Nano-to-macroscopic wave propagation in multiscale sorptive metamaterials

Dr Rodolfo Venegas

Institute of Acoustics, University Austral of Chile, Valdivia, Chile

Nano-to-macroscopic wave propagation in multiscale sorptive metamaterials

Abstract:

This work investigates wave propagation in multiscale sorptive metamaterials, which exhibit characteristic sizes ranging from nanometres to millimetres and beyond. Specifically, we examine the effective acoustic properties of:

• Multiscale sorptive porous materials.

• Metamaterials that incorporate sorptive porous materials and acoustic resonators.

Throughout the presentation, we emphasise the crucial role of internal sources on the acoustic behaviour of these materials. Additionally, we address the impact of various diffusion processes and adsorption/desorption mechanisms. The talk concludes with a discussion of our ongoing research on the molecular-to-macroscale vibroacoustic modeling of hierarchical nanoporo-elastic materials.

Bio:

Dr. Rodolfo Venegas is an Associate Professor at the Institute of Acoustics, University Austral of Chile, and leads the Laboratory of Acoustic Phenomena in Matter (ACOUSPHEM). His research interests encompass wave propagation in complex materials, multiscale physics, and upscaling techniques. After earning his PhD in Acoustics from Salford University, Dr. Venegas co-founded and served as Technical Director of the spin-off Carbon Air. He subsequently worked as a postdoctoral researcher at ENTPE & Université de Lyon and as a Senior Research Fellow at Salford University before assuming his current position. Dr. Venegas has held visiting research positions in the UK, France, Brazil, Chile, and USA. He currently serves as Associate Editor of the journal Wave Motion.