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The Effects of Silicone Enclosure Colour on the Function of Optical Sensors Frank, Garrett; Askari, Shahbaz; Raschdorf, Katharina; Khosravi, Sadra; Kwon, Brian K.; Shadgan, Babak

Abstract

The colour of the silicone enclosure of an implantable reflectance-based optical probe plays a critical role in sensor performance. Red-coloured probes that are highly reflective to near-infrared light have been found to increase photodetector power by a factor of 6 for wavelengths between 660 and 950 nm and triple the magnitude of measured cardiac pulsations compared to traditional black probes. The increase in photodetector power and cardiac pulsation magnitude is presumably due to increased spatial range resulting from a higher magnitude of superficial tissue scattering. Conversely, probes with highly absorbent colours such as black and blue result in more stable signals and are expected to have higher spatial resolution and depth of penetration.

Item Metadata

Title
The Effects of Silicone Enclosure Colour on the Function of Optical Sensors
Creator
Frank, Garrett; Askari, Shahbaz; Raschdorf, Katharina; Khosravi, Sadra; Kwon, Brian K.; Shadgan, Babak
Contributor
International Collaboration on Repair Discoveries
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2022-06-19
Description
The colour of the silicone enclosure of an implantable reflectance-based optical probe plays a critical role in sensor performance. Red-coloured probes that are highly reflective to near-infrared light have been found to increase photodetector power by a factor of 6 for wavelengths between 660 and 950 nm and triple the magnitude of measured cardiac pulsations compared to traditional black probes. The increase in photodetector power and cardiac pulsation magnitude is presumably due to increased spatial range resulting from a higher magnitude of superficial tissue scattering. Conversely, probes with highly absorbent colours such as black and blue result in more stable signals and are expected to have higher spatial resolution and depth of penetration.
Subject
implantable; biosensor; phantom; diagnostics; direct measurement; absorption; reflection; scattering
Genre
Article
Type
Text
Language
eng
Date Available
2022-09-06
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0418609
URI
http://hdl.handle.net/2429/82673
Affiliation
Applied Science, Faculty of; Non UBC; Biomedical Engineering, School of; Electrical and Computer Engineering, Department of; Orthopaedic Surgery, Department of
Citation
Biology 11 (6): 932 (2022)
Publisher DOI
10.3390/biology11060932
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Rights URI
https://creativecommons.org/licenses/by/4.0/
Aggregated Source Repository
DSpace

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CC BY 4.0