IBM Creates Sub-1nm Chip, Stacks Transistors Vertically for Density Breakthrough

IBM has unveiled a significant breakthrough in semiconductor manufacturing, claiming the creation of the world's first chip technology below one nanometre. This innovation represents a crucial step in continuing the industry's drive towards denser, more powerful processors, an imperative for everything from artificial intelligence to high-performance computing.

The advance relies on a novel design known as a 'gate-all-around' architecture. Unlike traditional planar designs, this method involves stacking transistors vertically, effectively creating a 'block of flats' structure. This three-dimensional arrangement allows for far greater transistor density on a silicon wafer compared to current industry standards.

Current leading-edge chips, such as those produced by TSMC and Samsung, typically operate at around five nanometres. IBM's reported sub-1nm technology, though still in the research phase, theoretically allows for the packing of 50 billion transistors onto a chip no larger than a fingernail, offering substantial performance and efficiency gains.

However, the transition from laboratory prototype to mass production is a formidable challenge, typically spanning several years. IBM's announcement highlights the ongoing global competition in semiconductor development, an area of increasing geopolitical and economic importance, particularly concerning supply chain vulnerabilities and technological dominance.