Journal: ACS Measurement Science Au
Article Title: Achiral Plasmonic Antennas Enhance Differential Absorption To Increase Preferential Detection of Chiral Single Molecules
doi: 10.1021/acsmeasuresciau.4c00026
Figure Lengend Snippet: Experimental and computational optical characteristics around left-handed Au NP dimer antennas under left and right circularly polarized light (LCP and RCP, respectively). (a) Distributions of the intensities of molecules detected at the center of the Au NP dimer antenna (apparent position within the red circle; radius = 12.5 nm). (b–e) Profiles in the sample plane calculated from FDTD simulations of Au NP dimer antennas excited by a circularly polarized plane wave incident along the z -axis with a wavelength of 635 nm. (b, c) Electric field enhancement profiles under (b) left and (c) right circularly polarized excitation. (d, e) Optical chirality enhancement profiles under (d) left and (e) right circularly polarized excitation.
Article Snippet: Full-field electromagnetic simulations of Au NP dimer antennas excited by an incident plane wave were performed with a finite-difference time-domain (FDTD) algorithm (Ansys Lumerical FDTD) as described previously.
Techniques: