Development of Periodic and Three-Dimensional Structures in Acrylic-Monomer Photopolymer Materials by Holographic Methods

Vorzobova, N. D.; Bulgakova, V G; Moskalenko, A. I.; Pavlovets, I. M.; Denisyuk, I. Yu.; Burunkova, Yu. É.

doi:10.1007/s11141-015-9544-y

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…The dependence of diffraction efficiency on the recording frequency in accordance with existing concepts is determined by the processes of nonlocal polymerization [19]. As was shown in our paper [18], these processes can lead to the formation of bridges between the polymerization regions at the initial stage of structure formation and to an increase in light scattering. However, note here that this result can be considered as positive and used to obtain unidirectional diffusers with an elongated (along the dielectric planes of the grating) scattering indicatrix.…”

Section: Acrylate Compositionssupporting

confidence: 80%

“…The refractive index modulation in the holographic grating is determined by the known mechanism of diffusion mass transfer due to differences in the polymerization rates of the composition components [5,6]. This mechanism determines the non-monotonous character of the dependence of diffraction efficiency on the exposure duration in the studied materials [18].…”

Section: Acrylate Compositionsmentioning

confidence: 99%

“…However, such materials, as were shown in our previous work, can be used to obtain holograms of a focused image that do not require high resolution. We have fabricated elements based on holograms of a focused image, as well as elements based on volume transmission gratings, with reconstruction of images in white light [18]. The film-based elements were recorded in acrylate nanocomposite with silicon oxide.…”

Section: Protection Technologiesmentioning

confidence: 99%

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Application of Photopolymer Materials in Holographic Technologies

Vorzobova

Sokolov

2019

Polymers

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The possibility of the application of acrylate compositions and Bayfol HX photopolymers in holographic technologies is considered. The holographic characteristics of materials, their advantages, and limitations in relation to the tasks of obtaining holographic elements based on periodic structures are given. The conditions for obtaining controlled two and multichannel diffraction beam splitters are determined with advantages in terms of the simplicity of the fabrication process. The diffraction and selective properties of volume and hybrid periodic structures by radiation incidence in a wide range of angles in three-dimensional space are investigated, and new properties are identified that are of interest for the development of elements of holographic solar concentrators with advantages in the material used and the range of incidence angles. A new application of polymer materials in a new method of holographic 3D printing for polymer objects with arbitrary shape fabrication based on the projection of a holographic image of the object into the volume of photopolymerizable material is proposed, the advantage of which, relative to additive 3D printing technologies, is the elimination of the sequential synthesis of a three-dimensional object. The factors determining the requirements for the material, fabrication conditions, and properties of three-dimensional objects are identified and investigated.

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Section: Acrylate Compositionssupporting

confidence: 80%

Section: Acrylate Compositionsmentioning

confidence: 99%

Section: Protection Technologiesmentioning

confidence: 99%

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Application of Photopolymer Materials in Holographic Technologies

Vorzobova

Sokolov

2019

Polymers

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“…As a rule, the strength of the holographic effect of a marker depends on the period of the diffraction grating d, which characterizes the groove density G, as well as on the isotropy of the grating microrelief [9]. To evaluate the strength of the holographic effect of a marker, the value of diffraction efficiency E is usually used [10].…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology Formation of Edible Holographic Marker on Potato Starch with Gelatin or Agar Thin Coatings

et al. 2020

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Edible films and coatings based on biopolymers to protect and extend the shelf life of food and medicine can be functionalized, by applying a holographic marker on the coating surface for marking products or sensing storage conditions. In this work, holographic markers were prepared on the surface of thin biopolymer coatings based on starch, gelatin, agar and also starch/gelatin and starch/agar blends by the nanoimprint method from a film-forming solution. The morphology of the surface of holographic markers using optical microscopy in reflection mode was examined, as well as the reasons for its formation using an analysis of the flow curves of film-forming solutions. It was found that the surface morphology of the marker strongly depends on the composition, consistency index of film-forming solution and miscibility of the components. It was shown that the starch/agar film-forming solution at the ratio of 70/30 wt.% has a low consistency index value of 21.38 Pa·s0.88, compared to 64.56 Pa·s0.67 for pure starch at a drying temperature of 30 °C, and the components are well compatible. Thus, an isotropic morphology of the holographic marker surface was formed and the value of diffraction efficiency of 3% was achieved, compared to 1.5% for the marker made of pure starch. Coatings without holographic markers were analyzed by tensile strength and water contact angle, and their properties are highly dependent on their composition.

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“…concentrators [4], for protective technologies [3,5] or for multi-functional optical systems as tailor-made diffractive devices, for example, for enhanced multilevel security or integrated optics [6], as well as for biomaterials such as for novel intraocular lenses (IOLs) [7]. Double periodic structures can coexist independently of one another but may also be correlated.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous formation of holographic surface relief gratings and volume phase gratings in photosensitive polymer

Sabel

Lucas

Lensen

2019

Materials Research Letters

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We report on secondary surface relief grating formation associated with holographic recording of volume phase gratings in epoxy-based, free-surface, volume holographic recording material, as well as in pure Epon SU-8 photoresist. Light-induced gratings are formed simultaneously by phototriggered mass migration in the cause of component diffusion. Height profiles of surface relief gratings are compared with refractive index modulation profiles of corresponding volume phase gratings. Parasitic volume gratings and non-sinusoidal profiles are also investigated. Based on the correlation of volume and surface gratings, analysis of the height profiles allows conclusions to be drawn on the mechanisms of volume holographic grating formation. IMPACT STATEMENT This paper reports on correlated volume and surface gratings, offering novel analytical possibilities to contribute to a deeper understanding of the holographic grating formation process.

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Development of Periodic and Three-Dimensional Structures in Acrylic-Monomer Photopolymer Materials by Holographic Methods

Cited by 4 publications

References 6 publications

Application of Photopolymer Materials in Holographic Technologies

Application of Photopolymer Materials in Holographic Technologies

Surface Morphology Formation of Edible Holographic Marker on Potato Starch with Gelatin or Agar Thin Coatings

Simultaneous formation of holographic surface relief gratings and volume phase gratings in photosensitive polymer

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