Abstract: Embodiments of the present disclosure include sensors, arrays of conductometric sensors, devices including conductometric sensors, methods of making conductometric sensors, methods of using conductometric gas sensors, methods of enhancing sensor response with light, and the like.

Abstract: Embodiments of the present disclosure include sensors, arrays of sensors, devices including sensors, methods of making sensors, methods of using sensors, and the like, whereupon exposure to a magnetic field results in embodiments having enhanced sensitivity. In an embodiment, the present disclosure includes porous silicon (PS) sensors, arrays of PS sensors, devices including PS sensors, methods of making PS sensors, methods of using PS gas sensors, and the like, that include or use a magnetic field.

Abstract: Embodiments of the present disclosure include sensors, arrays of conductometric sensors, devices including conductometric sensors, methods of making conductometric sensors, methods of using conductometric gas sensors, and the like.

Abstract: Embodiments of the present disclosure include sensors, arrays of conductometric sensors, devices including conductometric sensors, methods of making conductometric sensors, methods of using conductometric gas sensors, methods of enhancing sensor response with light, and the like.

Abstract: A nanowire, nanosphere, metallized nanosphere, and methods for their fabrication are outlined. The method of fabricating nanowires includes fabricating the nanowire under thermal and non-catalytic conditions. The nanowires can at least be fabricated from metals, metal oxides, metalloids, and metalloid oxides. In addition, the method of fabricating nanospheres includes fabricating nanospheres that are substantially monodisperse. Further, the nanospheres are fabricated under thermal and non-catalytic conditions. Like the nanowires, the nanospheres can at least be fabricated from metals, metal oxides, metalloids, and metalloid oxides. In addition, the nanospheres can be metallized to form metallized nanospheres that are capable as acting as a catalyst.

Abstract: Devices including conductometric porous silicon gas sensors, methods of fabricating conductometric porous silicon gas sensors, methods of selecting a device, methods of detecting a concentration of a gas, and methods of analyzing data.

Abstract: Embodiments of the present disclosure provide for methods of transforming from one crystal structure to another crystal structure in TiO2 nanocolloids and TiO2-xNx nanocolloids.

Abstract: Oxynitride nanoparticles, methods of preparation thereof, and methods of use thereof are disclosed. One representative oxynitride nanoparticle includes a MxOyNz nanoparticle, where x is in the range of about 1 to 3, y is in the range of about 0.5 to less than 5, and z is in the range of about 0.001 to 0.5.

Abstract: Nanostructures and methods of fabrication thereof are disclosed. One representative nanostructure includes a silicon dioxide (SiO2)/tin oxide (SnOx) nanostructure, where x is between about 1 to about 2. The SiO2/SnOx nanostructure includes a SiO2 nanostructure having SnOx nanoclusters dispersed over a portion of the surface of the SiO2 nanostructure.

Abstract: Devices including conductometric porous silicon gas sensors, methods of fabricating conductometric porous silicon gas sensors, methods of selecting a device, methods of detecting a concentration of a gas, and methods of analyzing data.

Abstract: A sensor is disclosed. A representative sensor includes a silicon substrate having a porous silicon region. A portion of the porous silicon region has a front contact is disposed thereon. The contact resistance between the porous silicon region and the front contact is between about 10 ohms and 100 ohms.