CONTACT INFORMATION
| Phone: (216) 368-0611 |
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| Email: frank.ernst@case.edu |
Office:White Bldg. Room 414, 10900 Euclid Avenue, Cleveland, OH 44106-7204 |
EDUCATION
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Habilitation in Materials Science, University of Stuttgart, Germany
PhD in Physics / Physical Metallurgy, University of Göttingen, Germany
Masters in Physics, University of Göttingen, Germany |
ACTIVE RESEARCH
Structure, Defects, and Composition of Nanoparticles
Experimental determination of nanoparticle structures down to the atomistic length scale, characterization of structural defects, and analysis of the spatial distribution of atomic species. The goal is to understand the impact of structure, defects, and composition on nanoparticle properties, e.g. electronic and optical properties relevant to catalytic performance of fuel cell catalysts, nanoparticles for solar cells, etc. |
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Advanced Methods of Quantitative Atomic Resolution Imaging of Nanostructures
Development of experimental methods suitable for imaging and analyzing nanostructures down to the atomistic level. Emphasis is on extracting quantitative data on the coordinates and spatial distribution of the involved atomic species.
POTENTIAL IMPACT
The atomistic structure of nanoparticles, including aspects like structural defects, facetting, segregation of atomic species, or strain, has a profound impact on the performance of nanotechnology-based devices (e.g. in fuel cells or solar cells). Advancing experimental methods for high-spatial-resolution imaging and analysis of nanostructrures is of key importance for obtaining quantitative data on the atomistic structure and to develop processing routes that optimize the structure with regard to performance.
SELECTED PUBLICATIONS
F. Ernst and M. Ruhle: High-Resolution Imaging and Spectrometry of Materials. Springer Verlag, New York 2002.
K. Du and F. Ernst: Quantitative Assessment of Nanoparticle Size Distributions from HRTEM Images. International Journal of Materials Research (formerly Zeitschrift für Metallkunde), in press.
R. Adelung, W. Hartung, and F. Ernst: Fabrication of Cu-Induced Networks of Linear Nanostructures on Different Length Scales. Acta Materialia, vol. 50, pp. 4925–4933, 2002.
R. Adelung, F. Ernst, N. Zheng, U. Landau: In-situ Nanoscale Observation and Control of Electron-Beam-Induced Cluster Formation. Journal of Vacuum Science and Technology B, vol. 22, pp. 1797-1802, 2004.
FIELDS
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