A nano-stitching method is proposed and investigated to modify graphene bilayers. Based this method, four types of low energy carbon allotropes, ”wormhole graphene” allotropoes, are obtained and their structures, stabilities and electronic properties are investigated using first principles methods. We find that all of these wormhole graphene allotropoes are more favorable than graphdiyne and dy...

The 1-, 2-, and 3-dimensional structures obtained from conjugated rings of carbon atoms are reviewed. They include finite small and large molecules (benzenoids, collarenes, beltenes, cyclacenes, cyclophenacenes, Möbius analogs, nanotori) and infinite macromolecules, nets and tilings (graphene, defected graphene, fractal benzenoids, nano-tubes, nano-cones, etc.). A few challenges for future expe...

A novel bath lily-like graphene sheet-wrapped nano-Si composite synthesized via a simple spray drying process exhibits a high reversible capacity of 1525 mAh g(-1) and superior cycling stability, which could be attributed to a synergistic effect between highly conductive graphene sheets and active nanoparticles in the open nano/micro-structure."

Hot mixed asphalt (HMA) is a mixture of particles (coarse and fine aggregates) interstitial fluid (asphalt binder) designed to compact harden for long-lasting roads. In this study, we implement two-scale approach capture the compaction behaviour hot mixtures using both granular-slurry rheology (GSR) at smaller scale discrete element method (DEM) simulation compactor. We show that modelling effo...

Natural nacre, which consists of almost 95 vol% inorganic content (calcium carbonate) and 5 vol% elastic biopolymers, possesses a unique combination of remarkable strength and toughness, which is attributed to its hierarchical nano-/ microscale structure and precise inorganic–organic interface. Inspired by the intrinsic relationship between the structures and the mechanical properties lying in ...

A theoretical model is proposed that describes the effect of graphene platelets pullout on fracture toughness ceramic/graphene composites. The dependences concentration and dimensions are calculated using a yttria-stabilized zirconia (YSZ)/graphene composite as an example. Calculations predict if from ceramic matrix dominant mechanism, then maximum achieved in case longest thinnest possible pla...

In this work, we have designed, fabricated and experimentally characterized a printed graphene nano-flakes enabled flexible and conformable wideband radar absorber. The absorber covers both X (8-12 GHz) and Ku (12-18 GHz) bands and is printed on flexible substrate using graphene nano-flakes conductive ink through stencil printing method. The measured results show that an effective absorption (a...

We prepared hydrazine-reduced materials from both graphite oxide (GO) particles, which were not exfoliated, and completely exfoliated individual graphene oxide platelets, and then analyzed their chemical and structural properties by elemental analysis, XPS, TGA, XRD, and SEM. Both reduced materials showed distinctly different chemical and structural properties from one another. While hydrazine ...

The development of new mechanical actuators that convert external stimuli such as thermal, light, electrical, or chemical energy to mechanical energy depends on the development of new materials. Reversible mechanical actuators based on carbon nanotubes (CNTs) and hydrogel polymers have suggested applications in robotics, sensors, mechanical instruments, microscopy tips, switches, and memory chi...

Nano-perforation of 2D graphene sheets is a recent and strategically significant means to exploit such materials in modern applications such as energy production and storage. However, current options for the synthesis of holey graphene (hG) through nano-perforation of graphene involve industrially undesirable steps viz., usage of expensive/noble metal or silica nanoparticle templates and/or haz...