Results 61 to 70 of about 1,325 (293)

Precise Asymptotic Approximations for Kernels Corresponding to Lévy Processes [PDF]

open access: yesPotential Analysis, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jo, Sihun, Yang, Minsuk
openaire   +2 more sources

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

open access: yesAdvanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang   +14 more
wiley   +1 more source

Nonstationary Equations for the Reaction Layer with the Degenerate Equilibrium Points

open access: yesМоделирование и анализ информационных систем, 2017
We consider a nonstationary process of spreading  some substance in a one-dimensional spatially  inhomogeneous  system  of cells.  It  is assumed  that a change  in the  concentration of \(u_n (t)\) in a cell with  the  number  \(n\) with  time \(t\) is ...
Aleksei A. Bykov, Kristina E. Ermakova
doaj   +1 more source

On a conjecture of Gowers and Wolf

open access: yesDiscrete Analysis, 2022
On a conjecture of Gowers and Wolf, Discrete Analysis 2022:10, 13 pp. Szemerédi's theorem asserts that for every $\delta>0$ and every positive integer $k$ there exists $n$ such that every subset $A$ of $\{1,2,\dots,n\}$ of size at least $\delta n ...
Daniel Altman
doaj   +1 more source

A note to the convergence rates in precise asymptotics [PDF]

open access: yesJournal of Inequalities and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Tailoring Phonon‐Driven Responses in α‐MoO3 through Isotopic Enrichment

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The implementation of polaritonic materials into nanoscale devices requires selective tuning of parameters to realize desired spectral or thermal responses. One robust material, α‐MoO3, an orthorhombic crystal boasting three distinct phonon dispersions, provides three polaritonic dispersions of hyperbolic phonon polaritons (HPhPs) across the ...
Thiago S. Arnaud   +31 more
wiley   +1 more source

Time‐Resolved Simultaneous Mapping of Thickness and Nanoparticle Concentration in Nanofluid Thin Films via Imaging Ellipsometry and Deep‐UV Reflectance Imaging

open access: yesAdvanced Materials Interfaces, EarlyView.
This study establishes a dual‐channel optical metrology framework integrating phase‐shifting imaging ellipsometry and deep‐UV reflectance imaging. This label‐free approach enables simultaneous, time‐resolved mapping of film thickness and nanoparticle (NP) concentration in dynamic nanofluid thin films.
Eita Shoji   +3 more
wiley   +1 more source

A result on precise asymptotics for largest eigenvalues of β ensembles [PDF]

open access: yesJournal of Inequalities and Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xie, Junshan, Zhao, Jing
openaire   +1 more source

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

open access: yesAdvanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel   +4 more
wiley   +1 more source

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