Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the chaty domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Deprecated: Return type of Recursive_ArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 76

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Deprecated: Return type of Recursive_ArrayAccess::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 202

Warning: Cannot modify header information - headers already sent by (output started at /home1/express/public_html/wp-includes/functions.php:6131) in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-emd-wp-session.php on line 134

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علماء من اليابان يطورون عدسات لاصقة ذكية - Algerian Express

علماء من اليابان يطورون عدسات لاصقة ذكية


Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /home1/express/public_html/wp-content/themes/jannah/framework/functions/post-functions.php on line 761

طوَّر باحثون في جامعة توهوكو اليابانية نوعاً جديداً من العدسات اللاصقة الذكية تمنع جفاف العيون، حيث يحافظ نظام الترطيب الذاتي، الموصوف في دراسة نشرت في مجلة “أدفانسد ماتيريال تكنولوجي” في نوفمبر 2019م، على طبقة من السائل بين العدسات اللاصقة والعين باستخدام آلية جديدة.

موضوع يهمك?توقعت الحكومة الإيطالية ارتفاع العجز العام إلى 10,4% من إجمالي الناتج المحلي وارتفاع الدين العام إلى 155,7% عام 2020…ميزانية إيطاليا تكشف تأثيراً صادماً من كورونا ميزانية إيطاليا تكشف تأثيراً صادماً من كورونا اقتصاد
والعدسات اللاصقة الذكية هي أجهزة يمكنها تحسين الرؤية بما يتجاوز القدرات البشرية الطبيعية. وقد طُورت مؤخراً لتلاقي مجموعة واسعة من التطبيقات التي تتراوح بين تصحيح الرؤية لدى الأشخاص الذين يعانون من بعض المشكلات، إلى عرض الواقع المعزِّز. وكما يقول البروفيسور ميتسوهيكو نيشيزاوا، المهندس بجامعة توهوكو في اليابان، ومطور هذا المنتج: “فرغم وجود عديد من التطورات الحديثة في الوظائف الجديدة للعدسات اللاصقة الذكية، لم يتحقق تقدُّم كبير في حل السلبيات المرتبطة بارتداء العدسات اللاصقة يومياً”، إذ إن واحدة من أكبر المشكلات التي تواجه العدسات اللاصقة هي أنها يمكن أن تسبب “متلازمة العين الجافة”، بسبب انخفاض حركة رمش العين التي تؤدي إلى زيادة تبخر الرطوبة. وقد تؤدي هذه المتلازمة إلى جروح والتهاب في القرنية، وأيضاً إلى الشعور بعدم الارتياح لدى من يستعملونها. ولمعالجة هذه المشكلة الكبيرة، طوَّر الباحثون هذه الآلية الجديدة للحفاظ على رطوبة العدسة.

يستخدم النظام الجديد تدفق “التناضح الكهربائي”، أو حركة الأيونات في بيئة سائلة من خلال قنوات ضيقة للغاية، تجعل السائل يتدفَّق عند تطبيق جهد كهربائي عبر سطح مشحون. ففي هذه الحالة، يؤدي التيار المطبق على هيدروجيل إلى تدفق السائل من الخزان المسيل للدموع المؤقت للشخص، الموجود خلف الجفن السفلي، إلى سطح العين في الأعلى.

يقول نيشيزاوا: “هذا هو أول دليل على أن تدفق “التناضح الكهربائي” في العدسات اللاصقة اللينة يمكنه أن يبقي العدسة رطبة”.
كما استكشف الباحثون أيضاً إمكانية استخدام مصدر طاقة لاسلكي للعدسات اللاصقة. واختبروا نوعين من البطاريات، بطارية من المغنيسيوم والأكسجين وخلية وقود أنزيم الفركتوز – الأكسجين، وهذا النوع من البطاريات معروف أنه غير سام للخلايا الحية. وأظهروا أنه يمكن تشغيل النظام بنجاح بواسطة هذه البطاريات الحيوية التي يمكن تركيبها مباشرة على العدسات اللاصقة المشحونة.

المصدر: مجلة القافلة

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