Guerra in Ucraina, Biden incontra Draghi al G7: “Impegno condiviso contro la Russia”

Biden firma la legge sullo stop al commercio ed alle importazioni di energia dalla RussiaI chip fotonici che insegnano alla luce ad evitare gli ostacoli di Askanews   07-12-2023 - 12:35 Link copiato Loading... 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(askanews) - Chip fotonici in grado di calcolare, e generare, la forma migliore dei fasci di luce per attraversare un ambiente ostile, variabile o non conosciuto. Sono stati realizzati dal Politecnico di Milano, grazie a uno studio condotto insieme con la Scuola Superiore Sant'Anna di Pisa, all'Università di Glasgow e all'Università di Stanford, e pubblicato dalla prestigiosa rivista Nature Photonics. Ma perché calcolare la forma della luce è così fondamentale e rende questi chip tanto innovativi? Francesco Morichetti, responsabile del Photonoic devices Lab del Polimi."Viviamo in un mondo wireless, tutti i dispositivi sono senza fili e vorremmo che scambiassero la maggior quantità di dati, il wireless ottico è in grado di supportare una quantità di dati 100, 1000 volte maggiore del wirelss ordinario, la luce è molto più sensibile a condizioni ambientali quindi se vogliamo avere collegamenti wireless ottici a banda larghissima dobbiamo essere in grado di modificare e adattare al meglio la forma e le caratteristiche della luce". Queste tecnologie permettono di manipolare in modo estremamente efficiente una enorme quantità di dati, fondamentale in moltissime applicazioni: telecomunicazioni, intelligenza artificiale e localizzazione, ad esempio per guida autonoma, droni, sistemi che richiedono grandi capacità di calcolo come i computer quantistici.Ma cosa aspettarsi in futuro dai dispositivi fotonici? Andrea Melloni, direttore di Polifab, centro di micro e nanotecnologie del Politecnico."Continueranno in questa direzione, ma stanno penetrando in tutte le altre applicazioni: oggi troviamo dispositivi fotonici per biomedicale, sensoristica, finanza, agricoltura e molti altri settori: si ha un vantaggio in termini di potenza di calcolo, capacità di trasmettere informazioni ad altissima banda, e la possibiltià di farlo consumando poca energia elettrica, che oggi è fondamentale".La progettazione di questi chip, possibile grazie a finanziamenti di aziende, Ue e Pnrr, è fatta internamente. I chip in tecnologia di silicio standard vengono fabbricati in una fonderia e poi tutta la parte di assemblaggio viene fatta su misura nella camera bianca del Politecnico di Milano. di Askanews   07-12-2023 - 12:35 Link copiato Commenti Leggi la Netiquette

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