A new way to watch heat move through electronics

A new technique for measuring heat flow in computer chips is the latest from MIT researchers, per MIT News. The method combines ultrafast X-rays with laser heating, allowing scientists to see heat transfer at the nanometer scale — including through buried layers that traditional optical methods can't reach. Testing on a common chip material, they found a single micrometer-scale defect reduced heat transfer by fourfold and caused heat to spread unevenly. As chips become more powerful and compact, heat management is increasingly the bottleneck in device performance — a problem affecting data centers, AI systems, and wearables. The semiconductor industry is already reaching out to collaborate on applying this breakthrough to improve chip design.

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