한빛사논문
- 조회317
Won-Geun Kim1,2,†, Jong-Min Lee1,3,†, Younghwan Yang2,†, Hongyoon Kim2, Vasanthan Devaraj1, Minjun Kim4, Hyuk Jeong1, Eun-Jung Choi1, Jihyuk Yang5, Yudong Jang6, Trevon Badloe2, Donghan Lee4, Junsuk Rho2,7,8,*, Ji Tae Kim5,* and Jin-Woo Oh1,9,*
1BIT Fusion Technology Center, Pusan National University, Busan 46241, Republic of Korea
2Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
3Center of Nano Convergence Technology and School of Nanoconvergence Technology, Hallym University, Chuncheon 24252, Republic of Korea
4Department of Physics, Chungnam National University, Daejeon 34134, Republic of Korea
5Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
6Institute of Quantum Systems (IQS), Chungnam National University, Daejeon 34134, Republic of Korea
7Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
8POSCO-POSTECH-RIST Convergence Research Center for Flat Optics and Metaphotonics, Pohang 37673, Republic of Korea.
9Department of Nanoenergy Engineering, Pusan National University, Busan 46241, Republic of Korea
†These authors contributed equally to this work.
*Corresponding author
Abstract
Plasmonic nanoparticle clusters promise to support unique engineered electromagnetic responses at optical frequencies, realizing a new concept of devices for nanophotonic applications. However, the technological challenges associated with the fabrication of three-dimensional nanoparticle clusters with programmed compositions remain unresolved. Here, we present a novel strategy for realizing heterogeneous structures that enable efficient near-field coupling between the plasmonic modes of gold nanoparticles and various other nanomaterials via a simple three-dimensional coassembly process. Quantum dots embedded in the plasmonic structures display ∼56 meV of a blue shift in the emission spectrum. The decay enhancement factor increases as the total contribution of radiative and nonradiative plasmonic modes increases. Furthermore, we demonstrate an ultracompact diagnostic platform to detect M13 viruses and their mutations from femtoliter volume, sub-100 pM analytes. This platform could pave the way toward an effective diagnosis of diverse pathogens, which is in high demand for handling pandemic situations.
논문정보
- Research article
- 2022년 05월 (BRIC 등록일 2022-08-31)
- 국내(교신)+국외 연구진
- 바이오·의료융합 > 바이오센싱 및 나노바이오물질
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