Mode Coupling of Phonons in a Dense One-Dimensional Microfluidic Crystal
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2013
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| _version_ | 1866914817128792064 |
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| author | Fleury, Jean-Baptiste Schiller, Ulf D Thutupalli, Shashi Gompper, Gerhard Seemann, Ralf |
| author_facet | Fleury, Jean-Baptiste Schiller, Ulf D Thutupalli, Shashi Gompper, Gerhard Seemann, Ralf |
| contents | Long-living coupled transverse and longitudinal phonon modes are explored in dense and regular arrangements of flat microfluidic droplets. The collective oscillations are driven by hydrodynamic interactions between the confined droplets and can be excited in a controlled way. Experimental results are quantitatively compared to simulation results obtained by multi-particle collision dynamics. The observed transverse modes are acoustic phonons and can be described by a linearized far-field theory, whereas the longitudinal modes arise from a non-linear mode coupling due to the lateral variation of the flow field under confinement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1310_3655 |
| institution | arXiv |
| publishDate | 2013 |
| record_format | arxiv |
| spellingShingle | Mode Coupling of Phonons in a Dense One-Dimensional Microfluidic Crystal Fleury, Jean-Baptiste Schiller, Ulf D Thutupalli, Shashi Gompper, Gerhard Seemann, Ralf Soft Condensed Matter Long-living coupled transverse and longitudinal phonon modes are explored in dense and regular arrangements of flat microfluidic droplets. The collective oscillations are driven by hydrodynamic interactions between the confined droplets and can be excited in a controlled way. Experimental results are quantitatively compared to simulation results obtained by multi-particle collision dynamics. The observed transverse modes are acoustic phonons and can be described by a linearized far-field theory, whereas the longitudinal modes arise from a non-linear mode coupling due to the lateral variation of the flow field under confinement. |
| title | Mode Coupling of Phonons in a Dense One-Dimensional Microfluidic Crystal |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/1310.3655 |