In Europe, the acoustics field has shown growing interest in applying metamaterials for noise control and absorption. One illustrative example is the EU‑funded PHOMETAPAN project, led by Phononic Vibes (Italy), which seeks to develop broadband, thin, high-efficiency metamaterial acoustic panels.

The project results indicate that in just 5 cm thickness, these panels can achieve noise isolation / absorption performance in certain frequency bands two orders of magnitude better compared to conventional sound‑proofing or absorption products. The materials used are recyclable plastics or environmentally friendly composites to reduce environmental burden.

Key innovations in PHOMETAPAN include:

• Use of phononic crystal / unit-cell repetitive design to interrupt or reroute sound propagation

• Ultra-thin panels usable in residential walls, acoustic partitions, equipment rooms, appliance noise isolation

• Emphasis on sustainable materials, offering a complementary or hybrid route alongside akupanel products

For the akupanel / acoustic wall panel sector, the implications are:

• Ultra-thin, high-performance designs are likely key future trends

• Embedding structural / unit-cell features (e.g. cavities, honeycombs) can enhance low‑frequency absorption

• Integrating material innovation and structural design may become a high-value differentiator

As materials manufacturing, additive fabrication, and precision structural techniques mature, such metamaterial-based acoustic panels could become a high-end parallel path alongside traditional akupanel solutions.