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← ScienceWhich consequence results when a scanning tunneling microscope probe increases electron confinement?
A)Increased tunneling current exponentially amplifies✓
B)Resolution decreases due to diffraction limits
C)Thermal noise overwhelms tunneling signal
D)Tip damage occurs from field emission
💡 Explanation
Increased electron confinement in the tunneling junction causes amplified tunneling current via the principle of **quantum tunneling**, because spatial constraints reduce the potential barrier width. Therefore, tunneling probability exponentionally grows with confinement; rather than causing a loss of STM image resolution from diffraction.
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