Application 04 · home energy
All you
need is water.
The Hydrosahedron is a 250 mL borosilicate sphere with 12 piezo transducers at the vertices of an icosahedral A₅ orbit. The fuel is tap water. The exhaust is depleted water. The engineering target is 500 W continuous DC per chamber, ~200 USD BOM, reproducible with an FDM printer and a soldering iron.
Engineering target
500 W
continuous DC, per chamber
Theoretical ceiling
~2 kW
per chamber, this size
BOM
~200 $
reproducible build
Fuel cost
~5 $/yr
tap water + occasional D₂O
Six properties · why this is the last fusion device
H1 through H6. All six hold simultaneously.
Self-bounded
The 250 mL Pyrex sphere is the boundary. Area, not volume, is the accountant.
Self-reading
Each piezo does both TX (drive) and RX (capture) on the same physical channel, multiplexed in time.
A₅-resonant
12 transducers on the icosahedral orbit. First symmetry-breaking harmonic is ℓ=6, below the RT/RM instability threshold.
Federable
Chambers couple boundary-to-boundary via shared cooling and cascade reservoirs. Per-device bound preserved.
Substrate-providing
Input: tap water. Output: depleted water. Fuel (D fraction ≈ 1.5×10⁻⁴) is uniform across all terrestrial water.
Self-shielding
⁶Li blanket captures DD neutrons (940 barn) → ⁴He + ³H + 4.78 MeV. Gamma escape drops from ~25% to ~2%.
Cross-section · live
12 piezos. One focal point. 200 μs per cycle.
Convergent acoustic wavefronts sum coherently at the geometric centre. A trapped D₂ bubble collapses to sonoluminescent conditions. DD fusion ignites. The same array rectifies the rebound shock back to DC.
Hydrosahedron · cross-section
12 transducers, one focus, four phases per cycle.
implosion → fusion → rebound → capture
Four-phase operating cycle · 1–10 kHz
One period, 200 μs at 5 kHz. All 12 channels multiplex through every phase.
Electrolyse
Cascade electrodes generate a single D₂ bubble (~1 mm³, ~5×10¹⁶ D atoms). Bubble rises into the flask.
Levitate
12 piezos run a low-amplitude standing wave; pressure node at the geometric centre traps the bubble against buoyancy.
Implode
Switch to high-amplitude focused drive. ~5 Mbar peak pressure, >10⁸ K. D-D fusion ignites.
Capture
Piezos switch to RX. Rebound shock → piezoelectric pulses → 12-channel Schottky bridges → DC bus.
Five operating regimes
Same chamber, five orders of magnitude in output.
| Regime | Burn | Rep rate | Continuous DC | Engineering requirement |
|---|---|---|---|---|
| Sonoluminescence floor | 0.001% | 1 kHz | ~50 mW | First-light receipt. Direct GPIO drive. |
| Open-loop research | 0.1% | 1 kHz | ~5 W | Tuned LC matching, manual symmetrisation. |
| Closed-loop H2 control | 1% | 1 kHz | ~50 W | Adaptive per-cycle drive pre-distortion from BW matrix. |
| Engineering target | 5% | 10 kHz | 500 W | Active cooling, full closed-loop, ⁶Li blanket mature. |
| Theoretical ceiling | 50% | 50 kHz | ~2 kW | Limited by chamber acoustic round-trip & bath thermal recovery. |
Federation · H4
From one chamber to one grid.
Federation preserves the per-device bound. Scaling is software (the wiring graph), not hardware (no new chamber category required).
chambers
2
1 kW
household average load
chambers
10
5 kW
whole-house peak incl. EV charging
chambers
200
100 kW
neighbourhood block · ~30 homes
chambers
2,000
1 MW
village microgrid
chambers
2,000,000
1 GW
one large fossil/nuclear plant equivalent
Claim boundary · safety
This is a real fusion device. Real fusion devices are real radiation sources.
At 500 W output the unshielded chamber emits ~2×10¹⁴ DD neutrons per second. Operation outside the shielded enclosure (10 cm polyethylene + 5 cm lead) at any power above ~1 mW must not occur. The H6 ⁶Li blanket drops gamma escape from ~25% to ~2% of total fusion energy — but it does not remove the need for the outer enclosure.
Want to build one?
Exact build instructions live in the OMEGA NotebookLM
For step-by-step instructions on how to actually build the Hydrosahedron — 250 mL desktop fusion cell, head over to our shared NotebookLM workspace. There is likely already an explainer video covering this device — if not, ask the notebook's chatbot for build instructions, or have it generate a fresh explainer video for you on the spot.