An electronic nose on flexible substrates integrated into a smart textile

Kinkeldei, Thomas; Zysset, Christoph; Münzenrieder, Niko; Tröster, Gerhard

doi:10.1016/j.snb.2012.08.023

Cited by 55 publications

(26 citation statements)

References 34 publications

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“…Moreover, another challenge arises during weaving when strips or yarns bend and strain leads to device failure, this is especially a problem in brittle inorganic layers [5,10]. One possible solution is the use of conductive polymers that can be strained up to 50% without changing the performance [11]. An ideal e-textile should "stretch and recover, drape and handle", and retain conventional textile behavior [12].…”

Section: Introductionmentioning

confidence: 99%

Conductive nylon fabric through in situ synthesis of nano-silver: Preparation and characterization

Montazer

Komeily‐Nia

2015

Materials Science and Engineering: C

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Section: Introductionmentioning

confidence: 99%

Conductive nylon fabric through in situ synthesis of nano-silver: Preparation and characterization

Montazer

Komeily‐Nia

2015

Materials Science and Engineering: C

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“…As conductive filler, Ensaco G350 from Timcal was used. Details for the polymer preparation can be found elsewhere [17]. Polyetherimide (PEI) foil (Ajedium Films) was used as flexible substrate material.…”

Section: Methodsmentioning

confidence: 99%

In Tube Integrated Electronic Nose System on a Flexible Polymer Substrate

Kinkeldei¹,

Zysset²,

Münzenrieder³

et al. 2012

Sensors

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The fabrication of electronic devices, such as gas sensors on flexible polymer substrates, enables the use of electronics in applications where conventional devices on stiff substrates could not be used. We demonstrate the development of a new intra-tube electronic-nose (e-nose) gas sensor device with multiple sensors fabricated and integrated on a flexible substrate. For this purpose, we developed a new method of fabricating a sensor array of four gas sensors on a flexible polymer substrate. The method allowed the use of lithography techniques to pattern different polymers with a broad range of solubility parameters. Conductive polymer composites were used as a gas sensitive layer due to the high stretchability of the material. Each of the 30 e-nose devices on one substrate was designed to fit on a polymer strip with a width of 2 mm. A single e-nose strip was successfully integrated into the inlet tube of a gas-measurement apparatus with an inner-tube diameter of 3 mm. Using the e-nose, we were able to differentiate between four different volatile solvent vapors. The tube-integrated e-nose outperformed a chamber-integrated e-nose of the same type in terms of response time and flow-rate influences. The sensor array inside the tube showed a faster response time and detected short pulses of analyte exposure compared to the same sensor array outside of the tube. We measured gas flow rates from 1,000 to 30 sccm without significant changes in sensor performance using this intra-tube e-nose prototype. The tube could be bent to radii <15 mm with a sensor performance similar to an unbent sensor.

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“…In principle, this humidity-sensitive polymer layer could be replaced by a gassensitive polymer to target other analytes. Troester's group in ETHZ has demonstrated the use of carbon black/polymer sensors in a similar woven Kapton film configuration to detect vapor such as acetone [53].…”

Section: Textile Integrationmentioning

confidence: 99%