2D Gallium Sulfide-Based 1D Photonic Crystal Biosensor for Glucose Concentration Detection.

Unidimensional photonic crystal-based biosensors have gained much attention in the area of blood glucose measurement. In this paper, we propose two novel designs based on two-dimensional (2D) Van der Waals materials. The first 1D photonic crystal design consists of multilayers of 2D gallium sulfide and 2D muscovite mica [GaS/Mica]D[GaS/Mica], and the second design consists of multilayers of 2D gallium sulfide [GaS/G]D[GaS/G].

Effect of nonlinear interactions on resonant states of the random dimer model.

A simple Kronig-Penney model for 1D mesoscopic systems with δ peak potentials is used to study numerically the effect of non-linear interaction on the resonant states of the random dimer model. It is shown that the nonlinear interaction increases or decreases the width of the resonances depending on both its sign and strength. The resonance width ΔE is a power law decaying with the system size as L(-γ).