Silicon stacking breakthrough: The chip industry’s upward escape from Moore’s law
The semiconductor industry has spent decades chasing smaller transistors, squeezing ever more components onto flat silicon wafers until hitting a wall built by the laws of quantum mechanics. But researchers at the University of Illinois Urbana-Champaign have developed a way to stack high-performance silicon circuits directly on top of one another, and their process achieves near-perfect yields at temperatures low enough to finally make monolithic three-dimensional chips practical. This breakthrough could allow chipmakers to increase computing power without shrinking transistors any further, challenging the official story that the industry’s only path forward requires exotic new materials or abandoning silicon altogether.
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