Abstract: A biosignal sensing electrode, including: a substrate; a conductive film on the substrate, the conductive film containing particles of a layered material containing one or plural layers, the one or plural layers being oriented parallel to a surface of the substrate and containing a layer body represented by: MmXn, with a modifier or terminal T existing on a surface of the layer body; and a protective material containing a polymer having C?O and at least one of OH and NH as a functional group covering at least an edge of the conductive film, the functional group being bonded to the particles of the layered material, and at least a part of the second face of the conductive film is exposed from the protective material.

Abstract: An electrode comprising: a ? electron conjugated compound film which includes a ? electron conjugated compound having at least one of an aromatic ring, a heteroaromatic ring, a carbon-carbon double bond, a carbon-carbon triple bond, and a carbon-phosphorus double bond; and a conductive film bonded to the r electron conjugated compound film, the conductive film including particles of a layered material of one or plural layers having a layer body represented by: MmXn, wherein M is at least one metal of Group 3 through 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is 1 to 4, and m is more than n but not more than 5, and a modifier or terminal T existing on a surface of the layer body, wherein T is at least one of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom.

Abstract: A biosignal electrode that includes a substrate having first and second opposed main surfaces; a conductive material pattern on the first main surface of the substrate, the conductive material pattern defining a plurality of open spaces extending through the conductive material pattern and exposing the first surface of the substrate therethrough; and a biocompatible glue material within the plurality of open spaces of the conductive material pattern.