Calculating STM Resolution Based on Tip Size

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The resolution of a Scanning Tunneling Microscope (STM) is closely related to the size of its tip, which is typically a single protruding molecule. Under ideal conditions, this allows the STM to detect the positions of individual molecules. The discussion suggests that the ratio of resolution to tip size is approximately 1:1. Participants are seeking formulas or links to better understand this relationship. Accurate calculations are essential for optimizing STM performance in molecular imaging.
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does anyone have a link or a formula for calculating the resolution of a STM based on the tip size.
 
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According to this link and a couple others, the tip of a STM is a single protruding molecule and, under ideal conditions, can record the possition of individual molecules.

So I geuss the ratio of resolution to tip size is about 1/1.
 
Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

Thread 'Unexpected irregular reflection signal from a high-finesse cavity'

I am observing an irregular, aperiodic noise pattern in the reflection signal of a high-finesse optical cavity (finesse ≈ 20,000). The cavity is normally operated using a standard Pound–Drever–Hall (PDH) locking configuration, where an EOM provides phase modulation. The signals shown in the attached figures were recorded with the modulation turned off. Under these conditions, when scanning the laser frequency across a cavity resonance, I expected to observe a simple reflection dip. Instead...
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