(Dynamics and Controls)
Symposium Organizers:
Amr Baz, University of Maryland
Baz@umd.edu
Mahmoud Hussein, University of Colorado
mih@colorado.edu
Ihab El-Kady, Sandia National Laboratories
ielkady@sandia.gov
Symposium Technical Description
This symposium is intended to bring together researchers and engineers from universities, government laboratories and industry to discuss research ideas and recent findings in these topics. Phononic crystals and acoustic/elastic metamaterials are composite/non-uniform materials within which periodic, or generally spatially dependent, elastic or acoustic properties are engineered to achieve exceptional control over wave propagation. Typically phononic crystals exhibit unique wave propagation characteristics at wavelengths comparable to the size of the unit cell’s period where Bragg effects from multiple scattering create frequency band gaps that can be exploited. Acoustic/elastic metamaterials use local resonances, and/or other unique elastic and/or inertial properties, to achieve large variations in effective material parameters. These traits are being increasingly utilized for the realization of materials with negative effective modulus/ mass density, negative index of refraction, enhanced dissipation, among others. Both phononic crystals and metamaterials have fundamental implications to a wide range of applications including focusing, imaging, thermal transport, flow control, and noise/vibration control based on interferences, resonances and possibly other phenomena.
Topics solicited include, but are not limited to:
- elastic/acoustic wave propagation phenomena such as band-gap formation,
- wave localization,
- waveguides,
- negative refraction,
- focusing,
- nonlinearity/damping,
- homogenization,
- topological acoustics,
- nonreciprocal systems.
- active and passive phononic crystals and metamaterials
Research studies may be experimental, theoretical, and/or numerical in nature and can address efforts to understand the dynamics of these materials and/or the development of design and fabrication techniques
Technical Program
Tuesday | T1 10:00am-11:40am
| F4-1: Acoustic Metamaterials | ||
| Room 2108 | Session Chair: Michael Leamy |
Track F: Dynamics and Controls |
| 10:00 am | Transformation acoustics, phononic structures and focusing (Invited)
Andrew Norris, Xiaoshi Su |
|
| 10:40 am | Wave field mapping in acoustic metamaterials using optical fiber probe
Miao Yu |
|
| 11:00 am | Active nonreciprocal acoustic metamaterials
Amr M. Baz |
|
| 11:20 am | Nonlinearity based use of acoustic metamaterials
Saliou B. Telly, Balakumar Balachandran |
|
Tuesday | T2 13:00pm-14:40pm
| F4-2: Wave Propagation in Metamaterials (1) | ||
| Room 2108 |
Session Chair: Massimo Ruzzene |
Track F: Dynamics and Controls |
| 13:00 pm | Nonlinear periodic media and metamaterials: invariant waveforms and reflected spectral content (Invited)
Matthew Fronk, Michael Leamy |
|
| 13:40 pm | Manipulating waves by distilling frequencies: a tunable shunt-enabled rainbow trap
Paolo Celli, Stefano Gonella |
|
| 14:00 pm | Dissipative elastic metamaterials for broadband subwavelength wave mitigation
Guoliang Huang |
|
| 14:20 pm | Observation of trampoline effects in locally-resonant and inertially-amplified meta-plates
Osama R. Bilal, André G. C. Foehr, Chiara Daraio |
|
Tuesday | T3 15:00pm-16:40pm
| F4-3: Phononic Crystals | ||
| Room 2108 |
Session Chair: Ihab El-Kady |
Track F: Dynamics and Controls |
| 15:00 pm | Phononic crystals: experimental investigations into RF acoustic components and reduction of thermal conductivity (Invited)
Zayd Leseman |
|
| 15:40 pm | Acoustic beam splitting based on self-collimation in 2D phononic crystals
Yuning Guo, Mike Hettich, Thomas Dekorsy |
|
| 16:00 pm | A phononic crystal based quantum computer
Ihab El-Kady |
|
| 16:20 pm | Nano-scale optomechanical devices and phononic crystals for RF signal processing
Charles M. Reinke, Heedeuk Shin, Aleem Siddiqui, Jonathan Cox, Robert Jarecki, Andrew Starbuck, Peter Rakich |
|
Wednesday | W1 10:00am-11:40am
| F4-4: Wave Propagation in Metamaterials (2) | ||
| Room 2108 |
Session Chair: Amr M. Baz |
Track F: Dynamics and Controls |
| 10:00 am | In-plane elastic waves measurement in lattice structures via digital image correlation (Invited)
Marshall Schaeffer, Giuseppe Trainiti, Massimo Ruzzene |
|
| 10:40 am | Elastic wave propagation in hydrostatically stressed polycrystals
Christopher Michael Kube |
|
| 11:00 am | Topology optimization of a constrained layer damping plate coupled with an acoustic cavity
Ling Zheng |
|
| 11:20 am | Band gap characteristics of gyroscopic periodic systems
Yaser Alsafar, Sadok Sassi, Amr Baz |
|