Towards a wearable skin tone responsive optical sensor

dc.contributor.authorNdiweni, Nomakhosi N.
dc.contributor.authorJoubert, Trudi-Heleen
dc.contributor.emailnomakhosi.ndiweni@tuks.co.za
dc.date.accessioned2026-06-08T11:16:20Z
dc.date.available2026-06-08T11:16:20Z
dc.date.issued2025-09-22
dc.descriptionDATA AVAILABILITY STATEMENT : Data are contained within the article.
dc.description.abstractMelanin is one of the key light absorbers in skin and is responsible for the colour of the skin. This study evaluates the responsivity of different skin tones to white light within the visible spectral range of 300–700 nm on 12 participants. The results show that the peak amplitude of the reflected light signal decreased by 90% for darker skin tones, compared to 70% for lighter skin tones. There were also visible differences at the 460 nm and 570 nm wavelengths between the skin tones, suggesting that the standard one-glove-fits-all pulse oximeter might not be ideal.
dc.description.departmentElectrical, Electronic and Computer Engineering
dc.description.librarianam2026
dc.description.sdgSDG-09: Industry, innovation and infrastructure
dc.description.sponsorshipFunded by the South African Department of Science and Innovation Nano and Micro Manufacturing Facility grant.
dc.description.urihttps://www.mdpi.com/journal/engproc
dc.identifier.citationNdiweni, N.N. & Joubert, T.-H. Towards aWearable Skin Tone Responsive Optical Sensor. Engineering Proceedings 2025, 109, 17: 1-5. https://doi.org/10.3390/engproc2025109017.
dc.identifier.issn2673-4591 (online)
dc.identifier.other10.3390/engproc2025109017
dc.identifier.urihttp://hdl.handle.net/2263/110482
dc.language.isoen
dc.publisherMDPI
dc.rights© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
dc.subjectMonk scale
dc.subjectOptical sensors
dc.subjectSkin tones
dc.subjectWearble sensors
dc.titleTowards a wearable skin tone responsive optical sensor
dc.typeArticle

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