Projects per year
Abstract
The modification of phononic crystals by surface structuring allows obtaining a new parameter describing the dynamics of the structure produced in this way. We have investigated the dispersion relation of surface acoustic waves propagating in a phononic material which is based on nanometer-scale surface modulation using interconnected one-dimensional array of stripes and a two-dimensional array of pillars. The influence of these two array components on the dispersion relation has been determined experimentally (Brillouin light scattering) and theoretically (Finite Element Method). The interaction of these two nanostructures supports a new mode which is not observed in independent structures of pillars and stripes. The influence of the relative position of these two nanostructures on the frequency of the new mode has been determined.
Original language | English |
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Article number | 106146 |
Pages (from-to) | 1-7 |
Number of pages | 7 |
Journal | ULTRASONICS |
Volume | 106 |
DOIs | |
Publication status | Published - Aug 2020 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Brillouin scattering spectroscopy
- Finite Element Method
- Phononic
- Surface phonons
Fingerprint
Dive into the research topics of 'Generation of a mode in phononic crystal based on 1D/2D structures'. Together they form a unique fingerprint.Projects
- 3 Finished
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-: Finnish Centre of Excellence in Quantum Technology
Hakonen, P. (Principal investigator)
01/05/2020 → 31/12/2022
Project: Academy of Finland: Other research funding
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-: European Microkelvin Platform
Hakonen, P. (Principal investigator)
01/01/2019 → 31/12/2023
Project: EU: Framework programmes funding
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BOLOSO: Ultrasensitive bolometers for security applications
Hakonen, P. (Principal investigator)
01/01/2018 → 31/08/2022
Project: Academy of Finland: Other research funding
Equipment
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OtaNano – Low Temperature Laboratory
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility