Focus-variation image reconstruction in field-emission TEM

W.M.J. Coene; A.J.E.M. Janssen; M. Op de Beeck; D. Van Dyck; E.J. Van Zwet; H.W. Zandbergen

Focus-variation image reconstruction in field-emission TEM

W.M.J. Coene, A.J.E.M. Janssen, M. Op de Beeck, D. Van Dyck, E.J. Van Zwet, H.W. Zandbergen

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Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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The use of a field emission gun (FEG) in high resolution TEM (HRTEM) improves the information limit much below the point resolution. In the area between point and information resolution of the FEG-TEM, image interpretation is complicated by the lens aberrations and focus effects. Different reconstruction algorithms can be used depending on the assumptions that are made in the HRTEM imaging model. First, the 'paraboloid method' (PAM) aims at filtering out recursively the nonlinear contributions in the images. Second, the 'maximum-likelihood' (MAL) where the electron wave at the object's exit plane (object wave) is matched to the measured intensities in the HRTEM images by minimizing a least squares functional, using the steepest descent approach.

Originele taal-2	Engels
Titel	Proceedings of the 51st Annual Meeting Microscopy Society of America, 1 - 6 August 1993, Cincinnati, Ohio
Redacteuren	G.W. Bailey, C.L. Rieder
Plaats van productie	San Francisco
Uitgeverij	San Francisco Press
Pagina's	1070-1071
Status	Gepubliceerd - 1993

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@inproceedings{b424d9ee70254ba499caebd6a124d906,

title = "Focus-variation image reconstruction in field-emission TEM",

abstract = "The use of a field emission gun (FEG) in high resolution TEM (HRTEM) improves the information limit much below the point resolution. In the area between point and information resolution of the FEG-TEM, image interpretation is complicated by the lens aberrations and focus effects. Different reconstruction algorithms can be used depending on the assumptions that are made in the HRTEM imaging model. First, the 'paraboloid method' (PAM) aims at filtering out recursively the nonlinear contributions in the images. Second, the 'maximum-likelihood' (MAL) where the electron wave at the object's exit plane (object wave) is matched to the measured intensities in the HRTEM images by minimizing a least squares functional, using the steepest descent approach.",

author = "W.M.J. Coene and A.J.E.M. Janssen and {Op de Beeck}, M. and {Van Dyck}, D. and {Van Zwet}, E.J. and H.W. Zandbergen",

year = "1993",

language = "English",

pages = "1070--1071",

editor = "G.W. Bailey and C.L. Rieder",

booktitle = "Proceedings of the 51st Annual Meeting Microscopy Society of America, 1 - 6 August 1993, Cincinnati, Ohio",

publisher = "San Francisco Press",

}

Focus-variation image reconstruction in field-emission TEM. / Coene, W.M.J.; Janssen, A.J.E.M.; Op de Beeck, M. et al.
Proceedings of the 51st Annual Meeting Microscopy Society of America, 1 - 6 August 1993, Cincinnati, Ohio. uitgave / G.W. Bailey; C.L. Rieder. San Francisco: San Francisco Press, 1993. blz. 1070-1071.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

TY - GEN

T1 - Focus-variation image reconstruction in field-emission TEM

AU - Coene, W.M.J.

AU - Janssen, A.J.E.M.

AU - Op de Beeck, M.

AU - Van Dyck, D.

AU - Van Zwet, E.J.

AU - Zandbergen, H.W.

PY - 1993

Y1 - 1993

N2 - The use of a field emission gun (FEG) in high resolution TEM (HRTEM) improves the information limit much below the point resolution. In the area between point and information resolution of the FEG-TEM, image interpretation is complicated by the lens aberrations and focus effects. Different reconstruction algorithms can be used depending on the assumptions that are made in the HRTEM imaging model. First, the 'paraboloid method' (PAM) aims at filtering out recursively the nonlinear contributions in the images. Second, the 'maximum-likelihood' (MAL) where the electron wave at the object's exit plane (object wave) is matched to the measured intensities in the HRTEM images by minimizing a least squares functional, using the steepest descent approach.

AB - The use of a field emission gun (FEG) in high resolution TEM (HRTEM) improves the information limit much below the point resolution. In the area between point and information resolution of the FEG-TEM, image interpretation is complicated by the lens aberrations and focus effects. Different reconstruction algorithms can be used depending on the assumptions that are made in the HRTEM imaging model. First, the 'paraboloid method' (PAM) aims at filtering out recursively the nonlinear contributions in the images. Second, the 'maximum-likelihood' (MAL) where the electron wave at the object's exit plane (object wave) is matched to the measured intensities in the HRTEM images by minimizing a least squares functional, using the steepest descent approach.

M3 - Conference contribution

SP - 1070

EP - 1071

BT - Proceedings of the 51st Annual Meeting Microscopy Society of America, 1 - 6 August 1993, Cincinnati, Ohio

A2 - Bailey, G.W.

A2 - Rieder, C.L.

PB - San Francisco Press

CY - San Francisco

ER -

Focus-variation image reconstruction in field-emission TEM

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