Results 61 to 70 of about 25,954 (258)
Signed total Roman $k$-domination in directed graphs
Communications in Combinatorics and Optimization, 2016 Let $D$ be a finite and simple digraph with vertex set $V(D)$. A signed total Roman $k$-dominating function (STR$k$DF) on $D$ is a function $f:V(D)\rightarrow\{-1, 1, 2\}$ satisfying the conditions that (i) $\sum_{x\in N^{-}(v)}f(x)\ge k ...
N. Dehgard, L. Volkmann
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Retrospective Review on Reticular Materials: Facts and Figures Over the Last 30 Years
Advanced Materials, EarlyView.To shape the future course of research in reticular materials, this work reflects on the progress over the past 30 years, complemented by input from the community of 228 active researchers through a global, crowdsourced survey: ranging from demographics, how it works, publish and interact, to highlights on both academic and industrial milestones, as ...
Aamod V. Desai +8 more
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Advanced Materials, EarlyView.A biphasic Ni‐MXene quantum‐confined nanostructure (Ni‐MJQD) serves as a Janus platform, simultaneously achieving high‐performance energy storage and efficient catalytic oxidation. The unique architecture enables superior energy storage performance and selective benzyl alcohol oxidation‐symbolizing “one stone, two birds” for sustainable energy and ...
Lagnamayee Mohapatra +5 more
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Giant Berry‐phase‐Driven X‐Ray Beam Translations in Strain‐Engineered Semiconductor Crystals
Advanced Materials, EarlyView.Due to the Berry‐phase effect, X‐rays propagating in deformed crystals undergo large translations, interesting for X‐ray optics applications. Here, the lattice expansion observed upon H irradiation of dilute‐nitride semiconductors is exploited to engineer the deformation landscape of selectively hydrogenated GaAsN epilayers.
Marco Felici +9 more
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Advanced Optical Materials, EarlyView.Here, recent progress is highlighted in colloidal magnetoplasmonic hybrid nanomaterials, with a focus on chiral plasmonics. Metal nanocrystals with intrinsic chiroptical features can lead to a combination of chiral plasmonics and magneto‐optics effects when interacting with the magnetic counterpart, offering a foundation for systematically designing ...
Miguel Comesaña‐Hermo +4 more
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Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity
Advanced Science, EarlyView.Kinetically arrested, chemically disordered perovskite thin films exhibit exquisite crystalline fidelity, broad IR–UV transparency, and low resistivity, despite incorporating five mismatched 3d–5d cations, including Cr and W. This study unites electronic correlation, cation diversity, valence complexity, and disorder—enabling new transparent conductors
Saeed S. I. Almishal +18 more
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A Modern Roman‐Inspired Concrete with Daytime Radiative Cooling Capacity
Advanced Science, EarlyView.Coolcrete, inspired by ancient Roman concrete, is a new cementitious material with photonic properties enabling passive daytime radiative cooling. Made from quicklime and zeolites, it reduces cooling energy demand, lowers CO2 emissions, and may eliminate urban heat islands.
Jorge S. Dolado +11 more
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Transition‐Metal‐Free Zeolite Composites for Tandem Catalytic Conversion of Methane to Light Olefins
Advanced Science, EarlyView.Light olefins can be produced from methane using a cascade catalytic system that combines transition‐metal‐free (FER zeolite with an acidic zeolite, such as SAPO‐34, under relatively mild conditions. In this tandem process, methane is first oxidized to methanol over the FER zeolite and then converted to olefins via the MTO reaction on the acidic ...
Peipei Xiao +5 more
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Advanced Electronic Materials, EarlyView.The device platform, which utilizes a photo‐crosslinked ionic gel electrolyte with a broad range of oxidation and reduction capabilities, can effectively evaluate and screen the thermoelectric material candidates with high potential across a wide range of doping levels, thereby minimizing the effort required to identify dopants compatible with ...
Sunbin Hwang +2 more
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Total Roman Reinforcement in Graphs
Discussiones Mathematicae Graph Theory, 2019 A total Roman dominating function on a graph G is a labeling f : V (G) → {0, 1, 2} such that every vertex with label 0 has a neighbor with label 2 and the subgraph of G induced by the set of all vertices of positive weight has no isolated vertex.
Ahangar H. Abdollahzadeh +4 more
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