hello everyone , my question is what are the gold nano-particles property's that different from size to size , and is this reflect on its applications? and what is the size range that usually used in designing electrochemical sensors?
Nanoparticles is unique due to its size. The smaller the size, the active will be your sample.
Small Au-nanoparticles show surface plasmon resonance (SPR) while bigger ones show Z-axis bridging properties. Sometimes small Au-nanoparticles show magnetic property. Size dependent refractive index, optical, catalytic, thermal, photocatalytic properties etc. of Au-nanoparticles are seen.
The size rage of gold nanoparticles for sensor application depend on the purpose of applications or which property is considered. Usually 3-100 nm Au-nanoparticles are used in sensor-technology. Please see the attached paper.
Nanoparticles is unique due to its size. The smaller the size, the active will be your sample.
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