Seeing more deeply into nanomaterials: New 3D imaging tool achieves highest resolution yet sciencemagazine
An artist's impression of how the researchers used x-ray tomography as a magnifying lens to see into the inner structure of nanomaterials. Credit: Brookhaven National Laboratory
As a DOE Office of Science user facility, the CFN offers a wide range of tools for creating and investigating novel nanomaterials. It was at the labs of the CFN and at Columbia Engineering where Gang and his team first built and studied new nanostructures. Using both DNA-based assembly as a new fabrication tool at the nanoscale and precise templating with inorganic materials that can coat DNA and nanoparticles, the researchers were able to demonstrate a novel type of complex 3D architecture.
"At NSLS-II, we have many tools that can be used to learn more about a material depending on what you are interested in. What made HXN interesting for Oleg and his work was that you can see the actual spatial relationships between objects within the structure at the nanoscale.
The team leveraged the beamline's abilities in two ways. They not only measured the phase contrast of the X-rays passing through the samples, but they also collected the X-ray fluorescence—the emitted light—from the sample. By measuring the phase contrast, the researchers could better distinguish the foreground from the background of their sample.
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