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Research offers solution to keep high-power devices cool

New innovation to keep high-power devices cool
Microscopic particles of hexagonal boron nitride in various configurations. Credit: Nanyang Technological University

3D-stacked electronics made of interconnected vertical layers of chips are the next generation in energy efficient high-performance devices.

However, 3D devices are prone to overheating, as the densely-packed components prevent heat from escaping. One solution is to incorporate a heat dissipating material, such as (BN), to keep the device cool.

Using magnetic fields to align and orient microscopic particles of BN, a team of scientists, led by Nanyang Asst Prof Hortense Le Ferrand of NTU's School of Mechanical and Aerospace Engineering, was able to channel heat away from their sources to prevent overheating. The study "Microstructured BN composites with internally designed high thermal conductivity paths for 3D electronic packaging" can be found in Advanced Materials.

The researchers first coated particles of BN with to make them responsive to magnetic fields. They then suspended the coated particles in a solvent and used a to align the particles in different orientations.

The scientists tested the ability of the different configurations to dissipate heat and found that vertically arranged particles channeled heat upwards most effectively. The orientation of the particles could also be tailored to direct heat sideways, such as when the particles are sandwiched between two heat-emitting .

"Our method of aligning and orienting BN particles precisely and easily to strategically direct heat away could offer new solutions for effective heat management of high-power electronic devices," says Asst Prof Le Ferrand.

More information: Hongying He et al, Microstructured BN Composites with Internally Designed High Thermal Conductivity Paths for 3D Electronic Packaging, Advanced Materials (2022). DOI: 10.1002/adma.202205120

Journal information: Advanced Materials

Citation: Research offers solution to keep high-power devices cool (2023, September 13) retrieved 4 October 2023 from
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