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Showing 1 to 12 of 12 for “"Wiedemann-Franz Law"”.
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Modeling the Thermal and Electrical Properties of Different Density Sintered Binder Jetted Copper for Verification and Revision of The Wiedemann-Franz Law
… which links these two properties is called the Wiedemann-Franz Law. Also there is an emerging technology within Additive Manufacturing called Binder Jet Printing which can print high purity copper without heat stress within the material. Due to the Binder Jet Printings ability to print high …
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Thermoreflectance for Contactless Sintering Characterization: From Metal Nanoparticles to Stretchable Conductors
… well with thermal conductivity calculated using Wiedemann-Franz law from electrical conductivity measurements. Measurement time is reduced to 12 s by choosing a small number of measurement frequencies instead of a full frequency sweep and measuring them simultaneously. A Monte Carlo simulation …
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An X-ray study of charge-density-wave pinning and a measurement of the thermal conductivity in blue bronze
… be in good agreement with that predicted by the Wiedemann-Franz law and by the measured electrical conductivity of blue bronze.
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Nonlinear Electro-Thermal Transport in Metallic Carbon Nanotubes
… in the presence of elastic backscattering the Wiedemann-Franz law is restricted to each branch with its specific temperature and that (ii) the thermoelectric power vanishes due to electron-hole symmetry. The model provides an interpretation of the distribution function measured in copper …
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Heat, Charge and Spin Transport of Thin Film Nanostructures
… carbon nanotube thin films. We use the Wiedemann-Franz law to calculate contributions to thermal conductivity and find interesting underlying physics as we dope the films, thus changing the Fermi level. Adapting the tube diameter leads to structural differences, which greatly affects …
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Thermal, Magnetic, and Electrical Properties of Thin Films and Nanostructures: From Magnetic Insulators to Organic Thermoelectrics
… in thermal conductivity that ’violates’ the Wiedemann-Franz law.</p>
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Thermal conductivity in organic semiconducting polymers
… The Lorenz number calculated using classic Wiedemann-Franz law was found to be much higher in doped polymers with relatively low electrical conductivity than the value for typical metals; however, this number would drop significantly at higher electrical conductivity, making these doped …
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Functional materials for thermal regulation
… from the measured electrical conductivity, the Wiedemann-Franz law, and an estimate of the temperature dependence of the Lorenz number L(T). The total thermal conductivity is dominated by electron contribution and varies between 13 W m-1 K-1 at x = 0.76 and 20 W m-1 K-1 at x = 1.00 for T = 300 K …
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Applications of conformal field theories in topological phases of matter
… and thermal Hall transport violating the Wiedemann-Franz law. We further construct two descendant non-Abelian quantum Hall states at filling 8, each carrying bosonic chiral (G2)1 or (F4)1 edge theories, and hosting Fibonacci anyonic excitations in the bulk. Finally, we discover a new …
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Experimental Realisation of Energy Harvesters built from Quantum Dots and Quantum Wells
… model (not affected by limitations of the Wiedemann- Franz law) suggests the actual efficiency to be about 0.5hC. Experimental observations of thermal power, voltage and efficiency at different values of IHeat and RLoad have also been reproduced by this model. There are small quantitative …
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Using high pressure to study thermal transport and phonon scattering mechanisms
… hexagonal crystal structure. I used the Wiedemann-Franz law to derive the associated electrical resistivity, and found it consistent with the Bloch-Gr{\""u}neisen model. Not all crystalline point defects are alike in how they scatter phonons and reduce the thermal conductivity of mixed …
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Uv-liga Compatible Electroformed Nano-structured Materials For Micro Mechanical Systems
… micro machined valves attribute to the scaling laws. The second type of micro mechanical valves developed is a in situ assembled solid metallic (nickel) valves. Both the valve substrates for inlet and outlet channels and the valve flap, as well as the valve stopper were made by nickel through a …