U.S. Patent  Jun.25,2019  Sheet 31 of 35  US 10,332,688 B2  Figure 31  18  .,.,.-..,  0  ~  ..._,,  16  w  0  0...  14  •--•  1111111------- ---•  ■------·  ■------------ ■---- 1000  100  Scan rate (mV /s) 