Did your TV win this year’s Nobel Prize in Chemistry?

If you have a TV that, when you turn it on, feels like you’re “acting” in the movie or series you’re watching (the colors are “vivid”), that probably includes the discovery that won this year’s award. Nobel Prize in Chemistry.

They are the Quantum dots.

Before we see what this is all about, let’s deal with some background information.

How do our screens produce light and colors?

In all cases, the ability to create a wide range of colors on displays is achieved by manipulating the intensity of the always-on backlight and the combination of the primary colors: red, green and blue.

the LCD screens (LCD) has White backlight (usually LED – light emitting diodes) that illuminate through a Liquid crystal layer.

Liquid crystals themselves do not emit light.

Instead, they act as “window shutters.” When an electric current is applied to A pixel (a word preceded by an image and an object and is translated as a pixel – the smallest unit in a digital image or graphic that “gives” what is displayed on the screen), changes the direction of the liquid crystals, allowing or blocking light from the backlight.

the Color filters Used to create red, green, and blue subpixels. By controlling the intensity of sub-pixels, different colors are produced.

the LED screens (LCD TV type), they use the LCD backlight. They rely on the same liquid crystal technology to control the passage of light. But instead of a single white backlight, they use a series of LEDs placed behind the screen.

Local dimming and color mixing techniques can be used to improve color accuracy and contrast.

the OLED screens (Organic Light Emitting Diodes) are known for their rich, vibrant colors. It has millions of pixels. Each is composed of organic compounds that emit light when an electric current is applied.

They are “emissive” displays, which means that each pixel produces its own light. This allows for true black levels and excellent color accuracy.

Each pixel in an OLED display can independently emit red, green and blue light, allowing precise color control.

With the Quantum dots Which is found on QLED delusion New QLED In screens, things are much simpler, since their small size gives them “room” for more LEDs and thus better color and brighter effect.

TI EINAI OI KBANTIKES KUKIDES

Some TVs already on the market contain a quantum dot filter Reproduces color, depending on its display.

A seven-nanometer-wide quantum dot turns light into red, a five-nanometer-wide quantum dot turns light into green, and a three-nanometer-wide quantum dot turns light into blue light.

The quantum dot filter is increasingly being used because it is excellent at reproducing colors more accurately than traditional LED-LCD and OLED TVs.

It enhances the brightness and color accuracy offered by LCD TVs that contain it.

The same discovery helps biochemists and doctors map biological tissue when they remove tumor tissue.

Quantum dots are nanoparticles (nanocrystals) with special electrical and optical properties. Discovered and created by Mongee Boundy From the Massachusetts Institute of Technology, and Louis Bruce From Columbia University and Alexey Ekimov From the American company Nanocrystals Technology, winner of this year’s Nobel Prize in Chemistry.

As mentioned in press release “They are nanoparticles, so small that their size determines their properties. Get the information that a nanometer is a billionth of a meter.

Anyone who studies chemistry learns that the properties of an element are governed by the number of electrons it has. However, when matter shrinks to the nanoscale, quantum effects arise, which are governed by the size of the material.

The winners of the 2023 Nobel Prize in Chemistry have succeeded in producing particles so small that their properties are determined by quantum effects.

Particles, called quantum dots, are now of great interest in nanotechnology.

Johan Akvist, Chairman of the Nobel Committee for Chemistry, said:Quantum dots have many wonderful and unusual properties. Most importantly, they have different colors depending on their size».

How quantum dots were assembled, something that for years was thought to be impossible

Physicists have long known that, theoretically, size-dependent quantum effects can occur in nanoparticles. However, its formation was almost impossible.

Always in accordance with the press release published on the Nobel website.”In the early 1980s, Alexei Ekimov was able to create quantum effects Depends on the size in the stained glass.

The color came from copper chloride nanoparticles, and Ekimov showed that particle size affects the color of the glass through quantum effects.

After a few years, Louis Bruce was the first scientist in the world to demonstrate size-dependent quantum effects in particles That float freely in the liquid.

In 1993, Monge Boundy revolutionized the chemical production of quantum dots, producing near-perfect particles. This high quality was essential for its use in applications.

The researchers believe that quantum dots could contribute in the future to flexible electronics, small sensors, thin solar cells and encrypted quantum communications.

Which TVs have quantum dots?

LED-LCD displays that use quantum dot filters are called QLED, QNED, Quantum, or miniLED TVs.

The OLED displays that use them are called QD-OLED TVs.

Now you can understand the differences in prices, and as is usually the case with technology, they depend on the research made and discoveries – for which Nobel Prizes are sometimes awarded.