| Titre : |
High performance strain sensor based on leather activated by micro-cracking conductive layer |
| Type de document : |
texte imprimé |
| Auteurs : |
Jianzhong Ma, Auteur ; Zhijie Cheng, Auteur ; Sha Tan, Auteur ; Tian Zheng, Auteur ; Yan Zong, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
12 p. |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Capteurs de contraintes
Cuir
Hydroxydes doubles lamellaires
Nanotubes de carbone à parois multiplesUn nanotube de carbone multifeuillet est constitué de plusieurs feuillets de graphènes enroulés les uns autour des autres. Il existe deux modèles pour décrire la structure des nanotubes multifeuillets :
- le modèle poupée russe: les plans de graphène sont arrangés en cylindres concentriques ;
- le modèle parchemin: un seul feuillet de graphène est enroulé sur lui-même, comme une feuille de papier.
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Flexible strain sensors are capable to detect external force induced strain change owing to their unique ability to convert deformation into electrical signals. Generally, micro/nano patterning of conductive layer in strain sensor is an effective method to improve its sensitivity, however the sophisticated manipulation process is limited only in laboratory scale. In this report, a simple and scalable fabrication strategy was used to create micro-cracking conductive layer as an alternative patterning method to achieve high performance of strain sensor. In details, the sensor was fabricated using leather as the substrate to filtrated acidified multi-walled carbon nanotubes (a-MWCNTs)/layered double hydroxides (LDHs) suspension. During stretching process, micro-cracking structure emerged on the percolated a-MWCNTs/LDHs layer, causing a rise up of resistance according to increasing strain and generated a detectable electrical signal. The prepared sensor had a large detecting range (60%), high sensitivity (GF of 7238.92 at strain 30–60%), fast response (tensile response time of 270 ms), good stability and repeatability. The sensor also inherited the advantages of leather, such as biodegradability and good air permeability, and the introduction of a-MWCNTs/LDHs further enhanced its fire retardancy properties. These features ensured the sensor as an eco-friendly, comfortable and safe electronic device for human motion detection. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Preparation of a-MWCNTs - Preparation of a-MWCNTs/LDHs suspensions - Preparation of the a-MWCNTs/LDHs/leather sensors - Characterization
- RESULTS AND DISCUSSION : Fabrication of a-MWCNTs/LDHs/leather composite sensor - Morphologies and structures of a-MWCNTs, LDHs, a-MWCNTs/LDHs and a-MWCNTs/LDHs/leather - Sensing performance of a-MWCNTs/LDHs/leather composite sensors - Flame retardant properties of a-MWCNTs/LDHs/leather composites - Hygienic and mechanical properties of a-MWCNTs/LDHs/leather composites
- Table 1 : Vertical burning test of leather and leather based composites |
| DOI : |
https://doi.org/10.1186/s42825-023-00134-6 |
| En ligne : |
https://link.springer.com/content/pdf/10.1186/s42825-023-00134-6.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40074 |
in COLLAGEN AND LEATHER > Vol. 5 (2023) . - 12 p.
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High performance strain sensor based on leather activated by micro-cracking conductive layer in COLLAGEN AND LEATHER, Vol. 5 (2023)
