Individual quantum dots imaged in 3-D for first time

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Researchers have developed an imaging technique that uses a tiny, super sharp needle to nudge a single nanoparticle into different orientations and capture 2-D images to help reconstruct a 3-D picture. The method demonstrates imaging of individual nanoparticles at different orientations while in a laser-induced excited state.
via Science Daily

Sleuths find metal in 'metal-free' catalysts

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Scientists find the metal in supposedly 'metal-free' graphene catalysts for oxygen reduction reactions that turn chemical energy into electrical energy. The discovery could allow for better tuning of two-dimensional materials for fuel cells and other applications.
via Science Daily