Lightweight Torque Sensor Based on a Gradient Grating Period Guided-Mode Resonance Filter Wang, Yen-Chieh ; Jang, Wen-Yea ; Huang, Cheng-Sheng Abstract Publication: IEEE Sensors Journal Pub Date: August 2019 DOI: 10.1109/JSEN.2019.2911982 Bibcode: 2019ISenJ..19.6610W