Cross-Study Reconstruction of Wavelength Scaling in Light-Driven Plasmonic Nanomotors

This preprint reconstructs wavelength-dependent rotational response from published source-video measurements of light-driven plasmonic nanomotor systems reported by Wu et al. (2022) and Qin et al. (2025). The analysis keeps cross-platform transfer explicit and reconstructs a conditional unity-transfer wavelength exponent of a_ref = 0.5141, with tested Wu fitting windows spanning 0.5053 to 0.5192. Because optical power was not separately recorded for the specific Wu trajectory analyzed, this exponent is conditional on the published 0.31 mW/um^2 four-motor reference operating intensity. A separate same-platform reconstruction of Wu Supplementary Fig. S2 gives a_S2 = 0.5090. These retrospective results motivate, but do not validate, the exact square-root hypothesis a = 1/2, which is reserved for prospective same-target testing. The accompanying archive contains the manuscript, provenance notes, metadata, reproducibility script, regenerated numerical output, licensing information, and SHA-256 integrity hashes.