Investigating the impact of shear and bulk viscosity on the damping of confined acoustic modes in phononic crystal sensors.

ABSTRACT: Phononic crystal (PnC) sensors are recognized for their capability to control acoustic wave propagation through periodic structures, presenting considerable potential across various applications. Despite advancements, the effects of fluid viscosity on PnC performance remain intricate and inadequately understood. This study theoretically investigates the influence of shear (dynamic) and bulk viscosity on acoustic wave damping in defective one-dimensional phononic crystal (1D PnC) sensors designed for detecting liquid analytes. Acetic acid with varying viscosities is considered to fill a cavity layer intermediated by a multilayer stack of lead and epoxy. The effects of dynamic and bulk viscosity on the resonance characteristics of the defective mode were analyzed. Numerical results reveal th

SUBMITTER: Elsayed HA 

PROVIDER: S-EPMC11442684 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature