Nanoelectromechanical graphene switches for the multi-valued logic systems
- 주제(키워드) nanoelectromechanical system , multi-valued logic circuit , nanoelectromechanical switch , quaternary , graphene
- 주제(기타) Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied
- 설명문(일반) [Shin, Dong Hoon; Lee, Sang Wook] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea; [Kim, Hakseong] Korea Adv Inst Sci & Technol, Dept Phys, Daejeon 34141, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 IOP PUBLISHING LTD
- 발행년도 2019
- URI http://www.dcollection.net/handler/ewha/000000160449
- 본문언어 영어
- Published As http://dx.doi.org/10.1088/1361-6528/ab260f
- PubMed https://pubmed.ncbi.nlm.nih.gov/31151122
초록/요약
Graphene based multi-valued nanoelectromechanical switches are suggested and demonstrated. The device structure having multiple contact sites with different heights under the doubly clamped suspended beam provides multiple contacts to be formed sequentially from the taller electrode to the shorter electrode, which results in multiple logic states. Based on the finite element method simulation, we found that our device characteristics, such as turn-on and threshold voltages, are highly governed by the device design. The proof-of-concept device realized by using a newly developed 3D fabrication method based on the e-beam lithography expresses quaternary logic states successfully with a high stability in repetitive operations.
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