Fig. 4: Bi-analyte single-molecule SERS investigations with the Au@Al2O3-Au-Au@Al2O3 trimers.
From: Plasmonic trimers designed as SERS-active chemical traps for subtyping of lung tumors
a 2D statistical map of the single-molecule 4-MBT events, 4-Mpy events and mixed events by the bi-analyte method (40 × 41, step 1.5 μm, integral time 500 ms). b Typical SERS spectra of single-molecule 4-MBT events (purple), single-molecule 4-Mpy events (brown), mixed events (blue) and null events (pink). c Statistical histograms of pure 4-Mpy events (brown), mixed events (bule) and pure 4-MBT events (purple). d Probability histogram of the pure 4-Mpy events obtained by MPCA algorithm. Source data are provided as a Source Data file.
