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Wearable textile strain sensor with integrated carbon nanotubes

Deignan, Jennifer and Foroughi, Javad and Farajikhah, Syamak and Jeirani, Ali and Innis, Peter and Coyle, Shirley and Wallace, Gordon and Diamond, Dermot (2015) Wearable textile strain sensor with integrated carbon nanotubes. In: Nanoweek Conference 2015, 21-22 Oct 2015, University of Limerick.

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Abstract

Wearable strain sensors have applications in physical therapy, training technique, rehabilitation, respiration monitoring and diagnostics [1]. Strain sensors placed on the body have the potential to provide digital measurements of joint angles and bending movements. One such measurement is the Modified Schober’s test (MST). The MST is the standard clinical test for measuring the flexion of the spine and is used as part of the diagnosis of many types of arthritis and diseases affecting the spine including ankylosing spondylitis (AS). The test involves marking 5 cm below and 10 cm above the iliac crest and using a tape measure to determine the increase in distance when a patient bends forward. Typically, an increase of 5 cm or more is considered a healthy spine [2]. This test method relies on the accuracy of the clinician, which leads to a high percentage of human error [3]. Using a strain sensor for this application would reduce inter-observer error and provide more consistent measurements over time. The proposed sensor was manufactured by integrating CNTs onto spandex threads to create a piezoresistive sensor. A testing method was created to determine sensor’s ability to differentiate between incremental increases in strain. Various sensor lengths and core sizes were chosen, and after preliminary testing, a 16.5 cm 8 core sensor was chosen to have the best separation between consecutive percent strains. The results of this work will be implemented in a real-time wearable device which can more accurately diagnose afflictions of the spine. REFERENCES: [1] S. Coyle, Y. Wu, K. T. Lau, D. De Rossi, G. Wallace, D. Diamond, “Smart Nanotextiles: A Review of Materials and Applications”, MRS Bulletin, Vol. 32, issue 5, pp. 434–442, 2007. [2] K.M. Houghton, “Review for the generalist: evaluation of low back pain in children and adolescents”, Pediatr. Rheumatol. Online J., vol. 8, pp 28-36, 2010. [3] E. Aartun, A. Degerfalk, L. Kentsdotter, L. Hestbaek, “Screening of the spine in adolescents: inter- and intra-rater reliability and measurement error of commonly used clinical tests”, BMC Musculoskelet. Disord., vol. 15, no. 1, pp. 37, 2014.

Item Type:Conference or Workshop Item (Poster)
Event Type:Conference
Refereed:No
Subjects:Physical Sciences > Nanotechnology
Medical Sciences > Health
Physical Sciences > Chemistry
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Chemical Sciences
Research Initiatives and Centres > INSIGHT Centre for Data Analytics
Research Initiatives and Centres > National Centre for Sensor Research (NCSR)
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
Funders:Science Foundation Ireland under the Insight initiative, grant SFI/12/RC/2289, IRSES-GA-2010-269302
ID Code:20883
Deposited On:29 Oct 2015 12:11 by Ms Jennifer Deignan. Last Modified 25 Nov 2016 15:30

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