Nanopropulsores podem direcionar velas solares para viagens interestelares

Pesquisadores desenvolveram dispositivos minúsculos que utilizam luz para controlar o movimento em múltiplas direções, avançando o potencial de naves espaciais movidas a luz. Os nanopropulsores, feitos de silício, foram testados em laboratório e mostraram resultados promissores para manobrar grandes velas pelo espaço. Esse avanço pode ajudar a superar as limitações atuais na direção dessas embarcações em longas distâncias.

Cientistas da Texas A&M University criaram o nanopropulsor, uma pequena lâmina de silício com cerca de 0,01 milímetros de largura. O dispositivo possui uma metassuperfície com pilares microscópicos que refratam a luz para gerar momento controlado. Isso permite que o dispositivo se mova tanto vertical quanto horizontalmente, ao contrário das velas solares tradicionais que dependem principalmente da reflexão.

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