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Lund, Anja
Publikationer (10 of 30) Visa alla publikationer
Syrén, F., Li, C., Billing, E., Lund, A. & Nierstrasz, V. (2016). Characterization of textile resistive strain sensors. In: : . Paper presented at 16th World Textile Conference AUTEX 2016, Ljubljana, June 8-10, 2016.
Öppna denna publikation i ny flik eller fönster >>Characterization of textile resistive strain sensors
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2016 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Nyckelord
resistive sensor, textile, characterization, resolution, hysteresis, dynamic/linear range
Nationell ämneskategori
Teknik och teknologier
Forskningsämne
Textil och mode (generell)
Identifikatorer
urn:nbn:se:hb:diva-10031 (URN)
Konferens
16th World Textile Conference AUTEX 2016, Ljubljana, June 8-10, 2016
Projekt
Bärbara sensorer i smarta textilierStrategiskt samarbete Borås-Skövde
Forskningsfinansiär
Stiftelsen för strategisk forskning (SSF)Västra Götalandsregionen, RUN 612-0197-13
Tillgänglig från: 2016-06-21 Skapad: 2016-06-16 Senast uppdaterad: 2017-05-02Bibliografiskt granskad
Rundqvist, K., Hernandez, N., Syrén, F., Lund, A. & Nierstrasz, V. (2016). Optimising position and pressure of wearable textile sensors to reduce motion artifacts. In: : . Paper presented at Printed electronics, Berlin, 2016.
Öppna denna publikation i ny flik eller fönster >>Optimising position and pressure of wearable textile sensors to reduce motion artifacts
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2016 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Nationell ämneskategori
Naturvetenskap
Identifikatorer
urn:nbn:se:hb:diva-11459 (URN)
Konferens
Printed electronics, Berlin, 2016
Tillgänglig från: 2016-12-14 Skapad: 2016-12-14 Senast uppdaterad: 2017-05-04Bibliografiskt granskad
Rundqvist, K., Hernández, N., Syrén, F., Lund, A. & Nierstrasz, V. (2016). The Challanges of Textile Sensors in Comfortable Wearable Health Monitoring Systems. In: : . Paper presented at 16th World Textile Conference AUTEX, Ljubljana, June 8-10, 2016.
Öppna denna publikation i ny flik eller fönster >>The Challanges of Textile Sensors in Comfortable Wearable Health Monitoring Systems
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2016 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
urn:nbn:se:hb:diva-10033 (URN)
Konferens
16th World Textile Conference AUTEX, Ljubljana, June 8-10, 2016
Forskningsfinansiär
Stiftelsen för strategisk forskning (SSF)
Tillgänglig från: 2016-06-16 Skapad: 2016-06-16 Senast uppdaterad: 2017-05-04Bibliografiskt granskad
Lund, A., Bazooyar, F., Wand, C. & Bolton, K. (2015). Inducing piezoelectric beta-phase in PVDF for fibre- and printed sensors. In: : . Paper presented at European Materials Research Society, 2015 Spring Meeting, Lille, France.
Öppna denna publikation i ny flik eller fönster >>Inducing piezoelectric beta-phase in PVDF for fibre- and printed sensors
2015 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Identifikatorer
urn:nbn:se:hb:diva-4069 (URN)
Konferens
European Materials Research Society, 2015 Spring Meeting, Lille, France
Tillgänglig från: 2015-12-15 Skapad: 2015-12-15 Senast uppdaterad: 2018-04-28Bibliografiskt granskad
Li, C., Bredies, K., Lund, A., Nierstrasz, V., Hemeren, P. & Högberg, D. (2015). kNN based Numerical Hand Posture Recognition using a Smart Textile Glove. In: Maarten Weyn (Ed.), Ambient 2015: The Fifth International Conference on Ambient Computing, Applications, Services and Technologies. Paper presented at The Fifth International Conference on Ambient Computing, Applications, Services and Technologies, Nice, July 19-24, 2015. (pp. 36-41).
Öppna denna publikation i ny flik eller fönster >>kNN based Numerical Hand Posture Recognition using a Smart Textile Glove
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2015 (Engelska)Ingår i: Ambient 2015: The Fifth International Conference on Ambient Computing, Applications, Services and Technologies / [ed] Maarten Weyn, 2015, s. 36-41Konferensbidrag, Publicerat paper (Refereegranskat)
Serie
Ambient, ISSN 2326-9324 ; 5
Nationell ämneskategori
Textil-, gummi- och polymermaterial Kommunikationssystem
Identifikatorer
urn:nbn:se:hb:diva-4067 (URN)978-1-61208-421-3 (ISBN)
Konferens
The Fifth International Conference on Ambient Computing, Applications, Services and Technologies, Nice, July 19-24, 2015.
Tillgänglig från: 2015-12-15 Skapad: 2015-12-15 Senast uppdaterad: 2018-03-27Bibliografiskt granskad
Lund, A., Melvinsson, R., Malm, V., Wand, C., Tahir, M. W., Skrifvars, M., . . . Nierstrasz, V. (2015). Melt Spun PVDF Actuator Fibres: the Effect of Spin-Line Orientation and MW on Actuation. In: Regional Conference Polymer Processing Society Graz 2015: Book of Abstracts. Paper presented at Polymer Processing Society Regional Conference, Graz, September 21-25, 2015. (pp. 306).
Öppna denna publikation i ny flik eller fönster >>Melt Spun PVDF Actuator Fibres: the Effect of Spin-Line Orientation and MW on Actuation
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2015 (Engelska)Ingår i: Regional Conference Polymer Processing Society Graz 2015: Book of Abstracts, 2015, s. 306-Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Abstract [en]

This paper presents the melt spinning and characterisation of polymer actuator fibres; fibres that reversibly contract along the fibre axis in response to heat. Recently, Haines et al (1) showed that low-cost filaments, e.g. fishing lines, can be relevant precursors for artificial muscles. They demonstrated a reversible fibre-direction thermal contraction, which was significantly amplified when the fibres were twisted and coiled. The effect was explained to result from an increase in the conformational entropy of the amorphous phase. In earlier studies on negative thermal expansion in anisotropic polymer structures, it has been shown that the negative thermal expansion in oriented highly crystalline polymers approaches values typical of polymer crystals (2).

 

To further investigate the mechanisms behind these seemingly simple artificial muscles, we have melt spun fibres from poly(vinylidene fluoride) (PVDF) – Solef  1006 and 1008 kindly provided by Solvay (Milan, Italy) – and compared their properties to a commercially available PVDF-fishing line. The fibres were characterised with respect to their thermal actuation properties, crystal morphology and degree of orientation along the spin-line axis.

 

We have further done modelling on the molecular and macroscopic levels examining the possible mechanisms of negative thermal expansion in semi-crystalline PVDF. We believe that tie molecules (a polymer chain linking two crystalline regions) are the predominant factor influencing actuation. Two mechanisms are considered: an entropic effect and a conformational change effect. The entropic effect causes an increase in the elastic stiffness with an increase in temperature, effectively resulting in a contraction of a strained fibre. The conformational change effect is also expected to contribute to contraction as tie molecules, under strain, revert to their unloaded preferred conformation when heated.

  1. C. S. Haines et al., Artificial Muscles from Fishing Line and Sewing Thread. Science 343, 868-872 (2014).
  2. C. L. Choy et al., Negative Thermal Expansion in Oriented Crystalline Polymers. Journal of Polymer Science: Polymer Physics Edition 19, 335-352 (1981).
Nyckelord
Smart Textiles, Actuator, Robot, Polymer
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Forskningsämne
Textil och mode (generell)
Identifikatorer
urn:nbn:se:hb:diva-857 (URN)
Konferens
Polymer Processing Society Regional Conference, Graz, September 21-25, 2015.
Projekt
Strategiskt samarbete Borås-Skövde
Tillgänglig från: 2015-10-05 Skapad: 2015-10-05 Senast uppdaterad: 2018-03-21Bibliografiskt granskad
Åkerfeldt, M., Lund, A. & Walkenström, P. (2015). Textile sensing glove with piezoelectric PVDF fibers and printed electrodes of PEDOT:PSS. Textile research journal, 85(17), 1789-1799
Öppna denna publikation i ny flik eller fönster >>Textile sensing glove with piezoelectric PVDF fibers and printed electrodes of PEDOT:PSS
2015 (Engelska)Ingår i: Textile research journal, ISSN 0040-5175, E-ISSN 1746-7748, Vol. 85, nr 17, s. 1789-1799Artikel i tidskrift (Refereegranskat) Published
Nyckelord
textile sensor, smart textile
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Forskningsämne
Textil och mode (generell)
Identifikatorer
urn:nbn:se:hb:diva-4065 (URN)10.1177/0040517515578333 (DOI)000361487600003 ()2-s2.0-84941924200 (Scopus ID)
Tillgänglig från: 2015-12-15 Skapad: 2015-12-15 Senast uppdaterad: 2018-12-01Bibliografiskt granskad
Rundqvist, K., Hernández, N., Syrén, F., Lund, A. & Nierstrasz, V. (2015). Textile sensor for human motion detection in healthcare applications. In: : . Paper presented at 9. Aachen-Dresden International Textile Conference 2015.
Öppna denna publikation i ny flik eller fönster >>Textile sensor for human motion detection in healthcare applications
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2015 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Abstract [en]

Textile sensor for human motion detection in healthcare applications This project aims to develop a wearable and comfortable sensor system useful for continuous monitoring of symptoms of epilepsy and Parkinson´s disease, and progress during rehabilitation after a stroke. The system is to monitor both physiological electrical signals and movement, providing an objective assessment tool for hospital personnel monitoring the wearer’s progress. This gives a possibility to improve diagnosis, monitor disease progression or improvement and tailor treatments. By integrating the wearable sensors into a garment, preferably into the fabric itself, we aim to develop a functional demonstrator that is comfortable enough to be accepted by the patients for daily use. [1] The use of textile sensors in healthcare applications is one step closer to a more comfortable wearable sensor system for continuous measurements. For heart rate detection textile based electrodes in garments have been investigated. e.g. [2] Our current focus is on developing textile sensors for human motion detection, connected to the specific motions regarding the neurological disorders. One approach is to integrate electromechanical properties in the textile structure, creating strain sensitive structures which give an electrical output when stretched mechanically due to movement. When investigating a suitable textile construction developing textile sensors often takes a trial and error approach, which is time consuming. In a recent study[3] we showed that the textile construction influenced the performance of a textile sensor. The study pointed to a need of a more controlled developing method, such as computer simulation, to make more accurate predictions of the sensors performance. By investigating the possibility to combine existing computer simulation programmes, such as Comsol Multiphysics and TexGen, for an assessment of the behaviour and performance of the electromechanical properties of textile structures a new design method for smart textile sensors could be achieved. In an ongoing interdisciplinary research project, wearITmed, partners from healthcare, electronics and textiles development (Sahlgrenska Academy, Acreo ICT, The Swedish School of Textiles, Swerea IVF

Nationell ämneskategori
Teknik och teknologier
Identifikatorer
urn:nbn:se:hb:diva-3346 (URN)
Konferens
9. Aachen-Dresden International Textile Conference 2015
Forskningsfinansiär
Stiftelsen för strategisk forskning (SSF)
Tillgänglig från: 2015-11-30 Skapad: 2015-11-30 Senast uppdaterad: 2016-03-04Bibliografiskt granskad
Vahlberg, A., Lund, A., Bergström, M., Park, P.-O., Nilsson, E. & Hagström, B. (2014). A textile sensor using piezoelectric fibres to measure dynamic compression in a bowel stent. Paper presented at 16th Nordic-Baltic conference on biomedical engineering and medical physics & 10th Medicinteknikdagarna, 14-16 October 2014, Gothenburg, Sweden. Paper presented at 16th Nordic-Baltic conference on biomedical engineering and medical physics & 10th Medicinteknikdagarna, 14-16 October 2014, Gothenburg, Sweden.
Öppna denna publikation i ny flik eller fönster >>A textile sensor using piezoelectric fibres to measure dynamic compression in a bowel stent
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2014 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Nyckelord
Smart textiles, Textile electronics, Textile sensors
Nationell ämneskategori
Materialteknik
Forskningsämne
Textil och mode (generell)
Identifikatorer
urn:nbn:se:hb:diva-7329 (URN)2320/14641 (Lokalt ID)2320/14641 (Arkivnummer)2320/14641 (OAI)
Konferens
16th Nordic-Baltic conference on biomedical engineering and medical physics & 10th Medicinteknikdagarna, 14-16 October 2014, Gothenburg, Sweden
Tillgänglig från: 2015-12-22 Skapad: 2015-12-22
Sandsjö, L., Rundqvist, K., Lund, A. & Persson, N.-K. (2014). Monitoring of Forefoot-Rearfoot Running Using a Piezoelectric Sock. Paper presented at Materials for Tomorrow/Sports Technology, 4-6 November, 2014, Gothenburg, Sweden. Paper presented at Materials for Tomorrow/Sports Technology, 4-6 November, 2014, Gothenburg, Sweden. Chalmers University of Technology
Öppna denna publikation i ny flik eller fönster >>Monitoring of Forefoot-Rearfoot Running Using a Piezoelectric Sock
2014 (Engelska)Konferensbidrag, Poster (med eller utan abstract) (Övrigt vetenskapligt)
Ort, förlag, år, upplaga, sidor
Chalmers University of Technology, 2014
Nyckelord
Smart Textiles
Nationell ämneskategori
Materialkemi Produktionsteknik, arbetsvetenskap och ergonomi
Forskningsämne
Textil och mode (generell)
Identifikatorer
urn:nbn:se:hb:diva-7327 (URN)2320/14590 (Lokalt ID)2320/14590 (Arkivnummer)2320/14590 (OAI)
Konferens
Materials for Tomorrow/Sports Technology, 4-6 November, 2014, Gothenburg, Sweden
Tillgänglig från: 2015-12-22 Skapad: 2015-12-22
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