Azizan, Muhammad Danial Haziq, et al. “Optimizing Q-Factor in 2D Photonic Crystal Nanocavity: Impact of Cavity Design and Cladding Materials”. ELEKTRIKA- Journal of Electrical Engineering, vol. 24, no. 2, Aug. 2025, pp. 141-8, doi:10.11113/elektrika.v24n2.644.