摘要:
A light sensor substrate comprises a base made from a semi-conductive material and topped with a layer of an electrically non-conductive material. A first electrode and a plurality of carbon nanotube (CNT)-based conductors are positioned on the layer of electrically non-conductive material with the CNT-based conductors being distributed in a spaced apart fashion about a periphery of the first electrode. Each CNT-based conductor is coupled on one end thereof to the first electrode and extends away from the first electrode to terminate at a second free end. A second or gate electrode is positioned on the non-conductive material layer and is spaced apart from the second free end of each CNT-based conductor. Coupled to the first and second electrode is a device for detecting electron transfer along the CNT-based conductors resulting from light impinging on the CNT-based conductors.
摘要:
A sensor has a plurality of carbon nanotube (CNT)-based conductors operatively positioned on a substrate. The conductors are arranged side-by-side, such as in a substantially parallel relationship to one another. At least one pair of spaced-apart electrodes is coupled to opposing ends of the conductors. A portion of each of the conductors spanning between each pair of electrodes comprises a plurality of carbon nanotubes arranged end-to-end and substantially aligned along an axis. Because a direct correlation exists between resistance of a carbon nanotube and carbon nanotube strain, changes experienced by the portion of the structure to which the sensor is coupled induce a change in electrical properties of the conductors.
摘要:
A process for preparing an oxidation/reduction catalyst system includes providing a sol-gel precursor; providing a metal oxide wash coat mixture; and dispersing the sol-gel precursor in the metal oxide wash coat mixture to provide a dispersion of sol-gel precursor in metal oxide wash coat mixture. This dispersion of sol-gel precursor in metal oxide wash coat mixture is then deposited on a support, which is subsequently thermally-treated in an oxygen-containing environment to drive off volatiles and oxidize metallic components, thereby producing a thermally-treated support. Finally, a noble metal coating is applied to the thermally-treated support.
摘要:
The invention described herein involves a novel approach to the production of oxidation/reduction catalytic systems. The present invention serves to stabilize the tin oxide reducible metal-.oxide coating by co-incorporating at least another metal-oxide species, such as zirconium. In one embodiment, a third metal-oxide species is incorporated, selected from the group consisting of cerium, lanthanum, hafnium, and ruthenium. The incorporation of the additional metal oxide components serves to stabilize the active tin-oxide layer in the catalytic process during high-temperature operation in a reducing environment (e.g., automobile exhaust). Moreover, the additional metal oxides are active components due to their oxygen-retention capabilities. Together, these features provide a mechanism to extend the range of operation of the tin-oxide-based catalyst system for automotive applications, while maintaining the existing advantages.
摘要:
An exhaust gas treatment system having an exhaust gas inlet section, an oxygen enrichment system, catalyst holding arms, and an exhaust gas outlet section is disclosed. The exhaust gas inlet and outlet sections can be designed to mate to existing exhaust gas plumbing systems for industrial facilities. The optional oxygen enrichment system helps optimize catalytic performance by maintaining excess oxygen in the exhaust gas stream and by imparting greater turbulence to the exhaust gas stream. Disposed within each catalyst holding arm is at least one catalyst coated substrate where the catalytic oxidation of formaldehyde and other volatile organic compounds occurs. The catalytic substrate can be catalyst coated bricks, particles, beads, fabrics, or filter materials. Each catalyst holding arm can be selectively closed off using upstream and downstream isolation valves. Catalyst coated substrate longevity can be increased by the inclusion of an optional filter upstream of the catalyst coated substrates.
摘要:
In a method for fertilizing plants, a water source is attached to a fertilizer distribution device including a controlled release fertilizer, the water source is activated, and a controlled release fertilizer enriched solution of water is distributed from the fertilizer distribution device upon a plant or the ground. The fertilizer distribution device includes the supply of controlled release fertilizer, an inlet configured to attach to a water source and an outlet configured to release a flow of fertilizer enriched water from the fertilizer distribution device. The supply of controlled release fertilizer includes a set of granules. The granules have a plurality of different solubility rates.
摘要:
A rail system may include a rail buoyant in a fluid, and a vehicle buoyant in the fluid. The vehicle may be electromagnetically and/or mechanically coupled to the rail for movement along the rail.
摘要:
This invention relates generally to a platinized tin oxide-based catalyst. It relates particularly to an improved platinized tin oxide-based catalyst able to decompose nitric oxide to nitrogen and oxygen without the necessity of a reducing gas.
摘要:
In a method for fertilizing plants, a water source is attached to a fertilizer distribution device including a controlled release fertilizer, the water source is activated, and a controlled release fertilizer enriched solution of water is distributed from the fertilizer distribution device upon a plant or the ground. The fertilizer distribution device includes the supply of controlled release fertilizer, an inlet configured to attach to a water source and an outlet configured to release a flow of fertilizer enriched water from the fertilizer distribution device. The supply of controlled release fertilizer includes a set of granules. The granules have a plurality of different solubility rates.