Raw data used in Figure 3A as a compressed .zip file. Data is arranged in folders corresponding to each experiment. The folders contain .csv spreadsheet files with the raw oscilloscope readings. Each spreadsheet contains the following columns: Channel 1 (s); Channel 1 (V); Channel 2 (s); Channel 2 (V); Channel 3 (s); Channel 3 (V). In all cases Channel 1 is the cell coated with Au NPs. Channel 2 is the signal from the shutter. Channel 3 is the signal from a reference cell.