The French materials manufacturer Nanoe presented a new ceramic filament at the EUCAP 2025 (European Conference on Antennas and Propagation). The material is based on sintered titanium dioxide (TiO₂) in the rutile modification and is called Zetamix TiO₂. With a permittivity of around 75 and low dielectric losses, the filament is specifically aimed at applications in the high-frequency (RF) range.
High-permittivity materials such as TiO₂ make it possible to efficiently concentrate electromagnetic energy in a small space. This allows components such as dielectric resonators or antennas to be designed much more compactly without sacrificing performance. In direct comparative tests, RF components made with Zetamix TiO₂ were able to save noticeably on volume and weight compared to zirconia-based counterparts.
The development was carried out in collaboration with Thales and the French research laboratory LEAT, funded by the Agence Innovation Défense. According to Nanoe, the material is currently the ceramic filament with the highest permittivity available for 3D printing. It is particularly suitable for applications where precise geometries, miniaturization and high material quality are required – for example in aerospace, defence technology or high-frequency communication technology.
Zetamix TiO₂ underlines the trend towards the specialization of ceramic materials in 3D printing – and at the same time opens up new fields of application in which material properties such as permittivity, temperature stability and dimensional accuracy are crucial.
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