Pequeños metajets podrían dirigir velas solares para viajes interestelares

Investigadores han desarrollado dispositivos minúsculos que utilizan la luz para controlar el movimiento en múltiples direcciones, lo que supone un avance para las naves espaciales propulsadas por luz. Los metajets, fabricados de silicio, fueron probados en un entorno de laboratorio y mostraron resultados prometedores para dirigir grandes velas a través del espacio. Este avance podría ayudar a superar las limitaciones actuales en la dirección de tales naves a través de grandes distancias.

Científicos de la Universidad de Texas A&M crearon el metajet, una pequeña oblea de silicio de aproximadamente 0,01 milímetros de diámetro. Cuenta con una metasuperficie con pilares microscópicos que refractan la luz para generar un impulso controlado. Esto permite que el dispositivo se mueva tanto vertical como horizontalmente, a diferencia de las velas solares tradicionales que dependen principalmente de la reflexión.

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