Table 2.

Comparison of microelectrode properties between AuNPs and rough-surfaced AuPt alloy nanoparticles modified sites.

	AuNPs Modified Site	AuPt Alloy Modified Site
Average impedance at 1 kHz (MΩ)	0.9	0.23
Average spike amplitude $\left(\mathsf{\mu }\mathrm{V}\right)$	281.2	273.7
Average SNR	3.4	4.8

Note: AuNPs stands for Au nanoparticles; SNR stands for signal-to-noise ratio.