Modeling 2D Arrangements of Graphene Nanoribbons

In the last two decades, interest in graphene has grown extensively due to its extraordinary properties and potential for various applications such as sensing communication. However, is intrinsically a semimetal with zero bandgap, which considerably delays use where suitable bandgap required. this context, quasi-one-dimensional counterparts known nanoribbons (GNRs) have demonstrated sizeable bandgaps versatile electronic properties, make them promising candidates photonic plasmonic applications. While progress recently been made toward synthesis of GNRs, theoretical models envisage their optical restricted ab initio approaches, are not feasible wide systems because large number atoms tangled. Here, we semi-analytical model based on Dirac cone approximation show adjustable characteristics experimental both freestanding non-freestanding. This approach utilizes group velocity graphene, calculated using density functional computations (vF=0.829×106 m s−1), primary input. Importantly, our research reveals that at terahertz level, plasmon-momentum dispersion highly responsive changes by varying ribbon width or charge carrier concentrations, other involved parameters can be manipulated setting values from experiments more sophisticated predictions. particular, replicate GNRs Ge(001) Au(111). From side, plasmon spectrum microribbon arrays 4 μm Si/SiO2 GNR Si found good agreement experiments. The molecules chlorpyrifos-methyl also discussed. Chlorpyrifos-methyl chosen test molecule it commonly used insecticide agriculture, but high toxicity organisms humans makes concern. It established resonances all studied occur same frequency chlorpyrifos-methyl, 0.95 THz. Our findings serve useful guide future