Biodegradable Silicon-Based Electromagnetic Energy Harvester toward Wireless Power Supply

Area of Science:

• Materials Science
• Electrical Engineering
• Biomedical Engineering

Background:

• Transient electronics offer potential for biomedical implants, reducing e-waste, and secure systems by degrading after use.
• Reliable transient energy supplies are crucial for widespread implementation but remain a significant challenge.
• Current wireless power solutions often use metal coils with rapid dissolution rates, limiting operational lifetime.

Purpose of the Study:

• To develop a biodegradable electromagnetic energy harvester for transient electronics.
• To overcome the limitations of metal-based coils in transient wireless power supplies.
• To establish a reliable platform for sustainable transient energy harvesting.

Main Methods:

• Fabrication of a biodegradable electromagnetic energy harvester using heavily doped silicon membranes.
• Conducting dissolution studies to evaluate the functional lifetime of the silicon-based harvester.
• Performing accelerated degradation tests to assess complete disappearance.

Main Results:

• The silicon-based energy harvester demonstrated a significantly increased functional lifetime compared to conventional magnesium-based counterparts.
• The developed device is capable of wireless power supply.
• The silicon membranes completely disappeared under accelerated degradation evaluation.

Conclusions:

• A reliable biodegradable electromagnetic energy harvester based on silicon membranes has been established.
• This technology addresses the critical challenge of transient energy supply for transient electronics.
• Potential applications include chronic disease management, long-term electronic implants, and sustainable green electronics.