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Ceramics are widely used as engineering materials due to their high strength; however, their lack of plasticity is a major drawback. We report that dual-phase amorphous carbon (a-C) reveals high yield strength of ∼E/11 (E is elastic modulus, and E/10 is theoretical limit for ideal material) and large plasticity of ∼70% at room temperature in uniaxial compression tests. To the best of our knowledge,...
We developed a W/WOx-supported Ni catalyst for the diameter-controlled growth of single-walled carbon nanotubes (SWNTs) by chemical vapor deposition (CVD) valid for different substrates and broad growth conditions. The Ni nanoparticles anchored on W/WOx are well dispersed and show superior stability to high temperature. Under broad CVD windows of temperature and carbon feedstock supply conditions,...
Reduced graphene oxide (rGO) has been prepared through hydrothermal reduction, an environmentally safe reduction of graphene oxide (GO). rGO is used to fabricate a highly compatible and orderly stacked lamellar structure of composite membranes with chitosan (CS). This method also facilitates a continuous large-scale fabrication of membranes. Conventionally, GO and CS are the preferred compounds for...
Horizontally aligned single-walled carbon nanotube (SWNT) arrays are of great importance for building nanoelectronics devices and integrate circuits. We developed a method to grow SWNT arrays uniformly distributed all over the quartz substrate. Instead of pre-patterning catalysts on the substrates, Cu are evaporated under the reductive atmosphere of H2 and nucleate on the surface of quartz to form...
The mechanisms of NH3 and NO2 detection by single-walled carbon nanotube-based devices are investigated by ab initio calculations and the non-equilibrium Greens function (NEGF) methodology. While both NH3 and NO2 can physisorb to a pristine carbon nanotube, we show that their adsorption only results in small current changes through the device. For a carbon nanotube (CNT) attached to gold nanowire...
A free-standing fluorinated graphene (F-graphene) was fabricated by the simple liquid exfoliation of a fluorinated graphite (F-graphite) in a 2-propanol/water mixture, and was used as the cathode material of primary lithium ion batteries. As-prepared F-graphene as a very high fluorine content (49.7at%), and an amorphous-like two-dimensional nanostructure. These features facilitate the rapid diffusion...
Coaxial nanocables of single-walled carbon nanotubes (SWCNTs) sheathed with amorphous silicon oxide were directly synthesized by a hydrogen arc discharge method. As-prepared nanocables are usually tens of microns in length and about 10–30nm in diameter. The sheath of the nanocables is amorphous silicon oxide, while the core is high quality SWCNTs. Each cylinder-shaped nanocable contained one to several...
Hierarchical porous, magnetic Fe 3 O 4 @carbon nanofibers (Fe 3 O 4 @CNFs) based on polybenzoxazine precursors have been synthesized by a combination of electrospinning and in situ polymerization. The benzoxazine monomers could easily form thermosetting nanofibers by in situ ring-opening polymerization and subsequently be converted into CNFs by carbonization. The resultant...
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