scholarly journals Theoretical study of nanophotonic directional couplers comprising near-field-coupled metal nanoparticles

2011 ◽  
Vol 19 (8) ◽  
pp. 7885 ◽  
Author(s):  
Petter Holmström ◽  
Jun Yuan ◽  
Min Qiu ◽  
Lars Thylén ◽  
Alexander M. Bratkovsky
Keyword(s):  
Metal Nanoparticles ◽  
Theoretical Study ◽  
Near Field ◽  
Directional Couplers

scholarly journals Scanning near-field optical microscopy on dense random assemblies of metal nanoparticles

2013 ◽  
Vol 15 (12) ◽  
pp. 125001 ◽  
Author(s):  
M Schmid ◽  
J Grandidier ◽  
H A Atwater
Keyword(s):  
Optical Microscopy ◽  
Metal Nanoparticles ◽  
Near Field

Near field measurements of optical channel waveguides and directional couplers

1994 ◽  
Vol 65 (8) ◽  
pp. 947-949 ◽  
Author(s):  
Ahn Goo Choo ◽  
Howard E. Jackson ◽  
Udo Thiel ◽  
Gregory N. De Brabander ◽  
Joseph T. Boyd
Keyword(s):  
Near Field ◽  
Field Measurements ◽  
Optical Channel ◽  
Directional Couplers ◽  
Channel Waveguides

Theoretical study of an absorbing sample in infrared near-field spectromicroscopy

2004 ◽  
Vol 235 (4-6) ◽  
pp. 351-360 ◽  
Author(s):  
A. Dazzi ◽  
S. Goumri-Said ◽  
L. Salomon
Keyword(s):  
Theoretical Study ◽  
Near Field

Enhanced Plasmonic Behavior of Metal Nanoparticles Surrounded With Dielectric Shell

2019 ◽  
Author(s):  
Anil Yuksel ◽  
Michael Cullinan ◽  
Edward T. Yu ◽  
Jayathi Murthy
Keyword(s):  
Metal Nanoparticles ◽  
Near Infrared ◽  
Energy Transport ◽  
Near Field ◽  
Metal Nanoparticle ◽  
Infrared Wavelength ◽  
Laser Illumination ◽  
Dielectric Media ◽  
Dielectric Shell ◽  
Laser Sources

Abstract Metal nanoparticles have attracted intense attention due to their unique optical and thermal properties in various next generation applications such as micro-nano electronics and photonics. The near-field confinement between closely packed metal nanoparticles, which is enhanced due to their plasmonic behavior, creates high thermal energy densities under visible to near-infrared wavelength laser irradiation. As metal nanoparticles tend to be oxidized or change shape under laser illumination, resulting in nonlinear optical and thermal behavior, surrounding each metal nanoparticle with a dielectric shell could be a potential way to prevent these effects as well as to engineer their plasmonic behavior. In this study, we investigate energy transport within dimer and 4 nanoparticle (chain) configurations of 50 nm radius Au nanoparticles surrounded by dielectric shells under illumination from various laser sources in different dielectric media.

scholarly journals Study of Utilization of Embedded Metal Nanoparticles in Dielectric Thin Film for Humidity Sensing

2019 ◽  
Vol 10 (2) ◽  
pp. 155-161
Author(s):  
Hala J. El-Khozondar ◽  
Waleed S. Mohammed
Keyword(s):  
Metal Nanoparticles ◽  
Theoretical Study ◽  
Dynamic Range ◽  
Volume Fraction ◽  
Dielectric Thin Film ◽  
Reflected Light ◽  
Metal Type ◽  
Reflection Peak ◽  
Fabry Perot ◽  
Film Interface

Abstract This paper presents a theoretical study of the utilization of the shift in the reflection peak of the thin dielectric film with embedded metal nanoparticles (NPs) towards humidity and vapor applications. The presence of the NPs in the film results in a complex effective index. Hence, the reflected light at the superstrate-film interface causes a phase shift when the index of the surrounding is changed. This alters the reflected spectrum of the formed Fabry-Perot, for both the reflection peak wavelength and intensity. Here, the dynamic range of the proposed sensor is optimized through the variation of the film thickness and nanoparticle metal type, as well as the volume fraction.

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