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Il procedimento per indurire le superfici di vetro presentato dal professore Kok-Wai Cheah, dell'Università battista di Hong Kong, ha ottenuto il Gran premio del 44mo Salone delle invenzioni di Ginevra.
Il metodo consiste nell'applicare una pellicola di zaffiro, uno dei materiali più duri in natura, su vetro o quarzo. Si garantisce così un alto tasso di resistenza senza, nel contempo, alterare la trasparenza. Per quanto riguarda la vita di tutti i giorni, ne potranna trarre vantaggio, ad esempio, gli schermi dei telefonini o i quadranti degli orologi.
Riconoscimenti sono andati ad altre 45 innovazioni tra le migliaia presentate.
ATS/dg
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