Colloquium

  • Optoelectonic devices based on low-dimensional materials / 저차원 물질을 이용한 광학 소자 개발

  • Speaker : 남궁선(Seon Namgung)
    Affiliation : Ulsan National Institute of Science and Technology (UNIST)
    Date : December 4, 2019 4:00 PM
    Place : Bldg.110 Rm. N103
    Contact : kdpark@unist.ac.kr
    Host : 박경덕(Kyoung-Duck Park)
  • Abstract

  • 이번 콜로퀴움에서는 최근에 활발히 연구되고 있는 그래핀 등의 이차원 물질(2D materials)을 이용한 광소자 개발에 관한 최근 동향에 대하여 소개한다. 특히 빛을 원래 파장보다 훨씬 작은 수십 나노미터 사이즈에 가두는 플라즈몬과의 융합을 통한 소자개발과 이를 통한 초고속 데이터 광통신용 소자 개발에 대해서 소개한다. 또한 일차원(1D) 물질의 자기조립을 통한 소자개발과 이를 이용한 바이오 센서 및 세포 연구에 대해서도 간략히 소개한다.

     

    Even with atomic thickness, 2D materials, including graphene and TMDs, exhibit high light-matter interaction and unique optical properties such as high exciton binding energy, valley-specific circular polarization, and highly localized polaritons. Furthermore, recent extensive development of 2D materials growth/manipulation methods expedites the development of novel optoelectronic devices based on 2D materials. For stronger interaction with light within atomic/nanoscale dimension, the hybridization of 2D materials and plasmon, a quantum of collective electron oscillation in highly confined space, has also been studied. In this talk, we will overview recent development of optoelectronic devices based on 2D materials and their hybrid with metal plasmon as well as their potential applications such as ultrafast data communication on a chip. We will also discuss the fabrication of one-dimensional material based devices using self-assembly method and their biological applications such as biosensors and cellular engineering.