This particular geometry forms a «hot spot» between the metallic triangle points capable of concentrating electromagnetic fields in a small volume — just tens of nanometers across. (discovermagazine.com)
The nanorods range in size from a few hundred nanometers to a few micrometers in length, and a few tens of nanometers in diameter. (sciencedaily.com)
Variety of low cost, stable and catalytically active water splitting materials such as Fe2O3 and BiVO4 have poor charge transport characteristics leading to low PEC efficiency.1, 2 Surface plasmon polaritons (SPP) excited in nanopatterned Al concentrate optical fields in the UV and visible ranges, thus enhancing light absorption within few tens of nanometers of semiconducting material deposited over the Al substrate. (h2awsm.org)