Surface Plasmon Resonance Sensitivity of Metal Nanostructures:  Physical Basis and Universal Scaling in Metal Nanoshells

2007 ◽  
Vol 111 (47) ◽  
pp. 17451-17454 ◽  
Author(s):  
Prashant K. Jain ◽  
Mostafa A. El-Sayed
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Physical Basis ◽  
Metal Nanostructures ◽  
Universal Scaling ◽  
Metal Nanoshells

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.

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.

Scrutiny of Surface Plasmon Resonance Bands of Colloidal Cu and Cu-Ag Nanoparticles in Different Reaction Media for Stability Evaluation

2018 ◽  
Vol 52 ◽  
pp. 115-121
Author(s):  
Aung Chan Thar ◽  
Thaung Hlaing Win ◽  
Nyein Wint Lwin ◽  
Than Zaw Oo
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Chemical Reduction ◽  
Reaction Medium ◽  
Careful Examination ◽  
Metal Nanostructures ◽  
The Stability ◽  
Stability Time ◽  
Reaction Media

The copper nanoparticles (CuNPs) were developed in two different reaction media (distilled water (DW) and ethylene glycol (EG)) by chemical reduction method using two different stabilizers (polyethylene glycol (PEG) and polyvinyl pyrrolidone (PVP)). We carried out a careful examination of the time evolution of surface plasmon resonance (SPR) bands (specifically, peak positions and intensities) of colloidal CuNPs so as to evaluate their stability. In addition, the changing pattern of SPR peak positions and intensities during the stability time period was also investigated. Effects of stabilizer materials, stabilizer concentration, Ag capping and reaction medium on the stability of CuNPs colloids have been highlighted. The maximum stability of CuNPs is 4 hours with stabilizer PEG and is 4 days with PVP in DW. They, with PVP, extend up to 10 days in the different reaction medium (EG). The stability time of CuNPs in EG is further lengthened to 20 days in the presence of Ag capping (Cucore AgshellNPs). Thus a proper selection of the stabilizing/capping agent and the reaction medium is critical in determining the stability of CuNPs colloids. The benefits of stabilization of CuNPs for real world applications are immense and this study would help in examinning the stability of other novel plasmonic metal nanostructures.

Fabrication of sophisticated metal nanostructures for actively tunable plasmonic devices

Impact ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 54-56
Author(s):  
Hideyuki Mitomo
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Metal Nanostructures ◽  
Molecular Device ◽  
Fabrication Technique

Metal nanostructures show attractive properties such as surface plasmon resonance. To extend these properties for innovative devices, it is required to develop a fabrication technique for sophisticated metal nanostructures. At the Molecular Device Laboratory at Hokkaido University in Japan, a team of researchers is working on nanotechnology learning from nature to create powerful bio- or nano-devices with manifold applications.

scholarly journals Molecular plasmonics: light meets molecules at the nanoscale

2011 ◽  
Vol 369 (1950) ◽  
pp. 3483-3496 ◽  
Author(s):  
Andrea Csaki ◽  
Thomas Schneider ◽  
Janina Wirth ◽  
Norbert Jahr ◽  
Andrea Steinbrück ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Life Sciences ◽  
Localized Surface Plasmon ◽  
Metal Nanostructures ◽  
Conduction Electrons ◽  
Collective Oscillations

Certain metal nanoparticles exhibit the effect of localized surface plasmon resonance when interacting with light, based on collective oscillations of their conduction electrons. The interaction of this effect with molecules is of great interest for a variety of research disciplines, both in optics and in the life sciences. This paper attempts to describe and structure this emerging field of molecular plasmonics, situated between the molecular world and plasmonic effects in metal nanostructures, and demonstrates the potential of these developments for a variety of applications.

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