Photoactuation of micromechanical devices by photochromic molecules - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Materials Advances Année : 2021

Photoactuation of micromechanical devices by photochromic molecules

Liviu Nicu
Lucie Routaboul
L. Salmon
Gábor Molnár

Résumé

Spiropyran doped P(VDF-TrFE) nanocomposite films were spray-coated onto silicon micro-cantilevers. We show that switching the molecules from the closed- to the open-ring form by UV light gives rise to a downward bending of the cantilever as well as to a decrease of its resonance frequency. This photoactuation is reversible by means of heating and simultaneous visible light irradiation. From the flexural bending and resonance data, we extracted the actuation strain (0.13 ± 0.03%), stress (4 ± 1 MPa) and elastic energy density (2.3 ± 1 mJ cm−3) associated with the photoisomerization of spiropyran molecules in the composite films.

Domaines

Matériaux
Fichier principal
Vignette du fichier
Openacces_DOI10.1039.d1ma00480h.pdf (3.42 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03285954 , version 1 (13-07-2021)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

José Elías Angulo-Cervera, Mario Piedrahita-Bello, Barbora Brachňaková, Alejandro Enríquez-Cabrera, Liviu Nicu, et al.. Photoactuation of micromechanical devices by photochromic molecules. Materials Advances, 2021, 2 (15), pp.5057-5061. ⟨10.1039/d1ma00480h⟩. ⟨hal-03285954⟩
90 Consultations
59 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More