Results 111 to 120 of about 84,906 (335)
The middle hedgehog of a planar convex body [PDF]
arXiv, 2016 A convexity point of a convex body is a point with the property that the union of the body and its reflection in the point is convex. It is proved that in the plane a typical convex body (in the sense of Baire category) has infinitely many convexity points.
arxiv
Chiral Sensing of Amino Acids under Visible Light via Hydroxypropyl Cellulose Gels
Advanced Optical Materials, EarlyView.Hydroxypropyl cellulose gels enable visible‐light‐based chiral detection of amino acid enantiomers. This study showcases their structural color properties for distinguishing phenylalanine and alanine enantiomers. The gels exhibit pH‐responsive color changes, high sensitivity at low concentrations (0.2 wt.%), and long‐term stability, offering ...
Luyao Huang +6 more
wiley +1 more source
On the representation of finite convex geometries with convex sets [PDF]
arXiv, 2017 Very recently Richter and Rogers proved that any convex geometry can be represented by a family of convex polygons in the plane. We shall generalize their construction and obtain a wide variety of convex shapes for representing convex geometries. We present an Erdos-Szekeres type obstruction, which answers a question of Czedli negatively, that is ...
arxiv
Advanced Optical Materials, EarlyView.Lowering the barrier for researchers to explore polariton physics: A fully solution‐processed dielectric polariton microcavity incorporating Rhodamine 6G with tunable Rabi splitting up to 400 meV and photoluminescence. Abstract Planar microcavity polaritons have recently emerged as a promising technology for improving several performance ...
Hassan A. Qureshi +7 more
wiley +1 more source
Decomposition of a convex polygon into convex polygons
Discrete 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 +2 more sources
Locking in Color: Stable RGB Perovskite Nanocrystal Films via UV Cross‐Linking
Advanced Optical Materials, EarlyView.Combining block copolymer stabilized lead halide nanocrystals with a UV light‐based cross‐linking procedure yields ultra‐stable nanocrystal thin films, which are resistant to dissolution by organic solvents and impervious to interlayer ion exchange. This allows for the fabrication of stacked layer RGB all‐perovskite white light‐emitting phosphors with ...
Patrick Ganswindt +8 more
wiley +1 more source
Basic Concepts, Identities and Inequalities - the Toolkit of Information Theory
Entropy, 2001 : Basic concepts and results of that part of Information Theory which is often referred to as "Shannon Theory" are discussed with focus mainly on the discrete case. The paper is expository with some new proofs and extensions of results and concepts.
F. Topsøe
doaj +1 more source