机译:Tunable Hyperbolic Phonon Polaritons in a Suspended van der Waals α-MoO_3 with Gradient Gaps
Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangdong Prov Key Lab Display Mat & Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China;
air gaps; hyperbolic phonon polaritons; nano-imaging; van der Waals crystals; alpha-MoO3;