Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Directional Alignment and Printing of One Dimensional Nanomaterials Using the Combination of Microstructure and Hydrodynamic Force

마이크로 구조 및 동유체력을 이용한 나노와이어 미세 정렬 및 프린팅 기법

  • Chung, Yongwon (Nanobio Device Laboratory, School of Electrical & Electronic Engineering, Yonsei University) ;
  • Seo, Jungmok (Nanobio Device Laboratory, School of Electrical & Electronic Engineering, Yonsei University) ;
  • Lee, Sanggeun (Nanobio Device Laboratory, School of Electrical & Electronic Engineering, Yonsei University) ;
  • Kwon, Hyukho (Nanobio Device Laboratory, School of Electrical & Electronic Engineering, Yonsei University) ;
  • Lee, Taeyoon (Nanobio Device Laboratory, School of Electrical & Electronic Engineering, Yonsei University)
  • 정용원 (연세대학교 전기전자공학과) ;
  • 서정목 (연세대학교 전기전자공학과) ;
  • 이상근 (연세대학교 전기전자공학과) ;
  • 권혁호 (연세대학교 전기전자공학과) ;
  • 이태윤 (연세대학교 전기전자공학과)
  • Received : 2013.08.19
  • Accepted : 2013.10.07
  • Published : 2013.10.27
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Abstract

The printing of nanomaterials onto certain substrates is one of the key technologies behind high-speed interconnection and high-performance electronic devices. For the printing of next-generation electronic devices, a printing process which can be applied to a flexible substrate is needed. A printing process on a flexible substrate requires a lowtemperature, non-vacuum process due to the physical properties of the substrate. In this study, we obtained well-ordered Ag nanowires using modified gravure printing techniques. Ag nanowires are synthesized by a silver nitrate ($AgNO_3$) reduction process in an ethylene glycol solution. Ag nanowires were well aligned by hydrodynamic force on a micro-engraved Si substrate. With the three-dimensional structure of polydimethylsiloxane (PDMS), which has an inverse morphology relative to the micro-engraved Si substrate, the sub-micron alignment of Ag nanowires is possible. This technique can solve the performance problems associated with conventional organic materials. Also, given that this technique enables large-area printing, it has great applicability not only as a next-generation printing technology but also in a range of other fields.

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References

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