Results 211 to 220 of about 639,379 (349)

Stellar structure via truncated M-fractional Lane-Emden solutions. [PDF]

open access: yesSci Rep
Nouh MI   +5 more
europepmc   +1 more source

Computational Astrophysics, Data Science & AI/ML in Astronomy: A Perspective from Indian Community [PDF]

open access: green
Prateek Sharma   +9 more
openalex   +1 more source

Determining Exciton Diffusion Length in Organic Semiconductors: Unifying Macro‐ and Microscopic Perspectives

open access: yesAdvanced Energy Materials, EarlyView.
Exciton diffusion length in organic semiconductor films is determined from encounter/annihilation rates. Non‐normalized exciton densities and proper intrinsic lifetime reference avoid over‐parametrization of the fits. Monte Carlo Simulation of individual molecule‐to‐molecule hops reproduce these results (②) when matching lattice constant and hoping ...
Wenchao Yang   +12 more
wiley   +1 more source

Elucidating the Role of Electric Fields in Fe Oxidation via an Environmental Atom Probe

open access: yesAngewandte Chemie, EarlyView.
Field‐Assisted Fe Oxidation imaged by Environmental Atom Probe. The oxidation of iron (Fe) at the tip of a sharp needle under high electrostatic fields has been visualized using an Environmental Atom Probe (EAP) and corroborated through Density Functional Theory (DFT) calculations and a mean‐field model applied to a multi‐faceted catalytic grain ...
Sten V. Lambeets   +10 more
wiley   +2 more sources

Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang   +6 more
wiley   +1 more source

CurFi: An automated tool to find the best regression analysis model using curve fitting

open access: yesEngineering Reports, Volume 4, Issue 12, December 2022., 2022
An automated curve fitting system named “CurFi” is developed that uses linear regression models to fit a curve to a dataset and to find out the best fit model. The system facilitates to upload a dataset, split the dataset into training set and test set, select relevant features and label from the dataset; and the system will return the best fit linear ...
Ayon Roy   +4 more
wiley   +1 more source

Multiwavelength constraints on the origin of a nearby repeating fast radio burst source in a globular cluster. [PDF]

open access: yesNat Astron
Pearlman AB   +28 more
europepmc   +1 more source

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