作者
Woo Young Kim, Hyeon-Don Kim, Teun-Teun Kim, Hyun-Sung Park, Kanghee Lee, Hyun Joo Choi, Seung Hoon Lee, Jaehyeon Son, Namkyoo Park, Bumki Min
发表日期
2016/1/27
期刊
Nature communications
卷号
7
期号
1
页码范围
10429
出版商
Nature Publishing Group UK
简介
Memory metamaterials are artificial media that sustain transformed electromagnetic properties without persistent external stimuli. Previous memory metamaterials were realized with phase-change materials, such as vanadium dioxide or chalcogenide glasses, which exhibit memory behaviour with respect to electrically/optically induced thermal stimuli. However, they require a thermally isolated environment for longer retention or strong optical pump for phase-change. Here we demonstrate electrically programmable nonvolatile memory metadevices realised by the hybridization of graphene, a ferroelectric and meta-atoms/meta-molecules, and extend the concept further to establish reconfigurable logic-gate metadevices. For a memory metadevice having a single electrical input, amplitude, phase and even the polarization multi-states were clearly distinguishable with a retention time of over 10 years at room …
学术搜索中的文章
WY Kim, HD Kim, TT Kim, HS Park, K Lee, HJ Choi… - Nature communications, 2016