Phonons hushed | Nature Nanotechnology
WebAug 8, 2022 · Phonons hushed. Ilari J. Maasilta. Nature Nanotechnology 17 , 905 ( 2022) Cite this article. 919 Accesses. 1 Citations. 3 Altmetric. Metrics. A clever phononic crystal design produces a wide...
Origin of the Acoustic Bandgaps in Hypersonic Colloidal Phononics…
WebThe extension to high-frequency phononics to enable simultaneous manipulation of hypersonic phonons (GHz range) and visible light (400–800THz), and signal processing in wireless communication devices, needs organization in the submicron and nanometer scale range via self-assembly and nanofabrication techniques.
A new class of tunable hypersonic phononic crystals based on polymer ...
WebSep 22, 2015 · Phononic crystals (PnC), that is, composite materials in which a periodic distribution of elastic parameters facilitates control of the propagation of phonons, hold the promise to enable...
Phonon Engineering of Micro‐ and Nanophononic Crystals and …
WebSuch superwavelength bandgaps are important in engineering thermal transport and GHz–THz phonon engineering applications at nano- and microscales. For both micro- and nanoscale systems, a phonon dispersion analysis would be informative to understand the linear vibration of PnCs and AMMs.
Nanocrystal phononics | Nature Materials
WebJan 26, 2023 · Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters. Article Open access 17 August 2020. Main. Colloidal nanocrystals (NCs) or ‘colloidal...
Tunable Graphene Phononic Crystal | Nano Letters - ACS …
WebBandgaps arising in such phononic crystals (PnCs) realize low-dissipation vibrational modes and enable applications toward mechanical qubits, efficient waveguides, and state-of-the-art sensing. Here, we combine phononics and two-dimensional materials and explore tuning of PnCs via applied mechanical pressure.
Origin of the Acoustic Bandgaps in Hypersonic Colloidal Phononics…
WebSep 9, 2022 · The extension to high-frequency phononics to enable simultaneous manipulation of hypersonic phonons (GHz range) and visible light (400–800THz), and signal processing in wireless communication devices, needs organization in the submicron and nanometer scale range via self-assembly and nanofabrication techniques. 2 The …
Mechanically-tunable bandgap closing in 2D graphene phononic …
WebFeb 23, 2023 · Phononic crystals (PnCs) are artificial structures in which the periodic variation of material properties (e.g. stiffness, mass, or tension) give rise to a phononic band structure—in analogy...
Triple tunability of phononic bandgaps for three ... - ScienceDirect
WebMay 1, 2022 · The results show that phononic bandgaps can be magnified by 37.5%. The findings reported here provide a path for designing phononic lattices with controllable and broad band gaps, offering extensive potential applications in acoustic and vibration suppression, wave guiding or filtering, and non-destructive testing. Graphical abstract.
A new class of tunable hypersonic phononic crystals based on polymer …
WebSep 22, 2015 · Hybridization-type band gaps are known to persist in phononic crystals, but their fabrication remains challenging for all-solid hypersonic composites. Here, the authors utilize the elastic anisotropy at the interface of polymer-tethered colloidal particles to control phonon propagation in GHz regime.
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