Abstract: A polymer composite includes a polymeric matrix and conductive fillers dispersed in the polymeric matrix. The polymeric matrix includes a polymer having a thermal expansion coefficient of at least about 100 ?m/(m K), and the conductive fillers have surface texturing.

Abstract: A stretchable polymer electrolyte includes a stretchable copolymer; a lithium salt; and an organic liquid, wherein the stretchable copolymer includes a non-crosslinked first repeating unit, a non-crosslinked second repeating unit, and a crosslinked third repeating unit, the first repeating unit includes a first hard segment and a first soft segment, the second repeating unit includes a second hard segment and a second soft segment, and the third repeating unit includes a third hard segment and a third soft segment.

Abstract: A battery electrolyte solution is that includes an organic electrolyte solution, a lithium-sulfur (Li2S) compound, soluble lithium polysulfide (Li2Sx) microparticles, and a redox mediator comprising a soluble quinone derivative.

Abstract: Disclosed are a thin film transistor includes a gate electrode, an active layer including a semiconductor material and a first elastomer, a gate insulator between the gate electrode and the active layer, and a source electrode and a drain electrode electrically connected to the active layer, wherein each of the semiconductor material and the first elastomer has a hydrogen bondable moiety, and the semiconductor material and the first elastomer are subjected to a dynamic intermolecular bonding by a hydrogen bond and a thin film transistor array and an electronic device including the same.

Abstract: A self-healing composite includes a matrix including an elastomer and conductive nanostructures embedded in the matrix, wherein the elastomer includes a polymer main chain, a —HN—C(?O)—NH— containing first structural unit capable of forming a strong hydrogen bond, and a —HN—C(?O)—NH— containing second structural unit capable of forming a weak hydrogen bond.

Abstract: A polymer comprising at least one unit of the formula (1) wherein T1 is a carbon atom or a nitrogen atom, T2 is a carbon atom if T1 is a nitrogen atom, or is a nitrogen atom if T1 is a carbon atom, r is 1, 2, 3 or 4, s is 1, 2, 3, or 4, M1 is preferably selected from the group consisting of M2 is preferably The polymers are prepared by reacting monomers (1a) with monomers (2a) H2N-[-M1-]r-NH2 (1a) OHC-[-M2-]s-CHO (2a) or the step of reacting monomers (1b) with monomers (2b) OHC-[-M1-]r-CHO (1b) H2N-[-M2-]s-NH2 (2b).

Abstract: One or more embodiments relate to an electrically conductive polymer with a crosslinkable additive. The electrically conductive polymer is a directly photopatternable Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) PEDOT:PSS film with cross-linked network made of a plurality of monomers. The directly photopatternable PEDOT:PSS film PEDOT as such has a better conductivity and stretchability compared to its other counterparts. The directly photopatternable PEDOT:PSS film can further be supplemented with poly(ethylene glycol) diacrylate (PEGDA) which can help with the removal of PSS. Advantageously, the PEGDA supplemented PEDOT:PSS film can exhibit a larger charge storage capacity.

Abstract: Various embodiments are directed to a method of forming an apparatus including placing a first electronic circuit in contact with a second electronic circuit, wherein each of the first and second electronic circuits have connector circuits configured and arranged to provide an electrical connection between the first and second electronic circuits and are formed with a polymer film that is configured to adhere, via self-healing, to another polymer film. The method further includes, in response to the contact, causing or facilitating the self-healing of the respective polymer films of the first and second electronic circuits, thereby creating the electrical connection therebetween.

Abstract: A manufacturing method includes: inducing gelation of an electrically conductive polymer to form a gel; infiltrating the gel with a solution including monomers; and polymerizing the monomers to form a secondary polymer network intermixed with the electrically conductive polymer.

Abstract: Various embodiments include an apparatus and methods of use of a proximity sensor. An example apparatus includes a transducer circuit having a sensor circuit, the sensor circuit including an electrode, an electrical-signal sensing circuit, a substrate to support and at least partially enclose the transducer circuit and the electrical-signal sensing circuit, and a communication circuit. The transducer circuit converts changes in capacitance into electrical signals, the changes in capacitance being carried by the electrode and being responsive to pressure and/or electric field modulations attributable to hemodynamic or pulse-wave events. The electrical-signal sensing circuit senses the events in response to the electrical signals from the transducer circuit. The substrate can conform to a portion of a user and locate the sensor circuit sufficiently close to the user's skin for electrically sensing the hemodynamic or pulse-wave events.

Abstract: One example is directed to a reader device having a first resonance circuit and being configured to interrogate one or more other remotely-located resonance circuits, each associated with a second resonance circuit which may be part of a passive sensor circuit. The first resonance circuit is operated to cause the inductively-coupled oscillating signal to be swept over a range of frequencies and therein cause a jump or sudden transition in a frequency of the oscillating signal while the first and second resonance circuits are in sufficient proximity for inductively-coupling via an oscillating signal via their respective resonance circuits. Sensing circuitry may be used to detect the jump or sudden transition in the frequency of the oscillating signal and, by way of or in response to an indication of timing and/or a set of inductively-related parameters, data is conveyed from the sensor to the reader device via the inductively-coupled oscillating signal.

Abstract: A photo-curable composition includes a fluorinated monomer including cross-linkable functional groups, and a photoinitiator. Manufacturing methods using the photo-curable composition are provided.

Abstract: Disclosed are an organic semiconductor thin film, a manufacturing method thereof, and a thin film transistor and an electronic device including the organic semiconductor thin film. The organic semiconductor thin film includes a matrix. The matrix includes an elastomer and nanoconfined polymer structures embedded in the matrix. The nanoconfined polymer structures form a polymer network. The nanoconfined polymer structures include a conjugation semiconductor polymer. The conjugation semiconductor polymer includes a repeating unit having at least one conjugation system in its main chain. The nanoconfined polymer structures are present in an upper surface layer and a lower surface layer of the organic semiconductor thin film respectively.

Abstract: Various aspects as described herein are directed to skin-conformal sensor devices and methods of using the same. As consistent with one or more embodiments, a sensor device includes an upper portion and lower portion. The upper portion includes a plurality of layers including at least one sensor. The lower portion includes a layer of microstructures configured and arranged to interface with skin of a subject and to interlock the skin with the at least one sensor.

Abstract: A polymer includes a first repeating unit and a second repeating unit forming a main chain, the first repeating unit including at least one first conjugated system, and the second repeating unit including at least one second conjugated system and a multiple hydrogen bonding moiety represented by Chemical Formula 1.

Abstract: Aspects of various embodiments are directed to sensor apparatuses and methods thereof. An example sensor apparatus includes a capacitor and sensor circuitry. The capacitor includes a first substrate having a first electrode, a second substrate having a second electrode, and a dielectric layer. The dielectric layer has a plurality of dielectric structures arranged in a pattern, the first and second electrode being separated by the dielectric layer and arranged with an overlapping area with respect to one another. The sensor circuitry is coupled to the capacitor and configured and arranged to detect normal and shear forces applied to the sensor apparatus based on changes in capacitance derived from changes in at least one of a distance between first and second electrodes and the overlapping area of the first and second electrodes.

Abstract: A stretchable organic semiconductor thin film including a network of conjugated semiconductor polymers including at least one conjugated structural unit and a plasticizer compound dispersed in the polymer network and having a linear or branched aliphatic hydrocarbon group, wherein the conjugated structural unit includes at least one long-chain linear or branched aliphatic hydrocarbon group at the side chain.

Abstract: An example embodiment provides a sensor system including a tag unit and a readout unit. The tag unit includes a first sensor having a stretchable antenna and a stretchable resistor. The tag unit may be configured to create a sensing signal corresponding to a degree of stretching of the stretchable resistor, transmit the sensing signal to the readout unit through the stretchable antenna, and operate in a first region corresponding to a first frequency. The readout unit may be inductively coupled to the tag unit and may be configured to receive and read out the sensing signal, and operate in a second region corresponding to a second frequency. The first frequency may range 30 MHz to 50 MHz, and the second frequency may be different from the first frequency.

Abstract: A battery includes an anode, a cathode, and an electrolyte disposed between the anode and the cathode. The anode includes a current collector and an interfacial layer disposed over the current collector, and the interfacial layer includes a polymer including dynamic bonds.

Abstract: Sensors, sensing arrangements and devices, and related methods are provided. In accordance with an example embodiment, an impedance-based sensor includes a flexible dielectric material and generates an output based on pressure applied to the dielectric material and a resulting compression thereof. In certain embodiments, the dielectric material includes a plurality of regions separated by gaps and configured to elastically deform and recover in response to applied pressure.