Abstract: The invention relates to a graphene tape. In particular, it relates to the manufacture, the application and possible uses of such a graphene tape. A graphene tape comprising (a) a support layer; and (b) a first nano-composite layer, the nanocomposite layer comprising a thin film layer and a graphene layer, wherein the thin film layer is disposed between the support layer and the graphene layer. A method of manufacture comprising (a) providing a substrate; (b) forming a graphene layer on the substrate; (c) depositing a thin film layer on the graphene layer; (d) applying a supporting layer on the thin film layer; (e) removing the substrate; and (f) applying a protective layer in place of the substrate.

Abstract: Graphene and ferroelectric materials are used as tunable sensors for detecting and measuring radiation, such as infrared radiation. The low absorption and reflectance of graphene and interconnected graphene networks, for example in the infrared, are exploited for use in such tunable sensors. The active layer makes use of a unique property of ferroelectric materials, known as the pyroelectric effect, for measuring the intensity of impinging radiation. Using graphene electrodes may offer a significant increase in sensitivity, tunability and mechanical flexibility of sensors, such as infrared sensors. In one method, intensity of radiation is measured using variations in the doping level of the graphene electrode.

Abstract: In accordance with a version of the invention, graphene with a ferroelectric material is used as the transparent electrode material in an electrochromic device. The use of curved and dynamically flexing substrates enables flexible and stretchable applications for electrochromic films. Furthermore, the nonreactive and impermeable nature of graphene increases the durability of the device through increased resistance to external impurities. In addition, the incorporation of ferroelectric materials allows the device to exhibit nonvolatile usage; that is, devices can remain transparent with no external power source. Furthermore, devices may exhibit a charging effect, permitting recovery of energy stored in alignment of ferroelectric dipoles within the ferroelectric material.

Abstract: A method of in-situ transfer during fabrication of a component comprising a 2-dimensional crystalline thin film on a substrate is disclosed. In one embodiment, the method includes forming a layered structure comprising a polymer, a 2-dimensional crystalline thin film, a metal catalyst, and a substrate. The metal catalyst, being a growth medium for the two-dimensional crystalline thin film, is etched and removed by infiltrating liquid to enable the in-situ transfer of the two-dimensional crystalline thin film directly onto the underlying substrate.

Abstract: Hot pressing hollow carbon nanoparticles results in a nano-carbon foam that can be used for energy storage, carbon dioxide capture or water desalination.

Abstract: A method of transferring graphene to a polymeric substrate is disclosed herein. In a described embodiment, the method 400 comprises heating the polymeric substrate at 408 to at least partially melt the polymeric substrate; compressing the at least partially melted polymeric substrate against the graphene at 410 to form an intermediate graphene composite; and cooling the intermediate graphene composite at 412 to transfer the graphene to the polymeric substrate. Apparatuses for performing the transfer are also disclosed.

Abstract: Methods of growing a multilayer graphene film (10) include flowing a weak oxidizing vapor (OV) and a gaseous carbon source (CS) over a surface (SGC) of a carbonizing catalyst (GC) in a CVD reaction chamber (2). Carbon atoms (C) deposit on the carbonizing catalyst surface to form sheets of single-layer graphene (12) upon cooling. The method generates a substantially uniform stacking of graphene layers to form the multilayer graphene film. The multilayer graphene film is substantially uniform and has a relatively large scale as compared to graphene films formed by prior-art methods.