Finlayson, Christopher

Tomes, John

English

We report upon the exploitation of the latest 3D printing technologies to provide low-cost instrumentation solutions, for use in an undergraduate level final-year project. The project addresses prescient research issues in optoelectronics, which would otherwise be inaccessible to such undergraduate student projects. The experimental use of an integrating sphere in conjunction with a desktop spectrometer presents opportunities to use easily handled, low cost materials as a means to illustrate many areas of physics such as spectroscopy, lasers, optics, simple circuits, black body radiation and data gathering. Presented here is a 3rd year undergraduate physics project which developed a low cost (£25) method to manufacture an experimentally accurate integrating sphere by 3D printing. Details are given of both a homemade internal reflectance coating formulated from readily available materials, and a robust instrument calibration method using a tungsten bulb. The instrument is demonstrated to give accurate and reproducible experimental measurements of luminescence quantum yield of various semiconducting fluorophores, in excellent agreement with literature values

Aberystwyth Research Portal

Low cost 3D-printing used in an undergraduate project:an integrating sphere for measurement of photoluminescence quantum yield

https://pure.aber.ac.uk/portal/files/9565512/Tomes_EJP_preprint.pdf

Low cost 3D-printing used in an undergraduate project:an integrating sphere for measurement of photoluminescence quantum yield

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