Coupling of electromagnetic energy from macroscale external light sources to nanometer-scale volumes associated with plasmonic and dielectric nanoantennas is utilized for excitation of Raman scattering on nanoparticles, excitation of semiconductor quantum dots, and resonant optical absorption. These phenomena are used in the context of detection of biomolecules for applications that include disease diagnostics from single-droplet test samples derived from bodily fluids.
Jui-Nung Liu, Qinglan Huang, Keng-Ku Liu, Srikanth Singamaneni, and Brian T. Cunningham, "Resonant coupling from photonic crystal surfaces to plasmonic nanoantennas: principles, detection instruments, and applications in digital resolution biosensing," Proc. SPIE 10536, Smart Photonic and Optoelectronic Integrated Circuits XX, 105361O (Presented at SPIE OPTO: February 01, 2018; Published: 22 February 2018); https://doi.org/10.1117/12.2285828.
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