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Professore Campanella

Guerra in Ucraina, i piani per risolvere la dipendenza dal gas russo

Ucraina, soldati russi lasciano un messaggio sulla lavagna di una scuolaLa mossa di Mosca: reclutare altri 60mila soldati fra i riservistiBucha, il racconto del fotografo: "L'odore dei cadaveri non se ne va"

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Germania, attivato il preallarme del piano di emergenza per il gasI chip fotonici che insegnano alla luce ad evitare gli ostacoli di Askanews   07-12-2023 - 12:35 Link copiato Loading... 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-webkit-box-orient:vertical!important;-webkit-box-direction:normal!important;-ms-flex-direction:column!important;flex-direction:column!important;margin:12px!important}#iubenda-cs-banner .iubenda-cs-opt-group-custom{ -webkit-box-ordinal-group:3;-ms-flex-order:2;order:2}#iubenda-cs-banner .iubenda-cs-opt-group-consent{ -webkit-box-ordinal-group:2;-ms-flex-order:1;order:1}#iubenda-cs-banner .iubenda-cs-opt-group button{ display:block;margin:6px 3px!important;padding:8px 24px!important;text-align:center!important;width:100%!important}#iubenda-cs-banner .iubenda-cs-opt-group button.ts_iub_btn_rjct{ order:2!important}#iubenda-cs-banner .iubenda-cs-opt-group button.ts_iub_btn_pr{ order:3!important}#iubenda-cs-banner .iubenda-cs-opt-group button.ts_iub_btn_ok{ order:1!important}} #speakup-player{ margin: 0 !important; max-width: none !important; min-height: 85px !important; padding-bottom: 25px !important; padding-top: 10px !important;}#speakup-player:empty::after{ align-items: center; background-color: #fff; border-radius: 0.5rem; box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12); font-family: sans-serif; content: 'Loading...'; display: flex !important; font-size: 13px; font-weight: bold; line-height: 1; justify-content: center; min-height: 50px; text-transform: uppercase;}#speakup-player:empty{ display: block;} Milano, 7 dic. (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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