Back to Search
Start Over
Elastic Wannier-Stark Ladders and Bloch Oscillations in 1D Granular Crystals
- Source :
- Journal of Applied Physics 123, 104904 (2018)
- Publication Year :
- 2017
-
Abstract
- We report the numerical and experimental study of elastic Wannier-Stark Ladders and Bloch Oscillations in a tunable one-dimensional granular chain consisting of cylindrical particles. The Wannier-Stark Ladders are obtained by tuning the contact angles to introduce a gradient in the contact stiffness along the granular chain. These ladders manifest as resonant modes localized in the space. When excited at the corresponding resonant frequencies, we demonstrate the existence of time-resolved Bloch Oscillations. The direct velocity measurements using Laser Doppler Vibrometry agree well with the numerical simulation results. We also show the possibility of further tailoring these Bloch Oscillations by numerical simulations. Such tunable systems could be useful for applications involving the spatial localization of elastic energy.<br />Comment: Added more references. Updated numerical results
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Journal of Applied Physics 123, 104904 (2018)
- Publication Type :
- Report
- Accession number :
- edsarx.1711.00511
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/1.5011664