scholarly journals Surface Plasmon Enhanced Chemical Reactions on Metal Nanostructures

2020 ◽  
Author(s):  
Rajkumar Devasenathipathy ◽  
De-Yin Wu ◽  
Zhong-Qun Tian
Keyword(s):  
Surface Plasmon ◽  
Chemical Reactions ◽  
Metal Nanostructures

“Seeing” the Resonant SPP Modes Confined in Metal Nanocavity via Cathodoluminescne Spectroscopy

2014 ◽  
Vol 1659 ◽  
pp. 83-94
Author(s):  
Liu Chuanpu ◽  
Zhu Xinli ◽  
Zhang Jiasen ◽  
Xu Jun ◽  
Yu Dapeng
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Strong Field ◽  
Three Dimensional ◽  
Metal Nanostructures ◽  
Feature Size ◽  
Practical Applications ◽  
Plane Field ◽  
Out Of Plane ◽  
Plasmon Polaritons

ABSTRACT:Surface plasmon polaritons (SPPs), which are coupled excitations of electrons bound to a metal-dielectric interface, show great potential for application in future nanoscale photonic systems due to the strong field confinement at the nanoscale, intensive local field enhancement, and interplay between strongly localized and propagating SPPs. The fabrication of sufficiently smooth metal surface with nanoscale feature size is crucial for SPPs to have practical applications. A template stripping (ST) method combined with PMMA as a template was successfully developed to create extraordinarily smooth metal nanostructures with a desirable feature size and morphology for plasmonics and metamaterials. The advantages of this method, including the high resolution, precipitous top-to bottom profile with a high aspect ratio, and three-dimensional characteristics, make it very suitable for the fabrication of plasmonic structures. By using this ST method, boxing ring-shaped nanocavities have been fabricated and the confined modes of surface plasmon polaritons in these nanocavities have been investigated and imaged by using cathodoluminescence (CL) spectroscopy, which has been turned out to be a powerful means to characterize the resonant SPPs modes confined in metal nanocavities [1∼5] . The mode of the out-of-plane field components of surface plasmon polaritons dominates the experimental mode patterns, indicating that the electron beam locally excites the out-of-plane field component of surface plasmon polaritons. Quality factors can be directly acquired from the spectra induced by the ultrasmooth surface of the cavity and the high reflectivity of the silver (Ag) reflectors. Because of its three-dimensional confined characteristics and the omnidirectional reflectors, the nanocavity exhibits a small modal volume, small total volume, rich resonant modes, and flexibility in mode control. Numerous applications, such as plasmonic filter, nanolaser, and efficient light-emitting devices, can be expected to arise from these developments.

Fine-tuning of localized surface plasmon resonance of metal nanostructures from near-Infrared to blue prepared by nanosphere lithography

2020 ◽  
Vol 128 (23) ◽  
pp. 233104
Author(s):  
Mahfujur Rahaman ◽  
Stefan Moras ◽  
Lu He ◽  
Teresa I. Madeira ◽  
Dietrich R. T. Zahn
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Infrared ◽  
Nanosphere Lithography ◽  
Fine Tuning ◽  
Localized Surface Plasmon ◽  
Metal Nanostructures

scholarly journals Recent Advances of Plasmonic Nanoparticles and their Applications

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1833 ◽  
Author(s):  
Jianxun Liu ◽  
Huilin He ◽  
Dong Xiao ◽  
Shengtao Yin ◽  
Wei Ji ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Metallic Nanoparticles ◽  
Upconversion Luminescence ◽  
Plasmonic Nanoparticles ◽  
Metal Nanostructures ◽  
Recent Advances ◽  
Past Half Century ◽  
Past Half

In the past half-century, surface plasmon resonance in noble metallic nanoparticles has been an important research subject. Recent advances in the synthesis, assembly, characterization, and theories of traditional and non-traditional metal nanostructures open a new pathway to the kaleidoscopic applications of plasmonics. However, accurate and precise models of plasmon resonance are still challenging, as its characteristics can be affected by multiple factors. We herein summarize the recent advances of plasmonic nanoparticles and their applications, particularly regarding the fundamentals and applications of surface plasmon resonance (SPR) in Au nanoparticles, plasmon-enhanced upconversion luminescence, and plasmonic chiral metasurfaces.

Scanning probe microscopy for real-space observations of local chemical reactions induced by a localized surface plasmon

2019 ◽  
Vol 21 (36) ◽  
pp. 19720-19731 ◽  
Author(s):  
Emiko Kazuma ◽  
Yousoo Kim
Keyword(s):  
Surface Plasmon ◽  
Chemical Reactions ◽  
Scanning Probe Microscopy ◽  
Real Space ◽  
Scanning Probe ◽  
Localized Surface Plasmon ◽  
Probe Microscopy ◽  
Microscopy Techniques ◽  
Space Observations

Scanning probe microscopy techniques providing mechanistic insights into chemical reactions induced by localized surface plasmon on the basis of real-space observations.

scholarly journals Enhancing SERS Intensity by Coupling PSPR and LSPR in a Crater Structure with Ag Nanowires

2021 ◽  
Vol 11 (24) ◽  
pp. 11855
Author(s):  
Jae-Hoon Ryu ◽  
Ha Young Lee ◽  
Jeong-Yeon Lee ◽  
Han-Sol Kim ◽  
Sung-Hyun Kim ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Spray Coating ◽  
Fine Tuning ◽  
Localized Surface Plasmon ◽  
Metal Nanostructures ◽  
Ag Nanowires ◽  
Metal Microstructure ◽  
Sers Intensity

The sensitive characteristics of surface-enhanced Raman scattering (SERS) can be applied to various fields, and this has been of interest to many researchers. Propagating surface plasmon resonance (PSPR) was initially utilized but, recently, it has been studied coupled with localized surface plasmon resonance that occurs in metal nanostructures. In this study, a new type of metal microstructure, named crater, was used for generating PSPR and Ag nanowires (AgNWs) for the generation of LSPR. A crater structure was fabricated on a GaAs (100) wafer using the wet chemical etching method. Then, a metal film was deposited inside the crater, and AgNWs were uniformly coated inside using the spray coating method. Metal films were used to enhance the electromagnetic field when coupled with AgNWs to obtain a high SERS intensity. The SERS intensity measured inside the crater structure with deposited AgNWs was up to 17.4 times higher than that of the flat structure with a deposited Ag film. These results suggest a new method for enhancing the SERS phenomenon, and it is expected that a larger SERS intensity can be obtained by fine-tuning the crater size and diameter and the length of the AgNWs.

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