Results 101 to 110 of about 1,212,069 (375)
Borophene‐Based Ultrasensitive and Broadband Photodetectors
Advanced Materials Interfaces, EarlyView.The direct growth of χ3‐phase borophene on n‐type silicon wafers leads to superior Schottky junctions, making them ideal for broad‐range, high‐sensitivity photodetectors. These photodetectors demonstrate higher sensitivity and faster response times compared to those fabricated by transferring 2D materials onto silicon to form van der Waals junctions ...
Yaser Abdi +7 more
wiley +1 more source
Periodic Solutions for Circular Restricted -Body Problems
Abstract and Applied Analysis, 2013 For circular restricted -body problems, we study the motion of a sufficiently small mass point (called the zero mass point) in the plane of equal masses located at the vertices of a regular polygon. By using variational minimizing methods, for some , we
Xiaoxiao Zhao, Wei Li, Peng Wang
doaj +1 more source
Український антарктичний журнал, 2022 The study aims to analyze the results of long-term tectonomagnetic observations on the Antarctic tectonomagnetic polygon in the region of the Akademik Vernadsky station to investigate the current geodynamics at the West Coast of the Antarctic Peninsula ...
V. Maksymchuk +6 more
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Mathematics, 2020 This paper deals with the transverse free vibration of axially functionally graded (AFG) cantilever columns under the influence of axial compressive load.
Joon Kyu Lee, Byoung Koo Lee
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The area of reduced spherical polygons [PDF]
arXiv, 2020 We confirm two conjectures of Lassak on the area of reduced spherical polygons. The area of every reduced spherical non-regular $n$-gon is less than that of the regular spherical $n$-gon of the same thickness. Moreover, the area of every reduced spherical polygon is less than that of the regular spherical odd-gons of the same thickness and whose number
arxiv
A characterization of affinely regular polygons [PDF]
Aequationes mathematicae, 2018 In 1970, Coxeter gave a short and elegant geometric proof showing that if $p_1, p_2, \ldots, p_n$ are vertices of an $n$-gon $P$ in cyclic order, then $P$ is affinely regular if, and only if there is some $ \geq 0$ such that $p_{j+2}-p_{j-1} = (p_{j+1}-p_j)$ for $j=1,2,\ldots, n$.
openaire +4 more sources
On nonexistence of an integer regular polygon [PDF]
, 1998 In this paper we consider the question whether there is a regular polygon in the Cartesian coordinate system such that all of its coordinates are integers. We are not interested in the case of square since it is trivial.
D. Klobučar
core +1 more source
3D Printing and Biocementation of Hierarchical Porous Ceramics
Advanced Materials Technologies, EarlyView.Hierarchical porous ceramics are produced at room temperature via 3D printing and bacteria‐driven biocementation. By using ureolytic bacteria to precipitate calcium carbonate between ceramic hollow spheres, the reported manufacturing process offers a sustainable alternative to traditional energy‐intensive approaches and leads to monoliths with higher ...
Alessandro Dutto +5 more
wiley +1 more source
Precision Construction of Chiral Optical Fields with Nine Controllable Degrees of Freedom
Advanced Photonics Research, EarlyView.Chiral optical fields (COFs) offer multiple controllable degrees of freedom (DOFs), enabling applications in optical tweezers, manufacturing, and encryption. However, achieving precise sidelobe control remains a challenge. This work introduces a modular multilayer annular phase plate to fine‐tune COFs by manipulating nine DOFs.
Duo Deng +4 more
wiley +1 more source
Geometric Singularities of the Stokes Problem
Abstract and Applied Analysis, 2014 When the domain is a polygon of ℝ2, the solution of a partial differential equation is written as a sum of a regular part and a linear combination of singular functions.
Nejmeddine Chorfi
doaj +1 more source