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Color map (left) reconstructed image showing the direction of magnetization and the stray magnetic fields in and around a cobalt nanospiral (color wheel indicates magnetization direction) that is only 20 nm in diameter (images taken using high resolution Lorentz microscopy), and (right) tomographic reconstruction showing the 3D shape of the nano-spiral.June 2014Science Highlights

Magnetic Structure of Sculpted Nanospirals

Direct visualization of magnetic structures gives researchers a window into new possibilities at the Nanoscale. Read More »

Comparing the performance of palladium clusters of different sizes for water oxidation; (inset) calculated structure of the Pd6O6 cluster (red = oxygen, grey = palladium), a catalytic site for the reaction.June 2014Science Highlights

Palladium Cluster Size Matters

Groups of Palladium atoms found to have major effects on electrocatalyst performance. Read More »

Local regions of gel shrink when exposed to light through a photomask apeture.June 2014Science Highlights

Morphing Polymer Shape and Motion with Light

Computational modelling shows how the shape and motion in a polymer gel can be controlled solely by light. Read More »

Control of the synthesis results in a diversity of self-assembled structures formed by sticky colloidal particles:  array of “mushrooms” (left), wavy colloidal “fur”, dense fiber network, and three-dimensional reconstruction of the network (right).June 2014Science Highlights

Growing Nano “Hair” for Electrodes - From the Bottom Up

Electric fields control growth of “sticky” polymer particles. Read More »

Left: Fluorescent image of two polystyrene particles positioned at the north and south poles of a liquid crystal droplet. Right: Simulation of particle adsorption; region of disorder within droplets coincides exactly with the particle positions at the poles.June 2014Science Highlights

Cell-like Decoration of “Gooey” Surface

Precise, predictable positioning of nanoparticles on a liquid crystal droplet. Read More »

The color spectrum of light absorbed by a strongly-coupled perylene-tetrapyrrole dyad is more than the sum of the spectra of the constituents.June 2014Science Highlights

Capturing All the Light: Panchromatic Visible Absorption for Solar Photoconversion

Linking together two light absorbing pigments to construct a better artificial photosynthesis solar cell. Read More »

EPR spectra (A) with generated with isotope labeled tyrosines show that a tyrosine radical (B) is cleaved to form an oxobenzyl radical (C) as an intermediate in forming the CO and CN Fe ligands in FeFe hydrogenase.June 2014Science Highlights

Totally Radical: Unique Chemistry Needed to Make a Biological Hydrogen Catalyst

Key steps revealed in assembling the active site of a hydrogen-generating catalyst in bacteria. Read More »

Focal series high-resolution transmission-electron microscope (TEM) image (here, for disordered 1.2-1.5 nm NPs) and histogram for fraction of ordered NPs versus size, where NPs > 2.5 nm were all observed to be ordered.June 2014Science Highlights

Nanoparticles: To Be or Not to Be Crystalline?

Discovery of coexisting ordered and disordered catalytic nanoparticles. Read More »

Scanning Tunneling Microscope Image Showing Atomically Dispersed Palladium Atoms in a Copper Surface.June 2014Science Highlights

Isolated Palladium Atoms Allow Highly-Selective Catalysis of Hydrogenation Reactions

Single palladium atoms convert the surface of an inexpensive metal into an ultra-selective hydrogenation catalyst. Read More »

Sequentially deposited green, orange, and red-emitting quantum dots serve as sensitizers within the titanium oxide film to render a rainbow architecture for harvesting photons from sunlight.June 2014Science Highlights

Tuning Into the Right Wavelength: Quantum Dot Rainbow Increases Solar Cell Efficiency

Layers of quantum dots Form “rainbow architecture” that enhances light absorption in a solar cell. Read More »

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