New ways to make metal thin films cheap enough to make you think

Researchers at the University of British Columbia in Canada have discovered a new method of making high-tech materials that anyone can use at a local hardware store. This discovery can be applied in many fields, from hydrogen production to the development of flexible consumer electronics products.

This technology uses a simple heating lamp that costs only around 10 Canadian dollars to form a thin layer of conductive metal coating on top of glass, plastic, metal, and other materials. Curtis Berlingert, a professor of chemistry at the University of British Columbia, said that this would be a very cheap and easy way to make important materials. Scientists had previously expected this "offbeat" method to be effective only for certain substances, but the result was pleasantly surprised to find that the method was effective for almost every kind of test metal.

Older technologies require not only expensive chemicals and UV lamps that produce energy, but also clean spaces without dust and other contaminants. In the new process, only the metal salt is blasted with the heat lamp in a short time. Researchers say it is difficult to estimate how cheap this new method is, but at least an order of magnitude cheaper.

In addition to the cost, another advantage of this technology is that a conductive coating can be formed on the basis of a non-melting plastic substrate, which means that it can be applied in fields such as smart textiles and flexible smartphones. Researchers hope that the discovery can lead to more efficient methods of electrolytic hydrogen production, or to so-called electrochromic windows where the glass becomes darker or more opaque when voltage is applied.

The researchers believe that this method is suitable for large-scale manufacturing and intends to apply for a patent for this discovery. However, the new method is still inferior to the old method in some applications, and there are still many problems to be solved including the optimum temperature range of the hot lamp and the unique properties of the resulting coating. (Reporter Feng Weidong)

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