Results 71 to 80 of about 3,088,219 (346)
Applied SciencesPowders that absorb sound by longitudinal vibration have either a gentle or sharp sound absorption curve at the first absorption peak frequency. Experiments were performed to investigate the conditions under which longitudinal vibration occurs in powders
Shuichi Sakamoto +4 more
doaj +1 more source
Quantitative Photoacoustic Imaging in the Acoustic Regime using SPIM
, 2017 While in standard photoacoustic imaging the propagation of sound waves is modeled by the standard wave equation, our approach is based on a generalized wave equation with variable sound speed and material density, respectively.
Beigl, Alexander +3 more
core +1 more source
Sound attenuation in the superconducting amorphous alloy ZrTiCuNiBe [PDF]
, 1999 The superconducting energy gap and the parameter of the intensity of electron scattering at two-level systems in amorphous ZrTiCuNiBe are determined from the results of measurements of sound attenuation.
A. L. Gaiduk +8 more
core +2 more sources
Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
wiley +1 more source
Novel sound absorption materials produced from air laid non-woven feather fibres
Heliyon, 2018 This research has investigated the use of feather fibres to produce sound absorption materials as an alternative to the oil derived synthetic plastics that currently dominate the sound absorption materials market.
Elena Dieckmann +3 more
doaj +1 more source
Tone-burst technique measures high-intensity sound absorption [PDF]
, 1971 Tone-burst technique, in which narrow-bandwidth, short-duration sonic pulse is propagated down a standing-wave tube, measures sound absorbing capacity of materials used in jet engine noise abatement. Technique eliminates effects of tube losses and yields
Powell, J. G., Van Houten, J. J.
core +1 more source
Advanced Materials, EarlyView.A flexible and lightweight acoustic metamaterial composed of air cavities encased in polydimethylsiloxane (PDMS) is introduced to enhance ultrasound power transfer. The metamaterial leverages the strong reflectivity of air cavity boundaries to concentrate incoming ultrasound, thereby improving the performance of piezoelectric energy harvesters ...
Hyung‐Suk Kwon +4 more
wiley +1 more source
Characteristics of developed flexible polyurethane foams reinforced with coconut coir fibres and recycled tyres [PDF]
, 2012 Flexible Polyurethane (PU) foam is generally used in seat cushions of automotive seating for comfort and supporting the occupants. However, due to the demand for more comfortable compartment; seat cushions are now designed for better riding comfort
Chan, Wen Shan
core
Oblique incidence sound absorption of parallel arrangement of multiple micro-perforated panel absorbers in a periodic pattern [PDF]
, 2014 The sound absorption performance of a micro-perforated panel (MPP) absorber array at oblique incidence and in diffuse field is investigated both numerically and experimentally. The basic module of the MPP absorber array consists of four parallel-arranged
Huang, L, Wang, C, Zhang, Y
core +1 more source
Advanced Materials, EarlyView.Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief +12 more
wiley +1 more source