2026-09-18T20:16:23Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/19532 2023-07-10 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

Gibson, J. Murray Zheng, Tong 2011-05-07T12:10:26Z 2011-05-07T12:10:26Z 10000-01-01 1995 High resolution transmission electron microscopy (HRTEM) has been extensively used as a structure characterization technique in materials and biological science. In the past, qualitative use of HRTEM has been primarily employed. This thesis explores the use of HRTEM as a quantitative tool, which should have great impact on the atomic level analysis of numerous materials science problems, such as interface interdiffusion in heterostructures. In order to implement quantitative HRTEM, a clear understanding of the electron imaging and scattering theories is necessary. Moreover, several issues which directly relate to the success of high resolution electron microscopy work, such as the characteristics of a microscope and the specimen preparation, will be addressed. As an example, the application of HRTEM to a materials science problem will be demonstrated. Through this study, limitations of the qualitative HRTEM will be manifested and the quantitative HRTEM based on a non-linear least-square method will follow. This quantitative method allows determination of the imaging parameters and hence, the quantitative structure and chemical analysis can then be carried on. However, the inadequacy of the existing theory in quantitative matching of experimental images will be demonstrated, and further theoretical developments are required to implement the method. Made available in DSpace on 2011-05-07T12:10:26Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9624551.pdf: 6811052 bytes, checksum: e247eed59173cde54258899d93e45441 (MD5) Previous issue date: 1995 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:37:40Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:15:31-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9624551 (UMI)AAI9624551 http://hdl.handle.net/2142/19532 eng Copyright 1995 Zheng, Tong Physics, Condensed Matter Physics, Optics Engineering, Materials Science Quantitative high resolution transmission electron microscopy text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.