Results 101 to 110 of about 78,163 (303)

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

Advanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak, Changgyun Moon, Hyun‐Bin Yu, Sunkook Kim, Dong‐Hwan Kim   +4 more
wiley   +1 more source

Coefficient estimates and Fekete-Szegö problem for some classes of univalent functions generalized to a complex order

Demonstratio Mathematica
In this article, we determine coefficient estimates and study the Fekete-Szegö problem for classes Λn(b){\Lambda }_{n}\left(b) and Λnc(b){\Lambda }_{n}^{c}\left(b), where bb is a nonzero complex order.
Aron Mihai
doaj   +1 more source

Logarithmic derivative complex permittivity spectrometry

, 2003
A frequency domain method for the advanced dielectric spectrometry of liquids is proposed. It utilizes the feasibility of simultaneously measuring the input admittance or reflection coefficient of the specimen cells and the derivative of these cell ...
Kaatze, Udo
core   +1 more source

Machine Learning Accelerated Computational Design of Bio‐Inspired Catalysts in the Nitrogen Reduction Reaction

Advanced Materials, EarlyView.
We introduce a computational workflow that combines quantum chemical calculations and machine learning techniques to predict the catalytic performance of a wide range of catalysts in the nitrogen reduction reaction (NRR). The analysis of the trained models provides insights into the complex structure–activity relationship in experimental catalytic ...
Leonardo Di Ciano, Zihan You, Haoran Chen, Qifan Zhong, Rong‐Zhen Liao, Shaoqi Zhan   +5 more
wiley   +1 more source

On the curvature in logarithmic plots of rate coefficients for chemical reactions [PDF]

Chemistry Central Journal, 2011
In terms of the reduced potential energy barrier ζ = ΔuTS/kT, the rate coefficients for chemical reactions are usually expressed as proportional to e-ζ. The coupling between vibrational modes of the medium to the reaction coordinate leads to a proportionality of the regularized gamma function of Euler Q(a,ζ) = Γ(a,ζ)/Γ(a), with a being the number of ...
openaire   +3 more sources

Magnetic‐Field Modulation of Charge Transport in Non‐Fullerene Semiconductors for Enhanced Hydrogen Evolution

Advanced Materials Interfaces, EarlyView.
ABSTRACT This study demonstrates that weak magnetic fields (16–40 mT) increase the efficiency of the hydrogen evolution reaction (HER) in electrocatalysts based on non‐fullerene acceptor (NFA) derivatives IT‐4Cl and Y6. Electrochemical measurements reveal that the application of the magnetic field reduces the onset potential and increases the current ...
João Paulo Araujo Souza, Marlus Koehler, John Fredy Ricardo Marroquin, Jorlandio Francisco Felix, Thanh‐Tuân Bui, Paulo Eduardo Narcizo de Souza, Sebastião William da Silva, Luana Wouk   +7 more
wiley   +1 more source

Coefficient of correlation (R²), Lin’s concordance correlation coefficient (ρ_c) and RMSE of 2.5D reference predictions and correspondent depths of 3D predictions with polynomial (f₁), logarithmic (f₃) and exponential (f₄) depth function.

, 2019
Coefficient of correlation (R2), Lin’s concordance correlation coefficient (ρc) and RMSE of 2.5D reference predictions and correspondent depths of 3D predictions with polynomial (f1), logarithmic (f3) and exponential (f4) depth function.
Helge Bruelheide (137145), Stefan Trogisch (427733), Karsten Schmidt (9997), Peter Kühn (2932923), Steffen Seitz (755499), Xuezheng Shi (521990), Tobias Rentschler (7288550), Philipp Gries (7288553), Thorsten Behrens (5824967), Thomas Scholten (282408)   +9 more
core   +1 more source

A Survey of Interlayer Interaction Models for Graphene and Other 2D Materials

Advanced Materials Interfaces, EarlyView.
Van der Waals interactions arising from electronic polarization at atomically close interfaces generate corrugated interlayer energy landscapes that govern normal and tangential tractions. This review presents an overview of quantum, atomistic, analytical, and continuum modeling approaches, highlighting their roles across length scales in capturing ...
Gourav Yadav, Shakti S. Gupta, Roger A. Sauer   +2 more
wiley   +1 more source

Solid‐State Nanopore Characterization of Dendrimer‐Peptide Conjugates Across Defined Peptide Loadings

Advanced Materials Interfaces, EarlyView.
Solid‐state nanopores are used to interrogate dendrimer‐peptide conjugates with systematically varied peptide loading. Single‐particle ionic current signatures reveal how ligand density modulates deformability, transport pathways, and electromechanical coupling during translocation.
Chaoming Gu, Jin Woong Lee, Kamruzzaman Joty, Marisela Leon, Santosh Khatri, Janeesha Manawasinghe, Seungpyo Hong, Min Jun Kim   +7 more
wiley   +1 more source

A noninvasive ultrasonic method for the elasticity evaluation of the carotid arteries and its application in the diagnosis of the cerebro-vascular system

Archives of Acoustics, 2015
This study presents a comparative evaluation of the methods applied so far to describe the elasticity of the blood vessel walls. It was shown that one of the possible solutions in the description of the dependence between the vessel cross-section and the
Tadeusz POWAŁOWSKI, Bogumił PEŃSKO
doaj