“…In natural forest environments, various factors, such as fire ignition due to lightning, hot and dry weather conditions, and vegetation drought, can easily lead to forest fires, resulting in widespread impacts on the natural environment, wildlife, and the physical and mental health of individuals. 176 To address the issue of remote forest fire warnings, as illustrated in Fig. 14b, Fu et al 177 proposed a triboelectric nanogenerator that relies on charge excitation and automatic mode switching, transitioning between contact mode at low speed and non-contact mode at high speed.…”