IBM has announced what it describes as a landmark achievement in semiconductor research: the development of the world’s first known chip technology operating below 1 nanometre. The breakthrough, if successfully scaled to commercial production, could mark a new era in computing power and energy efficiency, though the company cautions that a market-ready product remains years away.
What Does Sub-1nm Mean?
To understand the significance of IBM’s announcement, it helps to appreciate the scale involved. A single nanometre is one billionth of a metre — roughly ten times smaller than a strand of DNA. For decades, the semiconductor industry has measured progress by how small chip manufacturers can make the transistors packed onto a processor. Smaller transistors mean more of them can fit on a chip, enabling faster computation while consuming less energy.
The current commercial frontier sits at around 2 nanometres, a process node that top chipmakers including TSMC and Samsung have only recently brought to mass production. IBM’s claim to have demonstrated functioning technology below 1 nanometre would represent a substantial leap beyond that boundary.
A ‘Block of Flats’ Approach to Design
IBM researchers described their innovation using an architectural analogy, likening the new chip structure to a multi-storey apartment block. Rather than arranging transistors in a flat, two-dimensional layer, the new design stacks transistor components vertically, much like floors in a building. This three-dimensional arrangement allows more transistors to occupy a given footprint, achieving higher density without simply shrinking each individual component to physically impossible sizes.
This approach — known in technical circles as stacked nanosheet or complementary field-effect transistor architecture — has been a subject of research across the industry. IBM’s announcement suggests concrete progress in demonstrating the concept in working silicon.
The Road to Commercial Production
IBM was careful to temper enthusiasm with realism. The company acknowledged that translating a research demonstration into commercially viable, high-yield mass production is an entirely different challenge that has historically taken the semiconductor industry many years to solve. Manufacturing at sub-1nm scales introduces formidable obstacles in lithography, materials science, and thermal management.
Why This Matters for Everyday Technology
Advances in chip miniaturisation ultimately reach consumers in the form of faster smartphones, more efficient laptops, more capable AI systems, and lower energy bills for data centres. The AI industry in particular has placed enormous pressure on chip manufacturers to deliver ever-greater computational power per watt. IBM’s research breakthrough represents a meaningful step toward a future in which computing continues to grow more powerful without a corresponding explosion in energy consumption.
