A hand-wearable device includes an elastic sheet including a first elastic layer and a second elastic layer facing each other; a sensor unit formed by printing a predetermined conductive liquid metal between the first elastic layer and the second elastic layer; a wire unit extending from the sensor unit and electrically connected to the sensor unit; an electrode substrate formed on one side of the wire unit and spaced apart from the wire unit by a predetermined distance; and a connection electrode formed by printing a predetermined conductive liquid metal between the wire unit and the electrode substrate.

The present disclosure provides a coiled cord capable of increasing the length of a cable while preventing a winding diameter of the coiled cord in a plane orthogonal to the direction in which the coiled cord is extended and contracted in a natural state from increasing. A first exemplary aspect is a coiled cord around which a cable is wound, the cable being capable of being freely extended and contracted, the coiled cord including: a first layer in which the cable is wound from an inner side of the coiled cord to an outer side thereof in a radial direction, and a second layer in which the cable is wound from the outer side of the coiled cord to the inner side thereof in the radial direction, in which the first and the second layers are continuously connected to each other.

An electrical connecting element includes a stretchable insulation sheet, two or more first conductive threads on one surface of the insulation sheet, and two or more first resin threads on the one surface of the insulation sheet. The first conductive threads extend in a predetermined direction and are disposed in parallel with each other orthogonally to the predetermined direction. The first resin threads have thermal adhesiveness. The first resin threads do not overlap with any of the first conductive threads.

An electrical connecting element includes a stretchable insulation sheet, two or more first conductive threads on one surface of the insulation sheet, and two or more first resin threads on the one surface of the insulation sheet. The first conductive threads extend in a predetermined direction and are disposed in parallel with each other orthogonally to the predetermined direction. The first resin threads have thermal adhesiveness. The first resin threads do not overlap with any of the first conductive threads.

A hand-wearable device includes an elastic sheet including a first elastic layer and a second elastic layer facing each other; a sensor unit formed by printing a predetermined conductive liquid metal between the first elastic layer and the second elastic layer; a wire unit extending from the sensor unit and electrically connected to the sensor unit; an electrode substrate formed on one side of the wire unit and spaced apart from the wire unit by a predetermined distance; and a connection electrode formed by printing a predetermined conductive liquid metal between the wire unit and the electrode substrate.

Provided are a wire for use in an extendable electronic device, an extendable electronic device and preparation methods thereof. The wire is provided with a hollow region allowing extension and deformation of the wire.

Provided are a wire for use in an extendable electronic device, an extendable electronic device and preparation methods thereof. The wire is provided with a hollow region allowing extension and deformation of the wire.

A stretchable conductor includes a substrate with a first major surface and an elongate wire, wherein the substrate is an elastomeric material, the elongate wire is on the first major surface of the substrate, the wire includes a first end and a second end, and further includes at least one arcuate region between the first end and the second end. At least one portion of the arcuate region of the wire in the region has a first surface area portion embedded in the surface of the substrate and a second surface area portion unembedded on the substrate and exposed in an amount sufficient to render at least an area of the substrate in the region electrically conductive. The unembedded second surface portion of the arcuate region may lie above or below a plane of the substrate. Additionally, different methods of preparing said stretchable conductor are disclosed. Composite articles including said stretchable conductor in durable electrical contact with a conductive fabric are also disclosed.

A stretchable conductor includes a substrate with a first major surface and an elongate wire, wherein the substrate is an elastomeric material, the elongate wire is on the first major surface of the substrate, the wire includes a first end and a second end, and further includes at least one arcuate region between the first end and the second end. At least one portion of the arcuate region of the wire in the region has a first surface area portion embedded in the surface of the substrate and a second surface area portion unembedded on the substrate and exposed in an amount sufficient to render at least an area of the substrate in the region electrically conductive. The unembedded second surface portion of the arcuate region may lie above or below a plane of the substrate. Additionally, different methods of preparing said stretchable conductor are disclosed. Composite articles including said stretchable conductor in durable electrical contact with a conductive fabric are also disclosed.

An MOCVD system fabricates high quality superconductor tapes with variable thicknesses. The MOCVD system can include a gas flow chamber between two parallel channels in a housing. A substrate tape is heated and then passed through the MOCVD housing such that the gas flow is perpendicular to the tape's surface. Precursors are injected into the gas flow for deposition on the substrate tape. In this way, superconductor tapes can be fabricated with variable thicknesses, uniform precursor deposition, and high critical current densities.