Results 81 to 90 of about 991,692 (161)
Study on Blast Mitigation Protection of Underground Station Structures Using Phononic Crystals
BuildingsUrban subways, as critical strategic spaces, require underground structures with sufficient blast-resistant capabilities. To evaluate the blast resistance performance of underground station structures under ground-level nuclear explosion air shock waves,
Jihu Wu +5 more
doaj +1 more source
Plane Wave-Perturbative Method for Evaluating the Effective Speed of Sound in 1D Phononic Crystals
Advances in Materials Science and Engineering, 2016 A method for calculating the effective sound velocities for a 1D phononic crystal is presented; it is valid when the lattice constant is much smaller than the acoustic wave length; therefore, the periodic medium could be regarded as a homogeneous one ...
J. Flores Méndez +5 more
doaj +1 more source
, 2020 A nanoscale phononic crystal filter (reflector) is designed for a kinetic inductance detector where the reflection band is matched to the quasiparticle recombination phonons with the aim to increase quasiparticle lifetime in the superconducting resonator.
Rostem, K. +3 more
core +1 more source
Replication Data for: Optically Defined Phononic Crystal Defect
All figure data and scripts to generate them, plus a COMSOL source file for trapping a phononic crystal with a Gaussian ...
Childress, Jack
core +1 more source
, 2010 Phononic slabs of an fcc phononic crystal consisting of close-packed (glued) rubber spheres in air, under the influence of mild dissipation in rubber, exhibit large absolute transmission gaps. Proper size variation of the spheres in a sequence of crystal
Psarobas, I. E.
core +1 more source
Integrated phononic crystal resonators based on adiabatically-terminated phononic crystal waveguides
AIP Advances, 2016 In this letter, we demonstrate a new design for integrated phononic crystal (PnC) resonators based on confining acoustic waves in a heterogeneous waveguide-based PnC structure.
Razi Dehghannasiri +3 more
doaj +1 more source
Phononic crystal slabs: fundamentals and applications
, 2012 International audienceWe present in this paper theoretical and experimental studies of guided acoustic wave propagating in phononic crystal slabs.
Khelif, Abdelkrim
core +2 more sources
Measurements of Lamb-Wave Band Gaps and Waveguiding in 2-D Si-Based Phononic-Crystal Plates
, 2007 聲子晶體是由數種彈性材料週期性排列而成，當聲波在聲子晶體結構中傳遞時，由於波傳之頻散曲線不連續，造成該不連續的頻段內，聲波無法傳遞，此現象稱之為聲波頻溝(acoustic band gap)。若在此頻段內聲波不論沿任何方向均無法傳遞，則稱之為全頻溝(complete band gap)。在頻溝範圍內，若將無窮週期的聲子晶體結構移除一或數排，形成之線缺陷可做為聲子晶體波導(phononic-crystal waveguide)，則原本在頻溝內無法形成模態的頻率，將會在此缺陷結構中形成可傳遞的缺陷模態 ...
Kuo, Wei-Chih, 郭維志
core
Complete phononic bandgaps and bandgap maps in two-dimensional silicon phononic crystal plates
, 2007 International audienceUsing a plane wave expansion (PWE) method, the band structure of a silicon (Si) phononic crystal slab with periodically etched vertical holes is obtained.
Khelif, Abdelkrim +6 more
core +1 more source
Acoustic channel drop tunneling in a phononic crystal
, 2005 International audienceWe study both theoretically and experimentally the possibility of resonant tunneling of acoustic waves between two parallel guides created in a phononic crystal composed of steel cylinders in water.
V. Laude +15 more
core +1 more source