The emergence of artificial intelligence and machine
learning techniques is changing the world dramatically with novel
applications such as internet of things, autonomous vehicles,
real-time imaging processing and big data analytics in healthcare.
In 2020, the global data volume is estimated to reach 44
Zettabytes, and it will continue to grow beyond the current
capacity of computing and storage devices. At the same time, the
related electricity consumption will increase 15 times by 2030,
swallowing 8% of the global energy demand. Therefore, reducing
energy consumption and increasing speed of information storage
technology is in urgent need.
