Results 41 to 50 of about 18,532 (261)

M-Polynomials and Topological Indices of Dominating David Derived Networks

Open Chemistry, 2018
There is a strong relationship between the chemical characteristics of chemical compounds and their molecular structures. Topological indices are numerical values associated with the chemical molecular graphs that help to understand the physical features,
Kang Shin Min, Nazeer Waqas, Gao Wei, Afzal Deeba, Gillani Syeda Nausheen   +4 more
doaj   +1 more source

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Topological indices for nanoclusters [PDF]

Computational Materials Science, 2015
Abstract Nanoclusters create the possibility of designing novel properties and devices based on finite structures, with small dimensions. Clusters are of interest for catalytic, optical, biochemical, and structural characteristics. We examine clusters of icosahedral, cuboctahedral, and decahedral symmetry.
Kaatz, Forrest, Bultheel, Adhemar
openaire   +1 more source

M-Polynomials and Degree-Based Topological Indices of the Crystallographic Structure of Molecules

Biomolecules, 2018
Topological indices are numerical parameters used to study the physical and chemical properties of compounds. In quantitative structure–activity relationship QSARs, topological indices correlate the biological activity of compounds with their ...
Wei Gao, Muhammad Younas, Adeel Farooq, Abid Mahboob, Waqas Nazeer   +4 more
doaj   +1 more source

Extremal topological indices of some nanostructures

Heliyon, 2023
In this work, general formulas of degree-based and neighborhood degree sum-based topological indices for a 2D lattice of H-Naphtalenic nanotubes and pent-heptagonal nanosheets are determined.
Shivani Rai, Biswajit Deb, Zahid Raza, Sourav Mondal   +3 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Statistical-Mechanical Theory of Topological Indices

SSRN Electronic Journal, 2022
Peer ...
openaire   +2 more sources

A New Approach for Generalized Fractal Dimensions Based on Topological Indices for Pyracyclene and Pentahexoctite Networks

IEEE Access
Self-similar molecular structures have been recently become popular due to topological indices, which are numerical parameters for network graphs. Topological indices are essential in chemical network analysis to describe the essential connectivity of ...
K. Yogalakshmi, D. Easwaramoorthy
doaj   +1 more source

Multiplicative Valency-Based Descriptors for Silicon Carbides Si2C3 − I[p, q], Si2C3 − II[p, q], Si2C3 − III[p, q], and SiC3 − III[p, q] in Drug Applications

Journal of Chemistry, 2020
Topological indices help us to collect information about algebraic graphs and give us a mathematical approach to understand the properties of algebraic structures.
Jin Xu, Nasir Javaid, Shamas Bilal, Muhammad Rafaqat, Iskander Tlili   +4 more
doaj   +1 more source