Results 131 to 140 of about 99,259 (331)
Advanced Functional Materials, EarlyView.CsPbI₃ perovskite solar cells face stability issues due to high annealing temperatures and moisture. Butylammonium acetate (BAAc) enables stable phase formation at 160°C in ambient laboratory conditions, enhancing efficiency and stability, achieving 18.6% PCE, and maintaining over 81% efficiency after 1,000 hours of maximum power point tracking under 1
Narendra Pai +10 more
wiley +1 more source
Hyperspectral Image Classification Based on Fractional Fourier Transform
Remote SensingTo effectively utilize the rich spectral information of hyperspectral remote sensing images (HRSIs), the fractional Fourier transform (FRFT) feature of HRSIs is proposed to reflect the time-domain and frequency-domain characteristics of a spectral pixel ...
Jing Liu, Lina Lian, Yuanyuan Li, Yi Liu
doaj +1 more source
Advanced Functional Materials, EarlyView.Particular thermal metamaterials are widely used as daytime radiative coolers merely by embedding thermally emissive nanoparticles (NPs) in liquid resins to form scalable, yet highly efficient cooling films in a cost‐effective way. However, randomly dispersed NPs, prevalently used thus far, cause strong scattering, limiting NP content and cooling ...
YongDeok Cho +10 more
wiley +1 more source
Modified Local Whittle Estimation of the Memory Parameter in the Nonstationary Case [PDF]
Semiparametric estimation of the memory parameter is studied in models of fractional integration in the nonstationary case, and some new representation theory for the discrete Fourier transform of a fractional process is used to assist in the analysis. A
Katsumi Shimotsu, Peter C.B. Phillips
core
Fractional integrals and Fourier transforms
, 2017 This paper gives a short survey of some basic results related to estimates of fractional integrals and Fourier transforms. It is closely adjoint to our previous survey papers \cite{K1998} and \cite{K2007}. The main methods used in the paper are based on nonincreasing rearrangements. We give alternative proofs of some results.
openaire +2 more sources
Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)
Advanced Functional Materials, EarlyView.Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao +5 more
wiley +1 more source
COVID-19 diagnosis by extracting new features from lung CT images using Fractional Fourier Transform
, 2023 Nokhostin A, Rashidi S.
europepmc +2 more sources
2D Phosphorene‐Decorated Ni‐Rich Layered Cathodes for High‐Power and High‐Energy Li‐Ion Batteries
Advanced Functional Materials, EarlyView.A conformal coating of 2D phosphorene nanosheets is decorated on Li[Ni0.8Co0.1Mn0.1]O2 cathodes to enhance fast charge–discharge performance and structural stability under high mass loading and low carbon content. As a result, it exhibits improved power capability, cycle stability, and suppressed structural degradation, offering a promising strategy ...
Jihoe Lee +15 more
wiley +1 more source
Color image encryption based on chaotic compressed sensing and two-dimensional fractional Fourier transform. [PDF]
Sci Rep, 2020 Wang X, Su Y.
europepmc +1 more source
Supramolecular Liquid Crystal Elastomer Adhesives: Role of Internal Damping and Hydrogen Bonding
Advanced Functional Materials, EarlyView.The adhesion strength can be significantly enhanced through the molecular design of supramolecular liquid crystal elastomers (LCEs) that combine high internal damping from mesogen reorientation with abundant hydrogen‐bonding moieties. Solvent vapor annealing enables reversible, non‐thermal control of adhesion, offering potential for heat‐sensitive ...
Subi Choi, Suk‐kyun Ahn
wiley +1 more source