Abstract: Embodiments described herein generally relate to the separation of carbon nanotubes by reversible gelation.

Abstract: Provided herein are devices and methods relating to detecting and/or correcting distortions and other events that can occur to a display surface so that a desired image is viewed despite the presence of a distortion in the display surface itself.

Abstract: Technologies described herein are generally related to graphene production. In some examples, a system is described that may include a first container, a second container, and/or a chamber. The first container may include a first solution with a reducing agent, while the second container may include a second solution with graphene oxide. The chamber may be in operative relationship with the first and the second containers, and configured effective to receive the first and second solutions and provide reaction conditions that facilitate contact of the first and second solutions at an interfacial region sufficient to produce graphene at the interfacial region.

Abstract: Embodiments described herein generally relate to the separation of carbon nanotubes by reversible gelation.

Abstract: Technologies described herein are generally related to repairing graphene on a porous support. In some examples, a method is described that may include receiving a graphene layer on a support. The graphene layer may include a hole and a pore. The method may further include applying a first reactive material to a first side of the graphene layer. The first reactive material may include molecules larger than the pore. A second reactive material may be applied through the support to a second side of the graphene layer. The second reactive material may include molecules larger than the pore. The first and second reactive materials may react in the hole to produce a plug in the hole and to repair the graphene layer.

Abstract: Windows, or other types of transparent materials, may be constructed to passively allow light from alternate sources to pass therethrough, while also being able to actively produce artificial light for providing illumination from one side of the window by means of an incorporated optical waveguide that accepts light from an edge of the window and disperses it from only one side of the window.

Abstract: Fluorophores or other indicators can be used to label and identify one or more defects in a graphene layer by localizing at the one or more defects and not at other areas of the graphene layer. A substrate having a surface at least partially covered by the graphene layer may be contacted with the fluorophore such that the fluorophore selectively binds with one or more areas of the surface of the underlying substrate exposed by the one or more defects. The one or more defects can be identified by exposing the substrate to radiation. A detected fluorescence response of the fluorophore to the radiation identifies the one or more defects.

Abstract: A disposable menstrual fluid fractionation apparatus for use in situ during menstruation is disclosed. The apparatus may include a filter configured to remove a particulate component of menstrual fluid from a liquid component of the menstrual fluid. A receptacle may be coupled to the filter. The filter, receptacle, and an analyte sensor may be integrated into a disposable feminine hygiene product. The integrated analyte sensor may be configured to detect a target analyte in the liquid component and indicate the presence/concentration of the target analyte.

Abstract: The present disclosure generally relates to conductive films and methods for forming conductive films. In some examples, a substrate may be provided having a dispersion of silica nanoparticles provided on a surface thereof. Carbon nanotubes may be adhered to the dispersion of silica nanoparticles on the surface of the substrate to provide the conductive film on the substrate.

Abstract: Technologies are generally described for a method and system configured effective to alter a defect area in a layer on a substrate including graphene. An example method may include receiving and heating the layer to produce a heated layer and exposing the heated layer to a first gas to produce a first exposed layer, where the first gas may include an amine. The method may further include exposing the first exposed layer to a first inert gas to produce a second exposed layer and exposing the second exposed layer to a second gas to produce a third exposed layer where the second gas may include an alane or a borane. Exposure of the second exposed layer to the second gas may at least partially alter the defect area.

Abstract: Techniques are generally described for touch-sensitive devices with biometric information determination capabilities. The touch-sensitive device may include one or more of a transmitter, a receiver, and a processor. The transmitter may be configured to emit light towards a surface of the touch-sensitive device and the receiver may be configured to receive reflected light from a touch to the touch-sensitive device. The processor may be arranged to receive signals from the receiver and determines biometric information, and in some examples location of touch, based on the signals.

Abstract: Implementations and techniques for metal air batteries including a composite anode are generally disclosed.

Abstract: Technologies are generally described for a nanocomposite polymer dielectric that may incorporate two types of nanoparticles and a polymer. One of the two types of nanoparticle may be a first, smaller nanoparticle, that may occupy spaces between larger second nanoparticles. Another of the two types of nanoparticle may be the second, larger, “high-?” nanoparticle, which supports the overall dielectric constant of the material. In an applied electric field, the first, smaller nanoparticle may redistribute local charge to homogenize electric fields in the dielectric material, tending to avoid the development of “hot spots”. Such a two-nanoparticle nanocomposite dielectric material may provide increased dielectric breakdown strength and voltage endurance in comparison with a nanoparticle dielectric which only contains a single type of “high-?” nanoparticle.

Abstract: A flame retardant additive includes red phosphorus adsorbed into a porous carrier. The carrier may be mixed with white phosphorus above its melting point (41° C.), so that liquid phosphorus is pulled into the pores of the carrier by capillary action. The phosphorus-loaded carrier may be heated above 250° C. to convert the white phosphorus to red phosphorus. The resulting red phosphorus-loaded carrier may retain flame retardant activity, and may also be protected from the environment for easier handling and formulation. By employing a carrier of a suitably small particle size, it is practical to incorporate the flame retardant red phosphorus-loaded carrier in thin films.

Abstract: Techniques are generally described for touch-sensitive devices with biometric information determination capabilities. The touch-sensitive device may include one or more of a transmitter, a receiver, and a processor. The transmitter may be configured to emit light towards a surface of the touch-sensitive device and the receiver may be configured to receive reflected light from a touch to the touch-sensitive device. The processor may be arranged to receive signals from the receiver and determines biometric information, and in some examples location of touch, based on the signals.

Abstract: Technologies are generally described for methods, systems, and structures that include patterns formed by optical lithography. In some example methods, a photoresist layer is applied to a substrate, and a grapheme layer can be applied to the photoresist layer. Light can be applied through a mask to the graphene layer, where the mask includes a pattern. The light can form the pattern on the graphene layer such that the pattern forms on the photoresist layer.

Abstract: Technologies are generally described for a graphene membrane with uniformly-sized nanoscale pores that may be prepared at a desired size using colloidal lithography. A graphene monolayer may be coated with colloidal nanoparticles using self-assembly, followed by off-axis metal layer deposition, for example. The metal layer may form on the colloidal nanoparticles and on portions of the graphene not shadowed by the nanoparticles. The nanoparticles may be removed to leave a negative metal mask that exposes the underlying graphene through holes left by the removed nanospheres. The bare graphene may be etched to create pores using an oxygen plasma or similar material, while leaving metal-masked regions intact. Pore size may be controlled according to size of colloidal nanoparticles and angle of metal deposition relative to the substrate. The process may result in a dense, hexagonally packed array of uniform holes in graphene for use as a membrane, especially in liquid separations.

Abstract: Technologies are generally described for composite membranes which may include a porous graphene layer in contact with a porous support substrate. In various examples, a surface of the porous support substrate may include at least one of: a thermo-formed polymer characterized by a glass transition temperature, a woven fibrous membrane, and/or a nonwoven fibrous membrane. Examples of the composite membranes permit the use of highly porous woven or nonwoven fibrous support membranes instead of intermediate porous membrane supports. In several examples, the composite membranes may include porous graphene layers directly laminated onto the fibrous membranes via the thermo-formed polymers. The described composite membranes may be useful for separations, for example, of gases, liquids and solutions.

Abstract: Technologies are generally described for gas filtration and detection devices. Example devices may include a graphene membrane and a sensing device. The graphene membrane may be perforated with a plurality of discrete pores having a size-selective to enable one or more molecules to pass through the pores. A sensing device may be attached to a supporting permeable substrate and coupled with the graphene membrane. A fluid mixture including two or more molecules may be exposed to the graphene membrane. Molecules having a smaller diameter than the discrete pores may be directed through the graphene pores, and may be detected by the sensing device. Molecules having a larger size than the discrete pores may be prevented from crossing the graphene membrane. The sensing device may be configured to identify a presence of a selected molecule within the mixture without interference from contaminating factors.

Abstract: Technologies are generally described for a system and process effective to coat a substance with graphene. A system may include a first container including graphene oxide and water and a second container including a reducing agent and the substance. A third container may be operative relationship with the first container and the second container. A processor may be in communication with the first, second and third containers. The processor may be configured to control the third container to receive the graphene oxide and water from the first container and to control the third container to receive the reducing agent and the substance from the second container. The processor may be configured to control the third container to mix the graphene oxide, water, reducing agent, and substance under sufficient reaction conditions to produce sufficient graphene to coat the substance with graphene to produce a graphene coated substance.