Phononic metamaterials
An acoustic metamaterial, sonic crystal, or phononic crystal, is a material designed to control, direct, and manipulate sound waves or phonons in gases, liquids, and solids (crystal lattices). Sound wave control is accomplished through manipulating parameters such as the bulk modulus β, density ρ, and chirality. They can be engineered to either transmit, or trap and amplify sound waves at certain frequencies. In the latter case, the material is an acoustic resonator. WebIn this work, taking GaN–AlN contact as an example, we demonstrated a new mechanism to enhance the interfacial thermal conductance using nano-phononic metamaterials. First, …
Phononic metamaterials
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WebOct 23, 2024 · Acoustic metamaterials (AMM) and phononic crystals (PC) have the potential to unfold a new wave of disruptive technologies to radically transform human interactions, sensory communications, and beyond. Although essential, cultivating a deep understanding of the fundamental theory and design principles is insufficient alone, in the practical ... WebMar 3, 2024 · The multifunctionality of graphene metamaterials offer a novel platform for manufacturing innovative optical and photonic devices with the advantages of broad …
WebMar 22, 2024 · Intended for the vibration and noise control problems faced by many engineering fields, a fresh variety of phononic crystal beam structure was constructed by attaching a one-dimensional periodic multilayer cylinder to a double-layer beam structure. Utilizing the finite element method and the Bloch theorem, the vibration modes of the … WebA seismic metamaterial, is a metamaterial that is designed to counteract the adverse effects of seismic waves on artificial structures, which exist on or near the surface of the earth. [1] [2] [3] Current designs of seismic metamaterials utilize configurations of boreholes, [4] trees [5] [6] or proposed underground resonators to act as a large ...
WebAug 12, 2015 · In this work, we numerically examine structures that could be characterized as large scale phononic metamaterials. These novel structures could have band gaps in … WebNov 4, 2015 · Here we demonstrate numerically a phononic topological metamaterial in an elastic-wave analogue of the quantum spin Hall effect. A dual-scale phononic crystal slab …
WebOct 19, 2012 · In unit cell analysis, the dynamics of a periodic material [ (e.g., atomic-scale crystalline materials, phononic (or photonic) crystals, periodic acoustic (or electromagnetic) metamaterials] is fully characterized by the application of Bloch’s theorem [ 12] on a single representative unit cell.
WebJan 13, 2013 · This comprehensive book presents all aspects of acoustic metamaterials and phononic crystals. The emphasis is on acoustic wave propagation phenomena at … increase move goal apple watchWebMar 30, 2024 · The proposed phononic metastructures facilitate all-directional wave control provided that the frequency of propagating wave lies inside the bandgap frequency range. … increase mud viscosityWebJul 12, 2024 · This gives birth to phononic crystals and later elastic metamaterials that have enabled unprecedented functionalities for a wide range of applications. Planar metamaterials are built for vibration shielding, while a myriad of works focus on integrating phononic crystals in microsystems for filtering, waveguiding, and dynamical strain energy ... increase muscle size supplementsWebApr 7, 2024 · Introduction to Photonic and Phononic Crystals and Metamaterials, by Arthur R. McGurn, presents a study of the fundamental properties of optical and acoustic … increase my confidenceWebPhononic materials are engineered media that can manipulate waves propagating through them due to their synthetic and periodic architecture. However, phononic materials are … increase my domain authorityWebJun 15, 2024 · The advancement in electromagnetic metamaterials, which commenced three decades ago, experienced a rapid transformation into acoustic and elastic systems in the forms of phononic crystals and acoustic/elastic metamaterials. Since its early discovery, numerous wave phenomena alongside the possible engineering applications have been … increase my bench press maxWebApr 1, 2024 · For a specified performance, the general methodology of metamaterial modular design includes two steps, i.e., step 1: the selection of basic components, and step 2: the iteration of performance evaluation and structural evolution, as shown in Fig. 1 c. Step 1: number of basic components (hereinafter called “structural bases”) are selected based … increase muscle size