National NanoFab Center (NNFC) , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
ACS Nano. 2017 Aug 22;11(8):7781-7789. doi: 10.1021/acsnano.7b01475. Epub 2017 Jul 24.
We present a fast, energy-efficient nano-thermomechanical encoding scheme for digital information storage and retrieval. Digital encoding processes are conducted by the bistable electrothermal actuation of a scalable nanobridge device. The electrothermal energy is highly concentrated by enhanced electron/phonon scattering and heat insulation in a sub-100 nm metallic layer. The efficient conversion of electrothermal energy into mechanical strain allows digital switching and programming processes within 60 ns at 0.75 V with a programming energy of only 54 pJ. Furthermore, this encoding scheme together with the thermally robust design enables data retention at temperatures up to 400 °C. These results suggest that the proposed nano-thermomechanical encoding method could contribute to low-power electronics and robust information storage/retrieval systems.
我们提出了一种快速、节能的纳米热机械编码方案，用于数字信息的存储和检索。数字编码过程通过可扩展纳米桥器件的双稳定电热致动来进行。在亚 100nm 的金属层中，通过增强的电子/声子散射和热隔离实现了对电热能的高度集中。电热能的高效转换为机械应变允许在 0.75V 下在 60ns 内进行数字开关和编程过程，编程能量仅为 54pJ。此外，这种编码方案与热稳定设计相结合，使数据在高达 400°C 的温度下得以保留。这些结果表明，所提出的纳米热机械编码方法可能有助于低功耗电子和稳健的信息存储/检索系统。
