Xmas Decoration Doll,Christmas Decor Dolls,Santa Doll,Christmas Doll Zhoushan Kaiyun Christmas Toys Co., Ltd. , https://www.kaiyuntoy.com
[China Instrument Network Instrument Development] The rapid development and commercialization of flexible wearable electronic devices has accelerated the transformation and upgrading of energy storage devices. In order to well match wearable electronic devices, the energy storage used must have features such as high safety, small size, long life, easy integration, and high power density.
Picture source: Institute of Semiconductors, Chinese Academy of Sciences
In view of the above requirements, the planar micro-capacitor is the best choice for energy supply devices. However, a single capacitor has a small voltage window and low energy density, making it difficult to continuously and continuously power the wearable device. The easiest way to solve this problem is to connect multiple micro capacitors in series to form an array to power the functional units of the wearable integrated system. So far, many different types of integrated array-driven detection systems have been developed, such as integrated light detection systems, integrated pressure sensor systems, and so on. In addition to sensors such as pressure, light, and heat, organic gas sensors have been playing an increasingly important role in environmental monitoring, industrial sites, and security in recent years. However, compared with light detection and pressure sensors, gas sensors respond to target gases. For a long time, the corresponding energy consumption is greater, the requirements for energy devices are higher, and the integration is more difficult. Therefore, it is of great significance to study the integrated system of self-driven gas sensors.
State Key Laboratory of Superlattices, Institute of Semiconductors, Chinese Academy of Sciences, Shen Guozhen, recently developed a new type of wearable gas sensor and real-time display system driven by micro-capacitor arrays. The integrated system consists of an array of circular capacitors based on electrodeposited polypyrrole electrode materials, a normal-temperature ethanol gas sensor based on carbon nanotubes/polyaniline materials, and an in-situ gas analysis and display system. The area specific capacitance of the assembled capacitor was 47.42 mF/cm2, and the response time of the gas sensor to ethanol gas at normal temperature was 13 s and 4.5 s, respectively. When gas enters the sensor, the currents on both sides of the gas sensor will change. The components in the circuit board will collect this change and calculate it, compare it with the pre-stored standard curve to obtain the gas concentration value, and then send the signal via Bluetooth. Transmitted to the mobile phone, then the mobile phone APP will show the corresponding gas concentration and draw a real-time It curve, have a wide range of application prospects in the personalized drunk driving test and other fields.
The research results were recently published in the journal Nano Energy (2017, 41, 261.). The work was supported by projects supported by the National Natural Science Foundation of China, the Beijing Municipal Natural Science Foundation, and the Frontier Science Key Research Program of the Chinese Academy of Sciences.
(Original Title: New Progress Made in the Self-Driving, Flexible Gas Sensing and Display System for Semiconductors)