Nature of the “breaking” event in EAOGe-C2I molecular imagers during inverted-mode STM

Ascertain the physical or chemical change that occurs to EAOGe-C2I molecular imagers on Si(100)-2x1 samples during scanning or mechanosynthetic poke sequences when the reflected-probe image abruptly degrades or disappears, and classify the failure modes responsible for this "breaking" behavior.

Background

The authors report that some EAOGe-C2I molecules can abruptly lose imaging capability during scanning or interaction sequences, referring to this event as "breaking" but without definitive identification of the underlying transformation. This complicates mechanosynthetic procedures and data interpretation because the imaging tool may fail unexpectedly.

Clarifying the structural or bonding changes that cause this behavior would improve reliability of molecular imagers and help refine protocols for controlled reactions and imaging stability.