Con frecuencia, a la tecnología le lleva muchos años abrirse paso del laboratorio a los hogares de la gente común. Sin embargo, en el caso de la tecnología Quantum Dot con la que cuentan los televisores Samsung QLED, sólo transcurrieron cerca de 30 años para que esto sucediera. Parece mucho tiempo, pero es realmente poco si no conocemos los antecedentes históricos.
En realidad, la historia de los puntos cuánticos no es tan breve. Se remonta a muchos años atrás, hasta la creación de las ventanas de vitrales — en el siglo I d.C. Es así que los humanos hemos estado aprovechando el poder de las nanopartículas — elemento central de los puntos cuánticos que acciona las imágenes sorprendentes del televisor QLED — durante mucho, pero mucho tiempo. Retrocedamos y veamos uno de los ejemplos más antiguos: las majestuosas ventanas de vitrales que datan del siglo I d.C.
¿Cómo funcionan los vitrales?
Los vitrales han existido por más de 1000 años— ¡definitivamente mucho más que el televisor QLED! En especial, los vitrales se usaban como medio de expresión artística, que se encontraba comúnmente en las iglesias europeas, durante la Edad Media. Los artistas medievales que incursionaban en la alquimia mezclaban el cloruro de oro y plata con vidrio fundido, para crear tintes rojos y amarillos que brillaban espectacularmente con la luz del sol. Cuando la luz tocaba el vitral, las nanopartículas de cloruro actuaban como puntos cuánticos, reflejando una magnífica variedad de luces rojas y amarillas en esa zona del espectro de colores.
Entonces, ¿qué tiene que ver eso con el televisor QLED?
Bueno, las creaciones sensacionales de vitrales que se encuentran en las catedrales europeas, son uno de los primeros ejemplos de la aplicación de nanopartículas similares a los puntos cuánticos por artistas humanos. Los óxidos y cloruros metálicos que se encuentran en los vitrales reaccionan con la luz de una manera similar a la de los puntos cuánticos. 1 Dichas nanopartículas tomaron un papel fundamental en la creación del fascinante efecto de estas obras clásicas de arte. Y las mismas nanopartículas — aunque mejoradas — se encuentran en las pantallas de los televisores QLED, brindando las imágenes vívidas con las que la nueva línea de Samsung está siendo reconocida.
Cómo trabajan los puntos cuánticos y cuáles son sus efectos
Mucho después de que los artistas alquimistas medievales descubrieran el método de incorporar químicamente cloruros en el vidrio, los científicos modernos empezaron a descubrir un fenómeno relacionado, casi por accidente. Al fracturar materiales con propiedades semiconductoras en partículas nanométricas — sólo ligeramente mayores que las moléculas de agua — se descubrieron otras propiedades interesantes. El tamaño ajustado de las partículas afecta el color de la emisión de luz, como resultado del cambio en la energía de banda prohibida. De este modo, al controlar el tamaño de un punto cuántico con incrementos diminutos, el espectro de colores puede expresarse en forma más plena y pura.
¿No es sorprendente que el proceso para controlar las nanopartículas para que produzcan colores asombrosos se haya refinado tanto, que ahora podamos encontrar puntos cuánticos en un televisor moderno? Hoy podemos apreciar imágenes impresionantes gracias a los puntos cuánticos de los televisores QLED, tanto como en las increíbles luces de los paneles de vitrales en las catedrales más importantes del mundo.
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When he was about to reach the top ten, he stood up and immediately went to the technical department to ask if there were any data anomalies or ticket fraud.Every once in a while, the results of Breaking the Sky are broadcast.
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Before entering the elevator, Lin Xia heard some whispers.finally She closed her eyes. End of chapter January 15th.
I did any kind of work in order to survive, and I also suffered setbacks.It s just that the fire was relatively big and he was caught Before When Liwei started his business, he did a lot of shady things.
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He said those two words lightly. That man once lived in society.At this moment, there was an annoying, harsh horn sound nearby.
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You can only use fire attribute magic weapons. This is not because your craftsmanship in refining weapons, Zhenjun, is unprecedented and unparalleled.When Yun Shang heard this, he was not comforted, but instead aroused the desire to win in his heart.
You have won ten games, so you should be satisfied With that, Lu Yantong winked at Lu Yanxin, and the two of them were about to step down.Don t show it off in front of others if you have nothing to do.
Think I just want to ask you if you have any news about my mother recently.Well, I came here after returning to the sect. However, Tianyan Sect has been warned by its ancestor not to interfere in the Lu family s affairs.
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I will find a good family again. Jiang Yuebai was shocked and suddenly stood up and walked away from the woman.Jiang Yuebai jumped back for fear of stepping on it.
There is a happy event today. If grandpa is still here, he will be happy.Go in. Li Jiuchuan, with a bit of fatigue on his brows, was sitting at the long table drinking tea.
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Early the next morning, Lin Jingyue, wearing a Ye Shiming robe, with her long hair disheveled, appeared at the case I made a palace lantern with my own hands before.We will meet you at the entrance of the Huaxi Valley tomorrow.
He has four more spiritual roots worth nine than him.
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Halfway through the swim. Sudden They are getting angry Before Lin Beichen could react
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Lin Beichen looked confused, and the arc in his hand completely disappeared at this moment because there was no follow up supplement.
As early as Lin Beichen s journey here, his every move was transmitted here through the monitoring equipment, and they could see it clearly.While he was encouraging himself. The scene in the cabin is about to get out of control At this time, the flight attendants walked out from behind the curtain holding the grab handles on the seat backs with professional smiles on their faces.
Just like if you keep staring at a Chinese character, you will find that you gradually don t recognize the character.He swayed back and forth in a controlled manner and rolled his eyes constantly.
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Beep beep beep The sound of pressing the digital button echoed clearly in the extremely quiet gymnasium.It can only be said that he scored 750 points in the exam, not only 750 points in the exam, but only 750 points in the college entrance examination for him to take I m sorry, I apologize.
Not only so that he would no longer be questioned by his parents, but also because he wanted to figure out the problems that troubled him and needed a quiet and independent space to think.The protagonist of this story is actually the famous Qing Dynasty Taoist priest Liu Yiming.
high This value simply shouldn t be too high They took it for granted that Lin Beichen s physical strength would be very strong, but they didn t expect it to be so strong This is equivalent to meaning that Lin Beichen s body is no longer comparable to steel before, but a real steel plate And
it s not just ordinary thin steel. It is similar to the strength of a two to three centimeter thick steel plate used to make safes.
Even if she did, Master can t sue her as soon as he comes back, right As soon as one foot crossed the threshold, Jiang Yuebai saw True Lord Canghuo s eyes light up and he jumped up from his chair.She had time to practice the remaining 7 Powerful Tea Bags for Weight Loss You Need to Try for Better Health
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My surname is aunt, my surname is grandma Jiang Yuebai shot down, and the dragon s teeth hit hard.He continued to calcine Poyun Chong with the true fire of the phoenix, and used the dragon scale dagger to carve the talisman array again.
After sorting out his belongings, Jiang Yuebai walked out of the cave.Crash Dozens of blood red and sticky demon pills were smashed from the head, still steaming and carrying pieces of flesh.
I am stingy, so I have never given it to you. Now you put it away.They were powerful and glaring at them. Jiang Yuebai blinked, turned around and ran away, dragging his spear.
As long as they are busy, they have no time to think.Jiang Yuebai ignored the beads for the time being and put the puppet blueprint and the face of the Eight Armed King Kong into the storage bracelet.
The roar of the roaring dragon shook the sky, the floor and surrounding tables and chairs were thrown away and crushed, and the tip of the spear was pointed directly at Qingnangzi Mike Pompeo Weight Loss: Shedding Pounds in the Political Spotlight
s throat.Yours sincerely, Yuebai
Respectfully, with great hope I hope you will forgive me for taking the liberty of writing this letter.
He folded his arms and looked at him from a distance.It is difficult to completely eliminate those ice demons.
The demons still exist on the periphery of the heavenly spirit world.If he was not a stranger, I m afraid those old guys from the Fang family would have taken him up immediately.
Elder Taishang said that she would find a way to communicate with the Big Dipper Alliance to see if we could leave, but she said that it was unlikely, so we should not be anxious and just stay in the Azure Dragon Realm to practice for a while.
Con frecuencia, a la tecnología le lleva muchos años abrirse paso del laboratorio a los hogares de la gente común. Sin embargo, en el caso de la tecnología Quantum Dot con la que cuentan los televisores Samsung QLED, sólo transcurrieron cerca de 30 años para que esto sucediera. Parece mucho tiempo, pero es realmente poco si no conocemos los antecedentes históricos.
Los vitrales han existido por más de 1000 años— ¡definitivamente mucho más que el televisor QLED! En especial, los vitrales se usaban como medio de expresión artística, que se encontraba comúnmente en las iglesias europeas, durante la Edad Media. Los artistas medievales que incursionaban en la alquimia mezclaban el cloruro de oro y plata con vidrio fundido, para crear tintes rojos y amarillos que brillaban espectacularmente con la luz del sol. Cuando la luz tocaba el vitral, las nanopartículas de cloruro actuaban como puntos cuánticos, reflejando una magnífica variedad de luces rojas y amarillas en esa zona del espectro de colores.
Cómo trabajan los puntos cuánticos y cuáles son sus efectos
¿No es sorprendente que el proceso para controlar las nanopartículas para que produzcan colores asombrosos se haya refinado tanto, que ahora podamos encontrar puntos cuánticos en un televisor moderno? Hoy podemos apreciar imágenes impresionantes gracias a los puntos cuánticos de los televisores QLED, tanto como en las increíbles luces de los paneles de vitrales en las catedrales más importantes del mundo.