“…Meanwhile, strong electric field localization can be observed in the R1 region from the x-component of the electric field (Ex) distribution at λ1 (Fig. 2c), indicating that the middle part of the borophene nano-rectangles provides principal channels for the energy transportation at λ1 [19,33]. At λ2 = 1.286 μm, electric field enhancement is mainly located at the four corners of the borophene nano-rectangle (Fig.…”