Bubble Spire Generator: Closed-System Dual-Pulse Energy Harvester

This technical note presents a closed-loop buoyancy-based energy harvesting device, dubbed the Bubble Spire Generator. Utilizing synchronized “droplet subs” in a narrow vertical tube, each carrying an internal magnet, the system harvests energy via inductive coupling with external coil arrays. The design is pressure-driven, sealed, and designed for tabletop replication with minimal computation. Key principles include staggered ascent/descent, resonance harvesting, and no external pumps. This represents a low-cost, modular path toward off-grid kinetic energy systems powered purely by buoyancy and gravity.