Terahertz conductivity in 2D materials: 

We investigate the effect of different scattering mechanisms in terahertz transport in 2D materials, especially transition metal dichalcogenides (TMDs) using our in-house multiphysics tool combining ensemble monte carlo (EMC) and  Finite-difference time-domain (FDTD) technique. 

Revelvant publication:

1. S. Mitra, L. Avazpour, and I. Knezevic, “Terahertz conductivity of monolayer MOS$$_2$$,” Journal of Computational Electronics, 2023. doi:10.1007/s10825-023-02023-x

Talks:

1. https://iwcn2023.uab.es/abstract/86.pdf

2. S. Mitra and I. Knezevic, "Simulation of ac conductivity of monolayer MoS2 at terahertz frequencies," 2022 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), Turin, Italy, 2022, pp. 101-102, doi: 10.1109/NUSOD54938.2022.9894759.

Nonlinear optical enhancement using plasmons: 

We theoretically demonstrate the increase of nonlinear optical properties in graphene by patterning with anti-dots to induce plasmonic resonance. 

Revelvant publication:

1. F. Karimi, S. Mitra, S. Soleimanikahnoj, and I. Knezevic, “Plasmon-enhanced optical nonlinearity in graphene nanomeshes,” Physical Review B, vol. 108, no. 3, 2023. doi:10.1103/physrevb.108.035414