High-Electrical-Conductivity Multilayer Graphene Formed by …
The layer exchange technique enables high-quality multilayer graphene (MLG) on arbitrary substrates, which is a key to combining advanced electronic devices with carbon materials. We synthesize ...
Polystyrene@graphene oxide-Fe3O4 as a novel and …
Polystyrene (PS)-coated magnetic graphene oxide (GO-Fe3O4) nanocomposite has been prepared and characterized by FT-IR, TEM and VSM techniques, and its catalytic activity has been evaluated in the multi-component synthesis of two series of indene derivatives. The three-component condensation of ninhydrin/isatin, malononitrile and active …
Graphene-Based Metamaterial Absorber with Perfect Multi-band …
In this paper, we propose an absorber with adjustable single-layer graphene multi-band perfect absorption, which has the advantages of simple structure, polarization insensitivity, tunability, multi-band absorption, and high sensitivity. The device can achieve four perfect absorption peaks at the same time, and the absorption rate of all absorption peaks is …
The effect of carbon nanotubes and graphene on the mechanical ...
DOI: 10.1016/J.CPLETT.2013.10.060 Corpus ID: 95964434; The effect of carbon nanotubes and graphene on the mechanical properties of multi-component polymeric composites @article{Dervishi2013TheEO, title={The effect of carbon nanotubes and graphene on the mechanical properties of multi-component polymeric composites}, author={Enkeleda …
In situ synthesis of graphene oxide in multi-walled carbon …
A remarkable synergetic effect between the multi-graphene platelets (MGPs) and multi-walled carbon nanotubes (MWCNTs) in improving the mechanical properties and thermal conductivity of epoxy ...
Graphene oxide composite hydrogels for wearable devices
For graphene oxide (GO) composite hydrogels, a two-dimensional GO material is introduced into them, whose special structure is used to improve their properties. GO contains abundant oxygen-containing functional groups, which can improve the mechanical properties of hydrogels and support the application needs. Especially, the unique-conjugated structure of …
Graphene Oxide-Based Multi-Component Antimicrobial Hydrogels
Abstract. Graphene oxide (GO)-based hydrogel composed of magnesium oxide (MgO) and povidone-iodine (PVP-I) is synthesized. GO in the hydrogel plays two roles; gelator by self-assembling and carrier for MgO and PVP-I. MgO particles act as cross-linking initiators and fillers that increase the cohesion and adhesion strengths of the hydrogels.
A comprehensive review on the thermal, electrical, and …
Nowadays, there are growing demands for developing economical and multi-functional polymeric materials that simultaneously have high thermal conductivity, optimized electrical conductivity, and improved mechanical properties. Due to its outstanding physical and mechanical properties, graphene can significantly endow epoxy polymers with novel properties. As obtaining large …
Progress and prospects of graphene-based materials in
Reasonable design and applications of graphene-based materials are supposed to be promising ways to tackle many fundamental problems emerging in lithium batteries, including suppression of electrode/electrolyte side reactions, stabilization of electrode architecture, and improvement of conductive component. Therefore, extensive fundamental …
Mechanical properties of graphene, defective graphene, multilayer ...
Graphene has attracted large research interest for its excellent physical, electrical, chemical and mechanical properties such as high thermal and electrical conductivity, high specific surface area, high elastic moduli, etc. [[1], [2], [3]].As a consequence, graphene finds its use in numerous applications; from electronics to sensors to energy harvesting and storage …
Tuning the electronic transport properties of graphene through ...
We demonstrate the possibility to tune the electronic transport properties of graphene mono-layers and multi-layers by functionalisation with fluorine. For mono-layer samples, with increasing the fluorine content, we observe a transition from electronic transport through Mott variable range hopping (VRH) in two dimensions to Efros-Shklovskii VRH. Multi-layer …
Self-Healing Titanium Dioxide Nanocapsules-Graphene/Multi …
The integration of self-healing capabilities into flexible electronics arouses extensive attention. The application of self-healing electronics with multifunctional properties in a variety of exceptional environments has been identified to be significantly challenging and not yet proven to be fully viable thus far. In the present study, the self-healing octadecane loaded titanium dioxide ...
Graphene synthesis, characterization and its applications: A review
Graphene is a carbon nanomaterial made of two-dimensional layers of a single atom thick planar sheet of sp 2-bonded carbon atoms packed tightly in a honeycomb lattice crystal [13], [17].Graphene''s structure is similar to lots of benzene rings jointed where hydrogen atoms are replaced by the carbon atoms Fig. 1 a and is considered as hydrophobic because of the …
Ultraviolet light crosslinked graphene/multi-walled carbon …
So far, two general strategies for preparing polymer-based graphene electrothermal materials have been explored. One is based on CVD technique, in which graphene films first form on metal substrates and then are transferred to polymer film surfaces through etching process, rendering polymer-supported graphene electrothermal films [17, 20].This …
Effects of graphene on various properties and applications of …
Hence, Wang et al. introduced three kinds of rGO samples with different sizes (small-size reduced graphene oxide (SrGO), middle-size reduced graphene oxide (MrGO), and large-size reduced graphene oxide (LrGO)) into SR matrix to prepare varied nanocomposites, and further studied the influence of different sizes of rGO on the mechanical properties, tensile …
Efficient multi-component PL emission tunning in single emissive …
The broad peaks attributed to the nanoscale size of the synthesized af-GQDs with few layers of graphene [34]. For af-GQDs, the lattice distance is determined to be 0.32 nm, which is near to the graphene bulk distance (0.334nm). The fact that oxygen-containing groups between graphene layers are partially eliminated following amino functionalization.
Conductive, self-cleaning, and short-circuit proof multi-functional ...
This work reports the superior properties of flexible multi-functional composite fibers based on graphene aerogel fibers. With the addition of phase change materials, the graphene aerogel fibers were synthesized by wet spinning and supercritical drying. The phase change materials can improve the structural uniformity and thermal stability of the composite …
Carbon nanotube-graphene hybrids for soft electronics, sensors, …
Soft devices that are mechanically flexible and stretchable are considered as the building blocks for various applications ranging from wearable devices to robotics. Among the many candidate materials for constructing soft devices, carbon nanomaterials such as carbon nanotubes (CNTs) and graphene have been actively investigated owing to their outstanding …
Multi-optimized flexible graphene oxide/multi-walled carbon …
The imbalance between electromagnetic loss and impedance matching due to imperfect regulation of the components and structure is the main reason why it is difficult to obtain high-performance electromagnetic wave (EMW) absorption materials. Moreover, the wide, stable, and convenient use of high-performance absorber is the ultimate goal of EMW absorbing …
The effect of carbon nanotubes and graphene on the mechanical ...
A multi-scale modeling approach also revealed that low contents of graphene platelets improved the Young''s modulus of the nano-composites significantly more than CNTs [22]. Pang et al. studied the effects of the nanotubes or graphene structures on the non-isothermal crystallization of the ethylene–vinyl acetate at 5 wt.% loading [23]. It ...
Bioinspired structural color particles with multi-layer graphene …
In conclusion, we have reported a kind of bioinspired SCPs generated from the multi-layer PDA and GO encapsulated SNs, which were capable for complicated multiplexed bioassays. The elementary multi-layer nanoparticles were formed through coating the silica nanocores with GO layers supporting by PDA''s super-adhesivity.
Graphene Properties, Synthesis and Applications: A Review
In 2004, Geim et al. synthesized a stable monolayer of graphene through mechanical stripping. Geim and Novoselov were awarded the Nobel Prize in Physics in 2010 for their successful experiments, and, subsequently, graphene became one of the world''s most studied two-dimensional materials. 1 Graphene is a single atomic layer of carbon atoms …
Multi-layer and multi-component intercalation at the graphene…
In this work, we present a scanning tunneling microscopy (STM) study of iron- and cobalt-intercalated graphene/Ir(111) systems. In both cases, the intercalation leads to well-defined epitaxial layers and the intercalated areas are characterized by a moiré pattern, which adopts the same symmetry and periodicity as the graphene/Ir(111) moiré [24]. ...
Disordered 3 D Multi‐layer Graphene Anode Material from CO2 …
multi-layer graphene (A) and laminated electrode (B). TEM image of a discharged disordered multi-layer graphene electrode (inset: a zoomed in view) (C). HRTEM images of as-prepared disordered multi-layer graphene (D) and electrode cycled and stopped at discharged (sodiated) state (E). Raman spectroscopy was employed to investigate the ...
Graphene properties and applications in nanoelectronic
Reduction in the dimensions of silicon based devices has produced extraordinary developments in the performance of electronic systems. Recently, the advantages and challenges that caused by silicon devices shrinking have been investigated in many studies. Most of them have concluded that silicon technology is coming to an end and new innovations …
Convert waste petroleum coke to multi-heteroatom self-doped graphene ...
Graphene is being suggested as a replacement for activated carbon in energy storage devices ranging from supercapacitors to batteries. The generation of multi-heteroatom self-doped graphene structure from waste materials will be an efficient way to meet the energy requirements with its productive applications in energy devices. Here, we present a novel, high …