Table 1. Electrical parameters’ variations associated with folding effects of aptaMETH at nano-Au modified surface.

Analysis	Rs(Ω)	C(F)	Ret(Ω)	Zw(Ω)
Bare gold electrode	358.28	5.97×10- 7	23766	2.56×10- 5
Au NPs/ Au electrode	359.02	8.49×10- 7	15774	1.76×10- 4
AptaMETH-modified electrode	355.99	8.14×10- 7	83473	1.06×10- 4
AptaMETH and Amph	340.354	6.89×10- 7	170830	3.49×10- 5
AptaMETH and METH	340.13	6.32×10- 7	367000	2.31×10- 5