Results 111 to 120 of about 166,500 (329)
Advanced Functional Materials, EarlyView.Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange +11 more
wiley +1 more source
Three‐dimensional Antimony Sulfide Based Flat Optics
Advanced Functional Materials, EarlyView.This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang +18 more
wiley +1 more source
Connecting fast-slow systems and Conley Index theory via transversality
Electronic Journal of Differential Equations, 2010 Geometric Singular Perturbation Theory (GSPT) and Conley Index Theory are two powerful techniques to analyze dynamical systems. Conley already realized that using his index is easier for singular perturbation problems.
Christian Kuehn
doaj
Using singular perturbation theory to determine kinetic parameters in a non-standard coupled enzyme assay. [PDF]
J Math Biol, 2020 Dalwadi MP +5 more
europepmc +1 more source
Singular perturbation solution of a class of singular integral equations [PDF]
, 1990 J.R. Willis, S. Nemat-Nasser
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Advanced Functional Materials, EarlyView.A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou +8 more
wiley +1 more source
Probabilistic Perturbation Bounds for Invariant, Deflating and Singular Subspaces
AxiomsIn this paper, we derive new probabilistic bounds on the sensitivity of invariant subspaces, deflation subspaces and singular subspaces of matrices. The analysis exploits a unified method for deriving asymptotic perturbation bounds of the subspaces under
Petko H. Petkov
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A Robust Impedance Controller Design for Series Elastic Actuators using the Singular Perturbation Theory. [PDF]
IEEE ASME Trans Mechatron, 2020 Kim D, Koh K, Cho GR, Zhang LQ.
europepmc +1 more source
Single Solid‐State Ion Channels as Potentiometric Nanosensors
Advanced Functional Materials, EarlyView.Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi +4 more
wiley +1 more source
On a singular perturbation problem for linear systems of ordinary differential equations. I. [PDF]
, 1978 Yoshikazu Hirasawa
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