Source: Research highlight from MANA, the International Center for Materials Nanoarchitectonics at NIMS, Tsukuba, Japan.
Tsukuba, Japan, 17 February 2017
Subject line: MANA Research Highlights: Atomic Switch Reaching Outer Space
(Tsukuba, 17 February 2017) 10-year journey of the atomic switch in nanospace is finally reaching practical use in space satellites several thousand kilometers above earth
MANA Research Highlights Vol. 31 (17 February 2017)
In 2001, the atomic switch was invented through an unconventional combination of a state-of-the-art scanning tunneling microscope (STM) and a small piece of Ag2S ion/electron mixed conductor. Generation and annihilation of metallic nanofilament in a tunnel gap (about 1 nm) enabled quantized and nonvolatile conductance switching with a low operation voltage that is impossible with other methods. The atomic switch marked a beginning of a new paradigm, namely nanoelectronics achieved by ions, which was succeeded in the derivative technologies: memristor and resistive random access memory. In conventional semiconductor technology, ions had long been nothing but troublesome impurities causing unstable operations; however, they are now playing a leading role in next-generation information and communication technology.
Masakazu Aono (Director-General, MANA) and his co-workers invented the atomic switch and have been developing the technology with several researchers at MANA/NIMS for about 10 years in collaboration with NEC Corp. Now, the atomic switch has come into practical use as the “NEC AtomSW-FPGA (Atomic Switch-Field Programmable Gate Array),” which will soon be used in robots and space satellites. …