free counter

Windows gain competitive edge over global warming

TSUKUBA, Japan, Sept 1, 2022 – (ACN Newswire) – A French-Japanese research collaboration has fabricated metal nanocomposite coatings that enhance the insulating properties of window glasses. The brand new coating prevents a substantial part of near-infrared (NIR) and ultraviolet rays (UV) from passing through, while at exactly the same time admitting visible light. The findings were reported in the journal Science and Technology of Advanced Materials.

The nanoclusters are dispersed in a PVP matrix that’s then coated on ITO glass to block NIR and Ultra violet rays while letting visible light go through.

“Even though fabrication of a commercial products continues to be quite a distance ahead, our work demonstrated a substantial improvement in UV and NIR blocking properties in comparison to previous research,” says solid-state chemist Fabien Grasset, research director at the French National Centre for Scientific Research (CNRS).

“Buildings take into account a large section of global energy consumption,” explains Grasset, “with a great deal of the annual energy usage of a typical building likely to cooling and/or heating systems to keep indoor temperatures at comfortable levels.” Scientists are searching for methods to develop window glass coatings that may block the entry of NIR radiation in order that buildings, and also cars, can eat less energy to help keep it cool inside. However, this must be done in a manner that still allows visible light to enter. Ideally, harmful Ultra violet rays would also be blocked.

To the end, the international French-Japanese research collaboration fabricated and analysed the performance of nanocomposites predicated on niobium-tantalum cluster compounds containing chloride or bromide ions.

They discovered that chloride-based nanoclusters provided the very best performance when it comes to blocking NIR and Ultra violet rays and allowing the passing of visible light. NIR and UV blocking by the nanoclusters depended on the concentration, dispersion and oxidation state. By tuning these parameters, the team could enhance the nanocluster performance.

The nanoclusters were dispersed right into a polyvinylpyrrolidone (PVP) matrix that has been then coated onto indium-tin-oxide (ITO) glass. The combination increased the transmittance of visible light while reducing that of NIR and Ultra violet rays, in accordance with previous research. “They are very promising coating materials that block probably the most troublesome NIR wavelengths,” says Grasset.

“We’ve an extended history of Japanese-French collaboration,” he continues. “We were already convinced that people are stronger working together by mixing our different cultures and means of thinking. The international LINK project has reinforced this belief. We shall continue steadily to do our far better make further progress towards finding solutions for the global warming problem.”

More info

Fabien Grasset

French National Centre for Scientific Research (CNRS)


Research paper:

About Science and Technology of Advanced Materials (STAM)

Open access journal STAM publishes outstanding research articles across all areas of materials science, including functional and structural materials, theoretical analyses, and properties of materials.

To learn more on STAM, contact

Dr. Mikiko Tanifuji

STAM Publishing Director


News release written by Asia Research News for Science and Technology of Advanced Materials.

Topic:News release summary

Source: Science and Technology of Advanced Materials

Sectors:Science & Nanotech, Science & Research

From the Asia Corporate News Network

Copyright 2022 ACN Newswire. All rights reserved. A division of Asia Corporate News Network.

Read More

Related Articles

Leave a Reply

Your email address will not be published.

Back to top button

Adblock Detected

Please consider supporting us by disabling your ad blocker