Far-field optical properties of disordered dielectric nanoparticle arrays within T-matrix framework

2021 ◽  
Author(s):  
Krzysztof M. Czajkowski ◽  
Maria Bancerek ◽  
Tomasz J. Antosiewicz
Keyword(s):  
Optical Properties ◽  
Far Field ◽  
Nanoparticle Arrays ◽  
Dielectric Nanoparticle ◽  
T Matrix

Surface roughness and substrate induced symmetry-breaking: influence on the plasmonic properties of aluminum nanostructure arrays

Nanoscale ◽  
2020 ◽  
Author(s):  
Feifei ZHANG ◽  
Jérôme Plain ◽  
Davy Gerard ◽  
Jérôme Martin
Keyword(s):  
Surface Roughness ◽  
Optical Properties ◽  
Symmetry Breaking ◽  
Surface Topography ◽  
Metallic Nanoparticles ◽  
Far Field ◽  
Al Nanoparticles ◽  
Nanostructure Arrays

The surface topography is known to play an important role on the near- and far- field optical properties of metallic nanoparticles. In particular, aluminum (Al) nanoparticles are commonly fabricated through...

scholarly journals Acoustic and optical properties of a fast-spinning dielectric nanoparticle

2020 ◽  
Vol 101 (20) ◽  
Author(s):  
Daniel Hümmer ◽  
René Lampert ◽  
Katja Kustura ◽  
Patrick Maurer ◽  
Carlos Gonzalez-Ballestero ◽  
...  
Keyword(s):  
Optical Properties ◽  
Dielectric Nanoparticle

scholarly journals NEGATIVE REFRACTION AND SUBWAVELENGTH FOCUSING USING PHOTONIC CRYSTALS

2004 ◽  
Vol 18 (25) ◽  
pp. 1275-1291 ◽  
Author(s):  
EKMEL OZBAY ◽  
KAAN GUVEN ◽  
ERTUGRUL CUBUKCU ◽  
KORAY AYDIN ◽  
B. KAMIL ALICI
Keyword(s):  
Optical Properties ◽  
Photonic Crystals ◽  
Negative Refraction ◽  
Numerical Study ◽  
Effective Index ◽  
Index Of Refraction ◽  
Far Field ◽  
Two Dimensional ◽  
Flat Lens ◽  
Effective Index Of Refraction

In this article, we present an experimental and numerical study of novel optical properties of two-dimensional dielectric photonic crystals (PCs) which exhibit negative refraction. We investigate two mechanisms which utilize the band structure of the PC to generate a negative effective index of refraction (n eff <0) and demonstrate the negative refraction experimentally. To the isotropic extend of n eff , different PC slab structures are employed to focus the radiation of a point source. It is shown experimentally that the PC can generate an image of the source with subwavelength resolution in the vicinity of the PC interface. Using a different PC, one can also obtain a far field focusing. In the latter case, we explicitly show the flat lens behavior of the structure. These examples indicate that PC-based lenses can surpass limitations of conventional lenses and lead to novel optics applications.

Evolution of near- and far-field optical properties of Au bipyramids upon epitaxial deposition of Ag

Nanoscale ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 5402-5411 ◽  
Author(s):  
Min Xi ◽  
Björn M. Reinhard
Keyword(s):  
Optical Properties ◽  
Near Field ◽  
Optical Response ◽  
Silicon Substrates ◽  
Far Field ◽  
Epitaxial Deposition

The effect of composition and tip morphology on the far-field optical response of Ag–Au–Ag nanorods with Au bipyramid core is quantified, and the near-field associated with standing plasmon waves in nanorods on silicon substrates is investigated.

scholarly journals Java application for the superposition T-matrix code to study the optical properties of cosmic dust aggregates

2014 ◽  
Vol 185 (9) ◽  
pp. 2369-2379 ◽  
Author(s):  
P. Halder ◽  
A. Chakraborty ◽  
P. Deb Roy ◽  
H.S. Das
Keyword(s):  
Optical Properties ◽  
Cosmic Dust ◽  
Java Application ◽  
T Matrix

LINEAR AND NONLINEAR OPTICAL PROPERTIES OF GOLD NANOPARTICLES WITH BROKEN SYMMETRY

2006 ◽  
Vol 15 (01) ◽  
pp. 43-53 ◽  
Author(s):  
BRIAN K. CANFIELD ◽  
SAMI KUJALA ◽  
KAISA LAIHO ◽  
KONSTANTINS JEFIMOVS ◽  
TUOMAS VALLIUS ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Electron Beam Lithography ◽  
Nonlinear Optical ◽  
Optical Measurements ◽  
Broken Symmetry ◽  
Nanoparticle Arrays ◽  
Optical Responses ◽  
Optical Generation ◽  
Linear And Nonlinear

We describe our research involving arrays of gold nanoparticles fabricated with electron beam lithography. Small defects in the particles introduced during the fabrication process result in broken design symmetry. The broken symmetry renders the arrays chiral, and signatures of chirality can be observed in both the linear and nonlinear optical responses through precise polarization measurements. The defects enhance the local electric field, enabling more efficient nonlinear optical generation and therefore making nonlinear optical measurements more sensitive to their presence. We also discuss future objectives for clarifying the microscopic processes underlying the optical responses in gold nanoparticle arrays.

Nonlinear optical properties of Au/ZnO nanoparticle arrays

2008 ◽  
Vol 254 (7) ◽  
pp. 1900-1903 ◽  
Author(s):  
Tingyin Ning ◽  
Yueliang Zhou ◽  
Hong Shen ◽  
Heng Lu ◽  
Zhihui Sun ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Zno Nanoparticle ◽  
Nanoparticle Arrays
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