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Updated: Dec 23, 2025
13:02
Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
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Generation of a mode in phononic crystal based on 1D/2D structures
A Trzaskowska1, P Hakonen2, M Wiesner1
1Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614 Poznan, Poland.
Ultrasonics
|April 20, 2020
Summary
Surface structuring of phononic crystals reveals a novel acoustic mode. This new mode, arising from combined stripe and pillar arrays, offers unique insights into phononic material dynamics.
Area of Science:
- Materials Science
- Acoustics
- Nanotechnology
Background:
- Phononic crystals offer tunable acoustic properties through structural design.
- Surface structuring introduces new parameters for controlling phononic material dynamics.
Purpose of the Study:
- Investigate surface acoustic wave dispersion in nanostructured phononic materials.
- Characterize the influence of combined stripe and pillar arrays on acoustic properties.
- Identify and analyze novel acoustic modes generated by synergistic nanostructures.
Main Methods:
- Experimental analysis using Brillouin light scattering.
- Theoretical modeling via the Finite Element Method.
- Fabrication of phononic materials with patterned surface arrays (stripes and pillars).
Main Results:
- A new surface acoustic wave mode was observed, distinct from modes in isolated stripe or pillar structures.
- The dispersion relation was experimentally and theoretically determined for the nanostructured phononic material.
- The frequency of the novel mode is dependent on the relative positioning of the stripe and pillar arrays.
Conclusions:
- Surface structuring of phononic crystals with combined nanostructures enables the emergence of new acoustic modes.
- The interaction between different nanostructure geometries (stripes and pillars) is crucial for generating unique dynamic properties.
- Precise control over nanostructure arrangement allows for tuning the frequency of these novel acoustic modes.
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