Modeling light-sound interaction in nanoscale cavities and waveguides

Y Pennec, V Laude, N Papanikolaou… - …, 2014 - degruyter.com
The interaction of light and sound waves at the micro and nanoscale has attracted
considerable interest in recent years. The main reason is that this interaction is responsible …

Thermodynamic study of advanced supercritical carbon dioxide power cycles for concentrating solar power systems

CS Turchi, Z Ma, TW Neises… - Journal of Solar …, 2013 - asmedigitalcollection.asme.org
Supercritical CO2 (s-CO2) operated in a closed-loop Brayton cycle offers the potential of
higher cycle efficiency versus superheated or supercritical steam cycles at temperatures …

Selective mode conversion and rainbow trapping via graded elastic waveguides

JM De Ponti, L Iorio, E Riva, R Ardito, F Braghin… - Physical Review …, 2021 - APS
We experimentally achieve wave-mode conversion and rainbow trapping in an elastic
waveguide loaded with an array of resonators. Rainbow trapping is a phenomenon that …

A one-dimensional optomechanical crystal with a complete phononic band gap

J Gomis-Bresco, D Navarro-Urrios, M Oudich… - Nature …, 2014 - nature.com
Recent years have witnessed the boom of cavity optomechanics, which exploits the
confinement and coupling of optical and mechanical waves at the nanoscale. Among their …

[HTML][HTML] Dispersion characteristics of a nonlinear elastic metamaterial

R Khajehtourian, MI Hussein - Aip Advances, 2014 - pubs.aip.org
We study wave dispersion in a one-dimensional nonlinear elastic metamaterial consisting of
a thin rod with periodically attached local resonators. Our model is based on an exact finite …

Nonlinear dynamics and chaos in an optomechanical beam

D Navarro-Urrios, NE Capuj, MF Colombano… - Nature …, 2017 - nature.com
Optical nonlinearities, such as thermo-optic mechanisms and free-carrier dispersion, are
often considered unwelcome effects in silicon-based resonators and, more specifically …

Microwave oscillator and frequency comb in a silicon optomechanical cavity with a full phononic bandgap

L Mercadé, LL Martín, A Griol, D Navarro-Urrios… - …, 2020 - degruyter.com
Cavity optomechanics has recently emerged as a new paradigm enabling the manipulation
of mechanical motion via optical fields tightly confined in deformable cavities. When driving …

Acousto-optic couplings in two-dimensional phoxonic crystal cavities

Q Rolland, M Oudich, S El-Jallal, S Dupont… - Applied Physics …, 2012 - pubs.aip.org
We investigate the acousto-optic coupling, based on both photo-elastic and opto-
mechanical mechanisms, in periodic structures with simultaneous photonic and phononic …

Enhanced energy harvesting of flexural waves in elastic beams by bending mode of graded resonators

JM De Ponti, L Iorio, E Riva, F Braghin… - Frontiers in …, 2021 - frontiersin.org
We show efficient elastic energy transfer and wave confinement through a graded array of
resonators attached to an elastic beam. Experiments demonstrate that flexural resonators of …

Fundamental properties of phononic crystal

Y Pennec, B Djafari-Rouhani - Phononic crystals, 2016 - Springer
The control and manipulation of acoustic/elastic waves is a fundamental problem with many
potential applications, especially in the field of information and communication technologies …