From the Band Structure to the Acoustical Zero/Negative Refraction——"Fundamentals of Acoustical"Teaching Design
To overcome the limitation of the traditional acoustical refraction law,the band structure theory is used to research the artificial acoustic materials.To elaborate the advantage of the band structure theory,the negative and zero refractions in two-dimensional(2D)sonic crystals(SCs)are investigated.Further numerical simulations are operated to verify the negative and zero refractions depicted by the band structure.Combining the scientific frontiers,the students achieve overall understanding of the concept of the acoustical refraction.
band structureacoustical refractionnegative refractionzero refraction
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