Peng, Y.; Lin, C.; Long, L.; Masaki, T.; Tang, M.; Yang, L.; Liu, J.; Huang, Z.; Li, Z.; Luo, X.; Lombardi, J. R.; Yang, Y. Charge-Transfer Resonance and Electromagnetic Enhancement Synergistically Enabling MXenes With Excellent SERS Sensitivity for SARS-CoV-2 S Protein Detection. Nano-Micro Lett 2021, 13, 52.