Cactus‐Inspired Tip Interfaces Coupling Transient Thermorheology and Local Polarization Amplification for Efficient Pyroelectricity Energy Harvesting. - Sun, Qi; Qin, FuFei; Jing, Mingxing; Sun, Rongzhi; Wang, Wensheng; Wu, Han; Sun, Zhuangzhi (Advanced Functional Materials, 2026)