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A. Schematics of the experimental setup. Latched light bar illuminators, ultrasound probe, and multi-tube phantom frame with sample tubes oriented orthogonally to imaging plane, all are placed inside a thermostat filled with a coupling liquid. B. TEM images of GNRs before (suspension of GNRs in 10 mM CTAB) and after pegylation (PEG) and their normalized UV–Vis spectra.
