Virtual Labs

Which of the following best describes the process of WBDF imaging in TEM?

a: Using the direct beam to form the image Explanation

Explanation

b: Aligning the electron beam with a zone axis Explanation

Explanation

c: Selecting a diffracted beam slightly off the Bragg condition to highlight defects Explanation

Explanation

d: Blocking all beams except for the scattered electrons Explanation

Explanation

What is the primary contrast mechanism in HAADF-TEM?

a: Electron absorption Explanation

Explanation

b: Electron diffraction Explanation

Explanation

c: Atomic number (Z) contrast Explanation

Explanation

d: Phase contrast Explanation

Explanation

Interpretation of the Selected Area Diffraction Pattern