83 citations · 366 across the 11 of their papers we have counts for
11 papers
Broadband strong optical dichroism in topological Dirac semimetals with Fermi velocity anisotropy
J. Lim, K. J. A. Ooi, C. Zhang +2
Prototypical three-dimensional (3D) topological Dirac semimetals (DSMs), such as CdAs and NaBi, contain electrons that obey a linear momentum-energy dispersion with dif…
Fractional Fresnel coefficients for optical absorption in femtosecond laser-induced rough metal surfaces
Muhammad Zubair, Yee Sin Ang, Kelvin J. A. Ooi +1
The surface morphology of metal influences its optical absorptivity. Recent experiments have demonstrated that the femtosecond laser induced surface structures on metals could be d…
Generalized Fowler-Nordheim field-induced vertical electron emission model for two-dimensional materials
Yee Sin Ang, M. Zubair, K. J. A. Ooi +1
Current theoretical description of field-induced electron emission remains mostly bounded by the classic Fowler-Nordheim (FN) framework developed nearly one century ago. For the em…
Highly Efficient Midinfrared On-Chip Electrical Generation of Graphene Plasmons by Inelastic Electron Tunneling Excitation
Kelvin J. A. Ooi, Hong Son Chu, Chang Yu Hsieh +2
Inelastic electron tunneling provides a low-energy pathway for the excitation of surface plasmons and light emission. We theoretically investigate tunnel junctions based on metals…
Efficiencies of Aloof-Scattered Electron Beam Excitation of Metal and Graphene Plasmons
Kelvin J. A. Ooi, Wee Shing Koh, Hong Son Chu +2
We assessed the efficiencies of surface plasmon excitation by an aloof-scattered electron beam on metals and graphene. Graphene is shown to exhibit high energy transfer efficiencie…
Waveguide engineering of graphene's nonlinearity
Kelvin J. A. Ooi, Lay Kee Ang, Dawn T. H. Tan
Graphene has recently been shown to possess giant nonlinearity; however, the utility of this nonlinearity is limited due to high losses and small interaction volume. We show that b…