We have demonstrated a new type of vibrational energy harvester based on an electret called an electric double layer electret (EDLE) and its application as a vibrational energy harvester. By mech ... Read More

Electret-based vibrational energy generators (E-VEGs) have attracted considerable attention because they can generate electrical power from ambient vibration. E-VEGs have a capacitor structure in ... Read More

In this paper, we present demonstration results for a contactless electrostatic vibration energy harvester (E-VEH) using electric double layer electrets (EDLEs). We, for the first time, utilize t ... Read More

Similarly to a harmonica reed, a piezoelectric MEMS cantilever is self-excited by an airflow. An airflow-induced self-excited vibration can be utilized as an energy source for energy-harvesting d ... Read More

This paper presents a methodology to extend the working bandwidth of vibration energy harvesters (VEHs) by using a voltage-boost rectifier (VBR) circuit. The VBR circuit rectifies small ac volta ... Read More

Low-loss rectification is essential for vibration energy harvesters. However, an extremely low loss is difficult to achieve in rectification using diodes due to the voltage drop caused by the thr ... Read More

In this work, a self-powered fault diagnosis system using vibration energy harvesting was constructed to verify the accuracy of state identification and abnormality detection for a monitored targ ... Read More