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News > Nissan showcase new acoustic meta-material at CES trade show

Nissan showcase new acoustic meta-material at CES trade show

At this year’s CES trade show in Las Vegas Nissan will showcase a new material that can help make a car cabins quieter while also boosting energy efficiency. This new lightweight sound insulation material is known as acoustic meta-material.

Acoustic meta-material is a combination of a lattice structure and plastic film that controls air vibrations to limit the transmission of wide frequency band noise, like road and engine noise. The material consists of honeycomb lattice patterns that’s covered in a thin plastic film.

Most materials used to isolate this frequency band consist mainly of heavy rubber board. Nissan’s new material weighs one-fourth as much as these while providing the same degree of sound isolation. Because of its simple structure, the material’s cost competitiveness in terms of mass production is the same, or possibly better than current materials. The material can also be applied to vehicles where the use of sound insulation materials is currently limited due to cost or weight.

The research on this new Nissan meta-material technology started around 2008. Meta-material was mainly used in high-sensitivity antennas used for electromagnetic wave research. Nissan worked to extend the applicability of meta-material technology to include sound waves, leading to the successful invention of acoustic meta-material.

Nissan says that the material can help to make a vehicle lighter, which reduces the environmental impact by requiring less fuel and producing fewer emissions. In electric vehicles, less weight means longer driving range. The quiet vehicle makes driving more comfortable with enhanced enjoyment.

Nissan has not announced when the material will go into use in a production vehicle or what vehicle might get the material first.

Visitors to CES 2020 can see and experience the new acoustic meta-material at Nissan’s display at the Las Vegas Convention Center that runs from 7 to 10 January.

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