Graphene-based 1D defective photonic crystal biosensor for real-time detection of cancer cellsAbinash Panda, Puspa Devi Pukhrambam, Feng Wu and Walid BelhadjEur. Phys. J. Plus, 136 8 (2021) 809DOI: https://doi.org/10.1140/epjp/s13360-021-01796-z