Nanoparticle-induced refractive index modulation of organic-inorganic hybrid photopolymer

Kim, Won Sun; Jeong, Yong‐Cheol; Park, Jung-Ki

doi:10.1364/oe.14.008967

Cited by 29 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Doping nanoparticles with high refractive index into PDLC materials may be an easy and effective way to realize the higher index contrast. Some researchers have successfully demonstrated nanoparticle patterning, that is, holographic gratings, in nanoparticledispersed photopolymers using holography technique [95][96][97][98][99]. In the nanoparticle-doped PDLC materials, the nanoparticles are anticipated to diffuse into the LC-rich regions during the phase separation between the polymer and LC.…”

Section: Effect Of Nanoparticle Dopingmentioning

confidence: 99%

Holographic Polymer‐Dispersed Liquid Crystals: Materials, Formation, and Applications

Liu

Sun

2008

Advances in OptoElectronics

108

View full text Add to dashboard Cite

By combining polymer-dispersed liquid crystal (PDLC) and holography, holographic PDLC (H-PDLC) has emerged as a new composite material for switchable or tunable optical devices. Generally, H-PDLC structures are created in a liquid crystal cell filled with polymer-dispersed liquid crystal materials by recording the interference pattern generated by two or more coherent laser beams which is a fast and single-step fabrication. With a relatively ideal phase separation between liquid crystals and polymers, periodic refractive index profile is formed in the cell and thus light can be diffracted. Under a suitable electric field, the light diffraction behavior disappears due to the index matching between liquid crystals and polymers. H-PDLCs show a fast switching time due to the small size of the liquid crystal droplets. So far, H-PDLCs have been applied in many promising applications in photonics, such as flat panel displays, switchable gratings, switchable lasers, switchable microlenses, and switchable photonic crystals. In this paper, we review the current state-of-the-art of H-PDLCs including the materials used to date, the grating formation dynamics and simulations, the optimization of electro-optical properties, the photonic applications, and the issues existed in H-PDLCs.

show abstract

Section: Effect Of Nanoparticle Dopingmentioning

confidence: 99%

Holographic Polymer‐Dispersed Liquid Crystals: Materials, Formation, and Applications

Liu

Sun

2008

Advances in OptoElectronics

108

View full text Add to dashboard Cite

show abstract

“…Photopolymerizable nanoparticle-polymer composites (NPCs) are a holographic dry composition in which inorganic nanoparticles, such as TiO 2 , SiO 2 , ZrO 2, nanozeolites [1,2,3,4,5], and organic nanoparticles [6], are uniformly dispersed in organic host monomers that are capable of chain-growth polymerization. During the polymerization process, a light-induced redistribution of the monomer and nanoparticles takes place in the bright and dark regions of the light pattern, respectively.…”

Section: Introductionmentioning

confidence: 99%

Diffractive and Interferometric Characterization of Nanostructured Photopolymer for Sharp Diffractive Optical Elements Recording

et al. 2018

View full text Add to dashboard Cite

We study the behavior of a nanoparticle-polymer composite (NPC) material, based on a thiol-ene monomer system, working with long grating spacing. Thus, we evaluate the suitability of the NPC for storing complex diffractive optical elements with sharp profiles, such as blazed gratings. Using holographic methods, we measure the “apparent” diffusion of the material and the influence of the spatial period on this diffusion. The applicability of this material in complex diffractive optical elements (DOEs) recording is analyzed using an interferometric method. Supported by the results of this analysis, we record blazed gratings with different grating spacing and measure the maximum diffraction efficiency (DE) achieved. The results show that NPC has a good behavior in this range of spatial frequencies.

show abstract

“…In order to avoid the shrinkage problem, several fabrication methods have been proposed and investigated, including the doped system [8][9][10][11], sol-gel system [12][13][14], cationic ring opening polymerization system [15][16][17][18][19], organicinorganic hybrid system [20][21][22][23][24][25] and crosslinked matrix system [26][27][28]. In our laboratory, we have developed a thermo-polymerization technique to fabricate dye doped poly(methyl methacrylate) (PMMA) photopolymer system.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Irgacure 784 doped photopolymers for holographic data storage at 532 nm

Lin¹,

Hsiao²,

Hsu³

2009

J. Opt. A: Pure Appl. Opt.

View full text Add to dashboard Cite

This paper presents the development of a thick photopolymer for holographic data storage at a wavelength of 532 nm. Irgacure 784, one kind of the titanocene photoinitiators, has been selected and doped to synthesize the photopolymers in this research. Using a two-step thermo-polymerization procedure two photopolymer samples have been fabricated, Irgacure 784 doped poly(methyl methacrylate) (PMMA) and Irgacure 784 doped epoxy resin. Samples of 2 mm thick have been fabricated. Holographic measurements show that Irgacure 784 doped epoxy resin is very sensitive at 532 nm and that it is capable of supporting holographic data storage at a ultra-fast recording rate of 760 Mb s −1. Mass spectrum measurement, solid state 1 H-NMR spectrum measurement, and thermogravity analyses (TGA) have been performed. The results reveal the physical mechanism of holographic recording in these samples, providing a guideline for a design strategy and fabrication technique to produce a low-shrinkage recording material for holographic data storage in the tera-byte information age.

show abstract

Nanoparticle-induced refractive index modulation of organic-inorganic hybrid photopolymer

Cited by 29 publications

References 12 publications

Holographic Polymer‐Dispersed Liquid Crystals: Materials, Formation, and Applications

Holographic Polymer‐Dispersed Liquid Crystals: Materials, Formation, and Applications

Diffractive and Interferometric Characterization of Nanostructured Photopolymer for Sharp Diffractive Optical Elements Recording

Preparation and characterization of Irgacure 784 doped photopolymers for holographic data storage at 532 nm

Contact Info

Product

Resources

About