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(Color online) Experimental setup and device used in the experiment. (a) Schematic of the vacuum chamber, sample position, and optical setup. (b) Working mechanism for charging by plasma. (c) SEM image of the gold nanoparticles.
(Color online) (a) Experimental extinction spectrum for gold nanodisk array. Raw data is shown as solid lines. The fitted curve for the initial position (dashed line) and the final position (dashed-dotted line) are shown as dashed lines. The insert displays a closer view of the peak positions. (b) The extinction spectrums for the initial position (solid line) and the final position (dashed line) of the extinction spectrum simulated using DDA for the experimental conditions.
(Color online) Dynamic response of the LSPR peak shift for three separate tests with a single nanodisk sample. The peak position of the fitted curve was recorded every 0.1 s. The blue circle and red square indicate the data points corresponding to the peak position of the initial and final curves plotted in Fig. 2(a), respectively.
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