Multiple Networks of Oxides and Carbon Nanotubes
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Wednesday, 28 January 09 - 06:38 PM (GMT) By Bob Nidever in Latest Inventions |
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Scientists at UCLA have developed a structure and method of fabrication for creating composite networks of carbon nanotubes (CNTs) and indium-tin-oxide (ITO), both commonly used transparent conductive network materials. Together this system provides high conductivity with high transparency, and added mechanical robustness.
Researchers at UCLA have identified the structure and enabling fabrication method for creating a multiple network of CNTs and ITO that demonstrates enhanced performance with respect to transparency, electrical conductivity, and mechanical durability. This reduces the required amount of ITO needed to achieve a superior film, and has a long list of advantages over previous transparent conductive networks.
Potential applications in: Touch screens; Displays; Electromagnetic shielding; Solar Cells; LEDs MORE [2008-831]
Carbon Nanotube Composites for Supercapacitors
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Thursday, 08 January 09 - 11:41 PM (GMT) By Bob Nidever in Latest Inventions |
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UCLA engineers have developed a nanocomposite material that vastly improves the charge storage capability of electrochemical supercapacitors. This innovation poises ECs for commercialization in electronic, communication, medical, and automotive industries.
Researchers at UCLA have created a nanocomposite material that vastly improves the charge storage capability of the EC/ supercapacitors. The unique composite consists of vanadium pentaoxide nanowires (VNW) with varying amounts of carbon nanotube (CNT) supported vanadium pentaoxides. This unique CNT-VNW structure achieves higher specific energy, higher specific power, and enhanced electrochemical capacitance for supercapacitor applications. Furthermore, the CNT-VNW composite structure imparts higher capacitance than either CNT or VNW alone. MORE [2009-058]
Low Temperature Wafer Bonding of III-V Materials via Dry Passivation
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Thursday, 08 January 09 - 11:18 PM (GMT) By Bob Nidever in Latest Inventions |
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Researchers at UCLA have developed a method for wafer bonding via a unique surface treatment and low-temperature processing sequence that offers high bond adhesion, electrical conductivity continuity across the interface, and optical transparency. Because of the reduced temperatures used in the processing steps, devices with more complicated fabrication schemes can be used without having to worry about their degradation. MORE [2008-544]
A Wideband Phase Modulation Technique Suitable for Polar Transmitters
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Friday, 05 December 08 - 11:08 PM (GMT) By Bob Nidever in Latest Inventions |
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UCLA electrical engineers have developed a technique that allows polar transmitters to be compatible with wideband systems. The innovation will greatly reduce the power consumption in handheld wireless devices, thereby increasing battery lifetime.
Electrical Engineers at UCLA have developed a discrete-time wideband phase modulation technique that is compatible with polar transmitters. This innovation breaks through previous limitations, making polar architectures compatible with wideband communication systems such as W-CDMA, W-LAN, and WiMAX. Not only is the phase signal bandwidth extended, but common problems of delay mismatch are resolved using this novel discrete-time approach. MORE [2009-048]
A Method for Fabricating Dislocation-free Strained Si Thin-films using Porous Silicon Substrates
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Wednesday, 03 December 08 - 09:19 PM (GMT) By Bob Nidever in Latest Inventions |
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Researchers at UCLA have developed a method for fabricating strained Si thin films without introducing any dislocations during the fabrication process. MORE [2005-731]
Measuring K-Wise Independence for Large Data Sets
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Friday, 14 November 08 - 10:12 PM (GMT) By Bob Nidever in Latest Inventions |
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UCLA scientists have developed the first approach to measure correlations in large volumes of data streams quickly and efficiently. Data streams are ubiquitous in marketing, financial, security, sensor, web, biological, and communication applications, and the novel algorithm described here a major breakthrough in data mining and prediction.
Researchers at UCLA have created the first algorithm for measuring correlations in continuous and large data streams. This algorithm represents a novel combinatorial approach to analyzing second moment, or variance of dependent sketches of data streams. Correlations between multidimensional data can readily be acquired, while maintaining efficient dimensionality reduction. MORE [2008-759]
Observation of Nuclear Fusion Driven by a Pyroelectric Crystal
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Thursday, 13 November 08 - 10:16 PM (GMT) By Bob Nidever in Latest Inventions |
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UCLA scientists have developed a tabletop system capable of generating small-scale nuclear fusion.
Researchers at UCLA have identified a method for generating fusion under desktop condition by using the extremely large electric fields produced during the heating of a pyroelectric crystal to accelerate deuterium ions into collisions that generate the fusion. MORE [2005-363]
High-throughput Solution Processing of Large Scale Graphene for Device Applications
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Friday, 31 October 08 - 11:42 PM (GMT) By Bob Nidever in Latest Inventions |
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Researchers at UCLA have developed a novel solution process for the large-scale production of single layered graphene. The resulting graphene sheets have the largest area yet reported by an order of magnitude, resulting in significantly easier processing. Field effect devices were also fabricated by conventional photolithography that displayed currents that were 3 orders of magnitude higher than any every observed for chemically produced graphene. This versatile technique reproducibly produces large graphene sheets, enabling a vast array of applications. MORE [2008-422]
Aligned Nanotube/Nanoribbon Permeable Base Transistor and the Method of Making
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Monday, 27 October 08 - 08:47 PM (GMT) By Bob Nidever in Latest Inventions |
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Scientists in the Electrical Engineering Department at UCLA have identified a way to use either aligned carbon nanotubes or graphene nanoribbons in the base layer of a permeable base transistor to provide high speed, high current, and high frequency operation never before seen in permeable base transistors.
Researchers at UCLA have identified a way to use either aligned carbon nanotubes or graphene nanoribbons in the base layer region of their permeable base transistor, which improves the performance over those made with randomly deposited materials. MORE [2008-837]
Conformal Composite Right/Left Handed Leaky Wave Antenna
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Friday, 10 October 08 - 10:38 PM (GMT) By Bob Nidever in Latest Inventions |
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UCLA electrical engineers have developed and reduced to practice a conformal composite right/left handed leaky wave antenna which can be mounted on curved surfaces and vehicles, opening up applications in automotive, military, and aerospace industries.
Researchers at UCLA have developed and tested the first conformal CRLH LW antenna, allowing these antennae to be mounted on curved surfaces whereby dispersion engineering was used to compensate for the conformational effect. The conformal CRLH LW structure performs backfire-to-end fire radiation and beam scanning by frequency tuning. Furthermore, varactor diodes can be employed to perform electronic beam scanning at desirable fixed operation frequencies. Lastly, an array factor approach was developed to accurately test and analyze the conformal CRLH LW antenna structure. The novel conformal CRLH LW system was found to be comparable to a conventional planar system in terms of radiation characteristics, bandwidth, and return loss. MORE [2008-215]
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