Thursday 25 April 2019


Scientists from Dagestan create conductive ink with silver nanoparticles

27 March 2019 06:40 Posted in:  SOCIETY
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Makhachkala, March 27, 2019. Dagestan scientists were the first to be able to fully use the silver nanoparticles in the ink, creating a formula that increases the electrical conductivity of the ink. It allows to use ink for printing electronic circuits, the press service of Dagestan Scientific Center of the Russian Academy of Sciences (RAS) reported on Monday.

The report states that silver-based conductive ink was created in the XIX century. However, the composition could contain only the particles of silver that mainly remained unused, making the production unprofitable.

"The merit of our scientists is that for the first time they managed to use silver in ink in full. When printing, the liquid components evaporate quickly, leaving a thin metallic layer on the surface. The new silver ink is a clear solution of silver acetate and ammonia. Silver remains in solution until as long as it is printed on the substrate. After the solution evaporates, the formed tracks become electrically conductive" - the report runs.

According to the Center officer, the smallest particles, no more than 100 nanometers, are included in the new composition. The creation of ink on the basis of particles of this size takes several minutes, while the manufacture of the existing paint took several hours.

"The new silver inks have another very important key advantage – the low processing temperatures. They start to demonstrate their electrical conductivity after annealing at a temperature of 90 degrees Celsius" the press service official added. It is reported that silver electrodes printed with new ink have already shown the high conductivity.

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