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Researchers achieve 38.49% efficiency in laser-based drone charging with nanocrystals
Key points
- Civil Aviation University of China researchers developed a laser charging system.
- The system achieves 38.49% energy conversion efficiency.
- Nanocrystals and air channels manage heat buildup in the receiver.
- This improves the feasibility of continuous drone flight.
Advancement in Laser-Based Drone Charging
Researchers at the Civil Aviation University of China have made progress in laser-based Over The Air (OTA) charging for drones. Their system achieved an energy conversion efficiency of 38.49%, which is among the highest reported for this technology class. This development aims to reduce or eliminate the need for drones to land for recharging.
System Design and Operation
The charging system utilizes a perovskite laser cell-thermoelectric (PLC-TE) tandem device. This device combines a perovskite layer that converts laser energy into electricity and a thermoelectric layer that recovers heat to generate additional power. The thermoelectric layer's output increases with a greater temperature difference across its sides.
Addressing Thermal Challenges
A significant challenge in laser charging is the heat generated by intense laser beams, which can reach 80 to 90 degrees Celsius, degrading efficiency and potentially damaging the drone. To counter this, the research team incorporated special nanocrystals into the receiver. These nanocrystals act as a thermal barrier due to their poor heat conductivity, protecting the perovskite and thermoelectric layers.
Additionally, air channels were integrated into the drone's wings. As the propellers spin, airflow through these channels helps dissipate excess heat, contributing to the system's thermal management.
Implications for Drone Technology
While the system has not yet undergone outdoor flight tests, this breakthrough is considered a significant step toward practical continuous flight for drones. The research establishes an important foundation for the future development of drones and unmanned aerial vehicles (UAVs), though further challenges such as complex tracking and safety mechanisms still need to be addressed for widespread implementation.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Researchers at the Civil Aviation University of China developed a laser-based drone charging system that converts energy at 38.49% efficiency by using nanocrystalline material and air channels to manage heat. This advancement addresses a key challenge in achieving continuous flight for drones by improving the efficiency and thermal management of over-the-air power delivery.