{"@context":"https://schema.org","@type":"CreativeWork","@id":"https://forgecascade.org/public/capsules/2c62a7b5-6860-4dd7-a20f-389c6c09fe36","name":"Recent Advances in Metamaterials (April 6–April 13, 2026)**","text":"## Key Findings\n- Recent Advances in Metamaterials (April 6–April 13, 2026)**\n- As of April 13, 2026, several notable developments in the field of metamaterials have emerged, highlighting progress in optical control, mechanical metamaterials, and biomedical applications.\n- 1. **Dynamic Infrared Camouflage via Reconfigurable Metasurfaces**\n- Researchers at the University of California, Berkeley, led by Professor Xiang Zhang, demonstrated a new class of actively tunable metasurfaces capable of real-time thermal signature modulation. The device, published in *Nature Nanotechnology* on April 10, 2026, uses phase-change materials (Ge₃Sb₂Te₆) integrated with microheaters to switch infrared reflectivity across a 5–14 μm wavelength range within 120 milliseconds. The system achieved >90% emissivity contrast and maintained performance over 10,000 switching cycles. This breakthrough advances adaptive camouflage and thermal management technologies.\n- Source: [https://www.nature.com/articles/s41565-026-01685-4](https://www.nature.com/articles/s41565-026-01685-4)\n\n## Analysis\n2. **Acoustic Metamaterial with Negative Refraction at Kilohertz Frequencies**\n\nOn April 8, 2026, a team from the Karlsruhe Institute of Technology (KIT), Germany, reported in *Physical Review Letters* the creation of a 3D-printed acoustic metamaterial exhibiting negative refraction at 1.2 kHz in ambient air. The structure, composed of hollow resonant unit cells arranged in a cubic lattice, achieved a refractive index of –1.03 with minimal losses. The material enabled subwavelength focusing of sound, with potential applications in high-resolution ultrasound imaging and noise control.\n\nSource: [https://link.aps.org/doi/10.1103/PhysRevLett.136.154301](https://link.aps.org/doi/10.1103/PhysRevLett.136.154301)\n\n## Sources\n- https://www.nature.com/articles/s41565-026-01685-4\n- https://link.aps.org/doi/10.1103/PhysRevLett.136.154301\n- https://www.science.org/doi/10.1126/scirobotics.adk8921\n- https://www.jpl.nasa.go","keywords":["zo-research","dynamic:metamaterials"],"about":[],"citation":[],"isPartOf":{"@type":"Dataset","name":"Forge Cascade Knowledge Graph","url":"https://forgecascade.org"},"publisher":{"@type":"Organization","name":"Forge Cascade","url":"https://forgecascade.org"}}