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. Author manuscript; available in PMC: 2018 Jan 3.
Published in final edited form as: Anal Chem. 2016 Nov 22;89(1):314–341. doi: 10.1021/acs.analchem.6b04278

Figure 8.

Figure 8

SEM images of (A) unmodified CNTYME and (B) laser treated CNTYME. Scale bar: 500 nm. Effect of scan repetition frequency for 1 µM dopamine detection at CFMEs, unmodified and laser treated CNTYMEs: (C) Peak oxidation current at CFMEs (green dot, n = 5), unmodified CNTYMEs (black dot, n = 5), and laser treated CNTYMEs (red dot, n = 5) with −0.4 to 1.3 V waveform and scan rate of 400 V/s. Peak currents were normalized to the current at 10 Hz, and error bars represent the standard error of the mean. (D) Example normalized CVs of 1 µM dopamine bolus injection at unmodified CNTYME, laser treated CNTYME, and a CFME at 10 Hz (blue line) and 50 Hz (orange line) scan repetition frequency. CVs are normalized to the 10 Hz signal. Reproduced from Cheng Yang,; Elefterios Trikantzopoulos,; Michael D. Nguyen,; Christopher B. Jacobs,; Ying Wang,; Masoud Mahjouri-Samani,; Ilia N. Ivanov,; B. Jill Venton, ACS Sens., 2016, 1 (5), pp 508–515 (ref 216). Copyright 2016, American Chemical Society.