Articles you may be interested in Ultrahigh Q-frequency product for optomechanical disk resonators with a mechanical shield Appl. Evanescently coupled optomechanical system with SiN nanomechanical oscillator and deformed silica microsphere Appl. Low frequency elastic wave propagation in two dimensional locally resonant phononic crystal with asymmetric resonator J.

Articles you may be interested in Dispersion engineering of high-Q silicon microresonators via thermal oxidation Appl. Investigation on the optimized design of alternate-hole-defect for 2D phononic crystal based silicon microresonators J. External acoustic load on the performance of a travelling-wave thermoacoustic engine AIP Conf.

We report on the first experimental evidence of negative refraction of surface acoustic waves, through a prism-shaped 2D phononic crystal having a solid matrix. The sample is constituted by a periodic array of air holes drilled in a Si substrate. The experiments are performed using a laser-ultrasonic technique.

Phononic crystals have attracted wide attention in diverse scientific communities due to their ability efficiently reflect, focus, and guide acoustic elastic waves. Their use ultrasonic applications such as medical imaging, however, remains elusive since three-dimensional phononic with lattice constants the range of hundreds micrometers are required operate MHz ultrasound, smaller than what mos...

We use a simple model to determine the frequency-dependent effective elastic coefficients of a three-dimensional phononic crystal, consisting of periodically arranged solid spheres embedded in fluid host, through theoretical calculations of the transmission coefficient and frequency band structure diagrams, using multiple-scattering techniques. Our results are successfully compared to those obt...

Recent years have witnessed the boom of cavity optomechanics, which exploits the confinement and coupling of optical and mechanical waves at the nanoscale. Amongst their physical implementations, optomechanical (OM) crystals 4,5 built on semiconductor slabs enable the integration and manipulation of multiple OM elements in a single chip and provide GHz phonons suitable for coherent phonon manip...

We present the fabrication and characterization of an artificial crystal structure formed from a thin film of silicon that has a full phononic band gap for microwave X-band phonons and a two-dimensional pseudo-band gap for near-infrared photons. An engineered defect in the crystal structure is used to localize optical and mechanical resonances in the band gap of the planar crystal. Two-tone opt...

In this paper, we investigate the acoustic flatbands (FBs) in phononic crystal (PnC) defect lattices. The defects are introduced into a PnC composed of periodic rigid rods air background. Since energy is highly confined inside defects, interaction between can be described by tight-binding model. We construct two bipartite lattices, namely, stub and Lieb FBs observed for both Moreover, protected...