Analysis of Membrane Phononic Crystals with Wide Band Gaps and Low-Mass Defects
| Autor: | Cindy Regal, Dylan P. McNally, Gabriel G. T. Assumpcao, Ran Fischer, Chris Reetz, P.S. Burns, Jack C. Sankey |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Physics::Optics FOS: Physical sciences General Physics and Astronomy Applied Physics (physics.app-ph) 02 engineering and technology 01 natural sciences Condensed Matter::Materials Science chemistry.chemical_compound Resonator Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Acoustic metamaterials Wide band 010306 general physics Nanoscopic scale Condensed Matter - Mesoscale and Nanoscale Physics business.industry Physics - Applied Physics 021001 nanoscience & nanotechnology Membrane Mechanical dissipation Silicon nitride chemistry Optoelectronics 0210 nano-technology business Low Mass |
| Zdroj: | Physical Review Applied. 12 |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.12.044027 |
| Popis: | We present techniques to model and design membrane phononic crystals with low-mass defects, optimized for force sensing. Further, we identify the importance of the phononic crystal mass contrast as it pertains to the size of acoustic bandgaps and to the dissipation properties of defect modes. In particular, we quantify the tradeoff between high mass contrast phononic crystals with their associated robust acoustic isolation, and a reduction of soft clamping of the defect mode. We fabricate a set of phononic crystals with a variety of defect geometries out of high stress stoichiometric silicon nitride membranes, and measured at both room temperature and 4 K in order to characterize the dissipative pathways across a variety of geometries. Analysis of these devices highlights a number of design principles integral to the implementation of low-mass, low-dissipation mechanical modes into optomechanical systems. Comment: 12 pages, 11 figures |
| Databáze: | OpenAIRE |
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