Topology Identification in Distribution Network with Limited Measurements

Problem: Need a reliable and low cost way to detect changes in the status of switching devices, especially circuit breakers in distribution networks. Technology: This invention considers a distribution system with circuit breakers and very few sensors which do not need to be located at the circuit breakers. The number of sensors is assumed to […]

Production of PVD Coatings Based on Nb(CN)

Problem: Need for harder, tougher, and more elastic coatings for better performance in tool applications. Technology: This invention uses the traditional Physical Vapor Deposition method to create coatings from pure NbC, multilayer NbC/TiN and NbC particles distributed in a nickel matrix. All coatings are sputtered from pure compounds and cosputtering of NbC and nickel. Christopher […]

New Structure and Technology for Power Semiconductor Devices

Problem: Current nitride-based transistors suffer from buffer leakage current and low performance of the normally-off nitride-based transistors. Technology: This invention describes a new nitride-based transistor which has a 3-D trench structure between the Source and Drain contacts and a conductive electrode covering at least some portions of the top and sidewalls of the 3D trenches. […]

Millimeter-Wave Heating, Radiometry, and Calorimetry of Granite Rock to Vaporization

Problem: The vaporization parameters of rocks, concretes, and refractory ceramics are not readily available. Technology: This invention describes a procedure to carry out MMW studies of rock fusion and vaporization that is applicable to all refractory materials. This includes using MMWs to melt and vaporize rock and measuring the MMW emissivity of molten rocks, the […]

Layer-by-Layer Separator Membrane for Lithium-Ion Battery

Problem: Improving the ionic conductivity of the membrane Technology: This invention uses the layer-by-layer technique to prepare tunable films for use in lithium ion battery separators. The number of bilayers can be selected to control thickness. Polyelectrolyte chemical structure can be selected to control ionic conductivity and lithium-ion transference number. These multilayers can be formed […]