Z. Dai, G. Hu, G. Si, Q. Ou, Q. Zhang, S. Balendhran, F. Rahman, B. Y. Zhang, J. Z. Ou, G. Li, A. Alù, P. Alonso-González, C. W. Qiu, and Q. Bao, “Edge-Oriented and Steerable Hyperbolic Polaritons in Anisotropic Van der Waals Nanocavities,” Nature Communications, Vol. 11, No. 6086 (2020)