Review of Zhou Qitao/Xia fan research group about self-powered biochemical sensor based on friction nano generator

Review of Zhou Qitao/Xia fan research group about self-powered biochemical sensor based on friction nano generator

The development of the Internet of things needs a large number of sensors, including biochemical sensors. The problem of energy supply brought by a large number of sensors can not be ignored. The new energy technology based on triboelectric generator (TENG) is expected to bring revolution to this field. This is because TTENGs can convert mechanical energy into electrical energy to supply power for various biochemical sensors. At the same time, TENGs can also be used as an active self-powered biochemical sensor.

Recently, Zhou Qitao/Xia Fan research group of China University of Geosciences (Wuhan) summarized the self-powered biochemical sensing system based on friction nano generator. In this review, the current self-powered biochemical sensor systems based on TENG are mainly divided into two categories. One is the active self-powered biochemical sensor that only depends on the TENG for power supply, and the other is the active self-powered biochemical sensor that uses the change of the output performance of the friction nano generator caused by the change of the electrical properties or the ability of gain and loss of electrons after the target molecules are adsorbed on the surface of the friction material. For the former, the author believes that in addition to improving the output performance of the device itself, power management should also be considered. At the same time, the combination of the high output voltage of TENG and some mature testing methods is also a potential application direction. In the aspect of active biochemical sensor based on TENG, based on the classical analytical chemistry thinking, since the probe part of the sensor is mainly lack of specific friction material surface itself, improving the specificity of this type of device will be an important research direction. Based on the author's own experience, the author proposes that the use of more mature specific modification methods in analytical chemistry is expected to solve this problem.

Figure 1. Self-powered sensing system based on TENG.

The work was published on Advanced Materials under the title of "Triboelectric nanogenerator based sensor systems for chemical or biological detection".

The research was supported by the National Natural Science Foundation of China. Professor Xia Fan of China University of Geosciences (Wuhan) and Professor Taesung Kim of Ulsan National Institute of Science and Technology of Korea are the corresponding authors of the work, and the first author is Professor Zhou Qitao of China University of Geosciences (Wuhan).

Article link: https://doi.org/10.1002/adma.202008276