[Invited] Phononic crystal for dynamic viscosity determination. [Invited] Phononic crystal for dynamic viscosity determination: [Invited]

Archive ouverte : Communication dans un congrès

Carpentier, Laurent | Gueddida, Abdellatif | Zaremanesh, Mansour | Gharibi, Hamed | Bahrami, Ali | Mehaney, Ahmed | Lucklum, Ralf | Djafari-Rouhani, Bahram | Pennec, Yan

Edité par HAL CCSD ; SPIE

International audience. We propose a two-dimensional triangular lattice solid/fluid phononic crystals (PnC) for the determination of the acoustic properties and in particular dynamic viscosity of a fluid. We show that this device is very sensitive to the acoustic parameters of the liquid, such as density or sound velocity, and could consequently be used as a temperature sensor. This temperature sensitivity is investigated through the existence of sharp waveguide acoustic modes localized in the band gap of the PnC at well-defined frequencies. We show that this device can also be used for dynamic viscosity measurements of liquid, based on the attenuation of the guided modes.

• Contient
• Sujet
• Description
• Oeuvre