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Which consequence results when the transmission coefficient drops drastically in a scanning tunneling microscope (STM)?

A)Image blurs severely during scanning
B)Tip-surface adhesion increases quickly
C)Vibrational modes average over data
D)Piezo drift affects fast-scan resolution

💡 Explanation

Severe image blurring occurs because quantum tunneling determines the current flow, and exponentially depends on probe-sample spacing. Therefore, reducing the transmission coefficient means fewer electrons tunnel, drastically lowering resolution, rather than mechanical or bias-dependent effects.

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