Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Li, Jinhong; Hu, Po; Zeng, Zeyi; Jin, Junchao; Wu, Junhui; Chen, Xi; Liu, Jie; Li, Qingdong; Chen, Mingyong; Zhang, Zuoyu; Zhang, Yuanying; Lin, Xiao; Tan, Xiaodi

doi:10.3390/molecules27196283

Cited by 15 publications

(16 citation statements)

References 130 publications

(142 reference statements)

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“…Figure 3 shows the effect of different PQ contents on the diffraction efficiency of PQ/PMMA materials in strength holography. Under holographic recording light exposure, the PQ molecules in the bright region of the interference region will be consumed by rapid photoreaction to form photoproducts, and with the consumption of PQ molecules, concentration gradients and chemical potential differences will be formed [9]. Due to the limitation of the solubility of PQ in MMA solution, the content of PQ in MMA solution can reach up to 1wt%.…”

Section: Resultsmentioning

confidence: 99%

“…The main preparation methods of PQ/PMMA photopolymer materials include solvent common-method and thermopolymerization method [9], and this paper adopts the method of thermopolymerization, as shown in Figure 1.This method is characterized by the fact that during thermal polymerization, the monomer MMA molecules do not polymerize completely due to the control of the polymerization temperature, and approximately 10% of the monomer MMA remains free in the material [1]. Therefore, the remaining small part of the free monomer MMA molecules in the material will participate in the photochemical reaction during exposure, and the photoinitiator PQ molecules combine with the remaining monomer MMA molecules or substrate PMMA macromolecules under the action of light to form photoproducts, and photopolymerization reaction occurs, causing changes in refractive index modulation [1].…”

Section: Methodsmentioning

confidence: 99%

“…This system uses the same spatial light modulator (SLM) to simultaneously modulate both the signal light and the reference light on the same axis. In detail, the signal light containing the modulation information is in the inner ring, while the reference light is set in the outer ring [9]. During the recording process, When the information beam interferes with the reference beam in the holographic medium, the hologram is recorded in the interference area [1].…”

Section: Methodsmentioning

confidence: 99%

“…During the recording process, When the information beam interferes with the reference beam in the holographic medium, the hologram is recorded in the interference area [1]. During the reading process, the image of the original reference light is loaded onto the SLM, and after the reference light illuminates the material, the signal image can be reproduced [9]. In this paper, we explore the optimal photoinitiator PQ concentration doped in PQ/PMMA materials by comparing the BER of the reproduced signal image.…”

Section: Methodsmentioning

confidence: 99%

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The effect of PQ concentration on holographic data storage in PQ/PMMA material

Zeng

Hao

et al. 2023

Ultra-High-Definition Imaging Systems VI

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Phenanthraquinone-doped polymethyl methacrylate (PQ/PMMA) photopolymers with excellent characteristics of simplicity for manufacture, negligible photo-induced volume shrinkage, low cost, and high resolution for holographic data storage. In this paper, we explored the phenomenon of different PQ concentrations of PQ/PMMA photopolymers on collinear holography system. By designing a set of control experiments with different PQ doping ratios of 0.5%, 0.7%, 0.9%, 1% and 1.1% (1% means the ratio of monomer, thermal-initiator and photo-initiator are Methyl methacrylate:2,2'-Azobis(2-methylpropionitrile):PQ=100:1:1). And the bit error rate (BER) of the reconstructed image using different PQ/PMMA photopolymers were measured, and we found that, at the value of the BER of 0.05, the material of 1% PQ/PMMA can last a longer time than other different PQ concentrations from 0.5% to 0.9% of PQ/PMMA at a recording beam intensity exposure.The 1.1% PQ/PMMA and the 1% PQ/PMMA can achieve the BER of 0.05 at the same time,but the 1.1% PQ/PMMA only last half time of the 1% PQ/PMMA. Furthermore, the diffraction efficiency has an obvious increase with the increase of the PQ concentrations from 0.5% to 1.0% of PQ/PMMA (from 10% to 60%), while it tends to decrease as the PQ concentration continues to increase to 1.1% due to the poor solubility. In summary, from the BER and holographic grating diffraction efficiency result, we got the optimal concentration of PQ in the PQ/PMMA photopolymer is 1%, and the current study is very meaningful for the use of PQ/PMMA in collinear holography data storage.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

The effect of PQ concentration on holographic data storage in PQ/PMMA material

Zeng

Hao

et al. 2023

Ultra-High-Definition Imaging Systems VI

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“…Based on the exposure response coefficient in tensor polarization holography [29] , we report a method to realize a bifocalpolarization holographic lens in a volume hologram. The PQ/PMMA (phenanthrenequinone-doped polymethyl methacrylate) polarization sensitive medium is used, the thickness is 1.5mm [30][31][32][33][34][35] . Two foci are generated by +1 diffracted order.…”

Section: Introductionmentioning

confidence: 99%

Bifocal-polarization holographic lens made from volume hologram

Wang

Qi²,

Hao³

et al. 2023

Ultra-High-Definition Imaging Systems VI

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Polarization holography has gained traction with the development of tensor theory. It primarily focuses on the interaction between polarization waves and photosensitive materials. By introducing the polarization characteristics of light into conventional holography, more degrees of freedom can be provided to control optical information. Based on the polarization modulation of polarization hologram, we propose a method to realize bifocal-polarization holographic lens in volume hologram. Two foci can be generated simultaneously or separately by changing the polarization state of the reading wave. The material used is a PQ/PMMA polarization sensitive medium, the thickness is 1.5mm. The bifocal-polarization holographic lens has 112 mm clear aperture and 446mm focal length.

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Liposomes Under Shear: Structure, Dynamics, and Drug Delivery Applications

Karaz

Şenses

2023

Advanced NanoBiomed Research

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The targeted delivery to specific locations while not causing damage to healthy tissues efficiently remains a challenge in drug delivery systems. Through addressing this issue, stimuli‐responsive materials have been under investigation. As one of the fundamental forces associated with blood flow, shear stress is taken as an advantage to design shear‐sensitive drug carriers. Although blood flow is modeled as laminar flow under normal conditions, in case of constrictions caused by endothelial shear stress, cardiovascular diseases, or angiogenesis due to tumor formation, local shear stress can dramatically increase. To date, shear‐sensitive materials have been investigated under two main categories: shear‐disaggregated and shear‐deformed nanoparticles based on their structural mechanism after exposure to high‐shear stress. Among them, liposomes are promising materials with their soft and deformable structure, high biocompatibility, controlled‐release properties, and sensitivity to shear stress. Herein, in this review, the effects of shear stress on liposomes in terms of their structural changes, flow regimes, rheological properties, and drug delivery applications are discussed. It is believed that this work provides a basis for designing more effective drug delivery systems considering the complexity of the human body.

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Phenanthraquinone-Doped Polymethyl Methacrylate Photopolymer for Holographic Recording

Cited by 15 publications

References 130 publications

The effect of PQ concentration on holographic data storage in PQ/PMMA material

The effect of PQ concentration on holographic data storage in PQ/PMMA material

Bifocal-polarization holographic lens made from volume hologram

Liposomes Under Shear: Structure, Dynamics, and Drug Delivery Applications

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