Highlights

Background: The tetrahedral coordination of Fe surrounded by 4 Se(Te) atoms is of crucial importance for the new high TC Fe pnictides superconductors with lattice parameters c and a. To reveal the essential aspects of the tetrahedron, one needs to vary the lattice parameter c and a in opposite manner, without altering the electronic

A weeklong materials science workshop series with morning lectures followed by hands-on lab exercises to reinforce concepts for introduction of materials-related content into core science curricula at the home institution Organized and taught by MRSEC faculty investigators Partnership with the Faculty Resource Network at NYU, held during the FRN Network Summer program Content Holographic Video Microscopy Crystals and Light How Stuff Packs Color

Graphene in its pristine form is one of the strongest materials, but defects influence its strenth.  Using atomistic calculations, we find that, counter to standard reasoning, graphene sheets with large-angle tilt boundaries that have a high density of defects are as strong as the pristine material and unexpectedly are much stronger than those with low-angle boundaries having fewer defects.  We show that this trend is not explained by continuum fracture models but can be understood by considering the critical bonds in the strained seven-membered carbon rings that lead to failure; the large-

Replacing steel with lightweight Aluminum alloys could significantly improve fuel economy of vehicles.  Existing lightweight alloys are difficult to use, because they have poor ductility, and tend to tear while they are stamped to form a complex part.  Adding small quantities of additional allying elements to lightweight alloys could improve their ductility.  But at present the only way to identify the correct elements is to make, and test, many possible combinations - an impossible task.

Doping semiconductor nanocrystals with transition metals is an efficient route to tune emission color over a broad range of wavelengths. We have developed a simple and environmentally friendly process for protein-aided mineralization of transition metal doped ZnS nanocrystals. Biofabricated ZnS:Mn quantum dots (QDs)

  Interacting electron ripples provide clues to superconductivity A theoretical prediction is confirmed by atomic-scale microscopy

 The ability of an organic molecular solid to crystallize into different structures is  a phenomenon known as polymorphism.  Polymorphism is an issue of major concern in the pharmaceutical industry.  In many drug compounds, some fraction of the crystal structures that can be formed cause the drug to lose its therapeutic function.  If these structures are not known at the time of the drug’s release onto the market,

Transition-metal oxides (TMO), such as molybdenum tri-oxide (MoO3), are promising hole-injection electrode materials for organic electronics because of their large work function and high conductivity. They are superior to the widely used organic polymer PEDOT:PSS which causes device degradation. However, deposition of MoO3 layers from high-temperature sources is problematical for flexible organic-based electronics.

Device characteristics under dark and illumination