The development of stretchable, mechanically and electrically robust interconnects by printing an elastic, silver-based composite ink onto stretchable fabric. Such interconnects can have conductivity of 3000-4000 S/cm and are durable under cyclic stretching. In serpentine shape, the fabric-based conductor is enhanced in electrical durability. Resistance increases only ˜5 times when cyclically stretched over a thousand times from zero to 30% strain at a rate of 4% strain per second due to the ink permeating the textile structure. The textile fibers are wetted with composite ink to form a conductive, stretchable cladding of the silver particles. The e-textile can realize a fully printed, double-sided electronic system of sensor-textile-interconnect integration. The double-sided e-textile can be used for a surface electromyography (sEMG) system to monitor muscles activities, an electroencephalography (EEG) system to record brain waves, and the like.

The development of stretchable, mechanically and electrically robust interconnects by printing an elastic, silver-based composite ink onto stretchable fabric. Such interconnects can have conductivity of 3000-4000 S/cm and are durable under cyclic stretching. In serpentine shape, the fabric-based conductor is enhanced in electrical durability. Resistance increases only ˜5 times when cyclically stretched over a thousand times from zero to 30% strain at a rate of 4% strain per second due to the ink permeating the textile structure. The textile fibers are ‘wetted’ with composite ink to form a conductive, stretchable cladding of the silver particles. The e-textile can realize a fully printed, double-sided electronic system of sensor-textile-interconnect integration. The double-sided e-textile can be used for a surface electromyography (sEMG) system to monitor muscles activities, an electroencephalography (EEG) system to record brain waves, and the like.

Systems and methods for a shape-memory in-ear biosensor for polysomnography and monitoring physiological signals are provided. Various embodiments include an earpiece made from a shape memory or temperature-dependent phase transition material embedded into polydimethylsiloxane elastomer body. The earpiece can use electrodes to detect physiological signals by making direct contact with a user's skin and without the use of electrically conductive gel. When heated above the glass transition temperature of the shape memory polymer, various embodiments of the biosensor may be folded. When cooled, the biosensor will maintain the folded shape. The folded biosensor may then be inserted into the ear canal of a user where, in response to heating by the user's body, it partially unfolds to conform to the shape of the ear canal.

A textile-based hydrogel electrode comprises a textile-based backing layer, a conductive structure coupled to the textile-based backing layer, and a hydrogel body in contact with at least a first portion of the conductive structure, wherein the first portion of the conductive structure and the hydrogel body form an ionic interface configured to generate an electrical signal through the conductive structure corresponding to a biopotential change proximate to the textile-based hydrogel electrode.

The present disclosure provides a graphene based dry electrode for electrophysiological readings, in particular for use with EEG, EKG, EMG, and EOG systems and a method for making said electrodes. The electrodes comprising a doped silicon substrate; a silicon carbide film on the substrate; a graphene surface on the silicon carbide film; wherein the graphene surface has undergone a functionalisation and/or intercalation process to increase the amount of oxygen functional groups present, said process being preferably carried out through repeated contact of the graphene surface with an electrolyte solution.

The present invention relates to a method, device, and system for improved mapping and/or ablation of a tissue. The device may generally include an elongate body and a distal assembly affixed to the elongate body that includes a treatment electrode having a conductive mapping region and a selectively conductive ablation region that is conductive of high-frequency current and substantially non-conductive of low-frequency current. Alternatively, the device may generally include a treatment electrode having a conductive mapping or ablation region and a region that is coated with an electrically insulated but thermally conductive layer.

An estimation method includes first acquiring information of an eyeball motion of a user on the basis of a measurement value of an eye potential of the user, second acquiring positional information of an interaction target on a screen that corresponds to an interaction performed on a device through an operation of the user, third acquiring information regarding a relative motion of sight of the user on the basis at least of the information of the eyeball motion of the user, and estimating a sight position of the user on the screen on the basis of the information regarding the relative motion of the sight of the user and the positional information of the interaction target on the screen, by processing circuitry.

Means, apparatus, and methods of sensor/sensory, meta-sensory, and meta-sensing user-interfaces are provided. In one embodiment, smart headwear senses at least one health or mental health parameter of a wearer of the smart headwear. In one embodiment a smart eyeglass senses brain activity. In another embodiment a wearable device senses blood flow, and indirectly through artificial intelligence, other health parameters such as fever, brain health, mental health, and the like. In another embodiment, a wearable AI (Artificial Intelligence) device has associated with it a meta-lock-in amplifier, i.e. a second lock-in amplifier responsive to an output of a first lock-in amplifier, where the first lock-in amplifier is referenced to at least one alternating current electrical signal driving a light source, and the second lock-in amplifier is referenced to an output of the first lock-in amplifier. In another embodiment, a collective of users engage in a gamelike activity that promotes improved physical and mental health. When paired with a camera a wearer can automatically capture rushing and dragging moments during their day as blood rushes or drags or maintains tempo in their brain. When paired with a fuzzy display a wearer can gain insight in real-time to their cognitive state.

The system proposes an electrooculogram based human computer interaction/human machine interface (HCI/HMI) system comprising wearable graphene textiles, a signal acquisition system for obtaining biopotentials from the human body, and a processor for the processing of said biopotentials acquired through said signal acquisition system for enabling and facilitating human machine interactions in various settings.

A stretchable and flexible sensing device includes a first elastic membrane, a first strain sensor and a processing unit. The first elastic membrane has a first surface, a second surface and a plurality of electrode contacts. The first surface and the second surface are disposed of opposite to each other and the electrode contacts are disposed on the first surface. One of the electrode contacts is as ground terminal. The first strain sensor is disposed on the first surface by printing technology so as to electrically connect to the electrode contacts. The processing unit is electrically connected to the electrode contacts. The processing unit operates according to a stretch resistance value of one of the first strain sensor.