Results 61 to 70 of about 101,890 (261)
In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts
Advanced Materials, EarlyView.An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea +9 more
wiley +1 more source
A Sensitive Frequency Range Method Based on Laser Ultrasounds for Micro-Crack Depth Determination
Sensors, 2022 The laser ultrasonic method using the characteristics of transmitted Rayleigh waves in the frequency domain to determine micro-crack depth is proposed.
Haiyang Li +4 more
doaj +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
Finite element simulations of surface effect on Rayleigh waves
AIP Advances, 2018 Rayleigh waves influenced by surface effect are investigated by using finite element methods, in which eigenfrequency analysis are performed on a model composed of a half-space covered by the surface effect dominated domain.
Jin He, Jinling Zhao
doaj +1 more source
Extreme waves statistics for Ablowitz-Ladik system
, 2013 We examine statistics of waves for the problem of modulation instability development in the framework of discrete integrable Ablowitz-Ladik (AL) system.
Agafontsev, Dmitry
core +1 more source
Crack Repair in Hydroxyapatite Bioceramics Using an Ultraviolet Ultrafast Laser
Advanced Materials Interfaces, EarlyView.The study proposes an ultrafast ultraviolet laser approach to repair hidden tooth cracks, which has been preliminarily validated on HAP. Moreover, this technique aims to strengthen the native enamel structure rather than introducing a foreign filling material.
Yan Xue +6 more
wiley +1 more source
BuildingsCarbonation depth is essential to determine the durability and predict the remaining service life of concrete structures. This study proposes a multi-frequency Rayleigh wave approximation method (MFRWA) to evaluate carbonation depth by exploiting the ...
Xiangtao Sun +5 more
doaj +1 more source
Archives of Acoustics, 2018 Bone loss is one of the serious health issues in bedridden patients or young generation due to lack of physical activities. Mechanical forces are exerted on the bones through ground reaction forces, liquid loadings and by other contraction activities of ...
Vikas SHARMA, Satish KUMAR
doaj +1 more source
Quasi Two-dimensional Transfer of Elastic Waves
, 2001 A theory for multiple scattering of elastic waves is presented in a random medium bounded by two ideal free surfaces, whose horizontal size is infinite and whose transverse size is smaller than the mean free path of the waves.
A. Fick +32 more
core +2 more sources
Resonance Expansions and Rayleigh Waves [PDF]
Mathematical Research Letters, 2001 The author studies expansions of solutions of the wave equation in a compact set with initial data supported in the same set. He considers the general framework of the ``black box scattering'' introduced by Sjöstrand and Zworski. In particular, this includes the classical case of scattering by obstacle with Dirichlet or Neumann boundary conditions and ...
openaire +1 more source