Resonant vibration of a thin polymer film under optical excitation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Soft Matter Année : 2021

Resonant vibration of a thin polymer film under optical excitation

Janine Emile
O. Emile
Connectez-vous pour contacter l'auteur
P. Gaudriault
  • Fonction : Auteur

Résumé

We report on the mechanical excitation of a 220 μm thick thermoplastic film in its amorphous state by the radiation pressure of light. By modulating a low power visible laser (from 100 to 600 mW) at low frequencies (below 100 Hz), we observe a deformation of the film interfaces. The phenomenon, that is independent of the laser wavelength, is amplified at a resonant frequency and reaches 0.68 μm. The deformation is reversible and varies linearly with the optical power. Using the damped oscillator model, we show that the resonant frequency depends on the surface tension of the film. The associated free energy is then compared with the energy lost, taking into account the contribution of the damping corresponding to the imaginary part of the Young's modulus.
Fichier principal
Vignette du fichier
EMILE-2021-Resonant vibration of a thin polymer film under optical excitation.pdf (1.01 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03225419 , version 1 (20-05-2021)

Identifiants

Citer

Janine Emile, O. Emile, P. Gaudriault. Resonant vibration of a thin polymer film under optical excitation. Soft Matter, 2021, 17 (14), pp.3923-3928. ⟨10.1039/d1sm00016k⟩. ⟨hal-03225419⟩
61 Consultations
100 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More