Dielectric Environment Manipulation toward Versatile Light Scattering of High Refractive Index Nanoparticles

2018 ◽  
Vol 122 (45) ◽  
pp. 26177-26188
Author(s):  
Guanqiao Zhang ◽  
Chuwen Lan ◽  
Rui Gao ◽  
Yongzheng Wen ◽  
Ji Zhou
Keyword(s):  
Refractive Index ◽  
Light Scattering ◽  
High Refractive Index ◽  
Dielectric Environment

scholarly journals Optimum Forward Light Scattering by Spherical and Spheroidal Dielectric Nanoparticles with High Refractive Index

ACS Photonics ◽  
2015 ◽  
Vol 2 (7) ◽  
pp. 993-999 ◽  
Author(s):  
Boris S. Luk’yanchuk ◽  
Nikolai V. Voshchinnikov ◽  
Ramón Paniagua-Domínguez ◽  
Arseniy I. Kuznetsov
Keyword(s):  
Refractive Index ◽  
Light Scattering ◽  
High Refractive Index

scholarly journals Directional Fano resonances in light scattering by a high refractive index dielectric sphere

2016 ◽  
Vol 94 (12) ◽  
Author(s):  
Michael I. Tribelsky ◽  
Jean-Michel Geffrin ◽  
Amelie Litman ◽  
Christelle Eyraud ◽  
Fernando Moreno
Keyword(s):  
Refractive Index ◽  
Light Scattering ◽  
High Refractive Index ◽  
Fano Resonances ◽  
Dielectric Sphere

scholarly journals Highly Scattering Hierarchical Porous Polymer Microspheres with a High-Refractive Index Inorganic Surface for a Soft-Focus Effect

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2418
Author(s):  
Joonsik Yoon ◽  
Ji Hyun Lee ◽  
Jun Bae Lee ◽  
Jun Hyup Lee
Keyword(s):  
Refractive Index ◽  
Light Scattering ◽  
Tio2 Nanoparticles ◽  
High Refractive Index ◽  
Inorganic Materials ◽  
Porous Polymer ◽  
Hybrid Particles ◽  
Inorganic Hybrid ◽  
Hierarchical Porous ◽  
Focus Effect

Functional light scattering materials have received considerable attention in various fields including cosmetics and optics. However, a conventional approach based on optically active inorganic materials requires considerable synthetic effort and complicated dispersion processes for special refractive materials. Here, we report a simple and effective fabrication strategy for highly scattering hierarchical porous polymer microspheres with a high-refractive index inorganic surface that mitigates the disadvantages of inorganic materials, producing organic-inorganic hybrid particles with an excellent soft-focus effect. Hierarchical organic-inorganic hybrid particles were synthesized using the simple physical mixing of porous poly (methyl methacrylate) (PMMA) microparticles with different pore sizes and regularities as the organic core and titanium dioxide (TiO2) nanoparticles with different particle sizes as the inorganic shell. The polar noncovalent interactions between polar PMMA microspheres and the polar surface of TiO2 nanoparticles could induce the hierarchical core-shell structure of hybrid particles. The synthesized hybrid particles had increased diffuse reflectance properties of up to 160% compared with single inorganic particles. In addition, the light scattering efficiency and soft-focus effect could be increased further, depending on the size of the TiO2 nanoparticles and the pore characteristics of the PMMA microspheres. The proposed study can provide a facile and versatile way to improve the light scattering performance for potential cosmetics.

Accelerated Discovery of High-Refractive-Index Polyimides via First-Principles Molecular Modeling, Virtual High-Throughput Screening, and Data Mining

2019 ◽  
Author(s):  
Mohammad Atif Faiz Afzal ◽  
Mojtaba Haghighatlari ◽  
Sai Prasad Ganesh ◽  
Chong Cheng ◽  
Johannes Hachmann
Keyword(s):  
Data Mining ◽  
Refractive Index ◽  
High Throughput ◽  
First Principles ◽  
High Throughput Screening ◽  
Large Scale ◽  
Computational Study ◽  
High Refractive Index ◽  
Structural Features ◽  
Learning Program

<div>We present a high-throughput computational study to identify novel polyimides (PIs) with exceptional refractive index (RI) values for use as optic or optoelectronic materials. Our study utilizes an RI prediction protocol based on a combination of first-principles and data modeling developed in previous work, which we employ on a large-scale PI candidate library generated with the ChemLG code. We deploy the virtual screening software ChemHTPS to automate the assessment of this extensive pool of PI structures in order to determine the performance potential of each candidate. This rapid and efficient approach yields a number of highly promising leads compounds. Using the data mining and machine learning program package ChemML, we analyze the top candidates with respect to prevalent structural features and feature combinations that distinguish them from less promising ones. In particular, we explore the utility of various strategies that introduce highly polarizable moieties into the PI backbone to increase its RI yield. The derived insights provide a foundation for rational and targeted design that goes beyond traditional trial-and-error searches.</div>

Preparation and Characterization of Polyvinylidene Fluoride/ZrO2-TiO2 Optical Film with Wide Band Gap and High Refractive Index

2013 ◽  
Vol 28 (6) ◽  
pp. 671-676 ◽  
Author(s):  
Yu-Qing ZHANG ◽  
Li-Li ZHAO ◽  
Shi-Long XU ◽  
Chao ZHANG ◽  
Xiao-Ying CHEN ◽  
...  
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Polyvinylidene Fluoride ◽  
Wide Band ◽  
High Refractive Index ◽  
Wide Band Gap ◽  
Optical Film

Stress Whitening in Polypropylene. I. Light Scattering Theory and Model Experiments

1995 ◽  
Vol 60 (11) ◽  
pp. 1875-1887 ◽  
Author(s):  
Jaroslav Holoubek ◽  
Miroslav Raab
Keyword(s):  
Refractive Index ◽  
Light Scattering ◽  
Incident Light ◽  
Polymeric Materials ◽  
Wavelength Dependence ◽  
Theoretical Background ◽  
Surrounding Matrix ◽  
Embedded Particles ◽  
The One ◽  
Stress Whitening

Theoretical background for an optical method is presented which makes it possible to distinguish unambiguously between voids and particles as light scattering sites in polymeric materials. Typical dependences of turbidity as a function of diameter of scattering elements, their volume fractions and also turbidity curves as a function of the wavelength of the incident light were calculated, based both on the Lorenz-Mie theory and the fluctuation theory. Such dependences calculated for polypropylene-containing voids on the one hand and particles, differing only slightly from the surrounding matrix in their refractive index, on the other hand, are markedly different. The most significant results are: (i) Turbidity is at least by two orders of magnitude larger for voids in comparison to embedded particles of ethylene-propylene (EPDM) rubber of the same size, concentration and at the same wavelength. (ii) The wavelength dependence of turbidity for EPDM particles and the inherent refractive index fluctuations in the polypropylene matrix is much steeper as compared to voids for all considered diameters (0.1-10 μm). Thus, the nature of stress whitening in complex polymeric materials can be determined from turbidity measurements.

Three-band perfect absorber with high refractive index sensing based on active tunable Dirac semimetal

2021 ◽  
Author(s):  
Zhiyou Li ◽  
Zao Yi ◽  
Tinting Liu ◽  
Li Liu ◽  
Xifang Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Gold Layer ◽  
Perfect Absorber ◽  
Refractive Index Sensing ◽  
Dirac Semimetal

In this paper, we designed a three-band narrowband perfect absorber based on Bulk Dirac semimetallic (BDS) metamaterials. The absorber consists of a hollow Dirac semimetallic layer above, a gold layer...

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