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A hybrid Boltzmann transport equation model coupled with a two-temperature model is developed to simulate the heat dissipation in single layer graphene (SLG) suspended or supported on SiO2 and with/without Cu contacts. This hybrid model includes the phonon transport in SLG, electron-phonon interaction (EPI) in SLG, and phonon/electron transmission at the interface between SLG and its surroundings...
Three-dimension (3D) porous reduced graphene oxide (RGO) scaffold has attracted increasing attention in bone tissue engineering due to its favorable osteoinductivity. In this paper, a 3D porous RGO composite was prepared from graphene oxide (GO) and nano-hydroxyapatite (nHA) via self-assembly, thus constructing biomimetic scaffold for bone defect reparation. Detailed studies were performed to evaluate...
By means of density functional theory calculation that includes van der Waals (vdW) interactions, we study adsorption and diffusion of lithium in graphene, graphite and the corresponding lower-dimensional structures with different edge morphology. Because of the presence of unique edge states, the edge modified systems exhibit remarkably enhanced lithium binding energies with significantly better...
We have investigated the magnetoresistance (MR) behavior of few-layer graphene grown on copper foils by chemical vapor deposition (CVD). We have found that the graphene consisting of 3–5 layers with fewer defects shows weak localization and positive MR effects, while the positive MR effect disappeared in graphene with higher defect density. The positive MR observed in our graphene samples with fewer...
Porous poly(vinylidene fluoride) fibers were prepared by electrospinning from solutions in dimethylformamide, poly(ethylene oxide) (PEO) and water. The PVDF fiber mats were then converted into electrospun carbon fiber paper using a low temperature chemical stabilization treatment (“dehydrofluorination”) followed by carbonization at 1000°C. The resulting self-supporting carbon fiber paper exhibits...
An increasing number of studies have been devoted to studying the respiratory toxicity of carbon nanomaterials, but little information is known, thus far, on the biodistribution of these nanomaterials after inhalation or intratracheal instillation. We synthesized and labeled a polyhydroxylated derivative of fullerene C 60 (OH) x (x=22,24) with 99m Tc. With single photon emission...
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