{"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\/fr\/blog\/news\/sozdano-bumazhnoe-optovolokno-kotoroe-perevernyot-mir-datchikov-vlazhnosti","title":{"rendered":"Un \u00ab papier \u00bb en fibre optique a \u00e9t\u00e9 cr\u00e9\u00e9, qui va r\u00e9volutionner le monde des capteurs d'humidit\u00e9","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Il y a quelque temps, la revue Cellulose a publi\u00e9 publi\u00e9<\/a><\/noindex> une \u00e9tude men\u00e9e par des chercheurs finlandais qui ont parl\u00e9 de la cr\u00e9ation de fibres optiques \u00e0 partir de cellulose. L'id\u00e9e de cr\u00e9er des structures fibreuses conductrices de lumi\u00e8re a vu le jour pour la premi\u00e8re fois en 1910. Des dizaines d'ann\u00e9es plus tard, les c\u00e2bles \u00e0 fibre optique sont devenus une r\u00e9alit\u00e9 quotidienne et un moyen indispensable de transmission d'informations \u00e9nerg\u00e9tiquement efficaces sur des dizaines de milliers de kilom\u00e8tres.<\/p>\n

\"Un<\/p>\n

Les fibres optiques en cellulose, d\u00e9velopp\u00e9es par des chercheurs finlandais, ne conviennent pas aux applications de t\u00e9l\u00e9communications. L'att\u00e9nuation de la lumi\u00e8re y est trop importante \u2014 jusqu'\u00e0 6,3 dB par centim\u00e8tre \u00e0 l'air libre pour une longueur d'onde de 1300 nm. Dans l'eau, l'att\u00e9nuation augmentait jusqu'\u00e0 30 dB par centim\u00e8tre. Mais c'est pr\u00e9cis\u00e9ment cette caract\u00e9ristique qui s'est r\u00e9v\u00e9l\u00e9e la plus recherch\u00e9e. De telles fibres optiques en cellulose, gr\u00e2ce \u00e0 leur capacit\u00e9 intrins\u00e8que \u00e0 absorber l'eau, repr\u00e9senteront une solution pr\u00e9cieuse et pratique pour la mesure de l'humidit\u00e9.<\/p>\n

Le monde des capteurs intelligents et des objets connect\u00e9s \u00e0 Internet pourrait b\u00e9n\u00e9ficier de capteurs flexibles, longs, simples et \u00e9co\u00e9nerg\u00e9tiques pour mesurer l'humidit\u00e9. Ces solutions pourraient \u00eatre int\u00e9gr\u00e9es dans les fondations des b\u00e2timents et des structures pour contr\u00f4ler l'humidit\u00e9 dans des structures monolithiques, par exemple pour surveiller les niveaux d'eau des crues et des nappes phr\u00e9atiques. L'\u00e9lectronique portable pourrait \u00eatre enrichie de capteurs d'humidit\u00e9 pour le corps et les v\u00eatements, utiles dans la vie quotidienne pour suivre l'\u00e9tat des jeunes enfants et pour les amateurs d'activit\u00e9s de plein air.<\/p>\n

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\"Un<\/p>\n

Les fibres optiques en mat\u00e9riaux plastiques ont d\u00e9j\u00e0 investi le cr\u00e9neau des capteurs pour la collecte de donn\u00e9es sismiques, y compris m\u00eame la surveillance du trafic urbain<\/a><\/noindex> et des bruits particuli\u00e8rement forts dans les rues des villes (tirs, bruits d'accidents et autres). Avec l'\u00e9mergence des fibres optiques en cellulose, le domaine d'utilisation des c\u00e2bles optiques flexibles, thermiquement r\u00e9sistants et robustes s'\u00e9largira pour inclure la surveillance de l'humidit\u00e9, ce que les fibres optiques plastiques ne peuvent pas faire.<\/p>\n

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

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