Prof. Yung Doug Suh Profile

Prof. Yung Doug Suh

Professor at UNIST (Ulsan Nat'l Inst. of Sci. & Tech.)

SPIE Involvement:

Conference Chair | Editor | Author

Proceedings Article | 9 September 2019 Paper

Chemical analysis of air pollutant particulate matters based on surface enhanced Raman spectroscopy (SERS)

Jeong Seop Lee, Yun Ahn, Jungwoo Kim, Jongwoo Kim, Sang Hwan Nam, Seong-Cho Yu, Hyeon Ho Shin, Taeyoung Jung, Eun-Ah Kim, Yung Doug Suh, Hyun Woo Kim, Hyeong-Ryeol Park

Proceedings Volume 11082, 110822A (2019) https://doi.org/10.1117/12.2529210

KEYWORDS: Nanoparticles, Gold, Chemical analysis, Surface enhanced Raman spectroscopy, Scattering, Raman spectroscopy, Light scattering, Raman scattering, Scanning electron microscopy, Spectroscopy

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Proceedings Article | 25 August 2017 Paper

Physical chemistry of Nanogap-Enhanced Raman Scattering (NERS)

Yung Doug Suh, Hyun Woo Kim

Proceedings Volume 10350, 103500I (2017) https://doi.org/10.1117/12.2275662

KEYWORDS: Plasmonics, Raman scattering, Nanostructures, Raman spectroscopy, Surface enhanced Raman spectroscopy, Electromagnetism, Optical properties, Particles, Chemistry, Metals

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Proceedings Article | 27 October 2016 Presentation + Paper

Sub-one-nanometer gap (SONG) for nanogap-enhanced Raman scattering (NERS)

Haemi Lee, Jung-Hoon Lee, Jwa-Min Nam, Yung Doug Suh

Proceedings Volume 9925, 99250J (2016) https://doi.org/10.1117/12.2239605

KEYWORDS: Nanoparticles, Plasmonics, Light scattering, Rayleigh scattering, Scattering, Plasmons, Polarization, Particles, Laser scattering, Scatter measurement

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Proceedings Article | 5 October 2015 Presentation

Live cell imaging using Au-NNP (Nanobridged Nanogap Particles) (Presentation Recording)

Yung Doug Suh

Proceedings Volume 9554, 955416 (2015) https://doi.org/10.1117/12.2189738

KEYWORDS: Particles, Live cell imaging, Raman spectroscopy, Plasmonics, Computer programming, Video, Nanoimaging, Nanospectroscopy, Current controlled current source

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Proceedings Article | 28 August 2014 Paper

Correlation studies between localized surface plasmons and surface-enhanced Raman scattering of Gold-Silver NanoDumbbells (GSNDs) at the single-particle and single-molecule level

Haemi Lee, Jung-Hoon Lee, Seung Min Jin, Jwa-Min Nam, Yung Doug Suh

Proceedings Volume 9169, 916906 (2014) https://doi.org/10.1117/12.2062558

KEYWORDS: Nanostructures, Plasmonics, Rayleigh scattering, Molecules, Raman scattering, Electromagnetism, Polarization, Gold, Surface plasmons, Scattering

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Proceedings Article | 24 October 2012 Paper

Luminescence/magnetic resonance imaging and photodynamic therapy based on upconverting nanoparticles

Yong Il Park, Hyung Min Kim, Jeong Hyun Kim, Kyung Chul Moon, Byeongjun Yoo, Kang Taek Lee, Soo-Young Yoon, Yung Doug Suh, Sung Ho Lee, Taeghwan Hyeon

Proceedings Volume 8548, 85482H (2012) https://doi.org/10.1117/12.999411

KEYWORDS: Tumors, Photodynamic therapy, Magnetic resonance imaging, In vivo imaging, Luminescence, Nanoparticles, Magnesium, Oxygen, Upconversion, Image enhancement

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Proceedings Article | 19 June 2003 Paper

Nanosurface enhanced Raman scattering fluctuation dynamics

Leyun Zhu, Gregory Schenter, Miodrag Micic, Yung Suh, Nicholas Klymyshyn, H. Lu

Proceedings Volume 4962, (2003) https://doi.org/10.1117/12.478914

KEYWORDS: Molecules, Raman spectroscopy, Surface enhanced Raman spectroscopy, Nanoparticles, Silver, Raman scattering, Finite element methods, Particles, Molecular interactions, Optical spheres

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Here, we report our results on excitation intensity and nanoscale Ag cluster dependent spectral fluctuation dynamics of surface enhanced Raman scattering. We have studied single-Ag-cluster surface enhanced Raman scattering (SERS) intensity fluctuations under low molecule surface coverage of rhodamine 6G (R6G) and cytochrome c. By applying both experimental and theoretical approaches, we observed that spectral fluctuation phenomena are associated with SERS not only from single-molecule loaded nanoclusters but also from submonolayer molecule loaded nanoclusters. The nanoscale confinement of the local electric field enhancement under the laser excitation defines the SERS fluctuation. A new AFM-coupled two-channel photon time-stamping system, enabling in situ correlation of the topographic and spectroscopic information for single nanoparticle clusters, was used to record Raman intensity fluctuation trajectories at sub-μs resolution. Experimentally, we found that SERS fluctuation dynamics are highly inhomogeneous amongst nanocluster interstitial sites. Although the fluctuation above ~50 W/cm² excitation is dominated by photoinduced processes, spontaneous fluctuation can be observed at lower excitation intensity. Although a single Raman-active molecule confined within the volume of an electric field excitation gives a significant Raman spectral fluctuation, observation of the fluctuation alone may not be sufficient in identifying a single-molecule origin of a Raman spectrum. The Raman signal comes predominately from the localized electric field enhancement at interstitial sites, occuring in a very small volume at nanoscale (capable of holding only one or a few molecules), as estimated from finite-element methods simulations of an electric field enhancement using a classical electrodynamics approach. Such a small number of molecules, which are presumably under discrete diffusion and exposed to interactions with a locally strong electric field, results in the observed Raman fluctuation. The fluctuation autocorrelation amplitude is proportional to the reverse number of molecules confined at the volume of the electric field enhancement.

Showing 5 of 7 publications

SPIE Conference Volume | 19 October 2023

Enhanced Spectroscopies and Nanoimaging 2023

SPIE Conference Volume | 7 November 2022

Enhanced Spectroscopies and Nanoimaging 2022

SPIE Conference Volume | 15 September 2021

Enhanced Spectroscopies and Nanoimaging 2021

SPIE Conference Volume | 6 October 2020

Enhanced Spectroscopies and Nanoimaging 2020

Conference Committee Involvement (16)

Enhanced Spectroscopies and Nanoimaging 2024

18 August 2024 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2023

20 August 2023 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2022

21 August 2022 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2021

2 August 2021 | San Diego, California, United States

Enhanced Spectroscopies and Nanoimaging 2020

24 August 2020 | Online Only, California, United States

Nanoimaging and Nanospectroscopy VI

19 August 2018 | San Diego, California, United States

Nanoimaging and Nanospectroscopy V

6 August 2017 | San Diego, California, United States

Nanoimaging and Nanospectroscopy IV

28 August 2016 | San Diego, California, United States

Nanoimaging and Nanospectroscopy III

9 August 2015 | San Diego, California, United States

Nanoimaging and Nanospectroscopy II

17 August 2014 | San Diego, California, United States

Nanoimaging and Nanospectroscopy

27 August 2012 | San Diego, California, United States

Plasmonics: Nanoimaging, Nanofabrication, and Their Applications III

28 August 2007 | San Diego, California, United States

Plasmonics: Metallic Nanostructures and Their Optical Properties V

26 August 2007 | San Diego, California, United States

Plasmonics: Nanoimaging, Nanofabrication, and their Applications II

16 August 2006 | San Diego, California, United States

Plasmonics: Metallic Nanostructures and their Optical Properties IV

13 August 2006 | San Diego, California, United States

Plasmonic Nano-imaging and Nanofabrication

3 August 2005 | San Diego, California, United States

Showing 5 of 16 Conference Committees

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