Its open access and license free model differentiates the firm from other foundries. The prototyping platform uses industry-compatible, deep-UV projection lithography meaning users can seamlessly scale up production volumes with their preferred favorite commercial foundry. Cornerstone is a collaboration between three UK universities: University of Southampton (for wafer-scale processing); University of Glasgow (chip-level processing); and University of Surrey (ion implantation). It currently offers three different silicon-on-insulator platforms via a multi-project-wafer service.
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