Towards better 3-D reconstructions by combining electron tomography and atom-probe tomography.

Scanning transmission electron microscope tomography and atom-probe tomography are both three-dimensional techniques on the nanoscale. We demonstrate here the combination of the techniques by analyzing the very same volume of an Al-Ag alloy specimen. This comparison allows us to directly visualize the theoretically known artifacts of each technique experimentally, providing insight into the optimal parameters to use for reconstructions and assessing the quality of each reconstruction. The combination of the techniques for accurate morphology and compositional information in three dimensions at the nanoscale provides a route for a new level of materials characterization and understanding.

[1]  J. Walls,et al.  The shape of field-ion emitters , 1979 .

[2]  Michael K Miller,et al.  Local magnification effects in the atom probe , 1990 .

[3]  C. Kübel,et al.  Recent Advances in Electron Tomography: TEM and HAADF-STEM Tomography for Materials Science and Semiconductor Applications , 2005, Microscopy and Microanalysis.

[4]  A V Crewe,et al.  Visibility of Single Atoms , 1970, Science.

[5]  Tien T. Tsong,et al.  Field ion image formation , 1978 .

[6]  P. Midgley,et al.  Embedded Nanostructures Revealed in Three Dimensions , 2005, Science.

[7]  M. Radermacher,et al.  Three-dimensional reconstruction of single particles from random and nonrandom tilt series. , 1988, Journal of electron microscopy technique.

[8]  D. DeRosier,et al.  The reconstruction of a three-dimensional structure from projections and its application to electron microscopy , 1970, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[9]  P. Midgley,et al.  Reducing the missing wedge: High-resolution dual axis tomography of inorganic materials. , 2006, Ultramicroscopy.

[10]  J Frank,et al.  Ultrastructure of chromatin. II. Three-dimensional reconstruction of isolated fibers. , 1991, Journal of cell science.

[11]  A V Crewe,et al.  A scanning microscope with 5 A resolution. , 1970, Journal of molecular biology.

[12]  Michael K Miller,et al.  Atom Probe Field Ion Microscopy , 1996 .

[13]  Jason Schneir,et al.  Spatial Distribution Maps for Atom Probe Tomography , 2007, Microscopy and Microanalysis.

[14]  Nigel D. Browning,et al.  Practical aspects of atomic resolution imaging and analysis in STEM , 1999 .

[15]  U. Skoglund,et al.  Three-dimensional structure of a specific pre-messenger RNP particle established by electron microscope tomography , 1986, Nature.

[16]  L. A. Boatner,et al.  Chemically sensitive structure-imaging with a scanning transmission electron microscope , 1988, Nature.

[17]  P. Gilbert Iterative methods for the three-dimensional reconstruction of an object from projections. , 1972, Journal of theoretical biology.

[18]  E. Marquis A Reassessment of the Metastable Miscibility Gap in Al-Ag Alloys by Atom Probe Tomography , 2007, Microscopy and Microanalysis.

[19]  A. Sali,et al.  The molecular sociology of the cell , 2007, Nature.

[20]  Michael K Miller,et al.  Invited review article: Atom probe tomography. , 2007, The Review of scientific instruments.

[21]  H. Jinnai,et al.  Transmission electron microtomography without the "missing wedge" for quantitative structural analysis. , 2007, Ultramicroscopy.

[22]  P. Midgley,et al.  3D electron microscopy in the physical sciences: the development of Z-contrast and EFTEM tomography. , 2003, Ultramicroscopy.