A magnetic nanocomposite for biomimetic flow sensing

Handle URI:
http://hdl.handle.net/10754/563246
Title:
A magnetic nanocomposite for biomimetic flow sensing
Authors:
Alfadhel, Ahmed ( 0000-0003-3244-0644 ) ; Li, Bodong ( 0000-0002-4024-4400 ) ; Zaher, Amir Omar; Yassine, Omar ( 0000-0002-0117-8017 ) ; Kosel, Jürgen ( 0000-0002-8998-8275 )
Abstract:
A magnetic nanocomposite has been implemented as artificial hair on a giant magnetoimpedance (GMI) thin-film sensor for flow sensing. The 500 μm long and 100 μm in diameter pillars are composed of iron nanowires incorporated in polydimethylsiloxane (PDMS). The nanowires' length and diameter are 6 μm and 35 nm, respectively. Upon fluid flow, the pillars are deflected, causing a change in the magnetic field at the GMI element and a corresponding change in impedance. The permanent magnetic behavior of the nanowires in combination with the GMI sensor and the high elasticity of the PDMS pillars result in a high-performance flow sensor with low power consumption and potential for remote detection. No additional magnetic field is required to magnetize the nanowires or bias the sensor, which simplifies miniaturization and integration in microsystems. At a power consumption of 31.6 μW, air flow rates up to 190 mm s-1 can be detected with a sensitivity of 24 mΩ (mm)-1 s and a resolution of 0.56 mm s-1 while the range for water flow is up to 7.8 mm s-1 with a sensitivity of 0.9 Ω (mm)-1 s and a resolution of 15 μm s-1. When power consumption is reduced to as low as 80 nW a high resolution of 32 μm s-1 is still maintained.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Physical Sciences and Engineering (PSE) Division; Sensing, Magnetism and Microsystems Lab
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Lab Chip
Issue Date:
2014
DOI:
10.1039/c4lc00821a
Type:
Article
ISSN:
14730197
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Electrical Engineering Program; Sensing, Magnetism and Microsystems Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAlfadhel, Ahmeden
dc.contributor.authorLi, Bodongen
dc.contributor.authorZaher, Amir Omaren
dc.contributor.authorYassine, Omaren
dc.contributor.authorKosel, Jürgenen
dc.date.accessioned2015-08-03T11:44:01Zen
dc.date.available2015-08-03T11:44:01Zen
dc.date.issued2014en
dc.identifier.issn14730197en
dc.identifier.doi10.1039/c4lc00821aen
dc.identifier.urihttp://hdl.handle.net/10754/563246en
dc.description.abstractA magnetic nanocomposite has been implemented as artificial hair on a giant magnetoimpedance (GMI) thin-film sensor for flow sensing. The 500 μm long and 100 μm in diameter pillars are composed of iron nanowires incorporated in polydimethylsiloxane (PDMS). The nanowires' length and diameter are 6 μm and 35 nm, respectively. Upon fluid flow, the pillars are deflected, causing a change in the magnetic field at the GMI element and a corresponding change in impedance. The permanent magnetic behavior of the nanowires in combination with the GMI sensor and the high elasticity of the PDMS pillars result in a high-performance flow sensor with low power consumption and potential for remote detection. No additional magnetic field is required to magnetize the nanowires or bias the sensor, which simplifies miniaturization and integration in microsystems. At a power consumption of 31.6 μW, air flow rates up to 190 mm s-1 can be detected with a sensitivity of 24 mΩ (mm)-1 s and a resolution of 0.56 mm s-1 while the range for water flow is up to 7.8 mm s-1 with a sensitivity of 0.9 Ω (mm)-1 s and a resolution of 15 μm s-1. When power consumption is reduced to as low as 80 nW a high resolution of 32 μm s-1 is still maintained.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleA magnetic nanocomposite for biomimetic flow sensingen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSensing, Magnetism and Microsystems Laben
dc.identifier.journalLab Chipen
kaust.authorAlfadhel, Ahmeden
kaust.authorLi, Bodongen
kaust.authorYassine, Omaren
kaust.authorKosel, Jürgenen
kaust.authorZaher, Amir Omaren
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.