scholarly journals Carrier and refractive index dynamics in core-shell nanolasers grown on silicon during spontaneous and stimulated emission

2019 ◽  
Author(s):  
Tomasz J. Ochalski ◽  
Juan S. D. Morales ◽  
Shumithira Gandan ◽  
Diana L. Huffaker ◽  
Hyunseok Kim ◽  
...  
Keyword(s):  
Refractive Index ◽  
Stimulated Emission ◽  
Core Shell

scholarly journals Numerical Study on the Surface Plasmon Resonance Tunability of Spherical and Non-Spherical Core-Shell Dimer Nanostructures

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1728
Author(s):  
Joshua Fernandes ◽  
Sangmo Kang
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Aspect Ratio ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Shell Thickness ◽  
Numerical Study ◽  
Field Enhancement ◽  
Core Shell

The near-field enhancement and localized surface plasmon resonance (LSPR) on the core-shell noble metal nanostructure surfaces are widely studied for various biomedical applications. However, the study of the optical properties of new plasmonic non-spherical nanostructures is less explored. This numerical study quantifies the optical properties of spherical and non-spherical (prolate and oblate) dimer nanostructures by introducing finite element modelling in COMSOL Multiphysics. The surface plasmon resonance peaks of gold nanostructures should be understood and controlled for use in biological applications such as photothermal therapy and drug delivery. In this study, we find that non-spherical prolate and oblate gold dimers give excellent tunability in a wide range of biological windows. The electromagnetic field enhancement and surface plasmon resonance peak can be tuned by varying the aspect ratio of non-spherical nanostructures, the refractive index of the surrounding medium, shell thickness, and the distance of separation between nanostructures. The absorption spectra exhibit considerably greater dependency on the aspect ratio and refractive index than the shell thickness and separation distance. These results may be essential for applying the spherical and non-spherical nanostructures to various absorption-based applications.

scholarly journals Boosting figures of merit of cavity plasmon resonance based refractive index sensing in dielectric-metal core-shell resonators

2016 ◽  
Vol 24 (17) ◽  
pp. 19895 ◽  
Author(s):  
Zhiqin Li ◽  
Ren Sun ◽  
Chi Zhang ◽  
Mingjie Wan ◽  
Ping Gu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Plasmon Resonance ◽  
Core Shell ◽  
Metal Core ◽  
Figures Of Merit ◽  
Refractive Index Sensing

scholarly journals Double-exponential refractive index sensitivity of metal–semiconductor core–shell nanoparticles: the effects of dual-plasmon resonances and red-shift

RSC Advances ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 1700-1705 ◽  
Author(s):  
Hailong Zhang ◽  
Pengfei Cao ◽  
Jie Dou ◽  
Lin Cheng ◽  
Tiaoming Niu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Red Shift ◽  
Localized Surface Plasmon ◽  
Core Shell ◽  
Refractive Index Sensitivity ◽  
Shell Nanoparticles ◽  
Double Exponential ◽  
New Type ◽  
Index Sensitivity ◽  
Core Shell Nanoparticles

We present a new type of localized surface plasmon resonance (LSPR) sensor whose refractive index sensitivity can be improved by greatly increasing the plasmon wavelength red-shift of metal–semiconductor core–shell nanoparticles (CSNs).

Effect of Annealing Temperature on The Refrective Index and Dielectric Properties of TiO2/MnO2 CORE/SHELL Thin Films

2014 ◽  
Vol 6 (3) ◽  
pp. 1227-1232
Author(s):  
Peter Ekuma Agbo
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Refractive Index ◽  
Dielectric Properties ◽  
Dielectric Property ◽  
Annealing Temperature ◽  
Xrd Analysis ◽  
Core Shell ◽  
Structural Nature ◽  
Deposited Film

Thin film of the form TiO2/MnO2 was deposited using the chemical bath method. The deposited thin films were annealed at temperatures of in order to investigate the effect of annealing temperature on the refractive index and dielectric property. To do this the films were characterized using UV-Spectrophotometer and XRD analysis was also carriedout to study the structural nature of the deposited film. Our results reaveled that annealing has profound effect on theindex of refraction and the dielectric properties.  

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