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.

High refractive index organic–inorganic hybrid coatings with TiO2 nanocrystals

2008 ◽  
Vol 328 (1-3) ◽  
pp. 67-72 ◽  
Author(s):  
Yifei Liu ◽  
Changli Lü ◽  
Minjie Li ◽  
Liang Zhang ◽  
Bai Yang
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Hybrid Coatings ◽  
Tio2 Nanocrystals ◽  
Inorganic Hybrid

TiO2 nanoparticles synthesized in an aprotic solvent and applied to prepare high-refractive-index TiO2-polyimide hybrid thin films

2014 ◽  
Vol 71 (1) ◽  
pp. 129-135 ◽  
Author(s):  
Chao-Ching Chang ◽  
Shih-Ya Hong ◽  
Liao-Ping Cheng ◽  
Yang-Yen Yu
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Tio2 Nanoparticles ◽  
Aprotic Solvent ◽  
High Refractive Index ◽  
Hybrid Thin Films

High refractive index organic/inorganic hybrid films prepared by carbazole phenoxy based copolymers and titanium alkoxide

2019 ◽  
Vol 686 (1) ◽  
pp. 45-54
Author(s):  
Min Kyo Jeong ◽  
Won Tae Choi ◽  
Byung-Hyun Ahn ◽  
Yeong-Soon Gal ◽  
Kwon Taek Lim
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Titanium Alkoxide ◽  
Hybrid Films ◽  
Inorganic Hybrid

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

High-refractive-index polymer/inorganic hybrid films containing high TiO2 contents

2011 ◽  
Vol 377 (1-3) ◽  
pp. 138-143 ◽  
Author(s):  
Bo-Tau Liu ◽  
Sheng-Jie Tang ◽  
Yang-Yen Yu ◽  
Sung-Hwa Lin
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Hybrid Films ◽  
Inorganic Hybrid

scholarly journals Broadband and Highly Directional Visible Light Scattering by Laser-Splashed Lossless TiO2 Nanoparticles

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6106
Author(s):  
Yinan Zhang ◽  
Shiren Chen ◽  
Jing Han
Keyword(s):  
Refractive Index ◽  
Tio2 Nanoparticles ◽  
Silicon Germanium ◽  
High Refractive Index ◽  
Photonic Devices ◽  
Forward Scattering ◽  
Visible Range ◽  
Great Promise ◽  
Scattering Ratio ◽  
On Chip

All-dielectric nanoparticles, as the counterpart of metallic nanostructures have recently attracted significant interest in manipulating light-matter interaction at a nanoscale. Directional scattering, as an important property of nanoparticles, has been investigated in traditional high refractive index materials, such as silicon, germanium and gallium arsenide in a narrow band range. Here in this paper, we demonstrate that a broadband forward scattering across the entire visible range can be achieved by the low loss TiO2 nanoparticles with moderate refractive index. This mainly stems from the optical interferences between the broadband electric dipole and the magnetic dipole modes. The forward/backward scattering ratio reaches maximum value at the wavelengths satisfying the first Kerker’s condition. Experimentally, the femtosecond pulsed laser was employed to splash different-sized nanoparticles from a thin TiO2 film deposited on the glass substrate. Single particle scattering measurement in both the forward and backward direction was performed by a homemade confocal microscopic system, demonstrating the broadband forward scattering feature. Our research holds great promise for many applications such as light harvesting, photodetection and on-chip photonic devices and so on.

New Organic-Inorganic Hybrid Materials: High Refractive Index Polymers Based on Cyclotriphophazene with High Thermostability and Transparency

2021 ◽  
Author(s):  
Linxuan Fang ◽  
Caiyun Wang ◽  
Menglu Dai ◽  
Gang Huang ◽  
Jing Sun ◽  
...  
Keyword(s):  
Refractive Index ◽  
Hybrid Materials ◽  
High Refractive Index ◽  
Inorganic Hybrid ◽  
Ene Reaction ◽  
Aromatic Thiol ◽  
High Thermostability

Two flexible and colorless high refractive index films based on cyclotriphophazene have been successfully prepared by the thiol-ene reaction of hexa-substituted cyclotriphophazene monomer (CVP) and commercial bifunctional aromatic thiol. The...

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

Refractive Index Engineering of Polymer Nanocomposites Prepared by End-grafted Polymer Chains onto Inorganic Nanoparticles

2011 ◽  
Vol 1359 ◽  
Author(s):  
Peng Tao ◽  
Anand Viswanath ◽  
Yu Li ◽  
Atri Rungta ◽  
Brian C. Benicewicz ◽  
...  
Keyword(s):  
Refractive Index ◽  
Polymer Nanocomposites ◽  
Polymer Brushes ◽  
Raft Polymerization ◽  
Weight Percent ◽  
High Refractive Index ◽  
Inorganic Nanoparticles ◽  
Polymer Chains ◽  
Hybrid Particles ◽  
Grafted Polymer

ABSTRACTTransparent polymer nanocomposites with high refractive index were prepared by grafting polymer chains onto TiO2 nanoparticles. Reversible addition-fragmentation chain transfer (RAFT) polymerization was used to prepare poly(methyl methacrylate) (PMMA) polymer brushes grafted from TiO2 nanoparticles. The refractive index of the hybrid material increased from 1.49 for neat PMMA to 1.6 by increasing the loading of TiO2 to 40 weight percent. UV-vis spectra showed that grafted particles had a transparency of more than 90% in the visible light range. The hybrid particles can be processed into transparent, high refractive index coatings and self-standing films. The grafted TiO2 nanoparticles can also be easily dispersed into a polymer matrix forming thick, robust transparent polymer nanocomposites.

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