Researchers produced a paste material with electrical conductivity

A team of scientists working on a batch of lab materials has made a breakthrough by identifying a type of conductive paste that could shape a new generation of electronic devices. .

BingMag.com Researchers produced a paste material with electrical conductivity

A team of scientists working on a batch of lab materials has made a breakthrough by identifying a type of conductive paste that could shape a new generation of electronic devices. .

This innovation is kind of like a play dough that has the ability to conduct and at the same time it can be easily shaped into the desired shape. Thus, this material combines two properties in a way that seems to contradict a theoretical explanation.

Materials such as aluminum, copper or other metals that conduct electricity have some properties in common. They consist of regular rows of atoms or molecules arranged in a rigid configuration; What was thought to be necessary for the free movement of electrons in materials.

Jiaze Xie, a researcher at the University of Chicago, however, investigated other possibilities. He was experimenting with materials based on molecular strings made of carbon and sulfur interlaced with nickel atoms, and he came up with unexpected results. Surprisingly, this material was a very efficient conductor of electricity and was able to maintain its performance in a wide range of unfavorable conditions. (Nature), said: "We heated this material, cooled it, exposed it to air and moisture, and even poured acid and base on it, and nothing happened."

BingMag.com Researchers produced a paste material with electrical conductivity

The molecular structure of a substance; Nickel atoms are shown in green, carbon atoms in gray and sulfur atoms in yellow.
Credit: Xie et al

The conductivity of this material appears to contrast with its disordered molecular structure. . After experiments and simulations, the researchers believe that this behavior is due to a lasagna-like structure in which the material forms layers like lasagna sheets, allowing electrons to move both horizontally and vertically, even When those layers are not aligned.

"John Anderson" (John Anderson), the senior author of the study, also said about the results: "From a fundamental point of view, it cannot be a metal, and there is no solid theory to explain it. According to scientists, this conductive material is unprecedented in terms of flexibility and electrical conductivity. Anderson likens it to conductive play dough that can be dipped into a desired location to conduct electricity.

Through chemical experiments, scientists have been able to create conductors from organic materials that are easier to process and They are flexible, but their conductivity usually decreases at high temperatures or when exposed to moisture. Now with the ability to withstand these factors, scientists believe they have created the foundation for a new class of conductive materials. "Essentially, this has led to the design of a whole new class," Anderson said. It is made of conductive materials that are easy to shape and are very resistant in everyday conditions. /li>

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  • Another practical feature of the new material is that unlike metals or materials Common conductors that need to be melted into shapes suitable for various electronic devices, this material can be made at room temperature. The team hopes to further expand the material's capabilities by testing different shapes and functions.

    As Xie noted, "We think we can make it two-dimensional or three-dimensional, make it porous, or Even by adding different nodes or links, we can introduce other functions to it."

    Graphic design of the structure of the new malleable conductive material
    Credit: Frank Wegloski

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