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Program Highlights for year 2012

Soft Spots in Disordered Colloidal Packings

Like liquids, solids can flow under applied shear stresses.  In crystalline solids, figuring out vulnerable regions where the material will break under stress is well-established—they are typically controlled by a population of defects in the crystal structure known as dislocations.  In disordered solids, however, defects are everywhere, making the task

NSF-Nanoelectronics Research Initiative

Generating, Probing and Manipulating Excitons in Carbon-based Nanomaterials


Collaboration with Public Institutions: Art Conservation

The Art Institute of Chicago:Science of Art Conservation

Imaging 'Invisible' Dopant Atoms in Semiconductor Nanocrystals

In semiconductor nanocrystals, the physical effects of deliberately included impurities, called dopants, may depend on the dopant position with the crystal. 

Why Most Plastics Can't be Metals

Conductive polymers, i.e. plastics, that conduct electricity, are important in science and technology as they offer the potential for cheap, flexible electronic devices.

High Efficiency Silicon Nanocrystal Light Emitting Devices

Hybrid light-emitting devices based on organic semiconductors and inorganic semiconductor nanocrystals are of great interest for applications in optical displays and solid-state light sources.

Patterned Graphene "Scrap" Grows into Continuous "Patchwork Quilt"


New technique produces heterojunctions in single-atom-thick graphene