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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Wollack, Edward
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Topics
Publications (17/17 displayed)
- 2022Plasma based production of AlF<SUB>3</SUB>-passivated aluminum mirrors for UVOIR astronomycitations
- 2022Characterization of aerogel scattering filters for astronomical telescopes
- 2022Testing CMB Anomalies in E-mode Polarization with Current and Future Data
- 2021Process for fabricating one or more ultra-large area nanoscale polymer films
- 2021Fabricating ultra-thin structured polymer films
- 2021The Simons Observatory: metamaterial microwave absorber and its cryogenic applications.citations
- 2020The CLASS 150/220 GHz Polarimeter Array: Design, Assembly, and Characterizationcitations
- 2019Low-Loss Microstrip Transmission Line Fabricated with Improved Liftoff Process
- 2018Modeling Strategies for Superconducting Microstrip Transmission Line Structurescitations
- 2017Superconducting Vacuum-Gap Crossovers for High Performance Microwave Applicationscitations
- 2016Superconducting Vacuum-Gap Crossovers for High Performance Microwave Applications
- 2016Wide-stopband aperiodic phononic filterscitations
- 2016Silicon-Based Antenna-Coupled Polarization-Sensitive Millimeter-Wave Bolometer Arrays for Cosmic Microwave Background Instrumentscitations
- 2014A Cryogenic Infrared Calibration Targetcitations
- 2008Compact Low-Loss Planar Magic-T
- 2007Electromagnetic and Thermal Properties of a Conductively Loaded Epoxycitations
- 2005Ultra-Compact Broadband High-Spurious Suppression Bandpass Filter Using Double Split-end Stepped Impedance Resonators
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article
Wide-stopband aperiodic phononic filters
Abstract
We demonstrate that a phonon stopband can be synthesized from an aperiodic structure comprising a discrete set of phononic filter stages. Each element of the set has a dispersion relation that defines a complete bandgap when calculated under a Bloch boundary condition. Hence, the effective stopband width in an aperiodic phononic filter (PnF) may readily exceed that of a phononic crystal with a single lattice constant or a coherence scale. With simulations of multi-moded phononic waveguides, we discuss the effects of finite geometry and mode-converting junctions on the phonon transmission in PnFs. The principles described may be utilized to form a wide stopband in acoustic and surface wave media. Relative to the quantum of thermal conductance for a uniform mesoscopic beam, a PnF with a stopband covering 1.6-10.4 GHz is estimated to reduce the thermal conductance by an order of magnitude at 75 mK.