Optical Absorption of Dye Molecules in a Spherical Shell Geometry

2018 ◽  
Vol 122 (33) ◽  
pp. 19110-19115 ◽  
Author(s):  
Baptiste Auguié ◽  
Eric C. Le Ru
Keyword(s):  
Optical Absorption ◽  
Spherical Shell ◽  
Dye Molecules ◽  
Shell Geometry

The Onset of Plastic Yielding in a Spherical Shell Compressed by a Rigid Flat

2010 ◽  
Vol 78 (1) ◽  
Author(s):  
Longqiu Li ◽  
Izhak Etsion ◽  
Andrey Ovcharenko ◽  
Frank E. Talke
Keyword(s):  
Spherical Shell ◽  
Normal Load ◽  
Empirical Relation ◽  
Solid Sphere ◽  
Plastic Yielding ◽  
Element Analysis ◽  
Shell Parameter ◽  
Shell Geometry ◽  
Limiting Value ◽  
Critical Contact

The onset of plastic yielding in a spherical shell loaded by a rigid flat is analyzed using finite element analysis. The effect of spherical shell geometry and material properties on the critical normal load, critical interference, and critical contact area, at the onset of plastic yielding, is investigated and the location where plastic yielding first occurs is determined. A universal dimensionless shell parameter, which controls the behavior of the spherical shell, is identified. An empirical relation is found for the load-interference behavior of the spherical shell prior to its plastic yielding. A limiting value of the dimensionless shell parameter is identified above which the shell behaves like a solid sphere.

A numerical study of dynamo action as a function of spherical shell geometry

2005 ◽  
Vol 236 (1-2) ◽  
pp. 542-557 ◽  
Author(s):  
M.H. Heimpel ◽  
J.M. Aurnou ◽  
F.M. Al-Shamali ◽  
N. Gomez Perez
Keyword(s):  
Spherical Shell ◽  
Numerical Study ◽  
Dynamo Action ◽  
Shell Geometry

Quantum size effect on optical absorption in a small spherical shell

1995 ◽  
Vol 51 (15) ◽  
pp. 10119-10126 ◽  
Author(s):  
Mikio Eto ◽  
Kiyoshi Kawamura
Keyword(s):  
Optical Absorption ◽  
Size Effect ◽  
Spherical Shell ◽  
Quantum Size Effect ◽  
Quantum Size

THEORY OF OPTICAL ABSORPTION IN A SMALL SPHERICAL SHELL: INVESTIGATION OF QUANTUM-SIZE EFFECT

1996 ◽  
Vol 03 (01) ◽  
pp. 151-155 ◽  
Author(s):  
MIKIO ETO ◽  
KIYOSHI KAWAMURA
Keyword(s):  
Optical Absorption ◽  
Size Effect ◽  
Resonant Frequency ◽  
Spherical Shell ◽  
Random Phase ◽  
System Size ◽  
Quantum Size Effect ◽  
Shell Shape ◽  
Hartree Fock ◽  
Quantum Size

To investigate the quantum-size effect on optical absorption spectra in a small metallic particle of a spherical shell shape, first-principles calculations are performed based on the Kubo formula. The resonant frequency of collective modes and their linewidth are studied systematically with Hartree-Fock and random-phase approximations, which are self-interaction-free methods. System-size dependence of the resonant frequency of the modes is in good agreement with the classical theory, while the linewidth reflects the quantum-size effect, which cannot be explained classically. The origin of the line broadening should be attributed to the Landau damping.

Effective control of the optical absorption properties of FeGa micro-nano spherical shell arrays

2022 ◽  
Vol 123 ◽  
pp. 111931
Author(s):  
Shilun Li ◽  
Hongliang Zhang ◽  
Tianle Wang ◽  
Jing Xu ◽  
Junlang Chen ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Spherical Shell ◽  
Effective Control ◽  
Absorption Properties

Numerical Analysis of a Spherical Shell Compressed by a Rigid Flat

2009 ◽  
Author(s):  
Longqiu Li ◽  
Izhak Etsion ◽  
Andrey Ovcharenko ◽  
Frank Talke
Keyword(s):  
Plastic Deformation ◽  
Spherical Shell ◽  
Material Properties ◽  
Normal Load ◽  
Solid Sphere ◽  
Element Analysis ◽  
Strong Function ◽  
Classical Shell Theory ◽  
Shell Parameter ◽  
Shell Geometry

The elastic-plastic contact between a spherical shell and a rigid flat is analyzed using finite element analysis. The effect of spherical shell geometry and material properties on the onset of plastic deformation is determined by finding the critical normal load and the critical interference which correspond to the onset of plastic yielding. The location of initial plastic deformation is identified as a function of material properties and spherical shell geometry. This work provides the dimensionless critical load as a function of the shell parameter λ = (t/R)*(E/Y), where t, R, E and Y are the spherical shell thickness, radius, Young’s modulus and yield strength, respectively. The numerical results are compared with the solid sphere model based on Hertz’s contact theory and classical shell theory in the elastic regime. The behavior of a spherical shell contacting a rigid flat plate is a strong function of the shell parameter λ.

Orthotropic Shallow Spherical Shell on a Kerr Foundation

1997 ◽  
Vol 119 (1) ◽  
pp. 131-133
Author(s):  
D. N. Paliwal ◽  
H. Kanagasabapathy ◽  
K. M. Gupta
Keyword(s):  
Spherical Shell ◽  
Shear Layer ◽  
Parametric Study ◽  
Shallow Spherical Shell ◽  
Static Behavior ◽  
Nonlinear Static ◽  
Foundation Parameters ◽  
Shell Geometry

Parametric study involving foundation parameters and shell geometry is carried out for nonlinear static behavior of an orthotropic shallow spherical shell on a Kerr foundation. Study shows that the deflection reduces if the shell curvature or the foundation parameters of the shear layer and the lower spring layer are increased. Shells with immovable edges are found to be more prone and vulnerable to changes in various parameters than those with movable edges.

Effect of gelation and ball milling on the optical absorption and emission of macrilon yellow dye molecules trapped in silica prepared by the sol–gel method

2000 ◽  
Vol 51-52 ◽  
pp. 659-666 ◽  
Author(s):  
L.L. Dı́az-Flores ◽  
J.J. Pérez-Bueno ◽  
F.J. Espinoza-Beltrán ◽  
J.F. Pérez-Robles ◽  
R. Ramı́rez-Bon ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Ball Milling ◽  
Sol Gel ◽  
Dye Molecules ◽  
Gel Method ◽  
Absorption And Emission ◽  
Sol Gel Method

Varying the spherical shell geometry in rotating thermal convection

2004 ◽  
Vol 98 (2) ◽  
pp. 153-169 ◽  
Author(s):  
F.M. Al-Shamali ◽  
M.H. Heimpel ◽  
J.M. Aurnou
Keyword(s):  
Spherical Shell ◽  
Thermal Convection ◽  
Shell Geometry

Nonlinear optical absorption in mixtures of dye molecules and ZnS nanoparticles

2017 ◽  
Vol 26 (04) ◽  
pp. 1750045 ◽  
Author(s):  
G. S. Boltaev ◽  
B. R. Sobirov ◽  
T. Usmanov ◽  
M. S. Smirnov ◽  
O. V. Ovchinnikov ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Zinc Sulfide ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Pyridinium Salt ◽  
Dye Molecules ◽  
Absorption Coefficients ◽  
Zns Nanoparticles ◽  
Nonlinear Optical Absorption ◽  
Nm Range

The nonlinear absorption in the mixtures of zinc sulfide quantum dot and some dyes are studied. The nonlinear absorption coefficients of the ZnS nanoparticles associated with various heterocyclic dyes [thiazine (thionine), xanthene (erythrosine), and carbocyanine (3,3[Formula: see text]-di-([Formula: see text]-sulfopropyl)-4,4[Formula: see text],5,5[Formula: see text]-dibenzo-9-ethylthiacarbocyaninebetaine pyridinium salt, DEC)] possessing optical absorption in the 500–680[Formula: see text]nm range were measured at the wavelengths of 1064[Formula: see text]nm and 532[Formula: see text]nm using 40 ps pulses and [Formula: see text]-scan technique.

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