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We present a new transparent high-performance triboelectric microgenerator (TEMG) based on an emerging material, silk fibroin. Silk fibroin has a strong ability to lose electrons and occupies a top-level positive position in the triboelectric series. It thus significantly contributes to the performance enhancement of TEMG. To efficiently harvest energy from airflow, a channel-shaped TEMG was developed...
We present a floor-based large-area triboelectric generator. Based on the effect of triboelectrification and electrostatic induction, electricity can be generated when someone steps on the device. The output performance under different situations is investigated and optimized. This new design has plenty potential in harvesting walking energy as well as monitoring the motions of people or animals for...
This paper reports the design, test and application of a novel low frequency piezoelectric energy harvester. To achieve high output voltage at low frequency, both d31 and d33 modes of polyvinylidene fluoride (PVDF) are utilized in this device. Output voltage of the device are tested under different frequencies and accelerations. Rectifying bridge is used to reverse signals with negative signs and...
This paper presents a CMOS capacitive sensing amplifier for a SiC MEMS capacitive pressure sensor. Noise performance and noise optimization studied from a theoretical point of view. This amplifier is a differential difference amplifier (DDA) with optimal transistor sizing to minimize sensor noise floor. The simulation result shows that the circuit can obtain a stable and linear voltage, and Continuous-Time...
A MEMS RF Filter on glass substrate has been designed, simulated, fabricated and tested. The fabrication process has been developed based on copper electroplating, which is compatible with the copper inductor fabrication process, so it can be integrated into LC filter. Finally, spiral capacitors with different dimensions and LC filters have been fabricated successfully. Then a detailed analysis of...
A novel MEMS spiral capacitor on glass substrate has been designed, simulated and fabricated. The square spiral capacitors with different width, space, thickness and turn number have been studied by HFSS. The fabrication process has been developed based on copper electroplating, and it is compatible with the copper inductor fabrication process, which can be integrated into LC filter. Finally, spiral...
Due to the research work has been done in RF MEMS fields for more than 10 years, RF lumped elements, like inductor, tunable capacitor, CPW line and switch, are developed very well, and studied deeply. But for its wireless application, integrated tunable RF net work, which composed by these lumped elements are much more important and useful, especially in high and medium frequency system, high performance...
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