CHESS (Controlled Hierarchically Engineered Superlattice Structures)

History

2025: Product Announcement

On May 21, 2025, American specialists from the Johns Hopkins University Applied Physics Laboratory in Maryland announced the development of a new technology for solid-state thermoelectric cooling based on nanomaterials. The method is called CHESS (Controlled Hierarchically Engineered Superlattice Structures) - controlled hierarchically designed superlattice structures.

Project participants note that CHESS is the result of 10 years of research. Scientists from Samsung Research took part in the development. Conventional cooling systems, including air and liquid, are often bulky and energy intensive. In addition, they depend on chemical refrigerants that can be harmful to the environment. With the rapid growth of data centers (data centers) and consumer electronics, smaller and more efficient solutions are needed. Thermoelectric cooling is considered as one of them.

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Фото: jhuapl.edu

Said technology uses electrons to remove heat through specialized semiconductor materials, which eliminates the need for moving parts or cooling liquids. CHESS materials show a nearly 100 percent increase in heat removal efficiency over conventional thermoelectric materials at room temperature. At the level of the device in thermoelectric modules, thanks to CHESS, an increase in efficiency by 75% is achieved, and in a fully integrated cooling system - by 70%.

For the production of CHESS materials, organometallic chemical vapor deposition (MOCVD) is used. According to the project participants, this method is scalable and cost-effective, and is also suitable for large-scale production.^[1]

Notes