Results 71 to 80 of about 1,299,133 (276)
Resonance in Bottles with Different Shapes
International Scholastic Journal of Science, 2012 The Helmholtz Resonance equation derived in the 1800’s describes the nature of resonance in narrow-necked vessels, known as Helmholtz Resonators.
Amy Elliott
doaj
Advanced Functional Materials, EarlyView.A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen +10 more
wiley +1 more source
Solving eigenvalues problems for Helmholtz equation by point-source method
Advanced Engineering Research, 2016 A method of problem solution of the eigenvalues and eigenfunctions for the Helmholtz equation in the domains with arbitrary configuration is worked out.
Elena E. Shcherbakova
doaj +1 more source
Bio‐Inspired Artificial Ionic Mechanoreceptor
Advanced Functional Materials, EarlyView.A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari +4 more
wiley +1 more source
Hypercomplex Factorization of the Helmholtz Equation
Zeitschrift für Analysis und ihre Anwendungen, 1986 The main result of this paper is the construction of a global hypercomplex factorization of the Dirichiet problem for the Helmholtz equation. This result permits the reduction of the considered boundary value problem into two boundary value problems of first order for generalized analytic functions.
openaire +2 more sources
An inverse problem for Helmholtz′s equation [PDF]
International Journal of Mathematics and Mathematical Sciences, 1987 The refraction coefficient in Helmholtz′s equation is found from the knowledge of a family of the solutions to this equation on two lines.
openaire +3 more sources
Advanced Functional Materials, EarlyView.Sustainable Na‐(Fe,Zn)Cl2 battery modules deliver discharge energies comparable to state‐of‐the‐art Na‐(Ni,Fe)Cl2 batteries through high active‐material utilization, although with lower power capability. Advanced electrochemical characterization reveals a distinct reaction mechanism and low resistance during Fe dechlorination.
Enea Svaluto‐Ferro +10 more
wiley +1 more source
On the Relationship between the Inhomogeneous Wave and Helmholtz Equations in a Fractional Setting
Abstract and Applied Analysis, 2019 We study convergence of solutions of a space and time inhomogeneous fractional wave equation on the quarter-plane to the stationary regime described by solutions of the Helmholtz equation.
Mateo Dulce, Alexander Getmanenko
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Self‐Assembled Hybrid Cell‐Enzyme Materials for Gas‐Powered Biocatalysis
Advanced Functional Materials, EarlyView.Integrating living cells with programmable enzyme networks enables hybrid materials that convert gaseous feedstocks into chemical reducing power. These gas‐powered catalytic beads operate as modular, recyclable platforms for adaptive biocatalysis and sustainable synthesis.
Marius Stoeckle +2 more
wiley +1 more source
Photo‐Degradable Polyester Networks and Multi‐Photon Printed Objects Based on Cyclic Ketene Acetals
Advanced Functional Materials, EarlyView.The current work introduces a photoreversible polyester network derived from radical ring‐opening polymerization of cyclic ketene acetals. It combines photoreversible cross‐linking with initiator‐free multi‐photon printing. Reversible network formation, tunable mechanical properties, and selective degradation highlight its potential as a versatile ...
Till Meissner +5 more
wiley +1 more source