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~ LCD Tenaga Cahaya

Alpen Steel | Renewable Energy


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~ LCD Tenaga Cahaya


LCD Bertenaga Cahaya Ditemukan

UCLA Engineering

 
LCD Bertenaga Cahaya
 
Para peneliti dari UCLA menemukan teknologi yang memungkinkan monitor LCD ditenagai listrik yang didapat dari cahaya di sekitar, termasuk cahaya matahari dan cahaya (backlight) yang dikeluarkan LCD itu sendiri.

Teknologi ini dinamai photovoltaic organic polarizers, bertujuan untuk meningkatkan efisiensi energi pada monitor LCD. "Polarisator ini juga bisa digunakan untuk mengumpulkan cahaya di dalam dan luar ruangan," kata Yang Yang, profesor bidang materials science dari UCLA. "Jadi pada saat di pantai misalnya, kita bisa mengisi baterai ponsel dengan cahaya matahari."

Saat ini monitor LCD banyak digunakan di berbagai perangkat elektronik seperti TV, komputer, dan telepon genggam. Teknologi LCD bekerja dengan menggunakan dua lembar polarisator yang mengapit molekul-molekul kristal yang berfungsi sebagai katup cahaya. Formasi tersebut memungkinkan lolosnya sejumlah cahaya dan membentuk gambar di layar. 

Menurut para peneliti, teknologi polarisator yang dipakai saat ini tidak hemat energi. Cahaya backlight bisa memakan nyaris 80 sampai 90 persen energi listrik dari perangkat, dan sekitar 75 persennya hilang karena polarisator. Dengan teknologi yang baru, sel polarizing organic photovaltaic mampu mengumpulkan energi yang terbuang dan mengubahnya kembali menjadi listrik.

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