JULY-AUGUST 2011 | VOLUME 14 | NUMBER 7-8 308 Graphene is a one-atom-thick material consisting of sp2-bonded carbon with a honeycomb structure. It resembles a large polyaromatic molecule of semi-infinite size1, 2. In the past five years, graphene-based nanomaterials have been the focus of a vast amount of attention. The interesting and exciting properties of single-layer graphene sheets, such a...

Carbon nanostructures have played an important role in creating a new field of materials based on carbon. Chemical modification of carbon nanostructures through grafting has been a successful step to improve dispersion and compatibility in solvents, with biomolecules and polymers to form nanocomposites. In this sense carbohydrates such as chitosan are extremely valuable because their functional...

Ring oscillators (ROs) are the most important class of circuits used to evaluate the performance limits of any digital technology. However, ROs based on low-dimensional nanomaterials (e.g., 1-D nanotubes, nanowires, 2-D MoS2) have so far exhibited limited performance due to low current drive or large parasitics. Here we demonstrate integrated ROs fabricated from wafer-scale graphene grown by ch...

Magnetic graphene-based composite nanomaterials were developed to capture benzo( a )pyrene from water media. The synthesized couple very easy magnetic separation after adsorption with highly efficient removal of ∼99.9%.

Recently, graphene oxide (GO), one of the carbon nanomaterials, has received much attention due to its unique physical and chemical properties and high potential in many research areas, including applications as a biosensor and drug delivery vehicle. Various GO-based biosensors have been developed, largely based on its surface adsorption properties for detecting biomolecules, such as nucleotide...

With wider use of graphene-based materials and other two-dimensional (2 D) in various fields, including electronics, composites, biomedicine, etc., 2 D can trigger undesired effects at cellular, tissue organ level. Macrophages be found many organs. They are one the most important cells immune system they relevant study nanomaterials as phagocytose them. Nanomaterials have multi-faceted on phago...

Recently, graphene-based nanomaterials, in the form of two dimensional substrates or three dimensional foams, have attracted considerable attention as bioactive scaffolds to promote the differentiation of various stem cells towards specific lineages. On the other hand, the potential advantages of using graphene-based hybrid composites directly as factors inducing cellular differentiation as wel...

Carbon nanomaterials (CNMs) are increasingly employed in nanomedicine as carriers for intracellular transport of drugs, imaging probes, and therapeutics agents, thanks to their unique optical and physicochemical properties. However, a better understanding about the effects of CNMs on a vertebrate model at the whole animal level is required. In this study, we compare the toxicity of oxidized car...