Abstract: The systems and methods described herein provide a wearable sweat sensing device. The device includes a sweat patch component including a sweat biochemical sensor patch having a substrate defining a hole, at least one biochemical sensor, and a capture wick including a tip that extends through the hole, the capture wick configured to channel sweat across the at least one biochemical sensor. The sweat patch component further includes a wick downstream from the capture wick and separated from the capture wick by a gap, and electronic circuitry disposed against at least one face of the wick, wherein an electronic response of the electronic circuitry changes as sweat flows through the wick. The wearable sweat sensing device further includes an electronics module component configured to facilitate assessing hydration of a wearer based on signals from the at least one biochemical sensor and the electronic circuitry.

Abstract: A system for monitoring medical conditions includes a conformable medical monitoring device that includes a first substrate layer, which includes an electronics module, many signal traces, and at least one electrode, such that one or more of the many signal traces electrically couple the at least one electrode to the electronics module. The conformable medical monitoring device includes a second substrate layer positioned over the electronics module, the first substrate layer, or any combination thereof to insulate the electronics module, the first substrate layer, or any combination thereof. The conformable medical monitoring device also includes a third substrate layer positioned over the second substrate layer, such that the third substrate layer reduces electromagnetic interference caused by a voltage pulse and includes an adjustable system coupled to the first substrate layer and that changes a position of the at least one electrode relative to the electronics module.

Abstract: The systems and methods described herein provide a wearable sweat sensing device. The device includes a sweat patch component including a sweat biochemical sensor patch having a substrate defining a hole, at least one biochemical sensor, and a capture wick including a tip that extends through the hole, the capture wick configured to channel sweat across the at least one biochemical sensor. The sweat patch component further includes a wick downstream from the capture wick and separated from the capture wick by a gap, and electronic circuitry disposed against at least one face of the wick, wherein an electronic response of the electronic circuitry changes as sweat flows through the wick. The wearable sweat sensing device further includes an electronics module component configured to facilitate assessing hydration of a wearer based on signals from the at least one biochemical sensor and the electronic circuitry.

Abstract: A system for monitoring medical conditions includes a conformable medical monitoring device that includes a first substrate layer, which includes an electronics module, many signal traces, and at least one electrode, such that one or more of the many signal traces electrically couple the at least one electrode to the electronics module. The conformable medical monitoring device includes a second substrate layer positioned over the electronics module, the first substrate layer, or any combination thereof to insulate the electronics module, the first substrate layer, or any combination thereof. The conformable medical monitoring device also includes a third substrate layer positioned over the second substrate layer, such that the third substrate layer reduces electromagnetic interference caused by a voltage pulse and includes an adjustable system coupled to the first substrate layer and that changes a position of the at least one electrode relative to the electronics module.

Abstract: A system includes a conformable biopotential sensor that withstands a defibrillation pulse. The conformable biopotential sensor includes a polymer substrate, a plurality of electrodes printed on the polymer substrate, a signal trace printed on the polymer substrate, and one or more resistors printed on the polymer substrate and in electrical communication with an electrode of the plurality of electrodes via the signal trace. One or both of the one or more resistors and the polymer substrate withstand a defibrillation pulse. The conformable biopotential sensor further includes a coating layer applied to the one of both of the one or more resistors, wherein the coating is more thermally conductive than the polymer substrate.

Abstract: A method for storing holographic data, said method comprising: step (A) providing an optically transparent substrate comprising a polymer composition and a light absorbing chromophore, said polymer composition comprising a continuous phase and a dispersed phase, said dispersed phase being less than about 200 nm in size; and step (B) irradiating a volume element of the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to cause a phase change in at least a portion of the dispersed phase within the volume element of the substrate to produce within the irradiated volume element refractive index variations corresponding to the holographic interference pattern, thereby producing an optically readable datum corresponding to the volume element.

Abstract: A method of making a membrane assembly is provided. The method comprises forming an inorganic membrane layer disposed on a substrate, and forming a plurality of macropores in the substrate at least in part using anodization. Further, a membrane assembly is provided. The membrane assembly comprises a filtering membrane that is coupled to an anodized substrate comprising a plurality of macropores.

Abstract: A method of making a membrane assembly is provided. The method comprises forming an inorganic membrane layer disposed on a substrate, and forming a plurality of macropores in the substrate at least in part using anodization. Further, a membrane assembly is provided. The membrane assembly comprises a filtering membrane that is coupled to an anodized substrate comprising a plurality of macropores.

Abstract: A method for storing holographic data, said method comprising: step (A) providing an optically transparent substrate comprising a polymer composition and a light absorbing chromophore, said polymer composition comprising a continuous phase and a dispersed phase, said dispersed phase being less than about 200 nm in size; and step (B) irradiating a volume element of the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to cause a phase change in at least a portion of the dispersed phase within the volume element of the substrate to produce within the irradiated volume element refractive index variations corresponding to the holographic interference pattern, thereby producing an optically readable datum corresponding to the volume element.

Abstract: Photodetector arrangements, designs and fabrication techniques are described related to semiconductor nanostructures. Arrangements and techniques are described which utilize a nano-patterned template for growing semiconductor nanostructures and/or heterostructures. Resulting photodetectors are also described.

Abstract: A storage media can comprise: a plastic substrate, an optical layer, a reflective layer disposed between the optical layer and the substrate, and an adhesive layer disposed between the optical layer and the reflective layer. The optical layer can have an optical layer composition different from the substrate composition. The storage media has a radial deviation over time of less than or equal to 1.15 degrees at a radius of 55 mm, when exposed to a cycle at 25° C. of 50% relative humidity—90% relative humidity—50% relative humidity.

Abstract: The present invention is directed toward a method for fabricating low-defect nanostructures of wide bandgap materials and to optoelectronic devices, such as light emitting sources and lasers, based on them. The invention utilizes nanolithographically-defined templates to form nanostructures of wide bandgap materials that are energetically unfavorable for dislocation formation. In particular, this invention provides a method for the fabrication of phosphor-less monolithic white light emitting diodes and laser diodes that can be used for general illumination and other applications.

Abstract: An article comprises a textured surface disposed on a substrate. The surface has an effective liquid wettability sufficient to generate, with a reference liquid, a contact angle in a range from about 120° to about 180°. The surface comprises a material having a nominal liquid wettability sufficient to generate, with the reference liquid, a nominal contact angle in a range from about 60° to about 90°, the material comprising at least one material selected from the group consisting of a polymer and a ceramic. The properties of the surface may include low-drag or low-friction, self-cleaning capability, and resistance to icing, fouling, and fogging, and the like. Methods of making such a surface are also described.

Abstract: A method of making nanoscale ordered composites of covalent ceramics through block copolymer-assisted assembly. At least one polymeric precursor is mixed with a block copolymer, and self-assembly of the mixture proceeds through an annealing process. During the annealing step, the polymeric precursor cross-links to form a structure robust enough to survive both the order-disorder transition temperature the block copolymer and the pyrolysis process, yielding ordered nanocomposites of high temperature ceramic materials. The method yields a variety of structures and morphologies. A ceramic material having at least one ceramic phase that has an ordered structure on a nanoscale and thermally stable up to a temperature of at least about 800° C. is also disclosed. The ceramic material is suitable for use in hot gas path assemblies, such as turbine assemblies, boilers, combustors, and the like.

Abstract: In some embodiments, the present invention is directed to methods by which nanoparticle interactions can be controlled, compositions with which such interactions can be controlled, and devices which utilize the control of such interactions. Generally, such methods involve grafting polymer to electromagnetically-functional cores to form a core/shell nanoparticle, assembling a plurality of such core/shell nanoparticles to form an assembly, and exposing the assembly to at least one environmental stimulus to which the polymer is responsive so as to modulate the interparticle interactions of the electromagnetically-functional cores. The present invention is also directed to the compositions resulting from such methods and to the methods and associated devices for controlling the interparticle interactions in such compositions.

Abstract: Disclosed herein is a photovoltaic cell comprising an absorber that can absorb electromagnetic radiation; a first substrate comprising a first conductive surface; a second substrate comprising a second conductive surface that is opposed to the first conductive surface and faces the first conductive surface of the first substrate; an electron transporter that is in electrical communication with the second conductive surface of the second substrate, but is electrically insulated from the first substrate; a hole transporter that is in electrical communication with the first conductive surface of the first substrate, but is electrically insulated from the second substrate; wherein the hole transporter and/or the electron transporter are chemically bonded to an electrically insulating sheath; and wherein the hole transporter and/or the electron transporter are chemically bonded to the absorber.

Abstract: The present invention provides a nano-calorimeter device operable for measuring and characterizing the thermodynamic and other physical properties of materials that are confined to essentially nano-scale dimensions. The nano-calorimeter device including a thin film membrane having a first surface and a second surface. The nano-calorimeter device also including a frame structure disposed adjacent to and in thermal contact with the first surface of the thin film membrane, the frame structure defining a plurality of hollow cells adjacent to and in thermal contact with the first surface of the thin film membrane.

Abstract: The present invention provides a nano-calorimeter device operable for measuring and characterizing the thermodynamic and other physical properties of materials that are confined to essentially nano-scale dimensions. The nano-calorimeter device including a thin film membrane having a first surface and a second surface. The nano-calorimeter device also including a frame structure disposed adjacent to and in thermal contact with the first surface of the thin film membrane, the frame structure defining a plurality of hollow cells adjacent to and in thermal contact with the first surface of the thin film membrane.

Abstract: A storage media having a radial deviation of less than or equal to about 1.15 degrees at a radius of 55 mm is disclosed. In one embodiment, the storage media comprises: a plastic substrate, an optical layer and a data storage layer disposed therebetween. A reflective layer is disposed between the data storage layer and the substrate.

Abstract: A storage media having a radial deviation of less than or equal to about 1.15 degrees at a radius of 55 mm is disclosed. In one embodiment, the storage media comprises: a plastic substrate, an optical layer and a data storage layer disposed therebetween. A reflective layer is disposed between the data storage layer and the substrate.