CVD diamond substrate. Graphene FET array. RISC-V ISA. Manufactured at L4 from asteroid-derived carbon at zero raw material cost. Radiation-hard where silicon fails in hours. Operates in environments where no other chip survives. Nuclear reactors. Deep space. Chernobyl sub-basement. Fusion drive control. The processor family that runs the solar system.
Silicon fails under radiation because ionizing particles create electron-hole pairs that degrade CMOS gate oxides and cause latchup. The physics of silicon failure is unavoidable — it is a property of the material, not of the design. Diamond has a 5.5 eV bandgap. Radiation-induced ionization cannot bridge this gap under any dose rate encountered in terrestrial or space environments. The substrate is physically immune to the primary mechanism that destroys silicon.
Silicon at Chernobyl sub-basement (300 R/hr ambient): Standard CMOS fails in under 2 hours. Mil-spec silicon fails in days. SiC is marginal. No silicon variant has completed a sustained remediation operation in the Reactor 4 sub-basement. Every robotic system deployed has failed — not from mechanical damage — from radiation killing the electronics. DRAD-1 is rated operational indefinitely in this environment. DRAD-Extreme is designed specifically for it. The sub-basement is now a survivable environment.
Every DRAD family member shares the CVD diamond substrate, graphene FET array, and RISC-V ISA. They differ in clock speed, radiation hardness class, and quantum metric architecture level. All are manufactured at L4. All are delivered FOB Earth orbit from Month 21. Chip prices are determined by market value for radiation hardness — not benchmarked against consumer silicon.
| Chip | Clock | TID Rating | Carrier mobility | Architecture | Production | Primary use |
|---|---|---|---|---|---|---|
DRAD-750 |
750 MHz | >1 Mrad | Baseline | CVD Diamond / Graphene FET | Month 14 | Volume commercial |
DRAD-1 |
GHz | >1 Mrad | Baseline | CVD Diamond / Graphene FET | Month 14.5 | System integrator |
DRAD-2 |
1.2+ THz | >10 Mrad | +300% | CVD Diamond / QG-FET / SrTiO₃ | Month 18–24 | Terahertz specialist |
DRAD-HF |
Multi-THz | >10 Mrad | +300% | DRAD-2 variant — THz optimised | Month 28 | Sensors / deep-space comms |
DRAD-PWR |
THz | >10 Mrad | +300% | DRAD-2 variant — thick-film boron diamond | Month 28 | FPP coil drivers / mass driver |
DRAD-X |
THz | >100 Mrad | +400% | DRAD-3 arch — Extreme environment | Year 3 | Chernobyl / deep space |
DRAD-3 |
Multi-THz | >100 Mrad | +800% | Topological SC gates / 3D stacked | Year 3–5 | Advanced systems |
DRAD-A |
Multi-THz | >100 Mrad | Self-tuning | Adaptive QM — embedded DRAD-1 supervisor | Year 3–5 | Long-duration autonomous |
The quantum metric tensor (gab) describes the geometric distance between quantum states in Hilbert space at a material interface. At oxide heterostructure interfaces — SrTiO₃/LaAlO₃ on CVD diamond — the quantum metric can be engineered to protect electron trajectories from scattering. Ionizing radiation that would destroy silicon-based carrier mobility becomes geometrically irrelevant. The electron does not scatter because its trajectory is protected by the geometry of the lattice itself — not by doping profiles or shielding mass. This is the UNIGE/Salerno discovery that enables the DRAD-2 and beyond architecture. Quantum geometry becomes a deliberate engineering parameter.
The entire DRAD production chain — substrate, transistor layer, interconnects, packaging — uses carbon allotropes produced from asteroid feedstock at L4. Zero silicon. Zero rare earth metals in the chip itself. Zero Earth launch cost for production after the seed ship.
For seventy years every electronic system deployed in a radiation environment has been constrained by the same fundamental limitation: silicon CMOS fails under dose. The solutions — shielding, redundancy, periodic replacement — add mass, add cost, and add failure modes. They do not solve the problem. They manage it.
DRAD solves it. CVD diamond substrate, graphene FET layer, RISC-V ISA, manufactured from asteroid carbon at L4 at zero raw material cost. Delivered FOB Earth orbit from Month 21. The chip that runs the solar system is also the chip that replaces every silicon device in every radiation environment on Earth.
Speculāris — On the cutting edge.
DRAD-750 and DRAD-1 available from Month 21 of L4 factory arrival. All orders subject to Speculāris delivery schedule. Strategic investment partners receive 50% perpetual discount across the full DRAD family.