Abstract: Wearable electronic devices that comprise an article of apparel that comprises at least one electronic or electrical component.

Abstract: Electrical switches or sensors that comprise (a) a first electrical pole, (b) a layer of a variable resistance material in electrical contact with the first electrical pole, and (c) a second electrical pole that is in electrical contact with the variable resistance material and is not in electrical contact with the first pole, wherein the variable resistance material comprises at least one polymer having a glass transition temperature of no higher than about 10° C.

Abstract: Thermal management device systems comprising a thermal management device component and a computing device component, wherein the thermal management device component comprises compositions that comprise graphene sheets.

Abstract: Embodiments of the present invention relate to graphene-based microphone diaphragms. In one embodiment, a acoustic wave sensor comprises a diaphragm comprised of a graphene-based composition, wherein the diaphragm has a first side at least partially covered with a reflective material. An emitter fiber is positioned proximate to the diaphragm, wherein the emitter fiber transmits light towards the first side. A collector fiber is positioned proximate to the diaphragm, wherein the collector fiber captures at least a portion of light reflected by the first side, wherein the collector fiber is in communication with a detector. A converter is in communication with the detector and converts a signal received by the detector to a digital signal for processing. The portion of light that is captured as a result of diaphragm distortion is different than the portion of light captured in the absence of diaphragm distortion. The graphene-based composition includes graphene sheets.

Abstract: Articles comprising a composition comprising a polymeric binder and at least one carbonaceous filler, wherein the article has a compositional gradient such that the concentration of the filler is increased or decreased in at least one direction in the article. Methods for their preparation and structures comprising the articles are also described.

Abstract: Polymeric article reinforced with a reinforcing component. The reinforcing component includes a composition made from at least one polymer and graphene sheets.

Abstract: Compositions comprising graphene sheets and at least one metal having an anodic index of no greater than about ?1.0 V. Disclosed is are coatings comprising compositions comprising graphene sheets and at least one metal having an anodic index of no greater than about ?1.0 V. Also disclosed is an object or structure coated at least in part with a coating comprising graphene sheets and at least one metal having an anodic index of no greater than about ?0.7 V and methods of coating objects and structures.

Abstract: Polymeric article reinforced with a reinforcing component. The reinforcing component includes a composition made from at least one polymer and graphene sheets.

Abstract: Printed electronic device comprising a substrate onto at least one surface of which has been applied a layer of an electrically conductive ink comprising functionalized graphene sheets and at least one binder. A method of preparing printed electronic devices is further disclosed.

Abstract: Polymeric article reinforced with a reinforcing component. The reinforcing component includes a composition made from at least one polymer and graphene sheets.

Abstract: Flexible batteries, comprising at least two cells, wherein at least two cells are connected by flexible connectors, such that the battery can be bent. The batteries can be incorporated into clothing and gear.

Abstract: Printed electronic device comprising a substrate onto at least one surface of which has been applied a layer of an electrically conductive ink comprising functionalized graphene sheets and at least one binder. A method of preparing printed electronic devices is further disclosed.

Abstract: Coatings comprising functionalized graphene sheets and at least one binder. In one embodiment, the coatings are electrically conductive.

Abstract: Polymeric article reinforced with a reinforcing component. The reinforcing component includes a composition made from at least one polymer and graphene sheets.

Abstract: Coatings are provided containing functionalized graphene sheets and at least one binder. In one embodiment, the coatings are electrically conductive.

Abstract: Printed electronic device comprising a substrate onto at least one surface of which has been applied a layer of an electrically conductive ink comprising functionalized graphene sheets and at least one binder. A method of preparing printed electronic devices is further disclosed.

Abstract: Multilayered security devices comprising a patterned substrate over which a graphene-based coating has been applied.

Abstract: Printed electronic device comprising a substrate onto at least one surface of which has been applied a layer of an electrically conductive ink comprising functionalized graphene sheets and at least one binder. A method of preparing printed electronic devices is further disclosed.

Abstract: A method of printing articles having variable conductivities, including those having conductivity gradients.

Abstract: Polymeric article reinforced with a reinforcing component. The reinforcing component includes a composition made from at least one polymer and graphene sheets.