Great Lakes Crystal Technologies

Great Lakes Crystal Technologies (GLCT) is a United States advanced-materials company based in Lansing, Michigan, that develops and supplies single-crystal diamond grown by chemical vapor deposition (CVD). The company positions diamond as an ultra-wide band-gap semiconductor and as a thermal-management material, marketing its products around four application pillars: quantum technologies, advanced packaging, high-power electronics, and durable electronics for extreme environments. GLCT's product line is organized by grade rather than by finished device. Its catalog includes thermal-grade substrates (up to 10 mm x 10 mm and large-area versions up to 20 mm x 20 mm), quantum-grade nitrogen-vacancy (NV) substrates and epiwafers with controlled NV concentrations, intrinsic quantum-grade substrates, optical-grade low-strain substrates, and electronics-grade substrates and epiwafers with specified boron doping. These are sold as single-crystal CVD diamond wafers and substrates with defined crystallographic orientation (typically <100>), thickness, and surface roughness, aimed at customers who then fabricate sensors, power devices, or thermal spreaders. The company emphasizes diamond's material properties in its marketing: thermal conductivity above 2,200 W/(m·K), fracture toughness above 8 MPa·m, high dielectric strength, and high carrier saturation velocity. It argues these figures of merit translate into electronics performance orders of magnitude beyond silicon, and it highlights use cases such as nitrogen-vacancy-center quantum sensors for GPS-free navigation, magnetic anomaly detection, and biomedical sensing; diamond heat spreaders for advanced chip packaging; and radiation- and heat-tolerant devices for nuclear, space, and other demanding environments. GLCT describes itself as collaborative and quality-focused, seeking long-term partnerships with customers and promising to meet or exceed expectations on quality, cost, and schedule. Public information about the company is limited: Wikidata records it simply as a company in Lansing, United States, and the official website is the primary source for its product portfolio and positioning. No parent company, ownership structure, founding date, or executive roster is disclosed in the available evidence.

Great Lakes Crystal Technologies is a United States advanced-materials company located in Lansing, Michigan, according to Wikidata. The available evidence does not disclose a founding date, founders, ownership, or a detailed corporate history. What is documented is the company's product and technology focus: it produces single-crystal diamond grown by chemical vapor deposition (CVD) and markets it as an ultra-wide band-gap semiconductor and thermal material. The company's public identity is built around four application areas. In quantum technologies, GLCT supplies diamond with nitrogen-vacancy (NV) centers for sensors used in GPS-free navigation, magnetic anomaly detection, and biomedical sensing. In advanced packaging, it promotes diamond's thermal conductivity for heat extraction to improve computational efficiency and chip longevity while reducing power consumption. In high-power electronics, it cites diamond's wide band gap, high carrier saturation velocity, high dielectric strength, and the highest thermal conductivity of all materials as reasons it outperforms silicon by orders of magnitude. In durable electronics, it targets demanding environments such as nuclear reactors and space. GLCT's product catalog is organized by grade: thermal-grade substrates (standard and large-area), quantum-grade NV substrates and epiwafers, intrinsic quantum-grade substrates, optical-grade low-strain substrates, and electronics-grade substrates and epiwafers. Specifications include dimensions up to 20 mm x 20 mm, thicknesses from 150 µm to 500 µm (and up to 500 µm for electronics-grade), <100> face orientation, surface roughness values from <4 nm Ra to <9 nm Ra, NV concentrations of 100–500 ppb and 500–1000 ppb, and boron concentrations of 0.03–2800 ppm. The company states that it aims to become the leading provider of high-performance diamond materials and describes its operating philosophy as collaborative, emphasizing customer partnerships and delivery on quality, cost, and schedule. Beyond this, the public record is sparse; no milestones such as funding rounds, leadership changes, or facility expansions are available in the supplied evidence.

High-performance single-crystal CVD diamond materials for quantum, thermal-management, power-electronics, and extreme-environment applications.

• Thermal Grade Substrate

  Single-crystal CVD diamond substrate up to 10 mm x 10 mm, 0.5 mm thick, <100> orientation, roughness <5 nm Ra.

• Thermal Grade Large-Area Substrate

  Single-crystal CVD diamond substrate up to 20 mm x 20 mm, 0.5 mm thick, <100> orientation, roughness <9 nm Ra.

• Quantum Grade NV Substrate

  Single-crystal substrate up to 6 mm x 6 mm, 0.5 mm thick, <100> orientation, roughness <5 nm Ra, NV concentration 100–500 ppb.

• Quantum Grade NV Epiwafer

  Single-crystal substrate up to 6 mm x 6 mm, 0.5 mm thick, <100> orientation, roughness <5 nm Ra, NV concentration 500–1000 ppb.

• Intrinsic Quantum Grade Substrate

  Single-crystal CVD substrate up to 6 mm x 6 mm, 0.2–0.5 mm thick, <100> orientation, roughness <4 nm Ra.

• Optical Grade Low-Strain Substrate

  Single-crystal CVD substrate up to 6 mm x 6 mm, 150–500 µm thick, <100> orientation, roughness <9 nm Ra.

• Electronics Grade Substrate

  Single-crystal CVD substrate up to 6 mm x 6 mm, 0.5–500 µm thick, <100> orientation, boron concentration 0.03–2800 ppm.

• Electronics Grade Epiwafer

  Single-crystal CVD substrate up to 10 mm x 10 mm, 0.5 mm thick, <100> orientation, roughness <9 nm Ra.

1. 1Great Lakes Crystal – Homeglcrystal.com
2. 2Products – Great Lakes Crystalglcrystal.com
3. 3Great Lakes Crystal Technologies – Wikidatawikidata.org