{"id":53793,"date":"2019-12-10T00:00:00","date_gmt":"2019-12-09T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/sozdano-bumazhnoe-optovolokno-kotoroe-perevernyot-mir-datchikov-vlazhnosti"},"modified":"2020-02-18T14:01:43","modified_gmt":"2020-02-18T11:01:43","slug":"sozdano-bumazhnoe-optovolokno-kotoroe-perevernyot-mir-datchikov-vlazhnosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/sozdano-bumazhnoe-optovolokno-kotoroe-perevernyot-mir-datchikov-vlazhnosti","title":{"rendered":"\u00c8 stata creata una fibra ottica \u00abdi carta\u00bb che rivoluzioner\u00e0 il mondo dei sensori di umidit\u00e0.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Qualche tempo fa, sulla rivista Cellulose \u00e8 stato pubblicato<\/a><\/noindex> uno studio di scienziati finlandesi che hanno parlato della creazione di fibre ottiche in cellulosa. L'idea di creare strutture fibrose conduttrici di luce \u00e8 emersa per la prima volta nel 1910. Molti decenni dopo, i cavi in fibra ottica sono diventati una realt\u00e0 quotidiana e uno strumento indispensabile per la trasmissione di informazioni energeticamente efficiente su decine di migliaia di chilometri.<\/p>\n

\"\u00c8<\/p>\n

La fibra ottica in cellulosa creata dagli scienziati finlandesi non \u00e8 adatta per scopi di telecomunicazione. L'attenuazione della luce \u00e8 troppo elevata: fino a 6,3 dB al centimetro all'aria per una lunghezza d'onda di 1300 nm. Nell'acqua, l'attenuazione aumentava fino a 30 dB al centimetro. Ma \u00e8 proprio questa caratteristica che si \u00e8 rivelata pi\u00f9 utile. Simili fibre ottiche in cellulosa, grazie alla loro innata capacit\u00e0 di assorbire umidit\u00e0, si riveleranno una soluzione preziosa e pratica per la misurazione dell'umidit\u00e0.<\/p>\n

Il mondo dei sensori intelligenti e degli oggetti connessi a Internet potrebbe ricevere sensori flessibili, estesi e semplici, oltre che efficienti dal punto di vista energetico, per la misurazione dell'umidit\u00e0. Queste soluzioni possono essere integrate nelle fondamenta di edifici e strutture per monitorare l'umidit\u00e0 in strutture monolitiche, ad esempio, per controllare i livelli delle acque di alluvione e sotterranee. L'elettronica indossabile potrebbe essere arricchita con sensori di umidit\u00e0 per il corpo e i vestiti, utili nella vita quotidiana per monitorare lo stato di piccoli bambini e per gli amanti delle attivit\u00e0 all'aperto.<\/p>\n

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\"\u00c8<\/p>\n

Le fibre ottiche in materiali plastici hanno gi\u00e0 conquistato una nicchia di sensori per la raccolta di dati sismici, incluso anche il monitoraggio del traffico urbano<\/a><\/noindex> e soprattutto dei rumori forti nelle strade delle citt\u00e0 (spari, suoni di incidenti e simili). Con l'arrivo delle fibre ottiche in cellulosa, il campo d'uso di cavi ottici flessibili, termicamente resistenti e robusti si espander\u00e0 al monitoraggio dell'umidit\u00e0, cosa che le fibre ottiche in plastica non possono fare in linea di principio.<\/p>\n

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Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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