The Regents of University of California Patent applications |
Patent application number | Title | Published |
20150194606 | HIGH MOBILITY POLYMER THIN-FILM TRANSISTORS WITH CAPILLARITY-MEDIATED SELF-ASSEMBLY - Embodiments of the invention include methods and materials for preparing organic semiconducting layers, for example one used in an organic semiconductor device including a substrate with a nanostructured surface and a polymeric semiconductor film overlying the nanostructured surface. Aspects of the invention use capillary action to modulate polymer chain self-assembly on a surface and unidirectional alignment at a critical buried interface where charge carriers migrate between a dielectric and the polymer. By controlling the properties of the surfaces upon which polymers are disposed, artisans can enhance the transistor saturated mobilities of conjugated polymers. | 07-09-2015 |
20140370395 | MODIFIED CARBON BLACK MATERIALS FOR LITHIUM-ION BATTERIES - A lithium (Li) ion battery comprising a cathode, a separator, an organic electrolyte, an anode, and a carbon black conductive additive, wherein the carbon black has been heated treated in a CO | 12-18-2014 |
20140329288 | IN VIVO CONVERSION OF LIGHT ENERGY INTO HYDROGEN GAS - The present disclosure provides isolated phototrophic cells for producing hydrogen and methods for use thereof. The methods involve inducing endo-hydrogenase expression in the phototrophic cells through the use of a regulatable promoter and harvesting light energy for hydrogen production. In preferred embodiments the hydrogenase is a member of the Hyq family of endo-hydrogenases and the isolated phototrophic cell is a | 11-06-2014 |
20140180998 | EFFICIENT SEARCHING OF STATIONARY DATASETS - A saliency function is computed to indicate the saliency of each of a plurality of data points in a dataset. For each local maximum in the saliency function, a segment of the dataset is inserted into an index. | 06-26-2014 |
20140042390 | INTERPENETRATING NETWORKS OF CARBON NANOSTRUCTURES AND NANO-SCALE ELECTROACTIVE MATERIALS - An interpenetrating network assembly with a network of connected flakes of nano-scale crystalline carbon and nano-scale particles of an electroactive material interconnected with the carbon flakes is provided. The network assemblies are particularly suited for energy storage applications that use metal oxide electroactive materials and a single charge collector or a source and drain. Interpenetrating networks of graphene flakes and metal oxide nanosheets can form independent pathways between source and drain. Nano-scale conductive materials such as metal nanowires, carbon nanotubes, activated carbon or carbon black can be included as part of the conductive network to improve charge transfer. | 02-13-2014 |
20110108815 | MULTI-RATE RESIST METHOD TO FORM ORGANIC TFT CONTACT AND CONTACTS FORMED BY SAME - A method for forming a thin film electrode for an organic thin film transistor of the invention provides a multi-layer mask on a substrate with an electrode area opening in a top layer of the mask that is undercut by openings in other layers of the mask. A thin film of metal is deposited in the electrode area on the substrate. Removing the multi-layer mask leaves a well-formed thin film electrode with naturally tapered edges. A preferred embodiment of the invention is a method for forming a thin film electrode for an organic thin film transistor. The method includes depositing a first layer of photoresist on a substrate. The photoresist of the first layer has a first etching rate. A second layer of photoresist is deposited on the first layer of photoresist. The photoresist of the second layer has a second etching rate that is lower than the first etching rate. The first and second layer of photoresist are patterned by exposure. Developing the first and second layers of photoresist provides an electrode area on the substrate. An electrode is deposited in the electrode area. Lift-off of the first and second layers is performed. The electrode that is deposited has a tailored, tapered edge. A preferred embodiment thin film electrode in an organic thin film transistor has a tapered edge with a contact angle of approximately +40±4.4°. | 05-12-2011 |
20110073531 | DYNAMIC EQUILIBRIUM SEPARATION, CONCENTRATION, AND MIXING APPARATUS AND METHODS - Particles are separated, concentrated, or mixed within a fluid by means of a fluid-containing cell having a longitudinal axis, a cross-sectional area generally perpendicular to the longitudinal axis, and at least one particle motivating force directionally interacting with at least one recurrent circulating fluid flow generally aligned with the longitudinal axis within the fluid containing cell. | 03-31-2011 |
20110042353 | NANOMETER-SCALE ABLATION USING FOCUSED, COHERENT EXTREME ULTRAVIOLET/SOFT X-RAY LIGHT - Ablation of holes having diameters as small as 82 nm and having clean walls was obtained in a poly(methyl methacrylate) on a silicon substrate by focusing pulses from a Ne-like Ar, 46.9 nm wavelength, capillary-discharge laser using a freestanding Fresnel zone plate diffracting into third order is described. Spectroscopic analysis of light from the ablation has also been performed. These results demonstrate the use of focused coherent EUV/SXR light for the direct nanoscale patterning of materials. | 02-24-2011 |
20100319746 | HIGH EFFICIENCY THERMOELECTRIC POWER GENERATION USING ZINTL-TYPE MATERIALS - The invention disclosed herein relates to thermoelectrically-active p-type Zintl phase materials as well as devices utilizing such compounds. Such thermoelectric materials and devices may be used to convert thermal energy into electrical energy, or use electrical energy to produce heat or refrigeration. Embodiments of the invention relate to p-type thermoelectric materials related to the compound Yb | 12-23-2010 |
20100092982 | Regulation of Gene Expression by Protein Methylation - The invention relates to the cDNA and deduced amino acid sequence of the Coactivator Associated arginine (R) Methyltransferase protein, CARM1. A method is described for the use CARM1 to regulate gene expression in vivo. CARM1 has also been used to methylate arginine residues of histones, synthetic peptides, and other proteins. A method to use CARM1 to screen for drugs that inhibit its methyltransferase activity is also described, as is a method to screen for drugs that modulate CARM1's interactions with other proteins. | 04-15-2010 |