Thermal Footpaths and Surfaces

A close-up photograph of a futuristic pavement panel embedded in a city sidewalk, displaying a grid of nested circular piezoelectric and square thermoelectric modules designed to harvest energy from pedestrian movement and temperature differences.

Piezoelectric and Thermoelectric Hybrid Footpaths

The floor of a busy underground station handles about thirty thousand footsteps on a winter morning. Each one drives a few hundred newtons of force into whatever is beneath it. Below the tiles, at roughly sixty centimeters of depth, the soil sits at twelve degrees Celsius, unmoved by what the air above does – whether…

Active solar roadway with hex-tile PV array in desert landscape.

Solar-Absorbing Road Surfaces for Energy Generation

Kriss J.2 months ago5 days ago30 mins

A stretch of motorway in southern Spain reaches 72 degrees Celsius at the surface on a clear July afternoon. The air above it sits at 38. Two meters below the asphalt, the ground holds steady at 17. That 55-degree differential exists for eight to ten hours, across every kilometer of that road, and not a…