Submission + - Breakthrough in imaging 3D chemistry at nanometer resolution (phys.org) 1
Hovden writes: A recent leap in our ability to see the chemistry of matter in three-dimensions at the nanoscale was achieved, allowing scientists to understand how nanomaterials are chemically arranged. Measuring the 3D distribution of chemistry at the nanoscale is a longstanding challenge for metrological science. Traditionally, seeing matter at the smallest sizes requires too many high-energy electrons for 3D chemical imaging. The high beam exposure that destroys the specimen before an experiment is completed. Even larger doses are required to achieve high resolution. Thus, chemical mapping in 3D has been unachievable except at lower resolution with the most radiation-hard materials.
High-resolution 3D chemical imaging is now achievable near or below one-nanometer resolution by a team from Dow Chemical and the University of Michigan. Using a newly introduced method, called multi-modal data fusion, high-resolution chemical tomography provides 99% less dose by linking information encoded within both elastic and inelastic scattered signals. The researches show sub-nanometer 3D resolution of chemistry is measurable for a broad class of geometrically and compositionally complex materials.
High-resolution 3D chemical imaging is now achievable near or below one-nanometer resolution by a team from Dow Chemical and the University of Michigan. Using a newly introduced method, called multi-modal data fusion, high-resolution chemical tomography provides 99% less dose by linking information encoded within both elastic and inelastic scattered signals. The researches show sub-nanometer 3D resolution of chemistry is measurable for a broad class of geometrically and compositionally complex materials.
