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Photonic Crystal Sail Could Enable Fuel-Free Space Travel
Tuskegee University researchers developed a photonic crystal light sail that reflects laser light with 90% efficiency while staying cool, potentially enabling interplanetary travel without fuel.
Key Takeaways
- Photonic crystal sail achieves 90% reflectivity while remaining transparent to sunlight for thermal management
- Nanoscale germanium-polymer structures create tunable wavelength-selective reflection
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DT Editorial AI··5 min read·via interestingengineering.com