Quinta-feira, Julho 05, 2007

Geradores minúsculos para substituir baterias

Cientistas da Universidade de Southhampton desenvolveram, com sucesso, um minúsculo gerador para alimentar pequenos dispositivos, em substituição às tradicionais baterias. A principal aplicação do gerador é vista especialmente para casos em que o procedimento para substituição das baterias seja praticamente impossível.
Ele será inicialmente testado com sensores sem fio, antes de ser aplicado em áreas mais importantes com a alimentação de marca-passos. Os resultados dos testes mostraram que este gerador é 10 vezes mais eficiente do que dispositivos similares, apesar de suas dimensões, tão minúsculas, não atingirem um centímetro cúbico. O gerador trabalha utilizando vibrações ocorridas ao seu redor de tal forma a fazer com que ímãs sobre uma estrutura no interior do dispositivo funcionem em zigue-zague, gerando, assim, a energia necessária. Os cientistas acreditam que este gerador poderá ter múltiplas aplicações na área de implantes médicos onde seja necessária alimentação própria de energia.

 
 

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