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Application of Trasmission Electron Detection to Scalpel Mask Metrology



R Farrow, Michael T. Postek, William J. Keery, Samuel N. Jones, J R. Lowney, M Blakey, L Fetter, A Liddle, L C. Hopkins, H A. Huggins, M Peabody, A Novembre, J Griffith


Linewidth measurements were performed on a 4X scattering with angular limitation in projection electron lithography (SCALPEL) e-beam lithography mask using the transmitted electron signal in a modified scanning electron microscope. Features as small as 0.24 m were measured on the mask. The thin membrane mask structure that was used is found to provide sufficient transmitted signal contrast at energies ranging from 10 to 30 keV. The linewidth measurement accuracy is mostly limited by the variations in the material and not the measurement system. It is concluded that the linewidth measurement technique using transmitted electrons is suitable for the potential certification of SCALPEL mask standards.
Journal of Vacuum Science and Technology
No. 6


electron scattering, electrons, linewidth measurement, SCALPEL mask linewidth standards, SCALPEL mask metrology, transmission electron detection


Farrow, R. , Postek, M. , Keery, W. , Jones, S. , Lowney, J. , Blakey, M. , Fetter, L. , Liddle, A. , Hopkins, L. , Huggins, H. , Peabody, M. , Novembre, A. and Griffith, J. (1997), Application of Trasmission Electron Detection to Scalpel Mask Metrology, Journal of Vacuum Science and Technology (Accessed July 13, 2024)


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Created October 31, 1997, Updated October 12, 2021