Fig. 4: Near-field optical investigation of a large array wrinkle.
From: Programmable nanowrinkle-induced room-temperature exciton localization in monolayer WSe2
a AFM topography of the nano-PL scanned region. White circles are a guide for the eye, marking the approximate location of the nanocone stressors. b Near-field intensity in the primary exciton spectral range of 740–770 nm. c Near-field intensity in the low-energy spectral range of 770–900 nm. d Select spectra, taken from the locations marked with white arrows in (c), showing a diverse assortment of low-energy states. The blue and red colored regions correspond to the integration ranges for (b) and (c), respectively. The bold solid lines are the result of a moving average overlaid on top of the raw data for clarity. All scale bars are 250 nm.
