratings, the refractive index being higher than that of the first optical waveguide layer. A second optical waveguide layer made of a transparent material with high efficiency, a poly-L-lysine film formed on the second optical waveguide layer, and one end extending onto the poly-L-lysine film, wherein the second optical waveguide An electrode thin film for generating an electric charge between the electrode and the layer. |