Results 91 to 100 of about 951,322 (313)

Direct Laser Ablation of 2D Material Films for Fabricating Multi‐Functional Flexible and Transparent Devices

open access: yesAdvanced Functional Materials, EarlyView.
A scalable method for direct laser patterning of 2D films on transparent substrates like polycarbonate and glass is presented. This technique eliminates the need for photolithography and solvents, enabling the fabrication of functional devices like strain gauges, supercapacitors, and photodetector arrays.
Yigit Sozen   +3 more
wiley   +1 more source

On the hadamard products of Schlicht functions and applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
We show that each of the schlicht classes of starlike, convex, close-to-convex and strongly starlike with respect to symmetric points is invariant under the Hadamard product with the class of convex functions.
H. S. Al-Amiri
doaj   +1 more source

On the Krein-Milman-Ky Fan theorem for convex compact metrizable sets

open access: yes, 2016
The Krein-Milman theorem (1940) states that every convex compact subset of a Hausdorfflocally convex topological space, is the closed convex hull of its extreme points.
Bachir, Mohammed
core   +1 more source

Mechanisms of Anode Interfacial Phenomena and Multi‐perspective Optimization in Aqueous Alkaline Zinc‐Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
Zinc‐air batteries demonstrate great potential for sustainable energy storage but face major anode‐related challenges. This review provides a mechanism‐driven overview of zinc anode interfacial issues, e.g. dendrite formation, passivation, self‐corrosion, and hydrogen evolution; and explores advances in electrode, surface, and electrolyte engineering ...
Hong Zhao   +2 more
wiley   +1 more source

Subclasses of close-to-convex functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Let 𝒦[C,D], −1 ...
E. M. Silvia
doaj   +1 more source

Unlock the Walnut: How a Pectin‐Rich Suture Tissue and Moisture‐Driven Crack Formation Induce Shell Splitting and Facilitate Seed Germination

open access: yesAdvanced Functional Materials, EarlyView.
Walnut seeds are enclosed in a remarkably strong shell made of sclerenchyma, separated by a pectin‐rich suture tissue. Different cell shapes and chemical composition of this tissue point to an opening mechanism, which is triggered by cyclic humidity changes.
Sebastian J. Antreich   +3 more
wiley   +1 more source

Decomposition of a convex polygon into convex polygons

open access: yesDiscrete Mathematics, 1979
AbstractLet P be a convex polygon of the euclidean plane, with p vertices. P shall be decomposed into ƒ convex polygons Pj(j=1,…,ƒ). A point A of the plane is a “vertex of the decomposed polygon P”, if A is a vertex of one of the Pj. Let ei(i⩾2) be the number of i-valent vertices of the decomposed polygon P.
openaire   +3 more sources

Roofs and Convexity [PDF]

open access: yesEntropy, 2010
Convex roof extensions are widely used to create entanglement measures in quantum information theory. The aim of the article is to present some tools which could be helpful for their treatment. Sections 2 and 3 introduce into the subject. It follows descriptions of the Wootters' method, of the "subtraction procedure", and examples on how to use ...
openaire   +4 more sources

Stochastically Generated Digital Twins of 3D Solid‐State Electrolyte Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Digital Twins of random porous tape‐cast solid‐state battery architectures across µm to mm feature sizes from FIB‐SEM to X‐Ray µCT, respectively. Abstract Solid‐state lithium batteries (SSBs) have the potential to overcome conventional Li‐ion batteries in performance and safety.
Jonathan O'Neill   +3 more
wiley   +1 more source

Convexity and Sumsets

open access: yesJournal of Number Theory, 2000
Let \(A\) be an \(n\) element subset of real numbers, and let \(f\) be a strictly convex or concave function defined on an interval containing \(A\). Let \(S=\{(a,f(a)): a\in A\}\subseteq \mathbb R^2\). The authors prove that for every finite set \(T\) \[ |S+T|\geq c \min\{n|T|, n^{3/2}|T|^{1/2}\}, \] where \(c\) is an absolute constant ...
Imre Z. Ruzsa   +2 more
openaire   +3 more sources

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