The Effect of Multilayer Gold Nanoparticles on the Electrochemical Response of Ammonium Ion Biosensor Based on Alanine Dehydrogenase Enzyme
Figure 2
Scanning electron micrographs of gold substrates coated with (a) one layer and (b) five layers of AuNPs using colloidal Au particles of 5 nm. AuNPs mainly appeared as discrete bright dots.
