So far, most studies on antenna-reactor systems have used lossy metals like Au , Al , Cu , etc., as the plasmonic antenna, which inevitably absorb and thermalize a large chunk of absorbed power (68.6% in Au + Pt nanoparticle system as shown in Figure ). Generally, losses in metals have always been a concern for applications of plasmonic nanostructures. Alternatively, low loss dielectric materials have been prescribed as a fix to this bottleneck in common plasmonic materials. As shown in Figure (a), high refractive index dielectric Gallium Phosphide (GaP) as an antenna as per the configuration in case E significantly enhances the absorptance of Pt nanoparticles, especially in the short wavelength regime. The near-field spectra and maps in Figure (a) and (b) show that GaP-to-GaP coupling via Pt nanoparticles leads to this enhanced absorption in Pt.