Phononic Crystal Material that Creates Acoustic and Elastic Flatbands for Acoustic and Vibration Dampening Applicaitons

Case ID:

This invention is generally directed towards phononic crystals (PCs) more specifically to phononic metamaterials suitable for attenuating mechanical vibrations, as well as acoustic vibrations that propagate through a medium. 



Phononic metamaterials enable the manipulation of both elastic and acoustic waves in different media, from attenuation (including absorption and reflection) to coupling, tunneling, negative refraction, and focusing.  In particular, the attenuation of vibration such as vector mechanical vibrations through a solid, or a scalar acoustic vibration in a medium, such as in air or water, is important technology for applications where the presence of vibrations affects the intended performance of the device or entity in question, such as but not limited to a vehicle. 



  • Automotive Industry
  • Aerospace Industry
  • Machinery
  • Robotics
  • Mechanical Applications--Assembly
  • Mining Industry
  • Medical Device Industry—specifically related to acoustics
  • Most engineering applications where reduction of vibration and acoustics is important


Advantages: The invention provides significant improvement of attenuation of vibration. 


Status: issued U.S. patent #8,875,838

Patent Information:
Contact For More Information:
Tariq Ahmed
Sr Licensing Manager, College of Engineering
The University of Arizona
Lead Inventor(s):
Pierre Deymier
Nichlas Swinteck
Kazuhisa Yano
Debasish Banerjee
Songtao Wu
Gaohua Zhu