Buscar
Mostrando ítems 1-10 de 60
Resonance switching in a large sonic crystal cavity
(Elsevier, 2017-01)
In this work we present an experimental realization of resonance switching inside a large, relative to the lattice constant, sonic crystal (SC) cavity. The resonances arise from a temporary trapping of the acoustical energy ...
Broadband resonant cavity inside a two-dimensional sonic crystal
(Elsevier, 2015-10)
A rectangular cavity inside a two-dimensional sonic crystal was theoretically and experimentally characterized by examining its response to a cylindrical source emitting narrow-band filtered noise bursts with central ...
Time reversal focusing in the audible range using a tunable sonic crystal
(Journal of Animal Ecology, 2021-06)
Time reversal (TR) focusing of acoustical waves is a widely studied phenomenon that usually requires a chaotic cavity or disordered scattering medium to achieve spatial and frequency decorrelation of the acoustic field ...
An auditory illusion of proximity of the source induced by sonic crystals
(Public Library of Science, 2015-07)
In this work we report an illusion of proximity of a sound source created by a sonic crystal placed between the source and a listener. This effect seems, at first, paradoxical to naïve listeners since the sonic crystal is ...
Proton field-cycling nucler magnetic resonance relaxometry in the smectic A mesophase of thermotropic cyanobiphenyls: Effects of sonication
(American Institute of Physics, 2004-07)
Field-cycling nuclear magnetic resonance (NMR) relaxometry was used to study the spin-lattice relaxation dispersion of selected standard smectic A liquid crystals at different temperatures. Relaxation features at both, in ...
Effect of high intensity ultrasound on crystallization behavior and physical properties of high stearic high oleic sunflower oil soft stearin
(Springer, 2015-04)
The objective of this research was to evaluatethe effect of high-intensity ultrasound (HIU) and crystallizationtemperature (Tc) on the crystallization behavior,melting profile, and elasticity of a soft stearin fraction ...
Phase behavior of synthetic amphiphile vesicles investigated by calorimetry and fluorescence methods
(1999-03-22)
The understanding of biological membranes may be improved by investigating physical properties of vesicles from natural or synthetic amphiphiles. The application of vesicles as mimetic agents depends on the knowledgment ...
Phase behavior of synthetic amphiphile vesicles investigated by calorimetry and fluorescence methods
(1999-03-22)
The understanding of biological membranes may be improved by investigating physical properties of vesicles from natural or synthetic amphiphiles. The application of vesicles as mimetic agents depends on the knowledgment ...
Tailoring physical properties of monoglycerides oleogels using high-intensity ultrasound
(Elsevier Science, 2020-08)
The effects of high-intensity ultrasound application (HIU-20 kHz, 96 W, 3 pulses: 10 s on/5s off) and cooling rate (0.1 and 10 °C/min) on physical properties of monoglycerides (MG) oleogels (3, 4.5, and 6 wt%) were evaluated. ...
Aplicaciones de cristales sónicos a cavidades resonantes y localización de fuentes sonoras
(Universidad Nacional de Quilmes, 2014-03-25)
La hipótesis que se plantea en esta tesis es que la introducción de metamateriales acústicos puede, a través de sus propiedades de transmisión y reflexión, modificar el campo sonoro de forma controlada y predecible y afectar ...