⏎ Words Summary from News
**A Chinese-developed metasurface system, DISACM, turns walls and pipes into intelligent sensors that both boost wireless signals and detect moving objects.** The innovation, which won a gold award at the Geneva International Exhibition of Inventions in March, uses reconfigurable electromagnetic surfaces to dynamically control signal reflection, effectively turning obstacles into signal carriers. In smart-city tests, cascading just ten modules on a building facade boosted signal power in dead zones by 10 to 20 decibels while supporting data rates up to 400 Mbps and performing real-time people-flow counting.</p><p class="summary-lead">**The technology is designed for 6G networks and comes from a team at Southeast University led by Professor Cheng Qiang and academician Cui Tiejun.** Unlike conventional networks where walls block signals, DISACM applies a specially engineered “smart skin” that actively controls reflection states, allowing signals to bend around obstructions. Crucially, the same control process reads subtle changes in electromagnetic waves caused by moving people or objects, enabling simultaneous communication enhancement and environmental sensing without separate equipment.</p><p class="summary-lead">**In underground mine tunnel tests, DISACM modules embedded in walls achieved real-time positioning with an error of less than 10 centimeters while raising signal strength in blind areas by about 20 decibels.** This makes the technology exceptionally promising for complex or enclosed settings like deep building interiors or tunnels, where it can provide critical support for safety monitoring, personnel tracking, and emergency communications. By eliminating the need for dedicated sensing hardware, DISACM also cuts operational costs and simplifies network infrastructure.</p><p class="summary-lead">**The innovation builds on Cui Tiejun’s pioneering work in information metamaterials, first proposed in 2014, which opened a new paradigm for digitally manipulating electromagnetic waves.** The Geneva exhibition, one of the world’s longest-running invention showcases, awarded Southeast University 29 total medals this year, including four golds with special distinction. DISACM represents a significant step toward 6G’s promise of integrated sensing and communication, turning every surface into a potential network asset rather than an obstacle.
Key Takeaways
- DISACM transforms walls and pipes into dual-function surfaces that both amplify wireless signals and sense movement, eliminating the need for separate radar equipment.
- In underground mine tests, the system achieved sub-10-centimeter positioning accuracy while boosting signal strength in dead zones by 20 decibels.
- The technology is purpose-built for 6G networks and won a gold award at the Geneva International Exhibition of Inventions in March.
- By using reconfigurable metasurfaces as a ‘smart skin,’ DISACM turns physical obstacles into signal carriers and environmental sensors simultaneously.
Insights & Analysis
- This breakthrough could accelerate the adoption of 6G in industrial settings like mining and smart buildings, where both connectivity and safety monitoring are critical.
- The integration of sensing and communication on a single surface may force a rethinking of network infrastructure design, reducing hardware costs and energy consumption while expanding coverage.