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Highly stable low-strain flexible sensors based on gold nanoparticles/silica nanohelices

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorAMESTOY, Antoine
hal.structure.identifierÉquipe Microsystèmes électromécaniques [LAAS-MEMS]
dc.contributor.authorRANGRA, Aarushee
hal.structure.identifierÉquipe Microsystèmes électromécaniques [LAAS-MEMS]
dc.contributor.authorMANSARD, Vincent
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDELVILLE, Marie-Hélène
hal.structure.identifierNANOMADE LAB
dc.contributor.authorSEVERAC, Fabrice
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorPOUGET, Emilie
hal.structure.identifierNANOMADE LAB
dc.contributor.authorMAZALEYRAT, Estelle
hal.structure.identifierÉquipe Microsystèmes électromécaniques [LAAS-MEMS]
dc.contributor.authorSAYA, Daisuke
hal.structure.identifierÉquipe Microsystèmes électromécaniques [LAAS-MEMS]
dc.contributor.authorBERGAUD, Christian
hal.structure.identifierChimie et Biologie des Membranes et des Nanoobjets [CBMN]
dc.contributor.authorODA, Reiko
dc.date.issued2023
dc.identifier.issn1944-8244
dc.description.abstractEnFlexible strain sensors based on nanoparticle (NP) arrays show great potential for future applications such as electronic skin, flexible touchscreens, healthcare sensors, and robotics. However, even though these sensors can exhibit high sensitivity, they are usually not very stable under mechanical cycling and often exhibit large hysteresis, making them unsuitable for practical applications. In this work, strain sensors based on silica nanohelix (NH) arrays grafted with gold nanoparticles (AuNPs) can overcome these critical aspects. These 10 nm AuNPs are functionalized with mercaptopropionic acid (MPA) and different ratios of thiol-polyethylene glycol-carboxylic acid (HS-PEG7-COOH) to optimize the colloidal stability of the resulting NH@AuNPs nanocomposite suspensions, control their aggregation state, and tune the thickness of the insulating layer. They are then grafted covalently onto the surface of the NHs by chemical coupling. These nanomaterials exhibit a well-defined arrangement of AuNPs, which follows the helicity of the silica template. The modified NHs are then aligned by dielectrophoresis (DEP) between interdigitated electrodes on a flexible substrate. The flexibility, stability, and especially sensitivity of these sensors are then characterized by electromechanical measurements and scanning electron microscopy observations. These strain sensors based on NH@AuNPs nanocomposites are much more stable than those containing only nanoparticles and exhibit significantly reduced hysteresis and high sensitivity at very slight strains. They can retain their sensitivity even after 2 million consecutive cycles with virtually unchanged responsiveness. These improved performances come from their mechanical stability and the use of nanohelices as stable mechanical templates.
dc.description.sponsorshipAssemblage de type " bottom-up " de Nanohélices fonctionnalisées: un pas de plus vers des dispositifs flexibles. - ANR-15-CE08-0041
dc.language.isoen
dc.publisherWashington, D.C. : American Chemical Society
dc.subject.enStrain sensor
dc.subject.enSilica nanohelices
dc.subject.enGold nanoparticles
dc.subject.enSelf-assembly
dc.subject.enDielectrophoresis
dc.subject.enFlexible electronics
dc.title.enHighly stable low-strain flexible sensors based on gold nanoparticles/silica nanohelices
dc.typeArticle de revue
dc.identifier.doi10.1021/acsami.3c05852
dc.subject.halChimie/Matériaux
dc.subject.halPhysique [physics]/Physique [physics]/Instrumentations et Détecteurs [physics.ins-det]
bordeaux.journalACS Applied Materials & Interfaces
bordeaux.page39480-39493
bordeaux.volume15
bordeaux.issue33
bordeaux.peerReviewedoui
hal.identifierhal-04187756
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04187756v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ACS%20Applied%20Materials%20&%20Interfaces&rft.date=2023&rft.volume=15&rft.issue=33&rft.spage=39480-39493&rft.epage=39480-39493&rft.eissn=1944-8244&rft.issn=1944-8244&rft.au=AMESTOY,%20Antoine&RANGRA,%20Aarushee&MANSARD,%20Vincent&DELVILLE,%20Marie-H%C3%A9l%C3%A8ne&SEVERAC,%20Fabrice&rft.genre=article


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