Logic Gate


The ever-increasing demand for faster computers is tackled by reducing the size of device, but this is becoming almost impossible to continue. To improve the speed of computers, a solution is to increase the number of operations performed per device. On top of that, the device needs to achieve fast speed of operations. Here, we control the process of melting to perform logic operations. Ultrafast speed of melting and numerous operations were achieved. Computer simulation and electrical measurement show the origin and kinetics of melting. These advances open the doorway for developing computers that could potentially perform calculations at well beyond current processing rates.


1. D. Loke, J. M. Skelton, W. J. Wang, T. H. Lee, R. Zhao, T. C. Chong, S. R. Elliott. Ultrafast Phase-Change Logic Device Driven by Melting Processes. Proc. Nat. Acad. Sci. USA 11, 13272-13277 (2014).

Media coverage



• Ultra Fast Computing Possible With New Material – Yahoo! News UK

• Phase-Change Materials Can Make Computers Faster, Greener – Nature World News

• New Method May Lead To Faster, Smaller Computers – The Economic Times

• Ultra Fast Computing Possible With New Material – International Business Times

• Computers 1,000 Times Faster? Quick-Change Materials Break Silicon Speed Limit For Computers – Science Daily

• New ‘Phase-Change’ Devices Can Make Computers 1,000 Times Faster – Science Alert

• Phase-Change Materials And Correlated Oxides Gain Ground On Silicon For Top Spot In Future Electronics – The American Ceramics Society

• Quick-Change Materials Break The Silicon Speed Limit For Computers – Phys.Org

• Phase Change Memory Lets A Single Bit Act As Different Logic Gates – Ars Technica

• Phase Change Materials Could Enable Energy Efficient Computing – New Electronics

• Now, Get Faster, Smaller, Greener Computers With ‘Phase-Change Materials’ – International Technology