https://doi.org/10.1103/PhysRevD.104.084085
https://doi.org/10.1103/PhysRevD.104.084086
https://doi.org/10.1364/BOE.441118
https://doi.org/10.3390/jof7100841
https://www.photonics.com/Articles/Plasmonic_Tip_Detects_Viruses_Raman_Signal/a67256
https://doi.org/10.1103/PhysRevD.104.084085
https://doi.org/10.1103/PhysRevD.104.084086
https://doi.org/10.1364/BOE.441118
https://doi.org/10.3390/jof7100841
https://www.photonics.com/Articles/Plasmonic_Tip_Detects_Viruses_Raman_Signal/a67256