Efficient thermal management is critical for modern electronics, including integrated circuits and data centers, as well as specialized industrial components. These applications demand materials with ultra-high thermal conductivity. While graphite is an ideal candidate, the thermal conductivity of currently available mass-produced graphitic products is often insufficient due to the low crystal quality inherent in standard processing. Conversely, Highly Oriented Pyrolytic Graphite (HOPG) offers excellent thermal properties, but its production requires extreme conditions (up to 3,500° C and high pressure) that are costly and difficult to scale. Catalytic Chemical Vapor deposition (C-CVD) growth of graphitic films on metal substrates is a lower-cost, lower-temperature alternative (~ 1,000° C), but is severely limited by its growth mechanism, typically yielding films no thicker than 1 mm, while most industrial thermal management applications require thicknesses between 50-100 mms.

Unmet Need
The performance of graphitic heat spreaders is directly tied to their thermal conductance, which is a function of both conductivity and thickness. Conventional C-CVD methods expose both sides of a metal catalyst to the carbon feedstock simultaneously. This causes carbon to dissolve and segregate from both the top and bottom sides of the catalyst at similar rates.
Once a thin film forms on the surface, it blocks further feedstock decomposition and effectively stops growth. This self-limiting phenomenon prevents C-CVD from producing the industrial-scale, high-quality thick multilayer graphene (MLG) required for a wide range of high-performance applications.

Our Technology: Asymmetric CVD (A-CVD)
Our Asymmetric Chemical Vapor Deposition (A-CVD) process is a novel system and process engineered to bypass the thickness restrictions of conventional C-CVD. A-CVD utilizes a metal catalyst (e.g., Nickel) and ensures asymmetric exposure: one surface is exposed to a hydrocarbon gas (the carbon feedstock), while the opposing surface is exposed only to a neutral carrier gas.

The A-CVD Mechanism
1. Creation of Carbon Gradient: The hydrocarbon decomposes catalytically on the exposed surface, establishing a steep carbon concentration gradient within the metal.
2. Unrestricted Growth: This gradient drives continuous carbon diffusion toward the neutral-gas-exposed surface, where the carbon precipitates and the multilayer graphene grow. Because the “exposed side” remains free of a graphitic film, the catalytic surface stays active indefinitely, enabling the growth of much thicker films.
3. Thickness and Quality: This asymmetric strategy removes the traditional thickness limit. A-CVD has successfully produced films up to 100 mm thick, a two-order-of-magnitude increase over standard CVD, while maintaining high crystal quality at moderate growth conditions (~ 1,000° C) and atmospheric pressure.

Market Applications
The resulting thick multilayer graphite exhibits superior thermal conduction, with reported thermal conductivity up to 3,000 W/mK. This performance profile makes it highly advantageous across several high-value sectors:

• Thermal Management: Ideal for use as high-performance heat spreaders in integrated circuits, AI chips, and data center cooling.
• Energy & Infrastructure: Electrodes for supercapacitors and batteries; lining for high-temperature furnaces.
• Specialized Components: Metallurgical crucibles; composite laminates, sealing for petrochemical and atomic energy facilities.
• Aerospace & Transport: Lightweight, high-durability thermal and electrical components for extreme environments.