Boosting the Electrostatic MEMS Converter Output Power by Applying Three Effective Performance-Enhancing Techniques.

Area of Science:

• Micro-electro-mechanical systems (MEMS)
• Energy Harvesting
• Semiconductor Device Physics

Background:

• Electrostatic MEMS converters are crucial for energy harvesting.
• Enhancing their output power is essential for practical applications.
• Existing designs face limitations in power conversion efficiency.

Purpose of the Study:

• To significantly boost the output power of electrostatic MEMS converters.
• To investigate the impact of CMOS technology scaling on converter performance.
• To optimize structural and technological parameters for maximum power output.

Main Methods:

• Upgraded CMOS technology from 0.35 µm to 0.6 µm for power conditioning and control circuits.
• Optimized MEMS converter parameters including thickness, finger width, and length.
• Redesigned the converter structure to utilize shuttle mass area for increased capacitance.

Main Results:

• CMOS technology upgrade increased maximum system voltage from 8 V to 30 V, boosting power from 2.1 mW to 4.5 mW.
• Parameter optimization further increased output power from 4.5 mW to 11.2 mW.
• Structural redesign enhanced output power to a final 14.29 mW, a total increase of 12.19 mW.

Conclusions:

• A combination of CMOS scaling, parameter optimization, and structural redesign effectively enhances electrostatic MEMS converter output power.
• The developed techniques offer a viable pathway for improving energy harvesting device performance.
• Further research can explore advanced materials and fabrication processes for even greater power gains.