A highly sensitive, low-cost, wearable pressure sensor based on conductive hydrogel spheres

Handle URI:
http://hdl.handle.net/10754/594304
Title:
A highly sensitive, low-cost, wearable pressure sensor based on conductive hydrogel spheres
Authors:
Tai, Yanlong ( 0000-0002-9657-6842 ) ; Mulle, Matthieu; Ventura, Isaac Aguilar; Lubineau, Gilles ( 0000-0002-7370-6093 )
Abstract:
Wearable pressure sensing solutions have promising future for practical applications in health monitoring and human/machine interfaces. Here, a highly sensitive, low-cost, wearable pressure sensor based on conductive single-walled carbon nanotube (SWCNT)/alginate hydrogel spheres is reported. Conductive and piezoresistive spheres are embedded between conductive electrodes (indium tin oxide-coated polyethylene terephthalate films) and subjected to environmental pressure. The detection mechanism is based on the piezoresistivity of the SWCNT/alginate conductive spheres and on the sphere-electrode contact. Step-by-step, we optimized the design parameters to maximize the sensitivity of the sensor. The optimized hydrogel sensor exhibited a satisfactory sensitivity (0.176 ΔR/R0/kPa-1) and a low detectable limit (10 Pa). Moreover, a brief response time (a few milliseconds) and successful repeatability were also demonstrated. Finally, the efficiency of this strategy was verified through a series of practical tests such as monitoring human wrist pulse, detecting throat muscle motion or identifying the location and the distribution of an external pressure using an array sensor (4 × 4). © 2015 The Royal Society of Chemistry.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Tai Y, Mulle M, Aguilar Ventura I, Lubineau G (2015) A highly sensitive, low-cost, wearable pressure sensor based on conductive hydrogel spheres. Nanoscale 7: 14766–14773. Available: http://dx.doi.org/10.1039/c5nr03155a.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
2015
DOI:
10.1039/c5nr03155a
PubMed ID:
26288336
Type:
Article
ISSN:
2040-3364; 2040-3372
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorTai, Yanlongen
dc.contributor.authorMulle, Matthieuen
dc.contributor.authorVentura, Isaac Aguilaren
dc.contributor.authorLubineau, Gillesen
dc.date.accessioned2016-01-19T14:45:37Zen
dc.date.available2016-01-19T14:45:37Zen
dc.date.issued2015en
dc.identifier.citationTai Y, Mulle M, Aguilar Ventura I, Lubineau G (2015) A highly sensitive, low-cost, wearable pressure sensor based on conductive hydrogel spheres. Nanoscale 7: 14766–14773. Available: http://dx.doi.org/10.1039/c5nr03155a.en
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.pmid26288336en
dc.identifier.doi10.1039/c5nr03155aen
dc.identifier.urihttp://hdl.handle.net/10754/594304en
dc.description.abstractWearable pressure sensing solutions have promising future for practical applications in health monitoring and human/machine interfaces. Here, a highly sensitive, low-cost, wearable pressure sensor based on conductive single-walled carbon nanotube (SWCNT)/alginate hydrogel spheres is reported. Conductive and piezoresistive spheres are embedded between conductive electrodes (indium tin oxide-coated polyethylene terephthalate films) and subjected to environmental pressure. The detection mechanism is based on the piezoresistivity of the SWCNT/alginate conductive spheres and on the sphere-electrode contact. Step-by-step, we optimized the design parameters to maximize the sensitivity of the sensor. The optimized hydrogel sensor exhibited a satisfactory sensitivity (0.176 ΔR/R0/kPa-1) and a low detectable limit (10 Pa). Moreover, a brief response time (a few milliseconds) and successful repeatability were also demonstrated. Finally, the efficiency of this strategy was verified through a series of practical tests such as monitoring human wrist pulse, detecting throat muscle motion or identifying the location and the distribution of an external pressure using an array sensor (4 × 4). © 2015 The Royal Society of Chemistry.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleA highly sensitive, low-cost, wearable pressure sensor based on conductive hydrogel spheresen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNanoscaleen
kaust.authorTai, Yanlongen
kaust.authorMulle, Matthieuen
kaust.authorVentura, Isaac Aguilaren
kaust.authorLubineau, Gillesen

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