Method and apparatus for measuring physical properties of...

Radiant energy – Inspection of solids or liquids by charged particles – Electron microscope type

Reexamination Certificate

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C250S310000

Reexamination Certificate

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07022988

ABSTRACT:
A method and apparatus for measuring the physical properties of a micro region measures the two-dimensional distribution of stress/strain in real time at high resolution and sensitivity and with a high level of measuring position matching. A sample is scanned and irradiated with a finely focused electron beam (23, 26), and the displacement of position of a diffraction spot (32, 33) is measured by a two-dimensional position-sensitive electron detector (13). The displacement amount is outputted as a voltage value that is then converted into the magnitude of the stress/strain according to the principle of a nano diffraction method, and the magnitude is displayed in synchronism with a sample position signal.

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Kimoto, et al; “ Measurement of Strain in Locally Oxidized Silicon Using Convergent-Beam Electron Diffraction.” Jpn. J. Appl. Phys. vol. 32, Part 2, No. 2A, L211-213, Feb. 1, 1993.

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