Abstract: The present invention relates to an ironmaking feedstock comprising a solid CaFe3O5 phase. The ironmaking feedstock may be produced by a process comprising reacting a combination of a calcium source and magnetite at elevated temperature under reducing conditions sufficient to produce the solid CaFe3O5 phase. The product may be in the form of agglomerates such as pellets, with a compressive strength such that the product is suitable for transportation.

Abstract: A composition comprising reduced graphene oxide in the form of sheets that are interconnected to define pores between the sheets.

Abstract: The present application discloses a spectroscopy probe for a Raman spectroscopy system, and methods for preparing filters for the probe. A method for forming an SERS substrate which can optionally be used with the probe is also described. The spectroscopy probe is formed using a double-clad optical fibre probe tip, the double-clad optical fibre (DCF) having a single mode core, multimode inner cladding, and outer cladding, and a micro-filter fixed to the distal end of the optical fibre probe tip. The micro-filter has a short pass or band pass filter configured to align with the DCF core to filter silica Raman background generated by laser excitation in the single mode core, and a long pass filter configured to suppress Rayleigh scattering from the sample while allowing Raman scattered wavelengths to be transmitted through the inner cladding.

Abstract: A method, including irradiating graphene oxide (GO) with a beam of light or radiation to form reduced graphene oxide (RGO) in a three-dimensional (3D) pattern, wherein the RGO is porous RGO with pores having sizes tuned by controlling the beam of light or radiation.

Abstract: The present application discloses a spectroscopy probe for a Raman spectroscopy system, and methods for preparing filters for the probe. A method for forming an SERS substrate which can optionally be used with the probe is also described. The spectroscopy probe is formed using a double-clad optical fibre probe tip, the double-clad optical fibre (DCF) having a single mode core, multimode inner cladding, and outer cladding, and a micro-filter fixed to the distal end of the optical fibre probe tip. The micro-filter has a short pass or band pass filter configured to align with the DCF core to filter silica Raman background generated by laser excitation in the single mode core, and a long pass filter configured to suppress Rayleigh scattering from the sample while allowing Raman scattered wavelengths to be transmitted through the inner cladding.

Abstract: Disclosed is a technology being implemented in an apparatus for coating a substrate with swarf particles. The apparatus facilitates depositing metal coating onto metal surfaces, polymers, and ceramics. In this apparatus, the grinding process is retrofitted to deposit coatings onto substrates that range from soft (e.g., polymers and aluminium) to hard (e.g., glass-ceramic) materials. The apparatus comprises a sample holder, an infeed, and a grinding wheel. The sample holder holds a substrate to be coated with swarf particles. The infeed holding a work piece. The grinding wheel is mounted at a predefined height over the infeed. The apparatus is used to perform metal coating by depositing the swarf materials on surface of the substrate. It may be noted that the swarf materials are generated by grinding the work piece with the grinding wheel.

Abstract: A preparation comprised of one or more pellets having an outer shell and core. The outer shell is made of dissolvable material and said core containing poly (ethylene glycol).

Abstract: A system is provided for assessing heard injury criterion (HIC) by analyzing signals received from sensors of a sensor array to calculate an impact force on an impact area, determine the linear acceleration based on the impact force and mass of the wearer's head. HIC values are calculated within a variable duration sliding window across a time period within which an impact occurs based on the integral of linear acceleration for the time period of the window, to determine a maximal HIC which is converted to a biofeedback signal.

Abstract: The invention relates in general to porous graphene-based films. In particular, the invention relates to a process for the preparation of a porous graphene-based films comprising reduced graphene oxide. The invention also relates to porous graphene-based films prepared by the process and to uses of such porous graphene-based films, in particular, in filtration applications. The invention further relates to porous multi-zone graphene-based films comprising different zones of different porosity.

Abstract: A bead immobilization method including receiving at least one bead in at least one well in a casting surface, and casting a casting material over the casting surface to form a reverse casting in which the at least one bead is cast onto at least one post upstanding from a surface of the reverse casting.

Abstract: A photovoltaic (PV) structure for generating electrical power from light, the structure including an enhancing layer for increasing the absorption of the light into the structure, the enhancing layer including: a wrinkled graphene layer configured to trap the light in the PV structure; and aluminum nanoparticles configured to scatter the light into the PV structure.

Abstract: A bead immobilization method including receiving at least one bead in at least one well in a casting surface, and casting a casting material over the casting surface to form a reverse casting in which the at least one bead is cast onto at least one post upstanding from a surface of the reverse casting.

Abstract: Methods and apparatus for recording and retrieval of optically readable data employ a recording medium (100) which comprises an optically active material (108) able to induce a change in properties of the medium in the presence of optical radiation having a first characteristic, such as a first optical frequency, and wherein the change in properties can be inhibited by optical radiation having a second characteristic, such as a second optical frequency. During recording, a region of the recording medium (100) is irradiated with a first beam (506) of optical radiation having the first characteristic, the beam having a sufficient intensity within a central portion of the irradiated region and being of sufficient duration to cause an optically induced change in properties of the recording medium.

Abstract: The invention relates to materials that exhibit biocidal activity and in particular to surfaces that exhibit novel surface topography that is lethal to cells on contact. The invention also relates to devices comprising such surfaces, to methods of producing the surfaces and to methods of eliminating or reducing cellular survival wherein cells are exposed to the surfaces. In particular the invention relates to a synthetic biocidal surface comprising an array of nanospikes that are lethal to cells on said surface due to piercing of cell membranes by said nanospikes and to a method of producing a synthetic biocidal surface comprising an array of nanospikes that are lethal to cells on said surface due to piercing of cell membranes by said nanospikes, which comprises exposing a silicon comprising substrate surface to reactive-ion etching.

Abstract: A solar cell product including: a bulk semiconductor substrate having one or more solar cells formed therein; and nanoscale particles distributed over a surface of the solar cells to scatter sunlight forward into the solar cells and thereby enhance the efficiency of the solar cells.

Abstract: A thin-film solar cell product, including: a thin film semiconductor having one or more solar cells formed therein, the solar cells having a front surface for receiving incident sunlight, and a rear surface; at least one reflective layer to reflect light that has passed through the thin film semiconductor without having been absorbed therein; and a scattering layer including broadband scattering particles configured to scatter light incident upon the scattering layer to increase the absorption of the light in the solar cells.

Abstract: A method of replica moulding microstructures, the method including forming a negative master of at least one microstructure configured to support microscopic biological material, casting a flowable polymeric material onto the negative master, placing a substrate against the flowable polymeric material and the negative master, allowing the flowable polymeric material to solidify in the negative master and on the substrate, and separating the substrate and the solidified polymeric material from the negative master, thereby leaving a positive replica of the at least one microstructure on the substrate.

Abstract: An imaging system including a multi-mode fiber and a gradient index (GRIN) lens. The invention also relates to a system including a multi-mode fiber, such as a double-clad photonic crystal fiber, for transmitting an excitation signal to a sample for the purpose of imaging, and a scanning mechanism, which preferably includes a microelectromechanical system (MEMS) mirror, for reflecting the excitation signal in varying directions in order to scan the sample.

Abstract: A bead immobilization method including receiving at least one bead in at least one well in a casting surface, and casting a casting material over the casting surface to form a reverse casting in which the at least one bead is cast onto at least one post upstanding from a surface of the reverse casting.

Abstract: The invention relates to a method of generating an ordered deposition geometry on a surface of a compound optical fibre, which comprises: (a) arranging a plurality of optical fibres and/or compound optical fibres in common orientation and close packed configuration to form a bundle; (b) drawing the bundle under suitable conditions to produce a compound optical fibre of desired diameter; (c) processing the compound optical fibre to produce a substantially planar surface; (d) subjecting said surface to an etching agent to produce surface relief (e) subjecting said surface with relief to metal coating. The invention also covers a compound optical fibre having an ordered deposition geometry on a substantially planar surface that is substantially transverse to compound optical fibre longitudinal axis, wherein the compound optical fibre comprises individual optical elements of less than about 1000 nm in diameter.