Liquid crystal cable for current transmission. Free Technical Library News

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Liquid crystal current transmission cable

08.10.2019

Researchers from the Institute of Organic Chemistry at the Johannes Gutenberg University of Mainz (JGU, Germany) have synthesized new liquid crystals that can serve as a material for a liquid crystal "cable" and provide targeted transmission of electricity in electronic components.

Liquid crystals are a phase state of a substance that occupies an intermediate position between the solid and liquid states. In a liquid, the molecules "float" randomly, and in liquid crystals they are arranged in a certain order, as in ordinary crystal lattices, but the material still remains liquid. Such crystals are used in TV screens, smartphones and calculators.

Researchers from the Institute of Organic Chemistry at the Johannes Gutenberg University of Mainz have found another use for this liquid crystal substance - the transmission of current.

“If you cool our liquid crystal materials slowly, the molecules will self-assemble into columns,” explained Professor Heiner Detert of JGU. “We can think of these columns as many layers stacked one on top of the other. that these columns conduct electrical energy along their entire length." While most materials conduct positive charges, liquid crystal molecules conduct electrons. An additional advantage of the liquid crystal "cable" is that if it breaks, it will fully recover on its own.

The researchers found a particularly interesting effect that appears in their synthesized molecules: if one molecule is exposed to ultraviolet light, it begins to glow in response. If you add a few more to it, the effect disappears, and reappears when the number of molecules continues to increase. If the molecules are suspended in a solvent (that is, made into a liquid mixture with solid particles evenly distributed in the liquid) or placed on a film, they will glow in different colors when exposed to ultraviolet light.

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