Development and testing of low spatial frequency holographic concentrator elements for collection of solar energy

Akbari, Hoda; Naydenova, Izabela; Ahmed, Hind; McCormack, Sarah; Martin, Suzanne

doi:10.1016/j.solener.2017.04.067

Cited by 29 publications

(38 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HOEs produced as volume holograms in photopolymer have the potential to be thin, efficient, lightweight and flexible, which makes them an attractive solution. Examples of applications which could benefit from HOEs include solar arrays [5,6] and astronomical measurement [7].…”

Section: Introductionmentioning

confidence: 99%

Holographic beam-shaping diffractive diffusers fabricated by using controlled laser speckle

Murphy¹,

Toal²,

Naydenova³

et al. 2018

Opt. Express

Self Cite

View full text Add to dashboard Cite

A method for fabricating diffractive holographic optical diffusers is reported, allowing a high degree of control of the resulting diffuser characteristics. The method consists of recording a laser speckle pattern using a single carrier beam, with controlled speckle size and shape, in an acrylamide-based volume photopolymer. The multiple interferences that create the speckle pattern form the hologram. Results are presented verifying the diffusers are volume holographic in nature and the speckle pattern is recorded accurately in the photopolymer. Diffusers recorded by this method are analysed to characterise the optical performance of the diffusers and to illustrate their beam-shaping capabilities, particularly in producing asymmetric beam outputs.

show abstract

Section: Introductionmentioning

confidence: 99%

Holographic beam-shaping diffractive diffusers fabricated by using controlled laser speckle

Murphy¹,

Toal²,

Naydenova³

et al. 2018

Opt. Express

Self Cite

View full text Add to dashboard Cite

show abstract

“…The main requirement for holographic solar concentrators is a combination of high diffraction efficiency with a wide range of angles of radiation incidence. In the literature are considered the processes of fabrication and properties of diffraction deflectors based on volume [22][23][24][25] or relief structures [26] and also focusing elements [27][28][29][30] as components of solar concentrators. In this section, we consider the properties of structures in Bayfol HX materials and acrylate compositions as applied to the problem of obtaining diffraction deflectors of holographic solar concentrators.…”

Section: Elements Based On Periodic Structures For Energy Applicationmentioning

confidence: 99%

Application of Photopolymer Materials in Holographic Technologies

Vorzobova

Sokolov

2019

Polymers

View full text Add to dashboard Cite

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.

show abstract

“…Photovoltaic systems are quite simple, accessible and have zero environmental impacts (ZUBI et al, 2017). These systems are able to improve the efficiency of concentrated solar energy, usually through refractivity image optic using lens or nonmagnetic optic through parabolic composite or luminescent solar concentration (AKBARI et al, 2017).…”

Section: Solar Energymentioning

confidence: 99%

Sustainable energy public policies planning: encouraging the production and use of renewable energies

Filho

Alcócer

Pinto

et al. 2018

REGET

View full text Add to dashboard Cite

This work analyses the model of energy production and the use of renewable energy in Brazil with a sustainable development point of view. In this regard, it is pointed out the production of renewable energy as an alternative solution to reduce expenses costs through initial investment in the implementation of an own energy generation model towards sustainability. The diversification of the energy matrix with clean and renewable sources in substitution of the energy model based on fossil energy sources, besides being environmentally correct, has a relevant national importance. In the methodological scope it is rational to leave this writing as a theoretical study, a qualitative approach and a technical bibliographic procedure. Some results, a priori, indicate that the use of alternative sources minimizes the consumption of conventional energy sources, which generates large degradation to the environment. Many of these alternative sources are plentiful in the country. Finally, we present some public policies that the Federal Government is implementing in Higher Education Federal Institutions (IFES) for the incentive and use of renewable energies.

show abstract

Development and testing of low spatial frequency holographic concentrator elements for collection of solar energy

Cited by 29 publications

References 43 publications

Holographic beam-shaping diffractive diffusers fabricated by using controlled laser speckle

Holographic beam-shaping diffractive diffusers fabricated by using controlled laser speckle

Application of Photopolymer Materials in Holographic Technologies

Sustainable energy public policies planning: encouraging the production and use of renewable energies

Contact Info

Product

Resources

About