Question

Which property refers to the inability to repeat recorded data when scanning from different directions?

• A. Reproducibility
• B. Hysteresis
• C. Directional anisotropy
• D. Noise interference

Hint:

Measurement difference during forward and reverse scans → {Hysteresis}

Answer 1

The Correct Option is B

Concept:
In nanoscale measurement techniques such as Scanning Probe Microscopy (SPM) or Atomic Force Microscopy (AFM), certain physical effects can cause the measured signal to depend on the direction in which the probe scans the surface.
Step 1:Understanding hysteresis.
Hysteresis refers to the phenomenon where the response of a system depends on its previous history. In scanning systems, this means the output signal may vary depending on whether the probe scans forward or backward.
Step 2:Effect on recorded data.
Because of hysteresis in piezoelectric scanners or other system components, the recorded data may not be identical when scanning the same region from opposite directions.
Step 3:Impact in nanoscale measurements.
This leads to the inability to reproduce identical data when scanning from different directions, which is a characteristic symptom of hysteresis effects in measurement systems. Conclusion:
Therefore, the property describing the inability to repeat recorded data when scanning from different directions is hysteresis.