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Meet the new power of the future, nano power generation is coming
03-20
Our living environment is full of various energies, such as vibration energy, chemical energy, biological energy, solar energy and thermal energy, etc., but most of these energies are not utilized or the utilization rate is extremely low. The nanogenerator is based on regular zinc oxide nanowires, which convert mechanical energy into electrical energy in the nanometer range, and is known as the smallest generator in the world.
ubiquitous nanogenerators
Its advent completely broke the limit of people's understanding of the size of the "generator". Nanogenerators can realize the collection and utilization of extremely small mechanical energy in the environment. For example, noises of various frequencies caused by the flow of air or water, the rotation of engines, the operation of machines, etc., the stretching of muscles or the trampling of feet on the ground when people walk, and even the noise caused by breathing, heartbeat or blood flow in the human body. A slight change in the pressure somewhere in the body can drive the nanogenerator to generate electricity. Therefore, the nanogenerator theory provides an ideal power solution for the current realization of the Internet of Things and sensor networks as well as big data.
At present, nanogenerators can be divided into three categories: the first category is piezoelectric nanogenerators; the second category is triboelectric nanogenerators; the third category is pyroelectric nanogenerators. Generally used in biomedicine, military, wireless communication, wireless sensing and other fields.
In today's era of rapid development of stretchable and wearable electronic devices, it is of great value and significance to study flexible mechanical energy harvesting devices. In recent years, the research on the assembly of flexible triboelectric nanogenerators with flexible materials instead of polymer commercial films and metal sheets has become a bright spot. Recently, many research achievements have been made on flexible triboelectric nanogenerators.
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