Concerning metallic nanoparticles, a statistical simulation method to predict the electron mean free path of a nanoparticleis developed. And the phonon-contributed specific heat and phonon group velocity are also analyzed. Then, the kinetic theory is used to obtain the electron thermal conductivity and...
Heat conductivity is the ability of a body to transfer energy in the form of heat in a non-uniformly heated solid (without thermal radiation). From: Fundamentals of Evaluation and Diagnostics of Welded Structures, 2012 About this pageAdd to MendeleySet alert ...
Thermal conductivity of the samples were measured with the help of thermal properties analyzer. The results evidenced that the diffusion of the nanoparticles is uniform inside the paraffin matrix and nano-Si3N4 particles greatly improved the thermal conductivity of the base paraffin. Nevertheless, the...
Such an additional thermal resistance can reduce the magnitude of the thermal conductivity improvement in the nanocomposites. In this study, the Monte Carlo simulation was employed to generate the nanoparticle random distribution and to simulate phonon transport in the nanocomposites. The effects of ...
Results show that SiC nanoparticle beds have excellent thermal insulation performance with a thermal conductivity even lower than 0.07W/(m·K), which is attributed to the large thermal contact resistances between nanoparticles. There is a large size effect of SiC on thermal conductivity, and the ...
The size effects of phonon transport in nanoparticle composites were studied, and the results show that the thermal conductivity of nanoparticle composites can be lower than that of the minimum alloy value, which is of great interest to thermoelectric energy conversion. It was also found that ...
3a, b. Even though the curved borosilicate surfaces induced light distortion, the highly bright metal surface could verify the integrity of the Zn nanowires (Supplementary Fig. 5). Furthermore, electrical conductivity was measured for multiple wire segments of 1.5 cm to validate the integrity of...
of ~ 680 nm was found to have a thermal conductivity (kNW) of 0.037 ± 0.002 W/m·K. The thermal conductivity of the nanowires is more than an order of magnitude lower than that of bulk materials (k ~ 0.36–1.9 W/m·K) and highly conductive (σ ~ 3 × 104...
between rGO nanosheets and the anchoring of Ag-rGO via NFC can afford an exceptional thermal functionality for NFC composites, allowing feasible fabrication of microelectronic devices. As a result, the nanocomposites exhibit a highly thermal conductivity of up to 27.55 W m−1 K−1, ...
However, such bonds might obstruct g-C3N4 in-plane electron conduction and result in weak conductivity. Therefore, complete polymerization and very crystalline g-C3N4 with few defects (acting as carrier annihilation sites) are desirable. Wang et al. [155] studied self-polymerization of dicyandiamide...