摘要:
The present invention relates to polyurethane-urea elastomers with exceptional mechanical properties and enhanced elasticity based on molecular structure analysis. The present invention involves the synthesis of a polyurethane-urea elastomer using a combination of commercially available materials: (1) polyols with ultralow unsaturation and narrow polydispersity, (2) diisocyanates with symmetric steric conformation, and (3) bulky diamines between functional groups. The preparation method for the novel polyurethane-urea is disclosed. The subject elastomers have the highest reported elongation-at-break among known polyurethane elastomers.
摘要:
This invention relates to a synthesis of a linear fluorocopolymer having a plurality of pendant phosphorus-containing functional groups. The synthesized phosphorus-containing fluorocopolymer has chain linearity and narrow molecular weight distributions. It has applications as a lubricant additive that provides friction-reduction, anti-wear, and corrosion protection properties.
摘要:
The present invention relates to a novel composite for preventing ice adhesion. A superhydrophobic or superhydrophilic surface with a hydrophobic, low freezing point liquid adsorbed onto surface asperities results in a durable, renewable anti-icing surface. The preparation method for novel icing and rain protecting surface is disclosed.
摘要:
Systems and methods for fabrication of nanostructured solar cells having arrays of nanostructures are described, including nanostructured solar cells having a repeating pattern of pyramid nanostructures, providing for low cost thin-film solar cells with improved PCE.
摘要:
Improved quantum efficiency of multiple quantum wells. In accordance with an embodiment of the present invention, an article of manufacture includes a p side for supplying holes and an n side for supplying electrons. The article of manufacture also includes a plurality of quantum well periods between the p side and the n side, each of the quantum well periods includes a quantum well layer and a barrier layer, with each of the barrier layers having a barrier height. The plurality of quantum well periods include different barrier heights.
摘要:
An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least one Ti-halide bond loaded on the active magnesium halide, and an internal electron donor selected from one or more silicon esters compounds having formula (I). The method for preparing the catalyst components is that: adding spherical magnesium chloride alcoholate particles and the electron donor into the solution of titanium compound in sequence, and processing with the titanium compound for one or more times to obtain the catalyst. The catalyst system used for the olefin polymerization comprises the catalyst components, a cocatalyst and an external electron donor. The catalyst has high activity for the propylene polymerization, and the activity is 4399 gPP/gTi·h(50° C., 1 h, slurry polymerization at atmospheric pressure), and the isotacticity of the polymer is 98%.
摘要:
Parallel plate slot emission array. In accordance with an embodiment of the present invention, an article of manufacture includes a side-emitting light emitting diode configured to emit light from more than two surfaces. The article of manufacture includes a first sheet electrically and thermally coupled to a first side of the light emitting diode, and a second sheet electrically and thermally coupled to a second side of the light emitting diode. The article of manufacture further includes a plurality of reflective surfaces configured to reflect light from all of the surfaces of the light emitting diode through holes in the first sheet. The light may be reflected via total internal reflection.
摘要:
Heat spreading substrate. In accordance with an embodiment of the present invention, an apparatus includes a thermally conductive, electrically insulating regular solid, a first electrically conductive coating mechanically coupled to a first edge of the regular solid and a second electrically conductive coating mechanically coupled to a second edge of the regular solid. The first and the second electrically conductive coatings are electrically isolated from one another and the faces of the first electrically conductive coating, the second electrically conductive coating and the regular solid are substantially co-planar. The primary and secondary surfaces of the regular solid may be free of electrically conductive materials.
摘要:
High yield substrate assembly. In accordance with a first method embodiment, a plurality of piggyback substrates are attached to a carrier substrate. The edges of the plurality of the piggyback substrates are bonded to one another. The plurality of piggyback substrates are removed from the carrier substrate to form a substrate assembly. The substrate assembly is processed to produce a plurality of integrated circuit devices on the substrate assembly. The processing may use manufacturing equipment designed to process wafers larger than individual instances of the plurality of piggyback substrates.
摘要:
A system and method for managing mass compromise of financial transaction devices is disclosed. A method includes maintaining a summary of a transaction history for a financial transaction device, and forming a device history profile based on the transaction history, the device history profile including predictive variables indicative of fraud associated with the financial transaction device. A method further includes generating a fraud score based on the predictive variables, the fraud score representing a likelihood that the financial transaction device is compromised will be used fraudulently.