Crystal structure imperfections in solids often act as efficient carrier trapping centres, which, when suitably isolated, act as sources of single photon emission. The best known examples of such attractive imperfections are well-width or composition fluctuations in semiconductor heterostructures (resulting in the formation of quantum dots) and coloured centres in wide-bandgap materials such as...

Two-dimensional-layered transition metal dichalcogenides nanosheets have attracted tremendous attention for their promising applications in spintronics because the atomic-thick nanosheets can not only enhance the intrinsic properties of their bulk counterparts, but also give birth to new promising properties. In this paper, ultrathin tungsten disulfide (WS2) nanosheets were gotten by liquid exf...

Two commercial vermiculites from China and Libby were treated with different alcohols (methanol, ethanol, propanol butanol) at room temperature for up to one month afterwards irradiated microwaves. The exfoliated non-exfoliated particles characterized by X-ray diffraction, high-resolution transmission microscopy, thermal gravimetric analyses infrared spectroscopy explain the inconsistencies in ...

The fabrication of electrically conductive hydrogels is challenging as the introduction an filler often changes mechanical hydrogel matrix properties. Here, we present approach for preparation composites with outstanding electrical conductivity at extremely low loadings (0.34 S m–1, 0.16 vol %). Exfoliated graphene and polyacrylamide are microengineered to 3D such that pathways pervade similar ...

BJH analysis is shown to be a highly useful method estimate the distance between stacks within plasma-exfoliated graphitic material, and coincide with data obtained from SEM, AFM XRD analysis.

Many solution processing methods of exfoliation of layered materials have been studied during the last few years; most of them are based on organic solvents or rely on surfactants and other funtionalization agents. Pure water should be an ideal solvent, however, it is generally believed, based on solubility theories that stable dispersions of water could not be achieved and systematic studies a...

Abstract Atomic scale crystallographic structures of a quantum crystals depend on substrate, interfacial strain, defects, surface functionalities etc., which make it challenging to precisely control. To achieve high quality material, UHV conditions are prerequisite, makes costly. Naturally occurring 2D materials have tremendous significance in this regard. White lead, having weak interlayer cou...

objective: the exfoliated human deciduous tooth (shed) contain multipotent stem cells that identified to be a population of highly proliferative and clonogenic .these cells are capable of differentiating into a variety of cell types including neural cells, adipocytes, and odontoblasts. material and methods: normal exfoliated human deciduous incisors collected from six- to nine-years-old childre...