1. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
2. Laboratory of Agricultural Information Intelligent Sensing, School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
3. School of Electrical Engineering and Automation, Wuhan University, Wuhan, Hubei 430071, China