Table 1 Characteristic comparison between gold and aluminium as a material for biosensor development.

From: Comparative Analysis on Dielectric Gold and Aluminium Triangular Junctions: Impact of Ionic Strength and Background Electrolyte by pH Variations

Properties

Gold

Aluminium

Electrical conductivity

Good in electrical conductivity and able to enhance

the sensing performance

Production cost

Expensive

Low cost and easy to manufacture

Availability

In demand

Easily available

Material degradation

No material degradation

Corrosion and pitting

Optical properties

Good absorption and scattering properties

Good plasmonic properties

Oxidation

Difficult to oxidize

Easily oxidized

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