Dual-Resonance Plasmonic Nanocavity with Differential Thermo-Optic Response for Enhanced Fiber-Optic Thermal Flowmeters. - Cao, Yekun; Sun, Lei; Li, Min; Li, Ming-Yu; Wen, Xiaoyan; Deng, Shuo; Liu, Sisi; Gao, Hongyun; Lu, Haifei; Yao, Dengzun (Photonics, 2026)