scholarly journals Multipolar plasmon modes of sodium sphere: constrain on the minimal sphere radius

2005 ◽  
Author(s):  
K. Kolwas ◽  
A. Derkatchova
Keyword(s):  
Sphere Radius ◽  
Minimal Sphere ◽  
Plasmon Modes

scholarly journals Fast Overlap Detection between Hard-Core Colloidal Cuboids and Spheres. The OCSI Algorithm

Algorithms ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 72
Author(s):  
Luca Tonti ◽  
Alessandro Patti
Keyword(s):  
Colloidal Particles ◽  
Dynamic Properties ◽  
Wide Spectrum ◽  
Three Dimensional ◽  
Hard Core ◽  
Detection Algorithm ◽  
Three Dimensional Objects ◽  
Aggregation Behaviour ◽  
Sphere Radius ◽  
User Friendly

Collision between rigid three-dimensional objects is a very common modelling problem in a wide spectrum of scientific disciplines, including Computer Science and Physics. It spans from realistic animation of polyhedral shapes for computer vision to the description of thermodynamic and dynamic properties in simple and complex fluids. For instance, colloidal particles of especially exotic shapes are commonly modelled as hard-core objects, whose collision test is key to correctly determine their phase and aggregation behaviour. In this work, we propose the Oriented Cuboid Sphere Intersection (OCSI) algorithm to detect collisions between prolate or oblate cuboids and spheres. We investigate OCSI’s performance by bench-marking it against a number of algorithms commonly employed in computer graphics and colloidal science: Quick Rejection First (QRI), Quick Rejection Intertwined (QRF) and a vectorized version of the OBB-sphere collision detection algorithm that explicitly uses SIMD Streaming Extension (SSE) intrinsics, here referred to as SSE-intr. We observed that QRI and QRF significantly depend on the specific cuboid anisotropy and sphere radius, while SSE-intr and OCSI maintain their speed independently of the objects’ geometry. While OCSI and SSE-intr, both based on SIMD parallelization, show excellent and very similar performance, the former provides a more accessible coding and user-friendly implementation as it exploits OpenMP directives for automatic vectorization.

Terahertz Lasing with Weak Plasmon Modes in Periodic Graphene Structures

2021 ◽  
Vol 15 (3) ◽  
Author(s):  
Denis V. Fateev ◽  
Olga V. Polischuk ◽  
Konstantin V. Mashinsky ◽  
Ilya M. Moiseenko ◽  
Mikhail Yu. Morozov ◽  
...  
Keyword(s):  
Graphene Structures ◽  
Plasmon Modes

Unveiling breathing plasmon modes in aluminum metal–insulator–metal cavities by cathodoluminescence

2020 ◽  
Vol 22 (3) ◽  
pp. 035003
Author(s):  
Li Li ◽  
Daping Zhao ◽  
Jiang Fan ◽  
Rong Huang ◽  
Wei Wu ◽  
...  
Keyword(s):  
Metal Insulator ◽  
Aluminum Metal ◽  
Metal Insulator Metal ◽  
Plasmon Modes

Lubricating motion of a sphere towards a thin porous slab with Saffman slip condition

2019 ◽  
Vol 867 ◽  
pp. 949-968 ◽  
Author(s):  
Sondes Khabthani ◽  
Antoine Sellier ◽  
François Feuillebois
Keyword(s):  
Slip Length ◽  
Solid Sphere ◽  
Slip Condition ◽  
Darcy Law ◽  
Slab Thickness ◽  
Wide Range ◽  
Sphere Radius ◽  
Permeability Parameter ◽  
Interface Slip ◽  
Range Of Values

Near-contact hydrodynamic interactions between a solid sphere and a plane porous slab are investigated in the framework of lubrication theory. The size of pores in the slab is small compared with the slab thickness so that the Darcy law holds there. The slab is thin: that is, its thickness is small compared with the sphere radius. The considered problem involves a sphere translating above the slab together with a permeation flow across the slab and a uniform pressure below. The pressure is continuous across both slab interfaces and the Saffman slip condition applies on its upper interface. An extended Reynolds-like equation is derived for the pressure in the gap between the sphere and the slab. This equation is solved numerically and the drag force on the sphere is calculated therefrom for a wide range of values of the slab interface slip length and of the permeability parameter $\unicode[STIX]{x1D6FD}=24k^{\ast }R/(e\unicode[STIX]{x1D6FF}^{2})$, where $k^{\ast }$ is the permeability, $e$ is the porous slab thickness, $R$ is the sphere radius and $\unicode[STIX]{x1D6FF}$ is the gap. Moreover, asymptotics expansions for the pressure and drag are derived for high and low $\unicode[STIX]{x1D6FD}$. These expansions, which agree with the numerics, are also handy formulae for practical use. All results match with those of other authors in particular cases. The settling trajectory of a sphere towards a porous slab in a fluid at rest is calculated from these results and, as expected, the time for reaching the slab decays for increasing slab permeability and upper interface slip length.

Quantum Engineering of Plasmon Modes

2020 ◽  
Author(s):  
A. Haky ◽  
A. Vasanelli ◽  
Y. Todorov ◽  
Gregoire Beaudoin ◽  
Konstantinos Pantzas ◽  
...  
Keyword(s):  
Plasmon Modes

Coupling of Er light emissions to plasmon modes on In2O3: Sn nanoparticle sheets in the near-infrared range

2014 ◽  
Vol 105 (4) ◽  
pp. 041903 ◽  
Author(s):  
Hiroaki Matsui ◽  
Wasanthamala Badalawa ◽  
Takayuki Hasebe ◽  
Shinya Furuta ◽  
Wataru Nomura ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Range ◽  
Near Infrared Range ◽  
Sn Nanoparticle ◽  
Plasmon Modes

Raman Study of the Phonon-Plasmon Modes in the Short Period GaAs/AlAs Superlattices

1993 ◽  
Vol 32-33 ◽  
pp. 583-588 ◽  
Author(s):  
M.D. Efremov ◽  
Vladimir A. Volodin ◽  
V.V. Bolotov
Keyword(s):  
Short Period ◽  
Raman Study ◽  
Plasmon Modes

Minimal sphere bundles in Euclidean spheres

1994 ◽  
Vol 53 (1) ◽  
pp. 75-102 ◽  
Author(s):  
Claudio Gorodski
Keyword(s):  
Minimal Sphere ◽  
Euclidean Spheres
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