It was not originally intended to compete with current technology in the sense of speed and practicality , as its structural properties are not suitable for scalable designs .
The metal - island implementation was the first fabrication technology created to demonstrate the concept of QCA .
QCA was not originally intended to compete with current technology in the sense of speed and practicality , as QCA 's structural properties are not suitable for scalable designs .
The metal - island implementation was the first fabrication technology created to demonstrate the concept of QCA .