Abstract: An improved supercapacitor includes a first and second electrode with each electrode made at least in part from a highly-porous electrically conductive material, a insulative separator separating the electrodes; a first electrically conductive current collector in physical and electrical contact with the first electrode; and a second electrically conductive current collector in physical and electrical contact with the second electrode, wherein at least one current collector is configured to have multiple separate portions with each portion having a current capacity that varies as a function of current passing through during capacitive operation.

Abstract: Apparatuses and systems for removing water vapor from a gas stream and for providing water purification, recovery and/or concentration. The apparatuses and systems employ a graphene oxide or a perforated graphene monolayer membrane to separate liquid water molecules and/or water vapor molecules from gasses, liquids, and other substances such as a wet muck or an aqueous sample. In one embodiment, an apparatus for removing water from a gas or liquid stream includes a first lumen, a second lumen, and a graphene oxide membrane separating the first lumen from the second lumen. Water molecules within a humid gas or liquid stream introduced into the first lumen pass through the graphene oxide membrane into a dry gas stream introduced into the second lumen.

Abstract: An improved supercapacitor includes a first and second electrode with each electrode made at least in part from a highly-porous electrically conductive material, a insulative separator separating the electrodes; a first electrically conductive current collector in physical and electrical contact with the first electrode; and a second electrically conductive current collector in physical and electrical contact with the second electrode, wherein at least one current collector is configured to have multiple separate portions with each portion having a current capacity that varies as a function of current passing through during capacitive operation.

Abstract: A nanosensor and methods to manufacture are disclosed. For example, a detection system for detecting the presence of a target substance can include a nanosensor that includes a sensing layer, and a plurality of sockets embedded within the body of the sensing layer, each socket having a physical profile matching a shape of the target substance such that, when target substances occupy the sockets, at least one measurable physical characteristic of the sensing layer changes.

Abstract: Three-dimensional (3D) graphene nanoribbons and methods for fabricating 3D graphene nanoribbons that may readily function as solenoid windings and the like. In one embodiment, a method of fabricating a 3D graphene nanoribbon (100) may include coating a side surface (102A) of a 3D insert (102) with a metal (104) appropriate for graphene growth thereon. The method may also include growing a layer (106) of graphene directly on the metal coating. The method may also include removing a strip of the graphene layer and metal coating (106/104) to expose the side surface (102A) of the insert (102) while leaving a line (108) of graphene on metal winding around the insert (102) and extending continuously from a first end (108A) of the line (108) to a second end (108B) of the line (108).

Abstract: Graphene nanoribbons and methods for fabricating graphene nanoribbons, particularly those with long lengths, are provided. In one embodiment, a method (400) for fabricating a graphene nanoribbon (100) includes preparing (410) a mask for application on a substrate (102). The mask may include a continuous line of masking material spiraling outward from a first end (104) of the line to a second end (106). The method (400) also includes depositing (420) a graphene layer (108) over a top surface (102A) of the substrate (102), applying (430) the mask to the substrate (102) over the graphene layer (108), removing (440) an unmasked portion of the graphene layer (108), and removing (450) the masking material from a remaining portion of the graphene layer (108) to leave a continuous line of graphene on the surface (102A) of the substrate (100) corresponding with the mask.

Abstract: Apparatuses and systems for removing water vapor from a gas stream and for providing water purification, recovery and/or concentration. The apparatuses and systems employ a graphene oxide or a perforated graphene monolayer membrane to separate liquid water molecules and/or water vapor molecules from gasses, liquids, and other substances such as a wet muck or an aqueous sample. In one embodiment, an apparatus for removing water from a gas or liquid stream includes a first lumen, a second lumen, and a graphene oxide membrane separating the first lumen from the second lumen. Water molecules within a humid gas or liquid stream introduced into the first lumen pass through the graphene oxide membrane into a dry gas stream introduced into the second lumen.

Abstract: A nanosensor and methods to manufacture are disclosed. For example, a detection system for detecting the presence of a target substance can include a nanosensor that includes a sensing layer, and a plurality of sockets embedded within the body of the sensing layer, each socket having a physical profile matching a shape of the target substance such that, when target substances occupy the sockets, at least one measurable physical characteristic of the sensing layer changes.

Abstract: Graphene nanoribbons and methods for fabricating graphene nanoribbons, particularly those with long lengths, are provided. In one embodiment, a method (400) for fabricating a graphene nanoribbon (100) includes preparing (410) a mask for application on a substrate (102). The mask may include a continuous line of masking material spiraling outward from a first end (104) of the line to a second end (106). The method (400) also includes depositing (420) a graphene layer (108) over a top surface (102A) of the substrate (102), applying (430) the mask to the substrate (102) over the graphene layer (108), removing (440) an unmasked portion of the graphene layer (108), and removing (450) the masking material from a remaining portion of the graphene layer (108) to leave a continuous line of graphene on the surface (102A) of the substrate (100) corresponding with the mask.

Abstract: A device for lifting and attaching a wide-base truck tire and wheel to the frame of a road tractor. The device includes a support structure attached to the frame of the vehicle, a channel-shaped support beam attached to a frame of a tractor, a hoist comprising a lifting mechanism, and a structure for holding a wide-base truck tire in conjunction with the channel-shaped support beam.