DataVXACS Applied Nano MaterialsPaper
journal article·2023-02-24

Selective Mapping of Tip-Launched Near-Field Scattering of Surface Plasmon Polaritons for Retrieving Dispersion Relation in Silver Nanoflakes

Hwi Je Woo, Sangmin Ji, Jaewon Han, Seongwon Woo, Hyuntae Kim, Seonyeong Kim, Chang-Won Lee, Soobong Choi, Deok-Soo Kim, Mun Seok Jeong, Euyheon Hwang, Byungkwon Lim, Young Jae Song

ACS Applied Nano Materials· Volume 6· Issue 4
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Source abstract

Abstract

Scattering-type near-field scanning optical microscopy (s-NSOM) has been beneficial for observing various nano-optical phenomena by overcoming the spatial resolution diffraction limit, creating optical dispersion, and investigating optoelectronic systems. We used s-NSOM on mono-crystalline silver nanoflakes to selectively decompose tip-launched surface plasmon polariton (SPP) signals and suppress the undesired geometrical effects arising from the silver nanoflakes and s-NSOM tips. Comparing the Fourier transform analysis data from all the edges of silver nanoflakes, we successfully identified the momentum of tip-launched SPPs. We have conducted energy spectral measurements on mono-crystalline silver nanoflakes and applied a geometry-independent factor: tip-launched SPP. We neglected the additional complex contribution from various shapes of the nanoflakes in the visible-near infrared regime. These experimentally obtained momentums of SPPs have a good agreement with analytical calculations. We observed that the propagation of the SPP increases with a decrease in excitation energy even without additional destructive fabrications on the surface, although the surface quality of silver nanoflakes is affected by dirt and oxidation. This study provides a precise interpretation of the experimental studies on the various polariton studies using s-NSOM.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Plasmonic and Surface Plasmon Research · Near-Field Optical Microscopy · Gold and Silver Nanoparticles Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea

Department of Nano Science and Technology, Sungkyunkwan University, Suwon16419, Republic of Korea

School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon16419, Republic of Korea

Department of Physics, Incheon National University, Incheon22012, Republic of Korea

Institute of Advanced Optics and Photonics, Department of Applied Optics, School of Basic Sciences, Hanbat National University, Daejeon34158, Republic of Korea

Department of Physics, Sejong University, Seoul05006, Republic of Korea

Intelligent Sensor Convergence Research Center (ISCRC), Incheon National University, Incheon22012, Republic of Korea

Advanced Facility Center for Quantum Technology, Sungkyunkwan University, Suwon16419, Republic of Korea

Department of Physics and Department of Energy Engineering, Hanyang University, Seoul04763, Republic of Korea

Department of Nano Engineering, Sungkyunkwan University, Suwon16419, Republic of Korea

Funding

Ministry of Science and ICT, South Korea

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