Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. A method of verifying the accuracy of an analyte monitoring device includes receiving a fluid sample, identifying the fluid sample as a control solution, and analyzing the fluid sample.

Abstract: A method for passing photovoltaic current between a subcell formed from a single crystal Group ll-VI semiconductor material and a subcell formed from a single crystal Group IV semiconductor material, includes the steps of forming a first subcell by an epitaxial growth process, the first subcell having a first upper surface; forming a tunnel heterojunction between the first subcell and the second subcell, and tunneling carriers formed by light incident on the first and second subcells through the tunnel heterojunction, thereby permitting a photoelectric series current to flow through the first and second subcells.

Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. A method of verifying the accuracy of an analyte monitoring device includes receiving a fluid sample, identifying the fluid sample as a control solution, and analyzing the fluid sample.

Abstract: A Light Floatable Structure is attached to the footprint of a Mobile Electronic Device when near an area where the device might be dropped accidentally into water or other similar liquid where the device might sink. The attached Light Floatable Structure provides the buoyancy needed to prevent the Mobile Electronic Device and attached Light Floatable Structure from sinking. The dimensions and shape of this This Light Floatable Structure are confined to the length and width of the footprint of the Mobile Electronic Device to preserve its feel and adheres to the Mobile Electronic Device with an interface that allows easy attachment and removal of the Light Floatable Structures from the Mobile Electronic Devices when desired.

Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. A method of verifying the accuracy of an analyte monitoring device includes receiving control information, receiving a fluid sample, identifying the fluid sample as a control solution, and analyzing the control solution.

Abstract: A photovoltaic cell comprises a first subcell formed of a Group IV semiconductor material, a second subcell formed of a Group II-VI semiconductor material, and a tunnel heterojunction interposed between the first and second subcells. A first side of the tunnel heterojunction is formed by a first layer that is adjacent to a top surface of the first subcell. The first layer is of a first conductivity type, is comprised of a highly doped Group IV semiconductor material. The other side of the tunnel heterojunction is formed by a second layer that adjoins the lower surface of the second subcell. The second layer is of a second conductivity type opposite the first conductivity type, and is comprised of a highly doped Group II-VI semiconductor material. The tunnel heterojunction permits photoelectric series current to flow through the subcells.

Abstract: A photovoltaic cell comprises a first subcell formed of a Group IV semiconductor material, a second subcell formed of a Group II-VI semiconductor material, and a tunnel heterojunction interposed between the first and second subcells. A first side of the tunnel heterojunction is formed by a first layer that is adjacent to a top surface of the first subcell. The first layer is of a first conductivity type, is comprised of a highly doped Group IV semiconductor material. The other side of the tunnel heterojunction is formed by a second layer that adjoins the lower surface of the second subcell. The second layer is of a second conductivity type opposite the first conductivity type, and is comprised of a highly doped Group II-VI semiconductor material. The tunnel heterojunction permits photoelectric series current to flow through the subcells.

Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. A method of verifying the accuracy of an analyte monitoring device includes receiving control information, receiving a fluid sample, identifying the fluid sample as a control solution, and analyzing the control solution.

Abstract: A Light Floatable Structure is attached to the footprint of a Mobile Electronic Device when near an area where the device might be dropped accidentally into water or other similar liquid where the device might sink. The attached Light Floatable Structure provides the buoyancy needed to prevent the Mobile Electronic Device and attached Light Floatable Structure from sinking. The dimensions and shape of this This Light Floatable Structure are confined to the length and width of the footprint of the Mobile Electronic Device to preserve its feel and adheres to the Mobile Electronic Device with an interface that allows easy attachment and removal of the Light Floatable Structures from the Mobile Electronic Devices when desired.

Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. Methods for verifying the accuracy of an analyte monitoring device include receiving control information from a test cartridge, transporting control material to an analysis site, determining the presence of the control material, analyzing the control material, and providing a pass or fail signal.

Abstract: A photovoltaic cell comprises a first subcell formed of a Group IV semiconductor material, a second subcell formed of a Group II-VI semiconductor material, and a tunnel homojunction interposed between the first and second subcells. A first side of the tunnel homojunction is formed by a first layer that is adjacent to a top surface of the first subcell. The first layer is of a first conductivity type and is comprised of a highly doped Group IV semiconductor material. The other side of the tunnel homojunction is formed by a second layer that adjoins the lower surface of the second subcell. The second layer is of a second conductivity type opposite the first conductivity type and also is comprised of a highly doped Group IV semiconductor material. The tunnel homojunction permits photoelectric series current to flow through the subcells.

Abstract: A device includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration.

Abstract: These are devices and methods of delivering calibration or control information to a device, such as an analyte monitor. The devices may include a first portion configured to be grasped by the hand of the user, and a second portion including a reservoir and a flexible neck. The reservoir may contain a control material that contains a target analyte in a known or predetermined concentration.

Abstract: A device is described that includes: a first portion configured to be grasped by the hand of the user, and a second portion defining a reservoir containing a control material, wherein the control material contains a target analyte in a known or predetermined concentration. Related arrangements and methods are also described.

Abstract: A photovoltaic cell comprises a first subcell formed of a Group IV semiconductor material, a second subcell formed of a Group II-VI semiconductor material, and a tunnel homojunction interposed between the first and second subcells. A first side of the tunnel homojunction is formed by a first layer that is adjacent to a top surface of the first subcell. The first layer is of a first conductivity type and is comprised of a highly doped Group IV semiconductor material. The other side of the tunnel homojunction is formed by a second layer that adjoins the lower surface of the second subcell. The second layer is of a second conductivity type opposite the first conductivity type and also is comprised of a highly doped Group IV semiconductor material. The tunnel homojunction permits photoelectric series current to flow through the subcells.

Abstract: A photovoltaic cell comprises a first subcell formed of a Group IV semiconductor material, a second subcell formed of a Group II-VI semiconductor material, and a tunnel heterojunction interposed between the first and second subcells. A first side of the tunnel heterojunction is formed by a first layer that is adjacent to a top surface of the first subcell. The first layer is of a first conductivity type, is comprised of a highly doped Group IV semiconductor material. The other side of the tunnel heterojunction is formed by a second layer that adjoins the lower surface of the second subcell. The second layer is of a second conductivity type opposite the first conductivity type, and is comprised of a highly doped Group II-VI semiconductor material. The tunnel heterojunction permits photoelectric series current to flow through the subcells.

Abstract: Expungement ions, preferably including hydrogen ions, are implanted into a face of a first, preferably silicon, substrate such that there will be a maximum concentration of the expungement ions at a predetermined depth from the face. Subsequently a monocrystalline Group II-VI semiconductor layer, or two or more such layers, is/are grown on the face, as by means of molecular beam epitaxy. After this a second, preselected substrate is attached to an upper face of the Group II-VI layer(s). Next, the implanted expungement ions are used to expunge most of the first substrate from a remnant thereof, from the grown II-VI layer, and from the second substrate.

Abstract: Structures and methods to inject electrons into an insulator from a semiconductor layer that are then collected in a thin layer of a direct semiconductor material which in turn emits light by bandgap recombination.

Abstract: A method for producing wafer splitting from ion implantation into silicon after low temperature direct bonding with surface roughness that is ˜1 nm (RMS). This result is an order of magnitude smoother than the previous work (˜10 nm RMS). The key improvement in this work is the use of a low temperature bond resulting in a strong bond before the material is cut. The smooth as-split surfaces produced using a low temperature bond are very important for creation of very thin (<50 nm) silicon-on-insulator (SOI), three-dimensional bonded structures and nanostructures that are split after processing.

Abstract: Structures and methods to inject electrons into an insulator from a semiconductor layer that are then collected in a thin layer of a direct semiconductor material which in turn emits light by bandgap recombination.