In a method for making a flexible material, a sheet of graphene oxide-composite paper is subjected to an environment having a relative humidity above a predetermined threshold for a predetermined amount of time. At least one expansion cut is cut in the sheet of graphene oxide-composite paper. A flexible conductive material includes a sheet of graphene oxide-composite paper defining at least one cut passing therethrough and formed it a kirigami structure. A region of the sheet of graphene oxide-composite paper includes reduced graphene oxide.

Coating inkjet-printed traces of silver nanoparticles (AgNP) ink with a thin layer of eutectic gallium indium (EGaIn) increases the electrical conductivity and significantly improves tolerance to tensile strain. This enhancement is achieved through a room temperature “sintering” process in which the liquid-phase EGaIn alloy binds the AgNP particles to form a continuous conductive trace. These mechanically robust thin-film circuits are well suited for transfer to highly curved and non-developable 3D surfaces as well as skin and other soft deformable substrates.

Coating inkjet-printed traces of silver nanoparticles (AgNP) ink with a thin layer of eutectic gallium indium (EGaIn) increases the electrical conductivity and significantly improves tolerance to tensile strain. This enhancement is achieved through a room temperature “sintering” process in which the liquid-phase EGaIn alloy binds the AgNP particles to form a continuous conductive trace. These mechanically robust thin-film circuits are well suited for transfer to highly curved and non-developable 3D surfaces as well as skin and other soft deformable substrates.

A load adaptive device includes a substrate, a first electrode, a second electrode, and a passive element. The substrate is configured with a first conductor and a second conductor, and the surface area of the first conductor and/or the surface area of the second conductor are at least 15 mm.sup.2. The distance between the center of the first conductor and the center of the second conductor is at least 9 mm. The first electrode, the second electrode and the passive element are disposed on the substrate. The first electrode is electrically connected to the first conductor. Two terminals of the passive element are electrically connected to the second conductor and the second electrode, respectively. In addition, a hand-made circuit module includes the load adaptive device and a hand-made loop. A part of the hand-made loop is consisted of a hand-bonded conductive tape.

The invention relates to a method to embed a label essentially consisting of a paper substrate carrying electronic inks and/or a printed electronic circuit and/or device (thereby achieving a paper-based electronic circuit) directly into a moulded plastic piece (also designated as plastic object), the embedding of the paper-based electronic circuit and the production of the plastic piece being performed in a single operation. The invention thus also relates to a method to manufacture plastic objects embedding such label. The invention also concerns a plastic object encompassing a label essentially consisting of a paper substrate carrying electronic inks and/or a printed electronic circuit and/or device (thereby achieving a paper-based electronic circuit) embedded in the moulded plastic and in particular an object obtained by the method disclosed to prepare a moulded plastic piece.

A load adaptive device includes a substrate, a first electrode, a second electrode, and a passive element. The substrate is configured with a first conductor and a second conductor, and the surface area of the first conductor and/or the surface area of the second conductor are at least 15 mm.sup.2. The distance between the center of the first conductor and the center of the second conductor is at least 9 mm. The first electrode, the second electrode and the passive element are disposed on the substrate. The first electrode is electrically connected to the first conductor. Two terminals of the passive element are electrically connected to the second conductor and the second electrode, respectively. In addition, a hand-made circuit module includes the load adaptive device and a hand-made loop. A part of the hand-made loop is consisted of a hand-bonded conductive tape.

The present disclosure generally relates to an electronic strain sensor, a system incorporating the sensor, and a method of manufacturing the sensor. The present disclosure also relates to methods of measuring one or more physiological parameters of a living subject, or methods of diagnosing a sleep-related disorder of a living subject, the methods comprising sensing a signal produced by the living subject with the electronic strain sensor or system. The strain sensor comprises: an electrode layer printed on a substrate, a sensing layer printed on a portion of the electrode layer, and an encapsulation layer encapsulating the electrode and sensing layers. The electrode layer exhibits a sheet resistance less than that of the sensing layer, and the sensing layer is in direct contact with the electrode layer. The sensor's electrical resistance can be increased through forming microscopic cracks in the sensing layer in response to forces applied to the sensor.

In an example implementation, a conductive trace printing system includes a conductive trace application station to apply a conductive trace onto a media substrate. The printing system also includes a conductive trace enhancement station to expose the conductive trace to an electroless metal plating solution to generate an enhanced conductive trace.

An electronic circuit (4) comprises at least one electrically conductive portion arranged to a substrate (2) and at least one electrical coupling point (5) determined at the at least one electrically conductive portion. The electronic circuit (4) comprises at the at least one electrical coupling point (5) at least one magnetic and electrically conductive coupling element (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k, 6l) for providing an electrically conductive coupling point (5) with magnetic fastening force.

A method and apparatus for thermally processing material on a low-temperature substrate using pulsed light from a flash lamp is disclosed. Material is conveyed past the flash lamp. The pulses of light are formed by Pulse Width Modulation to tailor the shape of the pulses to generate a thermal gradient in the substrate that enables the material to be heated beyond the maximum working temperature of the substrate without damage. Its shaped pulse rate is synchronized to the conveyance speed of a conveyance system. By using the information from a feedback sensor, the thermal gradient is recalculated to alter the shape of the pulses in real time for optimizing subsequent curings in real time without powering down the curing apparatus. The combined pulse shaping and synchronization allow a temperature profile to be tailored in the sample that is uniformly cured in the conveyance direction.