The material stack will determine the success or failure of the U.S. semiconductor renaissance.

Material Stack Will Determine the Success or Failure of the U.S. Semiconductor Revival

What Happened?

In June 2025, the U.S. Department of Commerce, under the CHIPS and Science Act, provided $500 million to AI materials company SandboxAQ for developing advanced materials needed for semiconductor manufacturing. The project focuses on four main areas: PFAS-free process chemicals, advanced catalysts, rare-earth-free permanent magnets, and next-generation battery systems. This investment marks the U.S. government's recognition that materials science has become the biggest bottleneck to scaling advanced manufacturing, and that dependence on overseas materials for the supply chain is threatening national strategic security.

Why It Matters?

Semiconductor manufacturing is not just about lithography machines and wafer fabs. Process chemicals, catalysts, magnetic materials, and energy storage systems directly impact yield, equipment utilization, defect control, and manufacturing costs. Currently, these critical materials are highly concentrated in the hands of Japan, Germany, and China. For example, the photoresist market is dominated by JSR, Tokyo Ohka Kogyo, and Shin-Etsu Chemical; catalysts and precursors are supplied by Entegris, Merck, etc.; and China holds over 90% of global rare-earth permanent magnet production capacity. Without localization of the material segment, newly built U.S. wafer fabs will always be at the mercy of others.

Background

• Technical Background: Traditional material development relies on trial-and-error, has a long cycle (5–10 years), and cannot keep up with the stringent requirements for material purity, stability, and environmental friendliness of advanced nodes (2nm, 1nm). SandboxAQ's Large Quantitative Models (LQMs), based on first-principles data such as density functional theory and molecular dynamics, can screen millions of candidate molecules within weeks, significantly shortening R&D cycles.
• Market Background: The global semiconductor materials market was approximately $68 billion in 2024 and is expected to surpass $100 billion by 2030. Among this, demand for specialty chemicals, high-purity gases, and CMP slurries for advanced processes (<7nm) is growing by over 15% annually.
• Industry Background: The U.S. has attracted over $300 billion in investment through the CHIPS Act, but most of it is concentrated in wafer manufacturing (TSMC, Intel, Samsung building fabs in the U.S.) and equipment (ASML, Applied Materials). The funding allocated to the materials segment accounts for only a very small proportion, resulting in a "top-heavy" situation.

In-Depth Analysis

• #### Technology Impact- Technology Roadmap:
• - PFAS-Free Chemicals: PFAS (per- and polyfluoroalkyl substances) are used in semiconductors as heat transfer fluids, insulating coatings, and lubricants. Alternatives must balance thermal stability and dielectric performance. Candidate materials include fluorinated ketones, hydrofluoroethers (HFE), etc. SandboxAQ's AI models can predict the stability of new molecules in plasma environments.
• - Advanced Catalysts: Used to generate ultra-pure gases (e.g., trimethylaluminum, tungsten precursors), deposition processes (ALD, CVD), and exhaust treatment. Traditional catalysts (e.g., platinum group metals) are costly and supply-concentrated. AI can accelerate the discovery of non-precious metal catalysts based on nickel, cobalt, and molybdenum.
• - Rare-Earth-Free Permanent Magnets: Precision motion stages, vacuum pumps, and stepper motors rely on neodymium-iron-boron magnets. Alternatives include iron-nitrogen compounds (α''-Fe16N2), manganese-aluminum-carbon (MnAlC), etc., but mass production is challenging. LQMs can simulate magnetic moment and coercivity, reducing experimental iterations.
• - Next-Generation Batteries: Fabs require extremely reliable uninterruptible power supplies, making vanadium flow batteries and sodium-ion batteries candidates. AI can optimize electrolyte formulations and electrode materials.
• Technical Barriers: The key lies in the material-process-equipment co-validation. New materials must be tested across the entire production line, involving steps such as lithography, etching, deposition, and cleaning. The certification cycle is typically 2–3 years. AI can only accelerate discovery, not bypass downstream validation.- United States: Attempting to rebuild materials R&D capabilities through the SandboxAQ project. However, it must compete with existing giants like Entegris and Merck (US/Germany). SandboxAQ's technological advantage lies in AI, but it lacks mass production experience.
• Japan: JSR, Tokyo Ohka Kogyo, Shin-Etsu Chemical, etc., have long dominated the materials market. They are also investing in AI (e.g., JSR's collaboration with IBM), but at a slower pace. The Japanese government may increase support for materials development at the Japan Atomic Energy Agency (JAEA).
• China: Holds an absolute advantage in the field of rare earth permanent magnets, but high-end semiconductor chemicals still rely on imports. China is encouraging domestic substitution through the "14th Five-Year Plan", but AI materials simulation started late. The US restricts exports of advanced materials technologies (such as precursors) to China, and the SandboxAQ project further tightens China's access to advanced chemicals.
• South Korea: Samsung and SK Hynix are important materials users, but local suppliers (e.g., Dongjin Semichem) have weak competitiveness. South Korea may strengthen cooperation with the US to acquire new technologies.
• Europe: Companies such as Merck, BASF, and Solvay have deep accumulations. The EU Chips Act also focuses on materials, but the investment scale is relatively small.- Short-term (1-2 years): SandboxAQ is not yet profitable, but its valuation could skyrocket after receiving government funding. Pay attention to related industry chain companies: Entegris (material supply), Applied Materials (equipment adaptation), Entegris (gas delivery).
• Medium-term (3-5 years): If technical validation succeeds, the material certification services market will explode. Contract research organizations (CROs) and AI materials platforms (e.g., Citrine Informatics, Kaneka) are expected to benefit.
• Long-term (5-10 years): Increased U.S. material self-sufficiency will weaken Japan's pricing power in photoresists and Germany's in chemicals. Private equity can focus on investments in material manufacturing pilot lines.

#### Long-Term Outlook

• 3 years: SandboxAQ will deliver at least one PFAS-free chemical for mature nodes above 28nm. Breakthroughs may occur in the catalyst field. Progress in rare earth magnet alternatives is slow.
• 5 years: The usage rate of PFAS alternatives in U.S. wafer fabs increases to 30%. AI materials platform penetration rises, forcing traditional material suppliers to transform.
• 10 years: The materials field sees a tripartite landscape of the U.S., Japan, and Europe. China commercializes rare earth magnet alternatives, but environmental regulations may limit adoption.

#### Industry Chain Analysis

• Upstream (raw materials): Sources of minerals such as lithium, cobalt, nickel, and fluorides. The U.S. needs to expand domestic mining or sign supply agreements with allies.
• Mid-upstream (material synthesis and purification): High-purity chemicals, specialty gases, sputtering targets. SandboxAQ focuses on R&D, while manufacturing still requires partners like Entegris and Merck.
• Midstream (wafer fabrication): New materials need process validation; TSMC and Intel are key validation platforms. They set standards that influence the entire ecosystem.
• Downstream (packaging and testing): Advanced packaging (e.g., 2.5D/3D) demands higher performance from underfill adhesives and thermal interface materials. New materials also have application potential in packaging.

Conclusion

The success of the U.S. semiconductor revival depends not only on the speed of wafer fab construction but also on breakthroughs in materials science. The $500 million investment in SandboxAQ marks the U.S. government elevating materials innovation to a strategic level. This funding can catalyze an AI-driven materials discovery paradigm, but technical validation, capacity building, and geopolitical games remain long-term challenges. For the global semiconductor supply chain, autonomy in materials will become a new battleground following equipment, design, and manufacturing, forcing Japan's chemical giants, China's rare earth players, and Europe's specialty chemical companies to reposition. Investors should closely monitor materials certification progress and geopolitical policy changes, as these will be core variables in the semiconductor competitive landscape over the next decade.