P-type boron-carbon (b-c) alloys over the single-phase region b9c to b4c exhibit very unusual semiconductor properties. for example, both the seebeck coefficient and electrical conductivity increase with temperature, making these alloys attractive for thermoelectric energy conversion. it appears… More

Better high temperature (1000-2000k) electrical conductors are needed to minimize the transmission (i2r) losses associated with space-based power supplies and rail guns for both space and terrestrial applications. with the availability of more conductive light-weight mateials, a system's weight can… More

The proposed program presents a plan to develop the preliminary design of a secondary thermoelectric power plan that can be used in the coast guard's major aids to navigation. this design will take the specific needs of the coast guard into consideration. this includes power level, size, cost, and… More

The work function is the energy needed to remove an electron from a metal surface, such as in thermionic emission. a lower work function allows the emitting surface to operate at a much reduced temperature for the same current. low work function single phase materials with refractory properties… More

Some heavy metal silicides have been identified as very promising high temperature thermoelectric materials that should yield much higher figures-of-merit than the presently used silicon-germanium-based alloys. it should also be possible to alloy some of these silicides with the known thermoelectric… More

A proposal is made to design an air-cooled 500 Watt thermoelectric generator for use the the USMC. This generator can have a low noise and IR signature. It can be operated either locally by a single switch operation or as a remote unit. The generator will be based on the use of a lead-telluride… More

Thermoelectric materials are used in a variety of power sources and peltier refrigerators. thedimensionless figure-of-merit (zt) is used as a measure of the relative effectiveness of these materials. the best known materials have zts of less than one. new solid state theory predicts that… More

The Hybrid engine for the electric car is critical in giving the vehicle the necessary range before its electric batteries need recharging. Waste heat recovery from the Hybrid engine with thermoelectric energy conversion can probably increase the engine efficiency by ~5% with present thermoelectric… More

Thermionic, thermoelectrica nd thermo-photovoltaic direct heat-to-electric power conversion technologies are to be considered for the auxiliary power requirements of gas turbine-powered rotocraft. These converters will comprise a bottoming cycle deriving source heat from the propulsion turbine… More

The group IV, V and VI diborides exhibit poor high temperature oxidation rresistance but it appears that some third elements can significantly improve this resistance. Also, it appears other diboride s with the AlB structure can form solid solutions with the group IV, V and VI diborides and though… More

An attempt will be made to fabricate multi-layer quantum well films (ml-qwfs) that should have an exceptionally high figure of merit (z) from materials that exhibit very low diffusion rates. such materials prevent the quantum well and barrier materials from interdiffusing, thereby degrading the… More

Renium is the current materials of choice for hot gas valves, but is expensive, heavy and limited by its strength to temperatures below 3500 degrees F. Ceramics, such as the diborides of zirconium and hafnium, are much lighter, and have a 900 degree F advantage over rhenium in strength. Present… More

Not Available We plan to use and develop appropriate technology and techniques to enhance information management, display of information, judgement and decision support, and individual and team performance in CIC environments. We think our approach will result in reducing the number of personnel… More

Not Available The Team of America's Phenix, Bayesian Systems and Gryphon Technologies proposes applying Bayes'Engine (TM) as an innovative non-destructive inspection (NDI) technique for increasing the number of successfully reworked gas turbine engine nozzle guide vane (NGV) segments. The proposed… More

65312 Future space missions require reliable, small power Radioisotope Thermoelectric Generators (RTGs) with power levels from 40 to 500 milli-Watts. Therefore, this project will develop small, low power thermoelectric modules with redundant circuitry (parallel circuit). By reducing the size of… More

The conceptual design of a safe, small thermoelectric generator (STEG) is being completed in Phase I. The overall objective is an environmentally friendly replacement for radiolumenescent lamps used in fire control instruments. Hi-Z will continueexploratory development of power sources for… More

65312 Future space missions, involving the powering of multiple remote sensors and periodic transmission of collected data back to earth, require redundant or parallel circuitry within very small and very reliable thermoelectric power supplies of 40 mW to 500 mW size. Space allocation and… More

65312 Future space missions, involving the powering of multiple remote sensors and periodic transmission of collected data back to earth, require redundant or parallel circuitry within very small and very reliable thermoelectric power supplies of 40 mW to 500 mW size. Space allocation and… More

70316 In close-spaced thermoelectric modules that use PbTe/TAGS as the N- and P-legs, cross contamination of elements occurs from one leg into the other, resulting in degraded power output as the compositions of the legs shift. Mica, typically used as a separator because of its low… More

"The erosion of four transition metal carbides in a 6100F rocket nozzle test has been correlated with predicted thermochemical reactions with the alumina formed by an aluminized propellant. Correlation with the reaction initiation temperature model (RITmodel) will permit improved compositions to be… More

"Hi-Z Technology, Inc. (Hi-Z) proposes to use thermoelectric devices in developing a miniature energy harvesting system for shipboard health monitoring sensors. Thermoelectric devices convert heat directly to electricity in compact solid-state modules. Hi-Zhas been in the business of converting… More

Hi-Z Technology, Inc. (Hi-Z) proposes to design, fabricate and test a prototype of the conceptual design for a miniature power-harvesting system, consisting of a thermoelectric generator (TEG) module, control electronics board, wireless sensor andtransceiver module to be used in health monitoring of… More

New thermoelectric materials with improved figure of merit, Z, are emerging from research laboratories and are soon to be available for applications. The need to conserve energy on UUVs points to the use of the new thermoelectric technology to moreefficiently cool critical electrical components.… More

An optimized off-the-shelf self-powered trap for haematophagous arthropods with an enhanced mosquito capturing efficiency will be designed, fabricated and tested by Hi-Z Technology and the John W. Hock Company. The self-powered feature will be realized byusing a fossil fuel (Diesel/JP-8/Propane)… More

A Diesel driven high efficiency, portable thermoelectric generator capable of producing 500 Watts, scalable to 1500 Watts will be designed at Hi-Z Technology. The unit will supply uninterruptible power at 28 VDC for a minimum of 8 hours. The generatorwill be capable of starting and operating from… More

A self-powered mosquito trap for capturing haematophagous arthropods with an enhanced capturing efficiency has designed, fabricated using off-the shelf components and has shown very good performance in Phase I. In Phase II it will be upgraded, tested and six prototype units will be delivered to the… More

The proposed program will provide the preliminary design of a 10 kilowatt thermoelectric generator that can be used on the Army's Stryker and other similar vehicles. the proposed generator will directly convert energy in the exhaust of the Stryker's engine to electricity using advanced quantum well… More

Hi-Z Technology, Inc. (Hi-Z) proposes to develop improved tantalum carbide sheet materials that can be laminated with graphite sheets for a zero erosion throat for aluminized propellant rocket motors. The tantalum carbide sheet will have a uniform composition in the range TaC0.7 to TaC0.89 to take… More

78825S The recovery of waste heat from exit gases can significantly increase the energy efficiency of industrial processes. Thermoelectric devices that match the waste gas thermal resistance can dramatically increase the efficiency of industrial and automotive waste heat recovery processes. A… More

Hi-Z will complete the design of a 10 kilowatt waste heat recovery thermoelectric generator that can be used on the Army's Stryker and other similar vehicles. One or more advanced quantum well thermoelectric modules with at least three times the efficiency of today's Bi2Te3 thermoelectrics will be… More

This proposal is to conduct a Phase I study of the design of a high volumetric energy density generator for the Navy that can be used in weapons systems requiring long storage times. The volumetric energy density goal is 1000 W-hr/l or 5 times greater than the present power supply. The proposed… More

Hi-Technology, Inc. (Hi-Z) proposes to use thermoelectric devices in developing an alternate method of providing power for wireless sensors. A thermoelctric gneator (TEG) converts heat directly to electicity in a compact, reliable, robust, solid-state module. Hi-Z has developed thermoelectric… More

Huge renewable heat sources are continuously being generated but are not being used. For cars and trucks, two thirds of the gasoline consumed is converted to waste heat and thrown away. Within the basic materials industries (aluminum plants, steel mills, oil refineries, etc.), about the same amount… More

Hi-Z Technology, Inc. has developed nanotechnology quantum well thermoelectric materials that have high Figures of Merit and can attain very high coefficients of performance (COP) to exceed the Army's objective for cooling room temperature detectors. Hi-Z's Si/SiGe solid state quantum well… More

In major industries of the U.S., vast amounts of waste heat are being lost in high temperature processes. For example, smelters and associated furnaces within the aluminum industry are generating very large amounts of waste heat, 21 trillion Btu per year. This waste heat could be converted to… More

Hi-Z Technology, Inc. (Hi-Z) proposes to use its thermoelectric generators (TEGs) in developing a modular power generation and management system to supplement Littoral Combat Ship (LCS) mission system power services. The TEG will convert engine waste heat or heat from an auxiliary burner to… More

A very large amount of waste heat (10 quads/year) is continually being generated by large industrial plants. This renewable source of energy could be tapped to replace more than 7% of the nation¿s imported oil, by using thermoelectric materials to convert this heat into electricity. However,… More

This project will investigate the use of quantum well thermoelectric technology to provide air conditioning for trucks. The use of quantum well films for thermoelectric cooling will provide a coefficient of performance (COP) that is equal to or greater than that of conventional vapor compression… More

GS Engineering has invented a novel, lightweight mine and IED neutralizing device that will make the current heavy roller technology obsolete. The GSE countermine system will allow lightweight vehicles to become capable of mine and IED clearing. This research effort has focused on innovative… More

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This Small Business Technology Transfer Phase I project will evaluate a novel approach to fabricate high efficiency quantum well thermoelectric films on low thermal conductivity, affordable substrates.… More

The systems currently used to cool truck cabs include a vapor compression system attached to the engine. This system uses a refrigerant fluid (R134A) that is potentially harmful to the environment. In fact, this fluid has been outlawed in Europe and likely will be outlawed in the United States… More

Hi-Z Technology, Inc. (Hi-Z) and the University of California San Diego propose to adapt Hi-Z's innovative Quantum Well (QW) thermoelectric (TE) technology to develop a TE cooler for the Army's base camp tents. The cooler is to be embedded in the flexible tent materials and powered by electricity… More

Hi-Z Technology, Inc. (Hi-Z) and the University of California San Diego propose to adapt Hi-Z"s innovative Quantum Well (QW) thermoelectric (TE) technology to develop a TE cooler for the Army"s base camp tents. The cooler is to be embedded in the flexible