Energy from the cold. Power from motion.
A heat engine whose cold side radiates through the 8–13 µm atmospheric window to the deep-space cold, while its sky-facing emitter doubles as the proof mass of a vibration harvester. One structure, two ambient sources — the night sky and the motion already in the ground.
Every clear night the ground stays warm while a sky-facing surface, radiating in the infrared, falls below the air around it. That standing temperature difference — warm earth below, cold sky above — is a thermodynamic gradient. A low-temperature-differential engine runs on it, producing mechanical power after dark, when photovoltaics produce nothing.
Cryergon's departure is structural. The sky-facing emitter is not a passive plate. It is also the seismic mass of a vibration harvester, so the same element that radiates heat captures the motion of the structure it sits on. The slow, reliable engine stroke is used to pluck the harvester — turning guaranteed low-frequency work into efficient harvesting events, even when the air is still.
The channels are complementary in time. Radiative power is largest at night and in still air; ambient vibration is largest by day, when the structure is active. Conditioned together onto one store, the output is steadier than either alone.
The emitter cools below ambient and the engine turns on the resulting ΔT. Slow, low, and dependable — a baseline that holds through the quiet hours.
The emitter mass, suspended over a base on the host structure, converts the vibration around it. The engine stroke plucks the same resonator, so neither source sits idle.
An LTD engine turns slowly — a hertz or two. A piezoelectric resonator wants far higher frequencies. The engine's reciprocation plucks the resonator: each release rings it at its own efficient frequency, so reliable low-frequency work becomes efficient high-frequency harvesting — and ambient vibration feeds the very same resonator.
One architecture, many bodies. The shared-mass principle holds from a single ground node to a tiled roof, from a free-piston unit to a buoy.
A single emitter plate over a ground-coupled engine — a continuous nighttime baseline for one remote sensor.
Modules tiled and aggregated on a shared bus with per-module tracking; watts overnight for a cluster of nodes.
Engine reciprocation and ambient vibration transduced through one coil and armature — fewest moving parts.
Water is the warm reservoir; wave motion drives the vibration channel. Built for lakes and coastal waters.
Ambient vibration is both the sensed signal and an energy source; the radiative pathway carries the node through still hours.
A solar-reflective, IR-emissive stack with anti-dew drainage extends the engine into daylight and humid nights.
Representative values for illustration, not performance guarantees; output scales with emitter area, mass, and site conditions.
Anywhere a clear sky and ambient motion coexist and battery servicing is costly.
Provisional patent application — 2026. A twelve-figure specification with claim architecture centered on the shared-mass, dual-pathway structure described here. Cryergon, Inc. is a venture of HeOntotita Corporation.
Cryergon is pre-commercial. Inquiries from researchers, integrators, and counsel are welcome.
Caducel · Hapacta · Ditoxo
Ophinil · Atremia · Keraunophylax
Mnemostasis · Sigephylax · Cryergon
Each incorporated as a freestanding entity under the HeOntotita holding structure.