Using the principle behind coffee ring effect in quantum dot arrays

If spilled coffee is not immediately wiped off, it leaves behind a stain where the edges are darker than the rest. This phenomenon is called the coffee ring effect. Using this principle, a POSTECH research team has recently developed a new method for arranging quantum dots (QDs) which are nanosized semiconducting crystals. This new simple method facilitates the development of display panels with up to 20 times higher resolution than the conventional ones.

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