Imperfections in the regular atomic arrangements in crystals determine many of the properties of a material, and their diffusion is behind many microstructural changes in solids. However, imaging ...

Scientists have created a new structure by encapsulating a single layer of fullerene molecules between two graphene sheets. Buckyball sandwiches combine fullerenes and graphene. This structure allows ...

Cyclic polymers are attractive as counterparts to linear polymers from the viewpoint of both polymer chemistry and polymer physics. Many efforts have been made to ...

Illustration of surface diffusion of atoms, with the blue arrows showing quantum-tunneling diffusion (through classical barriers) and the black arrow showing thermal hopping. The figure shows how the ...

In CdS nanocrystals, photoexcited holes rapidly become trapped at the particle surface. The dynamics of these trapped holes have profound consequences for the photophysics and photochemistry of these ...

The basic principles of diffusion MRI (dMRI) were introduced in the mid-1980s. This method is deeply rooted in the concept that, during their diffusion-driven displacements, molecules probe tissue ...

Carbon is one of the most versatile elements: it forms the basis for an enormous number of chemical compounds, it has several allotropes of different dimensionality, and it exhibits many different ...