Structural Optimization And The Exploration Of Sensor Application Of Biocompatible Triboelectric Nanogenerator

With the innovative development of the new generation of information technology industry of the 21st century,sensors,which work on transmit a large amount of information and data,have become particularly important.Its development directly affects the efficiency of information processing.We all know that energy is the guarantee of the normal operation of all electronic equipment.However,if we use the traditional battery for power supply,it will not only cost too much but cause environmental pollution.Thus,to develop a new,green and sustainable energy devices has been a research hotspot to ensure the mobility and portability of sensors.The triboelectric nanogenerator?TENG?has attracted more and more researchers'attention and been widely used in the design of self-powered sensors for its unique power generation mode and excellent performance since invented in 2012.Here,we mainly focus on exploring the application of TENG as a self-powered sensors in biomedical field.1.A self-powered sensor for detecting the in-vivo corrosion state of magnesium?Mg?was prepared by combining TENG with the in-vivo corrosion of biomedical Mg.The corrosion degradation of Mg sheet in human body was simulated by immersing it into simulated body fluid for 30 days.It was observed that both the quality of Mg friction plate and the electrical output performance of TENG decreased with the extension of immersion time,and the change rate of the two parameter was basically linear.The reduction rates of short-circuit current(I_sc)and open-circuit voltage(V_oc)of TENG were 3.48 and 2.74 times of the weight change rate of Mg sheet respectively,laying a basis for real-time monitoring of the corrosion state of Mg.2.Mg sheet treated by micro-arc oxidation?MAO?and the polydimethylsiloxane?PDMS?were used as the friction layers to prepare TENG.The electrical output performance of TENG was improved by optimizing the MAO treatment process of Mg friction plate and TENG's structure.The results showed that the best electrical output performance of TENG was about3 times higher than that of TENG prepared by untreated Mg sheet,and about 1.4 times higher than that of previous experimental results.In addition,the I_sc of the parallel sandwich-type TENG was continually increased by 1.8 times,and the windmill-type TENG with sliding friction was expected to be used in the design of self-powered counter in the future.3.A glucose concentration detecting sensor based on biocompatibility TENG was prepared by using the specific oxidation of glucose oxidase?GOD?to glucose.It was found that the electrical signal change rate of TENG was basically linear with the concentration of glucose when the concentration of glucose was changed from 3.9 to 13.1 mmol/L,and the purpose of detecting glucose concentration was initially achieved.