SiO2 NPs-PQ/PMMA Photopolymer Material Doped with a High-Concentration Photosensitizer for Holographic Storage

Liu, Ying; Fan, Fei; Tan, Xiaodi

doi:10.3390/polym12040816

Cited by 20 publications

(17 citation statements)

References 24 publications

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“…It was a good reference value for the development of the PQ/PMMA photopolymer system. Subsequently, Y. Liu et al also proved that doping nanoparticles can improve the photoinduced birefringence of the materials by doping aluminum and silica nanoparticles [48,49]. The method of doping nano-components also has a good reference value for improving the recording performance of PQ/PMMA.…”

Section: Photopolymer Materialsmentioning

confidence: 99%

A Review of Polarization-Sensitive Materials for Polarization Holography

Zhai

Liu

et al. 2020

Materials

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Polarization holography has the unique capacity to record and retrieve the amplitude, phase, and polarization of light simultaneously in a polarization-sensitive recording material and has attracted widespread attention. Polarization holography is a noteworthy technology with potential applications in the fields of high-capacity data storage, polarization-controlled optical elements, and other related fields. The choice of its high-performance materials is particularly important. To further develop polarization holography applications and improve the quality of the information recorded (i.e., material sensitivity and resolution), a deeper understanding of such materials is needed. We present an overview of the polarization-sensitive materials, which introduced polarization holographic technology and the development of polarization holographic materials. The three main types of polarization holographic materials are described, including azopolymer materials, photopolymer material, and photorefractive polymer material. We examine the key contributions of each work and present many of the suggestions that have been made to improve the different polarization-sensitive photopolymer materials.

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Section: Photopolymer Materialsmentioning

confidence: 99%

A Review of Polarization-Sensitive Materials for Polarization Holography

Zhai

Liu

et al. 2020

Materials

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“…39 To enhance the saturation solubility of PQ and the holographic properties of composite materials, various approaches have been proposed, such as introducing comonomer or nanoscale components into MMA monomers. Introducing a suitable comonomer to increase the saturation concentration of the photosensitizer PQ 40 or introducing nanoparticles 41,42 (such as Al and SiO 2 ) has been a common strategy to enhance the polarization recording diffraction efficiency and refractive index modulation of PQ/PMMA photopolymer materials. Recently, carbon nanoparticles, such as single-walled carbon nanotubes, 43 gradually received attention and were introduced to initiate the polymerization of monomers.…”

Section: ■ Introductionmentioning

confidence: 99%

Significant Enhancement of the Polarization Holographic Performance of Photopolymeric Materials by Introducing Graphene Oxide

Chen

Huang

et al. 2021

ACS Appl. Mater. Interfaces

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Relying on various defects and functional oxygen-containing groups on the basal planes, graphene oxide (GO) is commonly unitized for intimate mixing with a polymer matrix to fabricate high-performance nanocomposite polymeric materials with the characteristics of graphene. Herein, by introducing GO nanosheets in a phenanthraquinone-doped polymethyl methacrylate (PQ/PMMA) photopolymer, we demonstrate that the polarization holographic diffraction efficiency of nanocomposite materials can be dramatically enhanced up to nearly 10 times and the photosensitivity can also be enhanced by more than 3 times. Experimental observations reveal that the incorporation of GO nanosheets serves as a polymerization initiator not only to promote the polymerization of MMA monomers and induce the drafting behavior of the PMMA polymer on its surface but also to effectively modulate the molecular weight of the PQ/PMMA photopolymer by adjusting the doping concentration of GO nanosheets. The current study, for the first time, demonstrates that the modulation of molecular weight for PQ/PMMA photopolymers here exerts a significant impact on their holography performance. In addition, due to the strong physisorption of PQ photosensitizers onto GO nanosheets, the aggregation of PQ around GO-graft-PMMA also facilitates the formation of GO-graft-PMMA/PQ and is beneficial to the enhancement of holographic performance. The emergence of GO-graft-PMMA/PQ nanocomposite materials here is expected to fulfill the requirement of high-performance polarization-sensitive materials in the field of polarization holographic data storage and provide a facile but effective nanocomposite doping strategy to modulate the holographic performance of photopolymers from micro- and mesoscopic levels.

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“…Here, we fabricated TI/PMMA polymers using a three-step polymerization method [ 14 ], which included pre-polymerization, high-temperature treatment and low-temperature polymerization. The chemical structures of the main solutes and solvents used in the fabrication of TI/PMMA polymers are depicted in Figure 1 [ 23 , 24 , 25 ]. The solvent MMA was used as the monomer in the TI/PMMA matrix, which contributed to the polymerization process through photo-initiation and thermo-initiation.…”

Section: Methodsmentioning

confidence: 99%

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

Liu

Sun

2021

Polymers

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The dark diffusion enhancement process (DDEP) caused by photopolymerization during the pre-exposure of TI/PMMA (titanocene dispersed methyl methacrylate matrix) polymers was theoretically analyzed and experimentally investigated, revealing the holographic grating enhancement of TI/PMMA polymers in the post-exposure process without additional operations. The diffusion of photo-initiators and photoproducts dominated the grating enhancement process after exposure. We adopted two pre-exposure methods, long-time (second level) and short-time (millisecond level) laser exposure, at 532 nm, to investigate the DDEP during the post-exposure process. A five-fold enhancement in grating strength was achieved in consecutive long-time pre-exposures, while a two-fold grating development was examined after short-time exposure. Additionally, the exposure durations and repetition rates influenced the grating increment of the DDEP. This study provided a basis for the feasibility of holographic application in TI/PMMA photopolymers via the dark diffusion effect.

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SiO2 NPs-PQ/PMMA Photopolymer Material Doped with a High-Concentration Photosensitizer for Holographic Storage

Cited by 20 publications

References 24 publications

A Review of Polarization-Sensitive Materials for Polarization Holography

A Review of Polarization-Sensitive Materials for Polarization Holography

Significant Enhancement of the Polarization Holographic Performance of Photopolymeric Materials by Introducing Graphene Oxide

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

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