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FACULTY OF PHYSICS

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2024-11-22 2:22

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Conference: Bucharest University Faculty of Physics 2024 Meeting

Section: Polymer Physics

Title:

3D Printed Integrating Sphere Coated with Highly Reflective Surface Coating Using BaSO4

Authors:

Stefan CARAMIZOIU(1,*), Stefan-Marian IORDACHE(1,*), Ana-Maria IORDACHE(1), Ana-Maria RADUTA(1,2), Valentin BARNA(2), Ileana Cristina VASILIU(1), Irinela CHILIBON(1), Cristiana Eugenia Ana GRIGORESCU(1)

^*
Affiliation:

1) Optospintronics Department, National Institute of R&D for Optoelectronics-INOE 2000, 409 Atomistilor, 077125, Magurele, Ilfov, Romania

2) Faculty of Physics, University of Bucharest, 405 Atomistilor, 077125, Magurele, Ilfov, Romania

E-mail

*) Corresponding author: stefan.caramizoiu@inoe.ro (S.C.); stefan.iordache@inoe.ro (S.-M.I.)

Keywords:

integrating sphere, barium sulfate, high reflective surface, 3D printing.

Abstract:

The integrating spheres, known also as Ulbricht spheres, are essential tools, and they are widely used in fields like optics, spectroscopy and photometry, where they serve to evaluate and characterize the properties of light in detail. Constructed of high-cost specialized materials, the accessibility of these devices is restricted to a broad spectrum of researchers. To overcome these restrictions, an innovative methodology is suggested, consisting of the development of an integration sphere fabricated by 3D printing technology, using white polylactic acid (PLA) and finished with a layer of highly reflective and diffusive material such as BaSO4. This approach brings multiple benefits: cost efficiency is significantly improved by eliminating the need for expensive equipment and machinery, the rapid prototyping process is facilitated by allowing prompt adjustments of the sphere design according to specific experimental requirements, and it is possible to make in a few hours using a standard 3D printer. Furthermore, the scalability of this model allows easy adaptation of the sphere dimensions to conform to different sample sizes and measurement needs. Thus, the 3D-printed and BaSO4-coated integration sphere stands out as an advantageous alternative to traditional models, offering superior solutions in terms of cost, accessibility, customization and efficiency in the application of optical measurements.

Acknowledgement:

This work was carried out through the Core Program with the National Research Development and Innovation Plan 2022-2027, carried out with the support of MCID, project no. PN 23 05 and by the Ministry of Research and Innovation through Program I—Development of the National R&D System, Subprogram 1.2—Institutional Performance—Projects for Excellence Financing in RDI, contract no. 18PFE/30.12.2021.