A dry electrode for biometric measurement on a skin and a method for manufacturing are disclosed. The dry electrode has a substrate forming the scaffold of the dry electrode. The substrate has metal or semiconductor material; an electrically conductive film on a first surface of the substrate; and an attaching element for attaching the dry electrode. The electrically conductive film is directly deposited on the first surface of the substrate. The electrically conductive film is a graphene film.

A dry electrode for biometric measurement on a skin and a method for manufacturing are disclosed. The dry electrode has a substrate forming the scaffold of the dry electrode. The substrate has metal or semiconductor material; an electrically conductive film on a first surface of the substrate; and an attaching element for attaching the dry electrode. The electrically conductive film is directly deposited on the first surface of the substrate. The electrically conductive film is a graphene film.

Poroelastic materials, methods of making such materials, biosensors comprising such materials, and methods of making and using such biosensors. According to one aspect, a poroelastic material is formed by a process that includes depositing a prepolymer composition on a substrate, annealing the prepolymer composition in a pressurized steam environment at a temperature and for a duration sufficient to form a porous medium having a solid matrix formed of a polymer derived from the prepolymer composition, infiltrating the porous medium with a liquid that includes electrically conductive nanomaterials such that the electrically conductive nanomaterials are located within pores of the porous medium, and evaporating the liquid such that the electrically conductive nanomaterials remain in and/or connected through the pores of the porous medium.

A wearable device for monitoring medical properties of a patient, the device having a rigid frame, multiple members coupled to the rigid frame, and a housing having an electrical circuit, where the housing is secured to the rigid frame, where the rigid frame surrounds a void, and where the void is configured to accommodate a bottom surface of the housing.

A wearable device for monitoring medical properties of a patient, the device having a rigid frame, multiple members coupled to the rigid frame, and a housing having an electrical circuit, where the housing is secured to the rigid frame, where the rigid frame surrounds a void, and where the void is configured to accommodate a bottom surface of the housing.

Disclosed is a frequency-selective signal damper including: a viscous polymer exhibiting non-Newtonian fluid behavior; and hydrogel exhibiting sol-gel phase transition. The viscous polymer exhibits shear thinning in a damping region or a noise region, and the hydrogel has a sol phase in the damping region or the noise region. The viscous polymer is gelatin, and the hydrogel is chitosan.

A bio electrode and a method of forming the same are provided. The bio electrode comprises a first core-shell nanowire/polymer composite comprising a first core-shell nanowire and a first polymer. The method of forming a bio electrode comprises a step of forming a core-shell nanowire by carrying out epitaxial growth of a biocompatible metal on a surface of a core comprising a conductive metal.

A bio electrode and a method of forming the same are provided. The bio electrode comprises a first core-shell nanowire/polymer composite comprising a first core-shell nanowire and a first polymer. The method of forming a bio electrode comprises a step of forming a core-shell nanowire by carrying out epitaxial growth of a biocompatible metal on a surface of a core comprising a conductive metal.

An electrode includes a living body contact portion that is to be in contact with a living body and that contains a rubber material and at least one carbon material selected from carbon nanotubes and graphene. The ratio of the volume resistivity of the living body contact portion to the surface resistivity of the living body contact portion is 1.2 or more. The amount of the carbon material in the living body contact portion is 3 parts by mass or more and 20 parts by mass or less relative to 100 parts by mass of the rubber material, or the living body contact portion has a 25% compression hardness of 20 kPa or more and 110 kPa or less.

Transfer tape articles are suitable for preparing dry electrodes. The transfer tape articles include a release liner and a conductive transfer tape layer adjacent to the release liner. The conductive transfer tape layer includes a layer of adhesive and a discontinuous layer of electrically conductive shaped particles, where the shaped particles have at least one point. The adhesive envelopes the conductive particles, and at least one point of the electrically conductive particles protrudes from the conductive transfer tape layer. The conductive transfer tape layer can be a single layer of adhesive or a multi-layer construction including a first adhesive layer, a support layer, and a second adhesive layer.