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Search Results - Engineering & Physical Sciences

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Carbothermic-Silicide Method of Preparing Rare Earth Master Alloys Containing 5 to 40 Atomic Percent Silicon from the Respective Oxides
Summary: Iowa State University and Ames Laboratory researchers have developed a method of preparing rare earth-silicon alloys using carbon as a reducing agent instead of calcium that is less expensive than the traditional methods and more environmentally friendly.Description: The present invention provides a one-step process whereby rare earth-cont...
Published: 7/17/2019
Category(s): Ames Laboratory, Engineering & Physical Sciences, Materials
Precast Heated Concrete Panels Using Electrically Conductive Concrete or Hydronic Heating Technology
Summary: Iowa State University researchers have developed a method of producing precast slabs of electrically conductive concrete described in ISURF 4796 as well as hydronic heated-pavement systems, in which a heated fluid is circulated in pipes that are embedded in the pavement structure. The heated pavement systems allow for quick and efficient ...
Published: 6/21/2019
Category(s): Engineering & Physical Sciences, Materials
Electrically-Conductive Asphalt Concrete Containing Carbon Fibers
Summary: Iowa State University researchers have developed a method of producing electrically-conductive asphalt mastic for efficient snow removal and deicing. The mastic is modified with both carbon fiber and graphite powder to decrease the electrical resistivity of the asphalt, allowing for an electric current to flow between electrodes to genera...
Published: 6/21/2019
Category(s): Engineering & Physical Sciences, Materials
Electrically Conductive Concrete Mixture Composition and System Design for Resistive Heating of Pavements with Low Volume Fractions of Carbon Microfiber
Summary: Iowa State University researchers have developed a method of producing a heating pavement system using electrically conductive concrete for efficient deicing. The invention incorporates carbon microfibers in the electrically conductive concrete layer which decreases the electrical resistivity of the concrete, as well as electrodes to appl...
Published: 6/21/2019
Category(s): Engineering & Physical Sciences, Materials
Structured, Kirigami Films for Controllable Adhesion
Summary: ISU researchers have developed an adhesive that utilizes kirigami to provide anisotropic bonding, allowing for direction-controlled adhesion.Description: Recently, techniques in kirigami (Japanese art of folding that involves cutting) have been utilized to provide highly tunable stiffness and geometry in various materials. Iowa State Univ...
Published: 6/21/2019
Category(s): Engineering & Physical Sciences, Materials
Versatile Low Field Portable Magnetic Field Generation System
Summary: ISU researchers have developed a new non-resonant NMR pulse generating circuit that improves the response of the applied oscillating magnetic field, reducing ringdown time and improving probe signal-to-noise ratio. The pulse generation circuit features high pulse rate for increased bandwidth and high amplitude for improved instrument sign...
Published: 6/10/2019
Category(s): Engineering & Physical Sciences, Imaging, Medical Devices, Sensors & Controls
Biphasic Pulsed Magnetic Fields Using Intertwined Coils
Summary: ISU researchers have developed a new non-resonant NMR pulse generating circuit that improves the response of the applied oscillating magnetic field, reducing ringdown time and improving probe signal-to-noise ratio. The intertwined coils and switching circuit generate pulses for both positive and negative voltage cycles, improving device s...
Published: 6/10/2019
Category(s): Engineering & Physical Sciences, Medical Devices, Imaging, Sensors & Controls
Solvent-Free, Solid Phase Synthesis of Hybrid Organolead Mixed-Halide Perovskites with Superior Purity
Summary: ISU and Ames Laboratory researchers have developed a method of producing organolead halide perovskites for the use of low cost, high power conversion efficiency(PCE) photovoltaic cells. Since perovskite solar cells are tunable, the theoretical PCE limit is higher than that of silicon solar cells, and organolead halide perovskites have enh...
Published: 5/24/2019
Category(s): Ames Laboratory, Energy, Cleantech & Environmental, Engineering & Physical Sciences, Materials
Enhanced Isothermal Nucleic Acid Amplification Reaction Systems using Magnetic Ionic Liquids
Summary: Iowa State University researchers have developed a method for rapid detection of pathogens.Description: Isothermal nucleic acid amplification (INAA) is an alternative method to standard amplification methods, such as polymerase chain reaction (PCR), for the rapid detection of nucleic acids from pathogens. INAA is highly sensitive, has high...
Published: 4/11/2019
Category(s): Life Sciences, Healthcare, Engineering & Physical Sciences
Highly efficient biobased transparent UV-blocking coatings fabricated using hydroxyethyl cellulose and ZnO nanoparticles
Summary: Iowa State University researchers have developed a thin transparent ink coating with UV-blocking properties and high transparency.Description: Ultra-violet (UV) light is a high-energy light that can cause damage to organic matter, including the degradation of foods and beverages. As such, UV-blocking coatings are typically applied to the o...
Published: 4/9/2019
Category(s): Engineering & Physical Sciences, Materials
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