Hybrid Triboelectric-Electromagnetic-Piezoelectric Wind Energy Harvester toward Wide-Scale IoT Self-Powered Sensing.

Wind energy is the most promising alternative to fossil fuels as a clean, nonpolluting, and renewable source of energy. However, how to achieve stable and efficient harvesting of wind energy has been a major challenge. Here, a triboelectric-electromagnetic-piezoelectric hybrid wind energy harvester (TEP-WEH) based on the cantilever is proposed.

Giant Electrostrain in Lead-Free Textured Piezoceramics by Defect Dipole Design.

By converting electrical signal into mechanical displacement, piezoelectric actuators are widely used in many applications due to their precise displacement, fast response, and small size. The unipolar electrostrain values larger than 1% reported so far are from lead-based single crystals or ceramics, which brings environmental concerns. Herein, a giant unipolar electrostrain of 1.

First report of Neopestalotiopsis protearum causing seed rot on Camellia oleifera in China.

Camellia oleifera, an evergreen small tree or shrub with high medicinal and ecological values, is mainly distributed in subtropical regions of China. Camellia oil obtained from Camellia oleifera seeds is rich in unsaturated fatty acids and unique flavors, and has become a rising high-quality edible vegetable oil in south of China (Zhuang 2008). The tea-oil tree Camellia oleifera plays important economic and ecological roles in Hunan province.