Aluminum Oxide Alumina 4 Fiber optic sensors 4 Gold 4 Metal Nanoparticles 4 Metal nanoparticles 4 Nanoparticles 4 Porosity 4 aluminum oxide 4 chemistry 4 gold 4 impedance 4 metal nanoparticle 4 porosity 4 procedures 4 Active sites 2 Addition reactions 2 Adenosine Monophosphate 2 Adenosine monophosphate 2 Al(III) 2 Aluminium structures 2 Aluminum 2 Aluminum cladding 2 Aptamers, Nucleotide 2 Article 2 Biosensing Techniques 2 Carbon 2 Carbon deposition 2 Carbon deposits 2 Catalysis 2