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Graphene has an ultra-high thermal conductivity (TC) along its basin plane. However, the TC of graphene/metal composites is still far below the expectation due primarily to the lack of sufficient graphene alignment in the metal matrix. Herein, we reported an efficient route to prepare the graphene nanoplatelet (GNP)/Cu composites with highly aligned GNPs by a vacuum filtration method followed by spark...
Contributed by the highly reactive, antibacterial, and readily reducible polyethylenimine (PEI), polyurethane (PU) composites incorporated with slightly reduced graphene oxide (SRGO) modified with PEI (SRGO-PEI) were prepared by in situ polymerization. X-ray photoelectron spectroscopy confirmed that SRGO-PEI was only slightly reduced under mild reducing conditions, because the carbon-to-oxygen atomic...
We demonstrate the direct dry transfer of large area chemical vapor deposition graphene to several polymers (low density polyethylene, high density polyethylene, polystyrene, polylactide acid and poly(vinylidenefluoride-co-trifluoroethylene) by means of only moderate heat and pressure, and the later mechanical peeling of the original graphene substrate. Simulations of the graphene–polymer interactions,...
Recent studies have demonstrated that significantly low sheet resistance (Rs) (<100 Ω/sq; comparable to ITO) were achieved in single-walled carbon nanotube (SWCNT) films treated with HNO 3 followed by thionyl chloride. Here we show that H 2 SO 4 can effectively reduce the Rs of SWCNT electrodes. H 2 SO 4 treatment generates defects (COOH and SO 3 ...
Molecular dynamics simulation is employed for the axial compression of both perfect and defective single-walled carbon nanotubes (SWCNTs). Morse potential, harmonic angle potential, a proper dihedral potential and the Lennard-Jones potential are used to simulate the interactions among carbon atoms. It is revealed that the buckling and axially compressive properties of SWCNTs obviously lie on the length,...
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