Abstract: A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

Abstract: A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

Abstract: A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

Abstract: A method of producing a substrate provided with a shaped graphene material electrically conductive region is described, the method comprising applying a photoresist material to a substrate, shaping the photoresist material to cover at least part of the substrate that is not to be electrically conductive, depositing a graphene material onto the substrate over the shaped photoresist material, and subsequently removing the photoresist material. Also described are devices such as touch sensors and shaped light emitting devices manufactured using the method.

Abstract: A reinforced concrete material is described comprising a cementitious material (22) in which graphene is substantially uniformly distributed. A method of production of concrete is also described comprising the steps of forming a substantially uniform suspension (20) of graphene with water, and mixing the suspension (20) with a cementitious material (22) to form a concrete material (28).

Abstract: The present invention relates to a method for the manufacture of a device, such as a van der Waals heterostructure device, comprising a layer of an oxide of hafnium, tantalum, zirconium, niobium, tin or rhenium, and to a device comprising the same.

Abstract: Methods of producing a uniformly or substantially uniformly doped relatively large area multi-layered graphene element are described comprising the steps of placing the graphene element and a dopant under low pressure conditions, and holding the graphene element and dopant at an elevated temperature for a period of time while under the low pressure conditions. In one arrangement, openings are formed in a multi-layered graphene element of relatively large area prior to doping. In another arrangement, a relatively large area multi-layered graphene element formed by an epitaxial growth technique is used. The invention also relates to an element produced using the aforementioned techniques.

Abstract: A method for use in the synthesis of graphene is described that comprises the steps of annealing a substrate in a hydrogen gas atmosphere, subsequently undertaking a deposition and nucleation step in which a relatively thick carbon layer is deposited onto the substrate and subsequently thinned to form small graphene islands or nuclei, undertaking a graphene growth step in which the graphene islands or nuclei expand and coalesce, and subsequently allowing the substrate to cool. A sensor 10 incorporating the graphene sheet is also described.

Abstract: The present invention relates to a transparent chemically functionalized graphene with high electrical conductivity and which is stable in air. It also relates to a method of manufacturing a conductive and transparent graphene-based material.

Abstract: Methods of producing a uniformly or substantially uniformly doped relatively large area multi-layered graphene element are described comprising the steps of placing the graphene element and a dopant under low pressure conditions, and holding the graphene element and dopant at an elevated temperature for a period of time whilst under the low pressure conditions. In one arrangement, openings are formed in a multi-layered graphene element of relatively large area prior to doping. In another arrangement, a relatively large area multi-layered graphene element formed by an epitaxial growth technique is used. The invention also relates to an element produced using the aforementioned techniques.

Abstract: A detector is described comprising a first graphene element (12), the first graphene element (12) comprising a few layer graphene element functionally doped with a dopant material and to which at least one electrode is connected.

Abstract: The present invention relates to a transparent chemically functionalized graphene with high electrical conductivity and which is stable in air. It also relates to a method of manufacturing a conductive and transparent graphene-based material.

Abstract: Polymers of caprolactam, having high impact strength, obtained by means of anionic polymerization, containing a rubbery phase distributed homogeneously inside the polymer consisting of alternating copolyesteramides with elastomeric properties, and a related production process, comprising dissolving or swelling the elastomeric phase in monomer caprolactam, and submitting the mixture to a polymerization at temperatures variable within the range of from 120.degree. C. to 180.degree. C., in the presence of a basic initiator, and of an activator.

Abstract: A process for preparing self-extinguishing formed thermoplastic bodies based on polycaprolactam, which consists in polymerizing, by anionic way, in suitable molds .epsilon.-caprolactam, by previously incorporating into said .epsilon.-caprolactam a flame-retardant and optionally at least a known coadjuvant substance, said flame-retardant being composed of red phosphorus powder micro-encapsulated in a synthetic resin, preferably in a melamine resin.

Abstract: A process by which transformations of linear polyamides are performed at temperatures below the melting and decomposition temperatures of pure polyamides, wherein anionic polymerization of dry lactams with 4 to 12 carbon atoms is performed in the presence of one or more lithium halides, in amounts ranging from 1 to 10% in weight of the polymer.