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He is twice in the Guinness World Records, most recently, for achieving the highest resolution microscope image ever recorded using electron ptychography. [3] His work spans theory, computation, and experimental physics research. He is also a Faculty member of the Center for Bright Beams. [4]
By 1978, the first theoretical ideas had been developed to break the Abbe limit, which called for using a 4Pi microscope as a confocal laser-scanning fluorescence microscope where the light is focused from all sides to a common focus that is used to scan the object by 'point-by-point' excitation combined with 'point-by-point' detection. [14]
In 1998, working with Stephen Pennycook of ORNL, he recorded "the highest resolution microscope images ever made of crystal structures". [ 9 ] [ 10 ] Six years later, Nellist, Pennycook, and colleagues at ORNL produced the first images of atoms in a crystal on sub-Angstrom scales by using a new technique to correct the optical aberrations in a ...
Nion's 2004 Science article [3] demonstrated 0.78 Å resolution and led to wide acceptance of aberration correction as the best way to achieve high spatial resolution in electron microscopy. It soon became clear that a new, higher stability electron microscope was needed, built from the ground up so that resolutions of 0.5 Ångstroms and bellow ...
High-resolution transmission electron microscopy is an imaging mode of specialized transmission electron microscopes that allows for direct imaging of the atomic structure of samples. [ 1 ] [ 2 ] It is a powerful tool to study properties of materials on the atomic scale, such as semiconductors, metals, nanoparticles and sp 2 -bonded carbon (e.g ...
On December 24, Parker Solar Probe will come within 3.86 million miles (6.2 million kilometers) of the solar surface, closer than any human-made object to the sun.
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