Turn carbon into something more useful.

Definition

Megawatt-scale electrothermal pulse synthesis converting solid-state carbonaceous precursors into pristine turbostratic graphene, paired with 10 kHz dielectrophoretic (DEP) alignment for core-shell structural composites.

The problem

Commercial graphene flakes and exfoliated graphites suffer from immediate agglomeration caused by strong Bernal (AB) interlayer pi-pi orbital overlap. When dispersed into liquid polymers, paints, or metal slurries, the sheets restack into inert graphite clusters, destroying mechanical reinforcement and requiring destructive chemical oxidation (e.g. Hummers method) that ruins electrical conductivity.

The approach

Project Chrysopoeia decouples carbon sheets via millisecond Flash Joule Heating pulses exceeding 3,000 K followed by rapid quenching (>10⁴ K/s). The resulting turbostratic lattice locks sheets into rotationally misaligned registers (d₀₀₂ = 0.345–0.362 nm), eliminating orbital bind and enabling spontaneous exfoliation. For structural masterbatches, 10 kHz alternating-current fields induce electrostatic dipole torque, aligning platelets along primary mechanical stress vectors prior to epoxy vitrification.

How it works

1. High-Dielectric Compaction: Solid carbon precursors compacted under 1,500 psi hydraulic load within sintered alumina ceramic chambers (15 kV/mm breakdown).
2. Megawatt Electrothermal Pulse: Operationalizing Thomas Edison's 1879 carbon filament vacuum Joule heating lineage, discharges kilo-ampere current surges (j > 10⁴ A/cm²) driving core temperatures above 3,000 K in 1–5 milliseconds to sublime non-carbon impurities.
3. Turbostratic Quenching: Radiative cooling exceeding 10⁴ K/s freezes the recrystallizing sp² lattice into random rotational registers, expanding d₀₀₂ to 0.354 nm.
4. Closed Vacuum Classification: Harvested through an enclosed HEPA cyclone line, followed by mild chemical de-scaling to dissolve electrode contact minerals.
5. Dielectrophoretic Alignment: In wet epoxy resins, 10 kHz AC fields (150 V/mm) apply dipole torque (T = p × E) to orient platelets into high-modulus anisotropic cores.
6. 532 nm Raman Metrology: Every production batch verified with a certified silicon reference peak (520.7 cm⁻¹) and calibrated against NIST SRM 2241 standards, yielding expanded uncertainty U = ±0.04 (k=2, 95% CL) on ID/IG and single Lorentzian 2D peaks conforming to ISO/TS 21356-1:2021 and ASTM E3220-25.

Project notes

Synthesis Temp

> 3,000 K

Stacking Order

Turbostratic (Non-Bernal)

Normative Standard

ISO/TS 21356-1 · ASTM E3220-25

Measurement Uncertainty

U = ±0.04 (k=2, 95% CL)

These are the project’s documented design notes. Consult the linked implementation and its version before relying on a specific capability.

What comes next

Consolidating Spark Plasma Sintering (SPS) billets for Ti-6Al-4V titanium-graphene metal matrix composites.

Follow the documentation, repositories, and related sites behind this project.

Topics: Materials Science · Graphene · Flash Joule Heating · Composites · Dielectrophoresis · Nanotechnology