CoSS: Created page with "== Citation == Hovden, R.; Ercius, P.; Jiang, Y.; Wang, D.; Yu, Y.; Abruña, H. D.; Elser, V. & Muller, D. A. Breaking the Crowther limit: Combining depth-sectioning and tilt..."

2014-04-14T13:56:47Z

Created page with "== Citation == Hovden, R.; Ercius, P.; Jiang, Y.; Wang, D.; Yu, Y.; Abruña, H. D.; Elser, V. & Muller, D. A. Breaking the Crowther limit: Combining depth-sectioning and tilt..."

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== Citation ==

Hovden, R.; Ercius, P.; Jiang, Y.; Wang, D.; Yu, Y.; Abruña, H. D.; Elser, V. & Muller, D. A. Breaking the Crowther limit: Combining depth-sectioning and tilt tomography for high-resolution, wide-field 3D reconstructions. Ultramicroscopy, 2014, 140, 26-31

== Abstract ==

To date, high-resolution (<1 nm) imaging of extended objects in three-dimensions (3D) has not been possible. A restriction known as the Crowther criterion forces a tradeoff between object size and resolution for 3D reconstructions by tomography. Further, the sub-Angstrom resolution of aberration-corrected electron microscopes is accompanied by a greatly diminished depth of field, causing regions of larger specimens (>6 nm) to appear blurred or missing. Here we demonstrate a three-dimensional imaging method that overcomes both these limits by combining through-focal depth sectioning and traditional tilt-series tomography to reconstruct extended objects, with high-resolution, in all three dimensions. The large convergence angle in aberration corrected instruments now becomes a benefit and not a hindrance to higher quality reconstructions. A through-focal reconstruction over a 390 nm 3D carbon support containing over 100 dealloyed and nanoporous PtCu catalyst particles revealed with sub-nanometer detail the extensive and connected interior pore structure that is created by the dealloying instability.

== Keywords ==

== Links ==

http://www.sciencedirect.com/science/article/pii/S0304399114000230

== Related software ==

== Related methods ==

== Comments ==

2014Hovden TiltFocus - Revision history

CoSS: Created page with "== Citation == Hovden, R.; Ercius, P.; Jiang, Y.; Wang, D.; Yu, Y.; Abruña, H. D.; Elser, V. & Muller, D. A. Breaking the Crowther limit: Combining depth-sectioning and tilt..."