The research team led by Associate Professor Zhang Xiaoyue, based at the School of Physics at Sun Yat-sen University and the Key Laboratory of Magnetoelectric Physical Property Analysis and Devices of Guangdong Province, has pioneered a groundbreaking technique known as electrically modulated photothermal force microscopy (ePTFM). This innovation integrates in-situ electrical modulation, linearly polarized infrared excitation, and atomic force probe measurement methods.